diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/core.c | 2 | ||||
| -rw-r--r-- | src/rlgl.c | 4231 | ||||
| -rw-r--r-- | src/rlgl.h | 4272 | ||||
| -rw-r--r-- | src/shader_distortion.h | 106 |
4 files changed, 4270 insertions, 4341 deletions
@@ -95,7 +95,9 @@ #define RAYMATH_IMPLEMENTATION // Define external out-of-line implementation of raymath here #include "raymath.h" // Required for: Vector3 and Matrix functions +#define RLGL_IMPLEMENTATION #include "rlgl.h" // raylib OpenGL abstraction layer to OpenGL 1.1, 3.3+ or ES2 + #include "utils.h" // Required for: fopen() Android mapping #if defined(SUPPORT_GESTURES_SYSTEM) diff --git a/src/rlgl.c b/src/rlgl.c deleted file mode 100644 index c806d35d..00000000 --- a/src/rlgl.c +++ /dev/null @@ -1,4231 +0,0 @@ -/********************************************************************************************** -* -* rlgl - raylib OpenGL abstraction layer -* -* rlgl is a wrapper for multiple OpenGL versions (1.1, 2.1, 3.3 Core, ES 2.0) to -* pseudo-OpenGL 1.1 style functions (rlVertex, rlTranslate, rlRotate...). -* -* When chosing an OpenGL version greater than OpenGL 1.1, rlgl stores vertex data on internal -* VBO buffers (and VAOs if available). It requires calling 3 functions: -* rlglInit() - Initialize internal buffers and auxiliar resources -* rlglDraw() - Process internal buffers and send required draw calls -* rlglClose() - De-initialize internal buffers data and other auxiliar resources -* -* CONFIGURATION: -* -* #define GRAPHICS_API_OPENGL_11 -* #define GRAPHICS_API_OPENGL_21 -* #define GRAPHICS_API_OPENGL_33 -* #define GRAPHICS_API_OPENGL_ES2 -* Use selected OpenGL backend -* -* #define RLGL_STANDALONE -* Use rlgl as standalone library (no raylib dependency) -* -* #define SUPPORT_VR_SIMULATOR -* Support VR simulation functionality (stereo rendering) -* -* #define SUPPORT_DISTORTION_SHADER -* Include stereo rendering distortion shader (shader_distortion.h) -* -* DEPENDENCIES: -* raymath - 3D math functionality (Vector3, Matrix, Quaternion) -* GLAD - OpenGL extensions loading (OpenGL 3.3 Core only) -* -* -* LICENSE: zlib/libpng -* -* Copyright (c) 2014-2018 Ramon Santamaria (@raysan5) -* -* This software is provided "as-is", without any express or implied warranty. In no event -* will the authors be held liable for any damages arising from the use of this software. -* -* Permission is granted to anyone to use this software for any purpose, including commercial -* applications, and to alter it and redistribute it freely, subject to the following restrictions: -* -* 1. The origin of this software must not be misrepresented; you must not claim that you -* wrote the original software. If you use this software in a product, an acknowledgment -* in the product documentation would be appreciated but is not required. -* -* 2. Altered source versions must be plainly marked as such, and must not be misrepresented -* as being the original software. -* -* 3. This notice may not be removed or altered from any source distribution. -* -**********************************************************************************************/ - -#include "config.h" - -#include "rlgl.h" - -#include <stdio.h> // Required for: fopen(), fclose(), fread()... [Used only on LoadText()] -#include <stdlib.h> // Required for: malloc(), free(), rand() -#include <string.h> // Required for: strcmp(), strlen(), strtok() [Used only in extensions loading] -#include <math.h> // Required for: atan2() - -#if !defined(RLGL_STANDALONE) - #include "raymath.h" // Required for: Vector3 and Matrix functions -#endif - -#if defined(GRAPHICS_API_OPENGL_11) - #if defined(__APPLE__) - #include <OpenGL/gl.h> // OpenGL 1.1 library for OSX - #include <OpenGL/glext.h> - #else - // APIENTRY for OpenGL function pointer declarations is required - #ifndef APIENTRY - #ifdef _WIN32 - #define APIENTRY __stdcall - #else - #define APIENTRY - #endif - #endif - // WINGDIAPI definition. Some Windows OpenGL headers need it - #if !defined(WINGDIAPI) && defined(_WIN32) - #define WINGDIAPI __declspec(dllimport) - #endif - - #include <GL/gl.h> // OpenGL 1.1 library - #endif -#endif - -#if defined(GRAPHICS_API_OPENGL_21) - #define GRAPHICS_API_OPENGL_33 // OpenGL 2.1 uses mostly OpenGL 3.3 Core functionality -#endif - -#if defined(GRAPHICS_API_OPENGL_33) - #if defined(__APPLE__) - #include <OpenGL/gl3.h> // OpenGL 3 library for OSX - #include <OpenGL/gl3ext.h> // OpenGL 3 extensions library for OSX - #else - #define GLAD_IMPLEMENTATION - #if defined(RLGL_STANDALONE) - #include "glad.h" // GLAD extensions loading library, includes OpenGL headers - #else - #include "external/glad.h" // GLAD extensions loading library, includes OpenGL headers - #endif - #endif -#endif - -#if defined(GRAPHICS_API_OPENGL_ES2) - #include <EGL/egl.h> // EGL library - #include <GLES2/gl2.h> // OpenGL ES 2.0 library - #include <GLES2/gl2ext.h> // OpenGL ES 2.0 extensions library -#endif - -#if defined(RLGL_STANDALONE) - #include <stdarg.h> // Required for: va_list, va_start(), vfprintf(), va_end() [Used only on TraceLog()] -#endif - -#if !defined(GRAPHICS_API_OPENGL_11) && defined(SUPPORT_DISTORTION_SHADER) - #include "shader_distortion.h" // Distortion shader to be embedded -#endif - - -//---------------------------------------------------------------------------------- -// Defines and Macros -//---------------------------------------------------------------------------------- -#define MATRIX_STACK_SIZE 16 // Matrix stack max size -#define MAX_DRAWS_BY_TEXTURE 256 // Draws are organized by texture changes -#define TEMP_VERTEX_BUFFER_SIZE 4096 // Temporal Vertex Buffer (required for vertex-transformations) - // NOTE: Every vertex are 3 floats (12 bytes) - -#ifndef GL_SHADING_LANGUAGE_VERSION - #define GL_SHADING_LANGUAGE_VERSION 0x8B8C -#endif - -#ifndef GL_COMPRESSED_RGB_S3TC_DXT1_EXT - #define GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0 -#endif -#ifndef GL_COMPRESSED_RGBA_S3TC_DXT1_EXT - #define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1 -#endif -#ifndef GL_COMPRESSED_RGBA_S3TC_DXT3_EXT - #define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2 -#endif -#ifndef GL_COMPRESSED_RGBA_S3TC_DXT5_EXT - #define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3 -#endif -#ifndef GL_ETC1_RGB8_OES - #define GL_ETC1_RGB8_OES 0x8D64 -#endif -#ifndef GL_COMPRESSED_RGB8_ETC2 - #define GL_COMPRESSED_RGB8_ETC2 0x9274 -#endif -#ifndef GL_COMPRESSED_RGBA8_ETC2_EAC - #define GL_COMPRESSED_RGBA8_ETC2_EAC 0x9278 -#endif -#ifndef GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG - #define GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG 0x8C00 -#endif -#ifndef GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG - #define GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG 0x8C02 -#endif -#ifndef GL_COMPRESSED_RGBA_ASTC_4x4_KHR - #define GL_COMPRESSED_RGBA_ASTC_4x4_KHR 0x93b0 -#endif -#ifndef GL_COMPRESSED_RGBA_ASTC_8x8_KHR - #define GL_COMPRESSED_RGBA_ASTC_8x8_KHR 0x93b7 -#endif - -#ifndef GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT - #define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF -#endif - -#ifndef GL_TEXTURE_MAX_ANISOTROPY_EXT - #define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE -#endif - -#if defined(GRAPHICS_API_OPENGL_11) - #define GL_UNSIGNED_SHORT_5_6_5 0x8363 - #define GL_UNSIGNED_SHORT_5_5_5_1 0x8034 - #define GL_UNSIGNED_SHORT_4_4_4_4 0x8033 -#endif - -#if defined(GRAPHICS_API_OPENGL_21) - #define GL_LUMINANCE 0x1909 - #define GL_LUMINANCE_ALPHA 0x190A -#endif - -#if defined(GRAPHICS_API_OPENGL_ES2) - #define glClearDepth glClearDepthf - #define GL_READ_FRAMEBUFFER GL_FRAMEBUFFER - #define GL_DRAW_FRAMEBUFFER GL_FRAMEBUFFER -#endif - -// Default vertex attribute names on shader to set location points -#define DEFAULT_ATTRIB_POSITION_NAME "vertexPosition" // shader-location = 0 -#define DEFAULT_ATTRIB_TEXCOORD_NAME "vertexTexCoord" // shader-location = 1 -#define DEFAULT_ATTRIB_NORMAL_NAME "vertexNormal" // shader-location = 2 -#define DEFAULT_ATTRIB_COLOR_NAME "vertexColor" // shader-location = 3 -#define DEFAULT_ATTRIB_TANGENT_NAME "vertexTangent" // shader-location = 4 -#define DEFAULT_ATTRIB_TEXCOORD2_NAME "vertexTexCoord2" // shader-location = 5 - -//---------------------------------------------------------------------------------- -// Types and Structures Definition -//---------------------------------------------------------------------------------- - -// Dynamic vertex buffers (position + texcoords + colors + indices arrays) -typedef struct DynamicBuffer { - int vCounter; // vertex position counter to process (and draw) from full buffer - int tcCounter; // vertex texcoord counter to process (and draw) from full buffer - int cCounter; // vertex color counter to process (and draw) from full buffer - float *vertices; // vertex position (XYZ - 3 components per vertex) (shader-location = 0) - float *texcoords; // vertex texture coordinates (UV - 2 components per vertex) (shader-location = 1) - unsigned char *colors; // vertex colors (RGBA - 4 components per vertex) (shader-location = 3) -#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) - unsigned int *indices; // vertex indices (in case vertex data comes indexed) (6 indices per quad) -#elif defined(GRAPHICS_API_OPENGL_ES2) - unsigned short *indices; // vertex indices (in case vertex data comes indexed) (6 indices per quad) - // NOTE: 6*2 byte = 12 byte, not alignment problem! -#endif - unsigned int vaoId; // OpenGL Vertex Array Object id - unsigned int vboId[4]; // OpenGL Vertex Buffer Objects id (4 types of vertex data) -} DynamicBuffer; - -// Draw call type -// NOTE: Used to track required draw-calls, organized by texture -typedef struct DrawCall { - int vertexCount; - GLuint vaoId; - GLuint textureId; - GLuint shaderId; - - Matrix projection; - Matrix modelview; - - // TODO: Store additional draw state data - //int blendMode; - //Guint fboId; -} DrawCall; - -#if defined(SUPPORT_VR_SIMULATOR) -// VR Stereo rendering configuration for simulator -typedef struct VrStereoConfig { - RenderTexture2D stereoFbo; // VR stereo rendering framebuffer - Shader distortionShader; // VR stereo rendering distortion shader - Rectangle eyesViewport[2]; // VR stereo rendering eyes viewports - Matrix eyesProjection[2]; // VR stereo rendering eyes projection matrices - Matrix eyesViewOffset[2]; // VR stereo rendering eyes view offset matrices -} VrStereoConfig; -#endif - -//---------------------------------------------------------------------------------- -// Global Variables Definition -//---------------------------------------------------------------------------------- -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) -static Matrix stack[MATRIX_STACK_SIZE]; -static int stackCounter = 0; - -static Matrix modelview; -static Matrix projection; -static Matrix *currentMatrix; -static int currentMatrixMode; - -static int currentDrawMode; - -static float currentDepth = -1.0f; - -static DynamicBuffer lines; // Default dynamic buffer for lines data -static DynamicBuffer triangles; // Default dynamic buffer for triangles data -static DynamicBuffer quads; // Default dynamic buffer for quads data (used to draw textures) - -// Default buffers draw calls -static DrawCall *draws; -static int drawsCounter; - -// Temp vertex buffer to be used with rlTranslate, rlRotate, rlScale -static Vector3 *tempBuffer; -static int tempBufferCount = 0; -static bool useTempBuffer = false; - -// Shaders -static unsigned int defaultVShaderId; // Default vertex shader id (used by default shader program) -static unsigned int defaultFShaderId; // Default fragment shader Id (used by default shader program) - -static Shader defaultShader; // Basic shader, support vertex color and diffuse texture -static Shader currentShader; // Shader to be used on rendering (by default, defaultShader) - -// Extension supported flag: VAO -static bool vaoSupported = false; // VAO support (OpenGL ES2 could not support VAO extension) - -// Extension supported flag: Compressed textures -static bool texCompETC1Supported = false; // ETC1 texture compression support -static bool texCompETC2Supported = false; // ETC2/EAC texture compression support -static bool texCompPVRTSupported = false; // PVR texture compression support -static bool texCompASTCSupported = false; // ASTC texture compression support - -#if defined(SUPPORT_VR_SIMULATOR) -// VR global variables -static VrStereoConfig vrConfig; // VR stereo configuration for simulator -static bool vrSimulatorReady = false; // VR simulator ready flag -static bool vrStereoRender = false; // VR stereo rendering enabled/disabled flag - // NOTE: This flag is useful to render data over stereo image (i.e. FPS) -#endif // defined(SUPPORT_VR_SIMULATOR) - -#endif // defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - -// Extension supported flag: Anisotropic filtering -static bool texAnisotropicFilterSupported = false; // Anisotropic texture filtering support -static float maxAnisotropicLevel = 0.0f; // Maximum anisotropy level supported (minimum is 2.0f) - -// Extension supported flag: Clamp mirror wrap mode -static bool texClampMirrorSupported = false; // Clamp mirror wrap mode supported - -#if defined(GRAPHICS_API_OPENGL_ES2) -// NOTE: VAO functionality is exposed through extensions (OES) -static PFNGLGENVERTEXARRAYSOESPROC glGenVertexArrays; -static PFNGLBINDVERTEXARRAYOESPROC glBindVertexArray; -static PFNGLDELETEVERTEXARRAYSOESPROC glDeleteVertexArrays; -//static PFNGLISVERTEXARRAYOESPROC glIsVertexArray; // NOTE: Fails in WebGL, omitted -#endif - -static bool debugMarkerSupported = false; - -// Compressed textures support flags -static bool texCompDXTSupported = false; // DDS texture compression support -static bool texNPOTSupported = false; // NPOT textures full support -static bool texFloatSupported = false; // float textures support (32 bit per channel) - -static int blendMode = 0; // Track current blending mode - -// White texture useful for plain color polys (required by shader) -static unsigned int whiteTexture; - -// Default framebuffer size -static int screenWidth; // Default framebuffer width -static int screenHeight; // Default framebuffer height - -//---------------------------------------------------------------------------------- -// Module specific Functions Declaration -//---------------------------------------------------------------------------------- -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) -static unsigned int CompileShader(const char *shaderStr, int type); // Compile custom shader and return shader id -static unsigned int LoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId); // Load custom shader program - -static Shader LoadShaderDefault(void); // Load default shader (just vertex positioning and texture coloring) -static void SetShaderDefaultLocations(Shader *shader); // Bind default shader locations (attributes and uniforms) -static void UnloadShaderDefault(void); // Unload default shader - -static void LoadBuffersDefault(void); // Load default internal buffers (lines, triangles, quads) -static void UpdateBuffersDefault(void); // Update default internal buffers (VAOs/VBOs) with vertex data -static void DrawBuffersDefault(void); // Draw default internal buffers vertex data -static void UnloadBuffersDefault(void); // Unload default internal buffers vertex data from CPU and GPU - -static void GenDrawCube(void); // Generate and draw cube -static void GenDrawQuad(void); // Generate and draw quad - -#if defined(SUPPORT_VR_SIMULATOR) -static void SetStereoConfig(VrDeviceInfo info); // Configure stereo rendering (including distortion shader) with HMD device parameters -static void SetStereoView(int eye, Matrix matProjection, Matrix matModelView); // Set internal projection and modelview matrix depending on eye -#endif - -#endif // defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - -// Get OpenGL internal formats and data type from raylib PixelFormat -static void GetGlFormats(int format, int *glInternalFormat, int *glFormat, int *glType); - -#if defined(GRAPHICS_API_OPENGL_11) -static int GenerateMipmaps(unsigned char *data, int baseWidth, int baseHeight); -static Color *GenNextMipmap(Color *srcData, int srcWidth, int srcHeight); -#endif - -//---------------------------------------------------------------------------------- -// Module Functions Definition - Matrix operations -//---------------------------------------------------------------------------------- - -#if defined(GRAPHICS_API_OPENGL_11) - -// Fallback to OpenGL 1.1 function calls -//--------------------------------------- -void rlMatrixMode(int mode) -{ - switch (mode) - { - case RL_PROJECTION: glMatrixMode(GL_PROJECTION); break; - case RL_MODELVIEW: glMatrixMode(GL_MODELVIEW); break; - case RL_TEXTURE: glMatrixMode(GL_TEXTURE); break; - default: break; - } -} - -void rlFrustum(double left, double right, double bottom, double top, double zNear, double zFar) -{ - glFrustum(left, right, bottom, top, zNear, zFar); -} - -void rlOrtho(double left, double right, double bottom, double top, double zNear, double zFar) -{ - glOrtho(left, right, bottom, top, zNear, zFar); -} - -void rlPushMatrix(void) { glPushMatrix(); } -void rlPopMatrix(void) { glPopMatrix(); } -void rlLoadIdentity(void) { glLoadIdentity(); } -void rlTranslatef(float x, float y, float z) { glTranslatef(x, y, z); } -void rlRotatef(float angleDeg, float x, float y, float z) { glRotatef(angleDeg, x, y, z); } -void rlScalef(float x, float y, float z) { glScalef(x, y, z); } -void rlMultMatrixf(float *matf) { glMultMatrixf(matf); } - -#elif defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - -// Choose the current matrix to be transformed -void rlMatrixMode(int mode) -{ - if (mode == RL_PROJECTION) currentMatrix = &projection; - else if (mode == RL_MODELVIEW) currentMatrix = &modelview; - //else if (mode == RL_TEXTURE) // Not supported - - currentMatrixMode = mode; -} - -// Push the current matrix to stack -void rlPushMatrix(void) -{ - if (stackCounter == MATRIX_STACK_SIZE - 1) - { - TraceLog(LOG_ERROR, "Stack Buffer Overflow (MAX %i Matrix)", MATRIX_STACK_SIZE); - } - - stack[stackCounter] = *currentMatrix; - rlLoadIdentity(); // TODO: Review matrix stack logic! - stackCounter++; - - if (currentMatrixMode == RL_MODELVIEW) useTempBuffer = true; -} - -// Pop lattest inserted matrix from stack -void rlPopMatrix(void) -{ - if (stackCounter > 0) - { - Matrix mat = stack[stackCounter - 1]; - *currentMatrix = mat; - stackCounter--; - } -} - -// Reset current matrix to identity matrix -void rlLoadIdentity(void) -{ - *currentMatrix = MatrixIdentity(); -} - -// Multiply the current matrix by a translation matrix -void rlTranslatef(float x, float y, float z) -{ - Matrix matTranslation = MatrixTranslate(x, y, z); - - // NOTE: We transpose matrix with multiplication order - *currentMatrix = MatrixMultiply(matTranslation, *currentMatrix); -} - -// Multiply the current matrix by a rotation matrix -void rlRotatef(float angleDeg, float x, float y, float z) -{ - Matrix matRotation = MatrixIdentity(); - - Vector3 axis = (Vector3){ x, y, z }; - matRotation = MatrixRotate(Vector3Normalize(axis), angleDeg*DEG2RAD); - - // NOTE: We transpose matrix with multiplication order - *currentMatrix = MatrixMultiply(matRotation, *currentMatrix); -} - -// Multiply the current matrix by a scaling matrix -void rlScalef(float x, float y, float z) -{ - Matrix matScale = MatrixScale(x, y, z); - - // NOTE: We transpose matrix with multiplication order - *currentMatrix = MatrixMultiply(matScale, *currentMatrix); -} - -// Multiply the current matrix by another matrix -void rlMultMatrixf(float *matf) -{ - // Matrix creation from array - Matrix mat = { matf[0], matf[4], matf[8], matf[12], - matf[1], matf[5], matf[9], matf[13], - matf[2], matf[6], matf[10], matf[14], - matf[3], matf[7], matf[11], matf[15] }; - - *currentMatrix = MatrixMultiply(*currentMatrix, mat); -} - -// Multiply the current matrix by a perspective matrix generated by parameters -void rlFrustum(double left, double right, double bottom, double top, double near, double far) -{ - Matrix matPerps = MatrixFrustum(left, right, bottom, top, near, far); - - *currentMatrix = MatrixMultiply(*currentMatrix, matPerps); -} - -// Multiply the current matrix by an orthographic matrix generated by parameters -void rlOrtho(double left, double right, double bottom, double top, double near, double far) -{ - Matrix matOrtho = MatrixOrtho(left, right, bottom, top, near, far); - - *currentMatrix = MatrixMultiply(*currentMatrix, matOrtho); -} - -#endif - -// Set the viewport area (transformation from normalized device coordinates to window coordinates) -// NOTE: Updates global variables: screenWidth, screenHeight -void rlViewport(int x, int y, int width, int height) -{ - glViewport(x, y, width, height); -} - -//---------------------------------------------------------------------------------- -// Module Functions Definition - Vertex level operations -//---------------------------------------------------------------------------------- -#if defined(GRAPHICS_API_OPENGL_11) - -// Fallback to OpenGL 1.1 function calls -//--------------------------------------- -void rlBegin(int mode) -{ - switch (mode) - { - case RL_LINES: glBegin(GL_LINES); break; - case RL_TRIANGLES: glBegin(GL_TRIANGLES); break; - case RL_QUADS: glBegin(GL_QUADS); break; - default: break; - } -} - -void rlEnd() { glEnd(); } -void rlVertex2i(int x, int y) { glVertex2i(x, y); } -void rlVertex2f(float x, float y) { glVertex2f(x, y); } -void rlVertex3f(float x, float y, float z) { glVertex3f(x, y, z); } -void rlTexCoord2f(float x, float y) { glTexCoord2f(x, y); } -void rlNormal3f(float x, float y, float z) { glNormal3f(x, y, z); } -void rlColor4ub(byte r, byte g, byte b, byte a) { glColor4ub(r, g, b, a); } -void rlColor3f(float x, float y, float z) { glColor3f(x, y, z); } -void rlColor4f(float x, float y, float z, float w) { glColor4f(x, y, z, w); } - -#elif defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - -// Initialize drawing mode (how to organize vertex) -void rlBegin(int mode) -{ - // Draw mode can only be RL_LINES, RL_TRIANGLES and RL_QUADS - currentDrawMode = mode; -} - -// Finish vertex providing -void rlEnd(void) -{ - if (useTempBuffer) - { - // NOTE: In this case, *currentMatrix is already transposed because transposing has been applied - // independently to translation-scale-rotation matrices -> t(M1 x M2) = t(M2) x t(M1) - // This way, rlTranslatef(), rlRotatef()... behaviour is the same than OpenGL 1.1 - - // Apply transformation matrix to all temp vertices - for (int i = 0; i < tempBufferCount; i++) tempBuffer[i] = Vector3Transform(tempBuffer[i], *currentMatrix); - - // Deactivate tempBuffer usage to allow rlVertex3f do its job - useTempBuffer = false; - - // Copy all transformed vertices to right VAO - for (int i = 0; i < tempBufferCount; i++) rlVertex3f(tempBuffer[i].x, tempBuffer[i].y, tempBuffer[i].z); - - // Reset temp buffer - tempBufferCount = 0; - } - - // Make sure vertexCount is the same for vertices-texcoords-normals-colors - // NOTE: In OpenGL 1.1, one glColor call can be made for all the subsequent glVertex calls. - switch (currentDrawMode) - { - case RL_LINES: - { - if (lines.vCounter != lines.cCounter) - { - int addColors = lines.vCounter - lines.cCounter; - - for (int i = 0; i < addColors; i++) - { - lines.colors[4*lines.cCounter] = lines.colors[4*lines.cCounter - 4]; - lines.colors[4*lines.cCounter + 1] = lines.colors[4*lines.cCounter - 3]; - lines.colors[4*lines.cCounter + 2] = lines.colors[4*lines.cCounter - 2]; - lines.colors[4*lines.cCounter + 3] = lines.colors[4*lines.cCounter - 1]; - - lines.cCounter++; - } - } - } break; - case RL_TRIANGLES: - { - if (triangles.vCounter != triangles.cCounter) - { - int addColors = triangles.vCounter - triangles.cCounter; - - for (int i = 0; i < addColors; i++) - { - triangles.colors[4*triangles.cCounter] = triangles.colors[4*triangles.cCounter - 4]; - triangles.colors[4*triangles.cCounter + 1] = triangles.colors[4*triangles.cCounter - 3]; - triangles.colors[4*triangles.cCounter + 2] = triangles.colors[4*triangles.cCounter - 2]; - triangles.colors[4*triangles.cCounter + 3] = triangles.colors[4*triangles.cCounter - 1]; - - triangles.cCounter++; - } - } - } break; - case RL_QUADS: - { - // Make sure colors count match vertex count - if (quads.vCounter != quads.cCounter) - { - int addColors = quads.vCounter - quads.cCounter; - - for (int i = 0; i < addColors; i++) - { - quads.colors[4*quads.cCounter] = quads.colors[4*quads.cCounter - 4]; - quads.colors[4*quads.cCounter + 1] = quads.colors[4*quads.cCounter - 3]; - quads.colors[4*quads.cCounter + 2] = quads.colors[4*quads.cCounter - 2]; - quads.colors[4*quads.cCounter + 3] = quads.colors[4*quads.cCounter - 1]; - - quads.cCounter++; - } - } - - // Make sure texcoords count match vertex count - if (quads.vCounter != quads.tcCounter) - { - int addTexCoords = quads.vCounter - quads.tcCounter; - - for (int i = 0; i < addTexCoords; i++) - { - quads.texcoords[2*quads.tcCounter] = 0.0f; - quads.texcoords[2*quads.tcCounter + 1] = 0.0f; - - quads.tcCounter++; - } - } - - // TODO: Make sure normals count match vertex count... if normals support is added in a future... :P - - } break; - default: break; - } - - // NOTE: Depth increment is dependant on rlOrtho(): z-near and z-far values, - // as well as depth buffer bit-depth (16bit or 24bit or 32bit) - // Correct increment formula would be: depthInc = (zfar - znear)/pow(2, bits) - currentDepth += (1.0f/20000.0f); - - // Verify internal buffers limits - // NOTE: This check is combined with usage of rlCheckBufferLimit() - if ((lines.vCounter/2 >= MAX_LINES_BATCH - 2) || - (triangles.vCounter/3 >= MAX_TRIANGLES_BATCH - 3) || - (quads.vCounter/4 >= MAX_QUADS_BATCH - 4)) rlglDraw(); -} - -// Define one vertex (position) -void rlVertex3f(float x, float y, float z) -{ - if (useTempBuffer) - { - tempBuffer[tempBufferCount].x = x; - tempBuffer[tempBufferCount].y = y; - tempBuffer[tempBufferCount].z = z; - tempBufferCount++; - } - else - { - switch (currentDrawMode) - { - case RL_LINES: - { - // Verify that MAX_LINES_BATCH limit not reached - if (lines.vCounter/2 < MAX_LINES_BATCH) - { - lines.vertices[3*lines.vCounter] = x; - lines.vertices[3*lines.vCounter + 1] = y; - lines.vertices[3*lines.vCounter + 2] = z; - - lines.vCounter++; - } - else TraceLog(LOG_ERROR, "MAX_LINES_BATCH overflow"); - - } break; - case RL_TRIANGLES: - { - // Verify that MAX_TRIANGLES_BATCH limit not reached - if (triangles.vCounter/3 < MAX_TRIANGLES_BATCH) - { - triangles.vertices[3*triangles.vCounter] = x; - triangles.vertices[3*triangles.vCounter + 1] = y; - triangles.vertices[3*triangles.vCounter + 2] = z; - - triangles.vCounter++; - } - else TraceLog(LOG_ERROR, "MAX_TRIANGLES_BATCH overflow"); - - } break; - case RL_QUADS: - { - // Verify that MAX_QUADS_BATCH limit not reached - if (quads.vCounter/4 < MAX_QUADS_BATCH) - { - quads.vertices[3*quads.vCounter] = x; - quads.vertices[3*quads.vCounter + 1] = y; - quads.vertices[3*quads.vCounter + 2] = z; - - quads.vCounter++; - - draws[drawsCounter - 1].vertexCount++; - } - else TraceLog(LOG_ERROR, "MAX_QUADS_BATCH overflow"); - - } break; - default: break; - } - } -} - -// Define one vertex (position) -void rlVertex2f(float x, float y) -{ - rlVertex3f(x, y, currentDepth); -} - -// Define one vertex (position) -void rlVertex2i(int x, int y) -{ - rlVertex3f((float)x, (float)y, currentDepth); -} - -// Define one vertex (texture coordinate) -// NOTE: Texture coordinates are limited to QUADS only -void rlTexCoord2f(float x, float y) -{ - if (currentDrawMode == RL_QUADS) - { - quads.texcoords[2*quads.tcCounter] = x; - quads.texcoords[2*quads.tcCounter + 1] = y; - - quads.tcCounter++; - } -} - -// Define one vertex (normal) -// NOTE: Normals limited to TRIANGLES only ? -void rlNormal3f(float x, float y, float z) -{ - // TODO: Normals usage... -} - -// Define one vertex (color) -void rlColor4ub(byte x, byte y, byte z, byte w) -{ - switch (currentDrawMode) - { - case RL_LINES: - { - lines.colors[4*lines.cCounter] = x; - lines.colors[4*lines.cCounter + 1] = y; - lines.colors[4*lines.cCounter + 2] = z; - lines.colors[4*lines.cCounter + 3] = w; - - lines.cCounter++; - - } break; - case RL_TRIANGLES: - { - triangles.colors[4*triangles.cCounter] = x; - triangles.colors[4*triangles.cCounter + 1] = y; - triangles.colors[4*triangles.cCounter + 2] = z; - triangles.colors[4*triangles.cCounter + 3] = w; - - triangles.cCounter++; - - } break; - case RL_QUADS: - { - quads.colors[4*quads.cCounter] = x; - quads.colors[4*quads.cCounter + 1] = y; - quads.colors[4*quads.cCounter + 2] = z; - quads.colors[4*quads.cCounter + 3] = w; - - quads.cCounter++; - - } break; - default: break; - } -} - -// Define one vertex (color) -void rlColor4f(float r, float g, float b, float a) -{ - rlColor4ub((byte)(r*255), (byte)(g*255), (byte)(b*255), (byte)(a*255)); -} - -// Define one vertex (color) -void rlColor3f(float x, float y, float z) -{ - rlColor4ub((byte)(x*255), (byte)(y*255), (byte)(z*255), 255); -} - -#endif - -//---------------------------------------------------------------------------------- -// Module Functions Definition - OpenGL equivalent functions (common to 1.1, 3.3+, ES2) -//---------------------------------------------------------------------------------- - -// Enable texture usage -void rlEnableTexture(unsigned int id) -{ -#if defined(GRAPHICS_API_OPENGL_11) - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, id); -#endif - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (draws[drawsCounter - 1].textureId != id) - { - if (draws[drawsCounter - 1].vertexCount > 0) drawsCounter++; - - if (drawsCounter >= MAX_DRAWS_BY_TEXTURE) - { - rlglDraw(); - drawsCounter = 1; - } - - draws[drawsCounter - 1].textureId = id; - draws[drawsCounter - 1].vertexCount = 0; - } -#endif -} - -// Disable texture usage -void rlDisableTexture(void) -{ -#if defined(GRAPHICS_API_OPENGL_11) - glDisable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, 0); -#else - // NOTE: If quads batch limit is reached, - // we force a draw call and next batch starts - if (quads.vCounter/4 >= MAX_QUADS_BATCH) rlglDraw(); -#endif -} - -// Set texture parameters (wrap mode/filter mode) -void rlTextureParameters(unsigned int id, int param, int value) -{ - glBindTexture(GL_TEXTURE_2D, id); - - switch (param) - { - case RL_TEXTURE_WRAP_S: - case RL_TEXTURE_WRAP_T: - { - if ((value == RL_WRAP_CLAMP_MIRROR) && !texClampMirrorSupported) TraceLog(LOG_WARNING, "Clamp mirror wrap mode not supported"); - else glTexParameteri(GL_TEXTURE_2D, param, value); - } break; - case RL_TEXTURE_MAG_FILTER: - case RL_TEXTURE_MIN_FILTER: glTexParameteri(GL_TEXTURE_2D, param, value); break; - case RL_TEXTURE_ANISOTROPIC_FILTER: - { - if (value <= maxAnisotropicLevel) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (float)value); - else if (maxAnisotropicLevel > 0.0f) - { - TraceLog(LOG_WARNING, "[TEX ID %i] Maximum anisotropic filter level supported is %iX", id, maxAnisotropicLevel); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (float)value); - } - else TraceLog(LOG_WARNING, "Anisotropic filtering not supported"); - } break; - default: break; - } - - glBindTexture(GL_TEXTURE_2D, 0); -} - -// Enable rendering to texture (fbo) -void rlEnableRenderTexture(unsigned int id) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glBindFramebuffer(GL_FRAMEBUFFER, id); - - //glDisable(GL_CULL_FACE); // Allow double side drawing for texture flipping - //glCullFace(GL_FRONT); -#endif -} - -// Disable rendering to texture -void rlDisableRenderTexture(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glBindFramebuffer(GL_FRAMEBUFFER, 0); - - //glEnable(GL_CULL_FACE); - //glCullFace(GL_BACK); -#endif -} - -// Enable depth test -void rlEnableDepthTest(void) -{ - glEnable(GL_DEPTH_TEST); -} - -// Disable depth test -void rlDisableDepthTest(void) -{ - glDisable(GL_DEPTH_TEST); -} - -// Enable wire mode -void rlEnableWireMode(void) -{ -#if defined (GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) - // NOTE: glPolygonMode() not available on OpenGL ES - glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); -#endif -} - -// Disable wire mode -void rlDisableWireMode(void) -{ -#if defined (GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) - // NOTE: glPolygonMode() not available on OpenGL ES - glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); -#endif -} - -// Unload texture from GPU memory -void rlDeleteTextures(unsigned int id) -{ - if (id > 0) glDeleteTextures(1, &id); -} - -// Unload render texture from GPU memory -void rlDeleteRenderTextures(RenderTexture2D target) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (target.id > 0) glDeleteFramebuffers(1, &target.id); - if (target.texture.id > 0) glDeleteTextures(1, &target.texture.id); - if (target.depth.id > 0) glDeleteTextures(1, &target.depth.id); - - TraceLog(LOG_INFO, "[FBO ID %i] Unloaded render texture data from VRAM (GPU)", target.id); -#endif -} - -// Unload shader from GPU memory -void rlDeleteShader(unsigned int id) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (id != 0) glDeleteProgram(id); -#endif -} - -// Unload vertex data (VAO) from GPU memory -void rlDeleteVertexArrays(unsigned int id) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (vaoSupported) - { - if (id != 0) glDeleteVertexArrays(1, &id); - TraceLog(LOG_INFO, "[VAO ID %i] Unloaded model data from VRAM (GPU)", id); - } -#endif -} - -// Unload vertex data (VBO) from GPU memory -void rlDeleteBuffers(unsigned int id) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (id != 0) - { - glDeleteBuffers(1, &id); - if (!vaoSupported) TraceLog(LOG_INFO, "[VBO ID %i] Unloaded model vertex data from VRAM (GPU)", id); - } -#endif -} - -// Clear color buffer with color -void rlClearColor(byte r, byte g, byte b, byte a) -{ - // Color values clamp to 0.0f(0) and 1.0f(255) - float cr = (float)r/255; - float cg = (float)g/255; - float cb = (float)b/255; - float ca = (float)a/255; - - glClearColor(cr, cg, cb, ca); -} - -// Clear used screen buffers (color and depth) -void rlClearScreenBuffers(void) -{ - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear used buffers: Color and Depth (Depth is used for 3D) - //glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); // Stencil buffer not used... -} - -//---------------------------------------------------------------------------------- -// Module Functions Definition - rlgl Functions -//---------------------------------------------------------------------------------- - -// Initialize rlgl: OpenGL extensions, default buffers/shaders/textures, OpenGL states -void rlglInit(int width, int height) -{ - // Check OpenGL information and capabilities - //------------------------------------------------------------------------------ - - // Print current OpenGL and GLSL version - TraceLog(LOG_INFO, "GPU: Vendor: %s", glGetString(GL_VENDOR)); - TraceLog(LOG_INFO, "GPU: Renderer: %s", glGetString(GL_RENDERER)); - TraceLog(LOG_INFO, "GPU: Version: %s", glGetString(GL_VERSION)); - TraceLog(LOG_INFO, "GPU: GLSL: %s", glGetString(GL_SHADING_LANGUAGE_VERSION)); - - // NOTE: We can get a bunch of extra information about GPU capabilities (glGet*) - //int maxTexSize; - //glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTexSize); - //TraceLog(LOG_INFO, "GL_MAX_TEXTURE_SIZE: %i", maxTexSize); - - //GL_MAX_TEXTURE_IMAGE_UNITS - //GL_MAX_VIEWPORT_DIMS - - //int numAuxBuffers; - //glGetIntegerv(GL_AUX_BUFFERS, &numAuxBuffers); - //TraceLog(LOG_INFO, "GL_AUX_BUFFERS: %i", numAuxBuffers); - - //GLint numComp = 0; - //GLint format[32] = { 0 }; - //glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numComp); - //glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, format); - //for (int i = 0; i < numComp; i++) TraceLog(LOG_INFO, "Supported compressed format: 0x%x", format[i]); - - // NOTE: We don't need that much data on screen... right now... - -#if defined(GRAPHICS_API_OPENGL_11) - //TraceLog(LOG_INFO, "OpenGL 1.1 (or driver default) profile initialized"); -#endif - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Get supported extensions list - GLint numExt = 0; - -#if defined(GRAPHICS_API_OPENGL_33) - - // NOTE: On OpenGL 3.3 VAO and NPOT are supported by default - vaoSupported = true; - texNPOTSupported = true; - texFloatSupported = true; - - // We get a list of available extensions and we check for some of them (compressed textures) - // NOTE: We don't need to check again supported extensions but we do (GLAD already dealt with that) - glGetIntegerv(GL_NUM_EXTENSIONS, &numExt); - -#ifdef _MSC_VER - const char **extList = malloc(sizeof(const char *)*numExt); -#else - const char *extList[numExt]; -#endif - - for (int i = 0; i < numExt; i++) extList[i] = (char *)glGetStringi(GL_EXTENSIONS, i); - -#elif defined(GRAPHICS_API_OPENGL_ES2) - char *extensions = (char *)glGetString(GL_EXTENSIONS); // One big const string - - // NOTE: We have to duplicate string because glGetString() returns a const value - // If not duplicated, it fails in some systems (Raspberry Pi) - // Equivalent to function: char *strdup(const char *str) - char *extensionsDup; - size_t len = strlen(extensions) + 1; - void *newstr = malloc(len); - if (newstr == NULL) extensionsDup = NULL; - extensionsDup = (char *)memcpy(newstr, extensions, len); - - // NOTE: String could be splitted using strtok() function (string.h) - // NOTE: strtok() modifies the received string, it can not be const - - char *extList[512]; // Allocate 512 strings pointers (2 KB) - - extList[numExt] = strtok(extensionsDup, " "); - - while (extList[numExt] != NULL) - { - numExt++; - extList[numExt] = strtok(NULL, " "); - } - - free(extensionsDup); // Duplicated string must be deallocated - - numExt -= 1; -#endif - - TraceLog(LOG_INFO, "Number of supported extensions: %i", numExt); - - // Show supported extensions - //for (int i = 0; i < numExt; i++) TraceLog(LOG_INFO, "Supported extension: %s", extList[i]); - - // Check required extensions - for (int i = 0; i < numExt; i++) - { -#if defined(GRAPHICS_API_OPENGL_ES2) - // Check VAO support - // NOTE: Only check on OpenGL ES, OpenGL 3.3 has VAO support as core feature - if (strcmp(extList[i], (const char *)"GL_OES_vertex_array_object") == 0) - { - vaoSupported = true; - - // The extension is supported by our hardware and driver, try to get related functions pointers - // NOTE: emscripten does not support VAOs natively, it uses emulation and it reduces overall performance... - glGenVertexArrays = (PFNGLGENVERTEXARRAYSOESPROC)eglGetProcAddress("glGenVertexArraysOES"); - glBindVertexArray = (PFNGLBINDVERTEXARRAYOESPROC)eglGetProcAddress("glBindVertexArrayOES"); - glDeleteVertexArrays = (PFNGLDELETEVERTEXARRAYSOESPROC)eglGetProcAddress("glDeleteVertexArraysOES"); - //glIsVertexArray = (PFNGLISVERTEXARRAYOESPROC)eglGetProcAddress("glIsVertexArrayOES"); // NOTE: Fails in WebGL, omitted - } - - // Check NPOT textures support - // NOTE: Only check on OpenGL ES, OpenGL 3.3 has NPOT textures full support as core feature - if (strcmp(extList[i], (const char *)"GL_OES_texture_npot") == 0) texNPOTSupported = true; - - // Check texture float support - if (strcmp(extList[i], (const char *)"GL_OES_texture_float") == 0) texFloatSupported = true; -#endif - - // DDS texture compression support - if ((strcmp(extList[i], (const char *)"GL_EXT_texture_compression_s3tc") == 0) || - (strcmp(extList[i], (const char *)"GL_WEBGL_compressed_texture_s3tc") == 0) || - (strcmp(extList[i], (const char *)"GL_WEBKIT_WEBGL_compressed_texture_s3tc") == 0)) texCompDXTSupported = true; - - // ETC1 texture compression support - if ((strcmp(extList[i], (const char *)"GL_OES_compressed_ETC1_RGB8_texture") == 0) || - (strcmp(extList[i], (const char *)"GL_WEBGL_compressed_texture_etc1") == 0)) texCompETC1Supported = true; - - // ETC2/EAC texture compression support - if (strcmp(extList[i], (const char *)"GL_ARB_ES3_compatibility") == 0) texCompETC2Supported = true; - - // PVR texture compression support - if (strcmp(extList[i], (const char *)"GL_IMG_texture_compression_pvrtc") == 0) texCompPVRTSupported = true; - - // ASTC texture compression support - if (strcmp(extList[i], (const char *)"GL_KHR_texture_compression_astc_hdr") == 0) texCompASTCSupported = true; - - // Anisotropic texture filter support - if (strcmp(extList[i], (const char *)"GL_EXT_texture_filter_anisotropic") == 0) - { - texAnisotropicFilterSupported = true; - glGetFloatv(0x84FF, &maxAnisotropicLevel); // GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT - } - - // Clamp mirror wrap mode supported - if (strcmp(extList[i], (const char *)"GL_EXT_texture_mirror_clamp") == 0) texClampMirrorSupported = true; - - // Debug marker support - if(strcmp(extList[i], (const char *)"GL_EXT_debug_marker") == 0) debugMarkerSupported = true; - } - -#if defined(_MSC_VER) - //free(extList); -#endif - -#if defined(GRAPHICS_API_OPENGL_ES2) - if (vaoSupported) TraceLog(LOG_INFO, "[EXTENSION] VAO extension detected, VAO functions initialized successfully"); - else TraceLog(LOG_WARNING, "[EXTENSION] VAO extension not found, VAO usage not supported"); - - if (texNPOTSupported) TraceLog(LOG_INFO, "[EXTENSION] NPOT textures extension detected, full NPOT textures supported"); - else TraceLog(LOG_WARNING, "[EXTENSION] NPOT textures extension not found, limited NPOT support (no-mipmaps, no-repeat)"); -#endif - - if (texCompDXTSupported) TraceLog(LOG_INFO, "[EXTENSION] DXT compressed textures supported"); - if (texCompETC1Supported) TraceLog(LOG_INFO, "[EXTENSION] ETC1 compressed textures supported"); - if (texCompETC2Supported) TraceLog(LOG_INFO, "[EXTENSION] ETC2/EAC compressed textures supported"); - if (texCompPVRTSupported) TraceLog(LOG_INFO, "[EXTENSION] PVRT compressed textures supported"); - if (texCompASTCSupported) TraceLog(LOG_INFO, "[EXTENSION] ASTC compressed textures supported"); - - if (texAnisotropicFilterSupported) TraceLog(LOG_INFO, "[EXTENSION] Anisotropic textures filtering supported (max: %.0fX)", maxAnisotropicLevel); - if (texClampMirrorSupported) TraceLog(LOG_INFO, "[EXTENSION] Clamp mirror wrap texture mode supported"); - - if (debugMarkerSupported) TraceLog(LOG_INFO, "[EXTENSION] Debug Marker supported"); - - // Initialize buffers, default shaders and default textures - //---------------------------------------------------------- - - // Init default white texture - unsigned char pixels[4] = { 255, 255, 255, 255 }; // 1 pixel RGBA (4 bytes) - - whiteTexture = rlLoadTexture(pixels, 1, 1, UNCOMPRESSED_R8G8B8A8, 1); - - if (whiteTexture != 0) TraceLog(LOG_INFO, "[TEX ID %i] Base white texture loaded successfully", whiteTexture); - else TraceLog(LOG_WARNING, "Base white texture could not be loaded"); - - // Init default Shader (customized for GL 3.3 and ES2) - defaultShader = LoadShaderDefault(); - currentShader = defaultShader; - - // Init default vertex arrays buffers (lines, triangles, quads) - LoadBuffersDefault(); - - // Init temp vertex buffer, used when transformation required (translate, rotate, scale) - tempBuffer = (Vector3 *)malloc(sizeof(Vector3)*TEMP_VERTEX_BUFFER_SIZE); - - for (int i = 0; i < TEMP_VERTEX_BUFFER_SIZE; i++) tempBuffer[i] = Vector3Zero(); - - // Init draw calls tracking system - draws = (DrawCall *)malloc(sizeof(DrawCall)*MAX_DRAWS_BY_TEXTURE); - - for (int i = 0; i < MAX_DRAWS_BY_TEXTURE; i++) - { - draws[i].textureId = 0; - draws[i].vertexCount = 0; - } - - drawsCounter = 1; - draws[drawsCounter - 1].textureId = whiteTexture; - currentDrawMode = RL_TRIANGLES; // Set default draw mode - - // Init internal matrix stack (emulating OpenGL 1.1) - for (int i = 0; i < MATRIX_STACK_SIZE; i++) stack[i] = MatrixIdentity(); - - // Init internal projection and modelview matrices - projection = MatrixIdentity(); - modelview = MatrixIdentity(); - currentMatrix = &modelview; -#endif // defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - - // Initialize OpenGL default states - //---------------------------------------------------------- - - // Init state: Depth test - glDepthFunc(GL_LEQUAL); // Type of depth testing to apply - glDisable(GL_DEPTH_TEST); // Disable depth testing for 2D (only used for 3D) - - // Init state: Blending mode - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); // Color blending function (how colors are mixed) - glEnable(GL_BLEND); // Enable color blending (required to work with transparencies) - - // Init state: Culling - // NOTE: All shapes/models triangles are drawn CCW - glCullFace(GL_BACK); // Cull the back face (default) - glFrontFace(GL_CCW); // Front face are defined counter clockwise (default) - glEnable(GL_CULL_FACE); // Enable backface culling - -#if defined(GRAPHICS_API_OPENGL_11) - // Init state: Color hints (deprecated in OpenGL 3.0+) - glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Improve quality of color and texture coordinate interpolation - glShadeModel(GL_SMOOTH); // Smooth shading between vertex (vertex colors interpolation) -#endif - - // Init state: Color/Depth buffers clear - glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Set clear color (black) - glClearDepth(1.0f); // Set clear depth value (default) - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear color and depth buffers (depth buffer required for 3D) - - // Store screen size into global variables - screenWidth = width; - screenHeight = height; - - TraceLog(LOG_INFO, "OpenGL default states initialized successfully"); -} - -// Vertex Buffer Object deinitialization (memory free) -void rlglClose(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - UnloadShaderDefault(); // Unload default shader - UnloadBuffersDefault(); // Unload default buffers (lines, triangles, quads) - glDeleteTextures(1, &whiteTexture); // Unload default texture - - TraceLog(LOG_INFO, "[TEX ID %i] Unloaded texture data (base white texture) from VRAM", whiteTexture); - - free(draws); -#endif -} - -// Drawing batches: triangles, quads, lines -void rlglDraw(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: In a future version, models could be stored in a stack... - //for (int i = 0; i < modelsCount; i++) rlDrawMesh(models[i]->mesh, models[i]->material, models[i]->transform); - - // NOTE: Default buffers upload and draw - UpdateBuffersDefault(); - DrawBuffersDefault(); // NOTE: Stereo rendering is checked inside -#endif -} - -// Returns current OpenGL version -int rlGetVersion(void) -{ -#if defined(GRAPHICS_API_OPENGL_11) - return OPENGL_11; -#elif defined(GRAPHICS_API_OPENGL_21) - #if defined(__APPLE__) - return OPENGL_33; // NOTE: Force OpenGL 3.3 on OSX - #else - return OPENGL_21; - #endif -#elif defined(GRAPHICS_API_OPENGL_33) - return OPENGL_33; -#elif defined(GRAPHICS_API_OPENGL_ES2) - return OPENGL_ES_20; -#endif -} - -// Check internal buffer overflow for a given number of vertex -bool rlCheckBufferLimit(int type, int vCount) -{ - bool overflow = false; -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - switch (type) - { - case RL_LINES: overflow = ((lines.vCounter + vCount)/2 >= MAX_LINES_BATCH); break; - case RL_TRIANGLES: overflow = ((triangles.vCounter + vCount)/3 >= MAX_TRIANGLES_BATCH); break; - case RL_QUADS: overflow = ((quads.vCounter + vCount)/4 >= MAX_QUADS_BATCH); break; - default: break; - } -#endif - return overflow; -} - -// Set debug marker -void rlSetDebugMarker(const char *text) -{ -#if defined(GRAPHICS_API_OPENGL_33) - if (debugMarkerSupported) glInsertEventMarkerEXT(0, text); -#endif -} - -// Load OpenGL extensions -// NOTE: External loader function could be passed as a pointer -void rlLoadExtensions(void *loader) -{ -#if defined(GRAPHICS_API_OPENGL_33) - // NOTE: glad is generated and contains only required OpenGL 3.3 Core extensions (and lower versions) - #if !defined(__APPLE__) - if (!gladLoadGLLoader((GLADloadproc)loader)) TraceLog(LOG_WARNING, "GLAD: Cannot load OpenGL extensions"); - else TraceLog(LOG_INFO, "GLAD: OpenGL extensions loaded successfully"); - - #if defined(GRAPHICS_API_OPENGL_21) - if (GLAD_GL_VERSION_2_1) TraceLog(LOG_INFO, "OpenGL 2.1 profile supported"); - #elif defined(GRAPHICS_API_OPENGL_33) - if(GLAD_GL_VERSION_3_3) TraceLog(LOG_INFO, "OpenGL 3.3 Core profile supported"); - else TraceLog(LOG_ERROR, "OpenGL 3.3 Core profile not supported"); - #endif - #endif - - // With GLAD, we can check if an extension is supported using the GLAD_GL_xxx booleans - //if (GLAD_GL_ARB_vertex_array_object) // Use GL_ARB_vertex_array_object -#endif -} - -// Get world coordinates from screen coordinates -Vector3 rlUnproject(Vector3 source, Matrix proj, Matrix view) -{ - Vector3 result = { 0.0f, 0.0f, 0.0f }; - - // Calculate unproject matrix (multiply view patrix by projection matrix) and invert it - Matrix matViewProj = MatrixMultiply(view, proj); - matViewProj = MatrixInvert(matViewProj); - - // Create quaternion from source point - Quaternion quat = { source.x, source.y, source.z, 1.0f }; - - // Multiply quat point by unproject matrix - quat = QuaternionTransform(quat, matViewProj); - - // Normalized world points in vectors - result.x = quat.x/quat.w; - result.y = quat.y/quat.w; - result.z = quat.z/quat.w; - - return result; -} - -// Convert image data to OpenGL texture (returns OpenGL valid Id) -unsigned int rlLoadTexture(void *data, int width, int height, int format, int mipmapCount) -{ - glBindTexture(GL_TEXTURE_2D, 0); // Free any old binding - - GLuint id = 0; - - // Check texture format support by OpenGL 1.1 (compressed textures not supported) -#if defined(GRAPHICS_API_OPENGL_11) - if (format >= COMPRESSED_DXT1_RGB) - { - TraceLog(LOG_WARNING, "OpenGL 1.1 does not support GPU compressed texture formats"); - return id; - } -#endif - - if ((!texCompDXTSupported) && ((format == COMPRESSED_DXT1_RGB) || (format == COMPRESSED_DXT1_RGBA) || - (format == COMPRESSED_DXT3_RGBA) || (format == COMPRESSED_DXT5_RGBA))) - { - TraceLog(LOG_WARNING, "DXT compressed texture format not supported"); - return id; - } -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if ((!texCompETC1Supported) && (format == COMPRESSED_ETC1_RGB)) - { - TraceLog(LOG_WARNING, "ETC1 compressed texture format not supported"); - return id; - } - - if ((!texCompETC2Supported) && ((format == COMPRESSED_ETC2_RGB) || (format == COMPRESSED_ETC2_EAC_RGBA))) - { - TraceLog(LOG_WARNING, "ETC2 compressed texture format not supported"); - return id; - } - - if ((!texCompPVRTSupported) && ((format == COMPRESSED_PVRT_RGB) || (format == COMPRESSED_PVRT_RGBA))) - { - TraceLog(LOG_WARNING, "PVRT compressed texture format not supported"); - return id; - } - - if ((!texCompASTCSupported) && ((format == COMPRESSED_ASTC_4x4_RGBA) || (format == COMPRESSED_ASTC_8x8_RGBA))) - { - TraceLog(LOG_WARNING, "ASTC compressed texture format not supported"); - return id; - } -#endif - - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - - glGenTextures(1, &id); // Generate Pointer to the texture - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - //glActiveTexture(GL_TEXTURE0); // If not defined, using GL_TEXTURE0 by default (shader texture) -#endif - - glBindTexture(GL_TEXTURE_2D, id); - - int mipWidth = width; - int mipHeight = height; - int mipOffset = 0; // Mipmap data offset - - TraceLog(LOG_DEBUG, "Load texture from data memory address: 0x%x", data); - - // Load the different mipmap levels - for (int i = 0; i < mipmapCount; i++) - { - unsigned int mipSize = GetPixelDataSize(mipWidth, mipHeight, format); - - int glInternalFormat, glFormat, glType; - GetGlFormats(format, &glInternalFormat, &glFormat, &glType); - - TraceLog(LOG_DEBUG, "Load mipmap level %i (%i x %i), size: %i, offset: %i", i, mipWidth, mipHeight, mipSize, mipOffset); - - if (glInternalFormat != -1) - { - if (format < COMPRESSED_DXT1_RGB) glTexImage2D(GL_TEXTURE_2D, i, glInternalFormat, mipWidth, mipHeight, 0, glFormat, glType, (unsigned char *)data + mipOffset); - #if !defined(GRAPHICS_API_OPENGL_11) - else glCompressedTexImage2D(GL_TEXTURE_2D, i, glInternalFormat, mipWidth, mipHeight, 0, mipSize, (unsigned char *)data + mipOffset); - #endif - - #if defined(GRAPHICS_API_OPENGL_33) - if (format == UNCOMPRESSED_GRAYSCALE) - { - GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_ONE }; - glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask); - } - else if (format == UNCOMPRESSED_GRAY_ALPHA) - { - #if defined(GRAPHICS_API_OPENGL_21) - GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_ALPHA }; - #elif defined(GRAPHICS_API_OPENGL_33) - GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_GREEN }; - #endif - glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask); - } - #endif - } - - mipWidth /= 2; - mipHeight /= 2; - mipOffset += mipSize; - - // Security check for NPOT textures - if (mipWidth < 1) mipWidth = 1; - if (mipHeight < 1) mipHeight = 1; - } - - // Texture parameters configuration - // NOTE: glTexParameteri does NOT affect texture uploading, just the way it's used -#if defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: OpenGL ES 2.0 with no GL_OES_texture_npot support (i.e. WebGL) has limited NPOT support, so CLAMP_TO_EDGE must be used - if (texNPOTSupported) - { - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); // Set texture to repeat on x-axis - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); // Set texture to repeat on y-axis - } - else - { - // NOTE: If using negative texture coordinates (LoadOBJ()), it does not work! - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); // Set texture to clamp on x-axis - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); // Set texture to clamp on y-axis - } -#else - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); // Set texture to repeat on x-axis - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); // Set texture to repeat on y-axis -#endif - - // Magnification and minification filters - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); // Alternative: GL_LINEAR - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); // Alternative: GL_LINEAR - -#if defined(GRAPHICS_API_OPENGL_33) - if (mipmapCount > 1) - { - // Activate Trilinear filtering if mipmaps are available - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); - } -#endif - - // At this point we have the texture loaded in GPU and texture parameters configured - - // NOTE: If mipmaps were not in data, they are not generated automatically - - // Unbind current texture - glBindTexture(GL_TEXTURE_2D, 0); - - if (id > 0) TraceLog(LOG_INFO, "[TEX ID %i] Texture created successfully (%ix%i - %i mipmaps)", id, width, height, mipmapCount); - else TraceLog(LOG_WARNING, "Texture could not be created"); - - return id; -} - -// Update already loaded texture in GPU with new data -void rlUpdateTexture(unsigned int id, int width, int height, int format, const void *data) -{ - glBindTexture(GL_TEXTURE_2D, id); - - int glInternalFormat, glFormat, glType; - GetGlFormats(format, &glInternalFormat, &glFormat, &glType); - - if ((glInternalFormat != -1) && (format < COMPRESSED_DXT1_RGB)) - { - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, glFormat, glType, (unsigned char *)data); - } - else TraceLog(LOG_WARNING, "Texture format updating not supported"); -} - -// Unload texture from GPU memory -void rlUnloadTexture(unsigned int id) -{ - if (id > 0) glDeleteTextures(1, &id); -} - - -// Load a texture to be used for rendering (fbo with color and depth attachments) -RenderTexture2D rlLoadRenderTexture(int width, int height) -{ - RenderTexture2D target; - - target.id = 0; - - target.texture.id = 0; - target.texture.width = width; - target.texture.height = height; - target.texture.format = UNCOMPRESSED_R8G8B8A8; - target.texture.mipmaps = 1; - - target.depth.id = 0; - target.depth.width = width; - target.depth.height = height; - target.depth.format = 19; //DEPTH_COMPONENT_24BIT - target.depth.mipmaps = 1; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Create the texture that will serve as the color attachment for the framebuffer - glGenTextures(1, &target.texture.id); - glBindTexture(GL_TEXTURE_2D, target.texture.id); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); - glBindTexture(GL_TEXTURE_2D, 0); - -#if defined(GRAPHICS_API_OPENGL_21) || defined(GRAPHICS_API_OPENGL_ES2) - #define USE_DEPTH_RENDERBUFFER -#else - #define USE_DEPTH_TEXTURE -#endif - -#if defined(USE_DEPTH_RENDERBUFFER) - // Create the renderbuffer that will serve as the depth attachment for the framebuffer. - glGenRenderbuffers(1, &target.depth.id); - glBindRenderbuffer(GL_RENDERBUFFER, target.depth.id); - glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height); // GL_DEPTH_COMPONENT24 not supported on Android -#elif defined(USE_DEPTH_TEXTURE) - // NOTE: We can also use a texture for depth buffer (GL_ARB_depth_texture/GL_OES_depth_texture extension required) - // A renderbuffer is simpler than a texture and could offer better performance on embedded devices - glGenTextures(1, &target.depth.id); - glBindTexture(GL_TEXTURE_2D, target.depth.id); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT24, width, height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL); - glBindTexture(GL_TEXTURE_2D, 0); -#endif - - // Create the framebuffer object - glGenFramebuffers(1, &target.id); - glBindFramebuffer(GL_FRAMEBUFFER, target.id); - - // Attach color texture and depth renderbuffer to FBO - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, target.texture.id, 0); -#if defined(USE_DEPTH_RENDERBUFFER) - glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, target.depth.id); -#elif defined(USE_DEPTH_TEXTURE) - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, target.depth.id, 0); -#endif - - GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); - - if (status != GL_FRAMEBUFFER_COMPLETE) - { - TraceLog(LOG_WARNING, "Framebuffer object could not be created..."); - - switch (status) - { - case GL_FRAMEBUFFER_UNSUPPORTED: TraceLog(LOG_WARNING, "Framebuffer is unsupported"); break; - case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: TraceLog(LOG_WARNING, "Framebuffer incomplete attachment"); break; -#if defined(GRAPHICS_API_OPENGL_ES2) - case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS: TraceLog(LOG_WARNING, "Framebuffer incomplete dimensions"); break; -#endif - case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: TraceLog(LOG_WARNING, "Framebuffer incomplete missing attachment"); break; - default: break; - } - - glDeleteTextures(1, &target.texture.id); - glDeleteTextures(1, &target.depth.id); - glDeleteFramebuffers(1, &target.id); - } - else TraceLog(LOG_INFO, "[FBO ID %i] Framebuffer object created successfully", target.id); - - glBindFramebuffer(GL_FRAMEBUFFER, 0); -#endif - - return target; -} - -// Generate mipmap data for selected texture -void rlGenerateMipmaps(Texture2D *texture) -{ - glBindTexture(GL_TEXTURE_2D, texture->id); - - // Check if texture is power-of-two (POT) - bool texIsPOT = false; - - if (((texture->width > 0) && ((texture->width & (texture->width - 1)) == 0)) && - ((texture->height > 0) && ((texture->height & (texture->height - 1)) == 0))) texIsPOT = true; - - if ((texIsPOT) || (texNPOTSupported)) - { -#if defined(GRAPHICS_API_OPENGL_11) - // WARNING: Manual mipmap generation only works for RGBA 32bit textures! - if (texture->format == UNCOMPRESSED_R8G8B8A8) - { - // Retrieve texture data from VRAM - void *data = rlReadTexturePixels(*texture); - - // NOTE: data size is reallocated to fit mipmaps data - // NOTE: CPU mipmap generation only supports RGBA 32bit data - int mipmapCount = GenerateMipmaps(data, texture->width, texture->height); - - int size = texture->width*texture->height*4; - int offset = size; - - int mipWidth = texture->width/2; - int mipHeight = texture->height/2; - - // Load the mipmaps - for (int level = 1; level < mipmapCount; level++) - { - glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA8, mipWidth, mipHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, (unsigned char *)data + offset); - - size = mipWidth*mipHeight*4; - offset += size; - - mipWidth /= 2; - mipHeight /= 2; - } - - texture->mipmaps = mipmapCount + 1; - free(data); // Once mipmaps have been generated and data has been uploaded to GPU VRAM, we can discard RAM data - - TraceLog(LOG_WARNING, "[TEX ID %i] Mipmaps [%i] generated manually on CPU side", texture->id, texture->mipmaps); - } - else TraceLog(LOG_WARNING, "[TEX ID %i] Mipmaps could not be generated for texture format", texture->id); -#endif - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - //glHint(GL_GENERATE_MIPMAP_HINT, GL_DONT_CARE); // Hint for mipmaps generation algorythm: GL_FASTEST, GL_NICEST, GL_DONT_CARE - glGenerateMipmap(GL_TEXTURE_2D); // Generate mipmaps automatically - TraceLog(LOG_INFO, "[TEX ID %i] Mipmaps generated automatically", texture->id); - - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); // Activate Trilinear filtering for mipmaps - - #define MIN(a,b) (((a)<(b))?(a):(b)) - #define MAX(a,b) (((a)>(b))?(a):(b)) - - texture->mipmaps = 1 + (int)floor(log(MAX(texture->width, texture->height))/log(2)); -#endif - } - else TraceLog(LOG_WARNING, "[TEX ID %i] Mipmaps can not be generated", texture->id); - - glBindTexture(GL_TEXTURE_2D, 0); -} - -// Upload vertex data into a VAO (if supported) and VBO -// TODO: Check if mesh has already been loaded in GPU -void rlLoadMesh(Mesh *mesh, bool dynamic) -{ - mesh->vaoId = 0; // Vertex Array Object - mesh->vboId[0] = 0; // Vertex positions VBO - mesh->vboId[1] = 0; // Vertex texcoords VBO - mesh->vboId[2] = 0; // Vertex normals VBO - mesh->vboId[3] = 0; // Vertex colors VBO - mesh->vboId[4] = 0; // Vertex tangents VBO - mesh->vboId[5] = 0; // Vertex texcoords2 VBO - mesh->vboId[6] = 0; // Vertex indices VBO - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - int drawHint = GL_STATIC_DRAW; - if (dynamic) drawHint = GL_DYNAMIC_DRAW; - - if (vaoSupported) - { - // Initialize Quads VAO (Buffer A) - glGenVertexArrays(1, &mesh->vaoId); - glBindVertexArray(mesh->vaoId); - } - - // NOTE: Attributes must be uploaded considering default locations points - - // Enable vertex attributes: position (shader-location = 0) - glGenBuffers(1, &mesh->vboId[0]); - glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[0]); - glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*mesh->vertexCount, mesh->vertices, drawHint); - glVertexAttribPointer(0, 3, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(0); - - // Enable vertex attributes: texcoords (shader-location = 1) - glGenBuffers(1, &mesh->vboId[1]); - glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[1]); - glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*mesh->vertexCount, mesh->texcoords, drawHint); - glVertexAttribPointer(1, 2, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(1); - - // Enable vertex attributes: normals (shader-location = 2) - if (mesh->normals != NULL) - { - glGenBuffers(1, &mesh->vboId[2]); - glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[2]); - glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*mesh->vertexCount, mesh->normals, drawHint); - glVertexAttribPointer(2, 3, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(2); - } - else - { - // Default color vertex attribute set to WHITE - glVertexAttrib3f(2, 1.0f, 1.0f, 1.0f); - glDisableVertexAttribArray(2); - } - - // Default color vertex attribute (shader-location = 3) - if (mesh->colors != NULL) - { - glGenBuffers(1, &mesh->vboId[3]); - glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[3]); - glBufferData(GL_ARRAY_BUFFER, sizeof(unsigned char)*4*mesh->vertexCount, mesh->colors, drawHint); - glVertexAttribPointer(3, 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); - glEnableVertexAttribArray(3); - } - else - { - // Default color vertex attribute set to WHITE - glVertexAttrib4f(3, 1.0f, 1.0f, 1.0f, 1.0f); - glDisableVertexAttribArray(3); - } - - // Default tangent vertex attribute (shader-location = 4) - if (mesh->tangents != NULL) - { - glGenBuffers(1, &mesh->vboId[4]); - glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[4]); - glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*mesh->vertexCount, mesh->tangents, drawHint); - glVertexAttribPointer(4, 4, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(4); - } - else - { - // Default tangents vertex attribute - glVertexAttrib4f(4, 0.0f, 0.0f, 0.0f, 0.0f); - glDisableVertexAttribArray(4); - } - - // Default texcoord2 vertex attribute (shader-location = 5) - if (mesh->texcoords2 != NULL) - { - glGenBuffers(1, &mesh->vboId[5]); - glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[5]); - glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*mesh->vertexCount, mesh->texcoords2, drawHint); - glVertexAttribPointer(5, 2, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(5); - } - else - { - // Default texcoord2 vertex attribute - glVertexAttrib2f(5, 0.0f, 0.0f); - glDisableVertexAttribArray(5); - } - - if (mesh->indices != NULL) - { - glGenBuffers(1, &mesh->vboId[6]); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mesh->vboId[6]); - glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(unsigned short)*mesh->triangleCount*3, mesh->indices, GL_STATIC_DRAW); - } - - if (vaoSupported) - { - if (mesh->vaoId > 0) TraceLog(LOG_INFO, "[VAO ID %i] Mesh uploaded successfully to VRAM (GPU)", mesh->vaoId); - else TraceLog(LOG_WARNING, "Mesh could not be uploaded to VRAM (GPU)"); - } - else - { - TraceLog(LOG_INFO, "[VBOs] Mesh uploaded successfully to VRAM (GPU)"); - } -#endif -} - -// Update vertex data on GPU (upload new data to one buffer) -void rlUpdateMesh(Mesh mesh, int buffer, int numVertex) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Activate mesh VAO - if (vaoSupported) glBindVertexArray(mesh.vaoId); - - switch (buffer) - { - case 0: // Update vertices (vertex position) - { - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[0]); - if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*numVertex, mesh.vertices, GL_DYNAMIC_DRAW); - else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*3*numVertex, mesh.vertices); - - } break; - case 1: // Update texcoords (vertex texture coordinates) - { - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[1]); - if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*numVertex, mesh.texcoords, GL_DYNAMIC_DRAW); - else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*2*numVertex, mesh.texcoords); - - } break; - case 2: // Update normals (vertex normals) - { - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[2]); - if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*numVertex, mesh.normals, GL_DYNAMIC_DRAW); - else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*3*numVertex, mesh.normals); - - } break; - case 3: // Update colors (vertex colors) - { - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[3]); - if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*numVertex, mesh.colors, GL_DYNAMIC_DRAW); - else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(unsigned char)*4*numVertex, mesh.colors); - - } break; - case 4: // Update tangents (vertex tangents) - { - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[4]); - if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*numVertex, mesh.tangents, GL_DYNAMIC_DRAW); - else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*4*numVertex, mesh.tangents); - } break; - case 5: // Update texcoords2 (vertex second texture coordinates) - { - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[5]); - if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*numVertex, mesh.texcoords2, GL_DYNAMIC_DRAW); - else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*2*numVertex, mesh.texcoords2); - } break; - default: break; - } - - // Unbind the current VAO - if (vaoSupported) glBindVertexArray(0); - - // Another option would be using buffer mapping... - //mesh.vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_READ_WRITE); - // Now we can modify vertices - //glUnmapBuffer(GL_ARRAY_BUFFER); -#endif -} - -// Draw a 3d mesh with material and transform -void rlDrawMesh(Mesh mesh, Material material, Matrix transform) -{ -#if defined(GRAPHICS_API_OPENGL_11) - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, material.maps[MAP_DIFFUSE].texture.id); - - // NOTE: On OpenGL 1.1 we use Vertex Arrays to draw model - glEnableClientState(GL_VERTEX_ARRAY); // Enable vertex array - glEnableClientState(GL_TEXTURE_COORD_ARRAY); // Enable texture coords array - if (mesh.normals != NULL) glEnableClientState(GL_NORMAL_ARRAY); // Enable normals array - if (mesh.colors != NULL) glEnableClientState(GL_COLOR_ARRAY); // Enable colors array - - glVertexPointer(3, GL_FLOAT, 0, mesh.vertices); // Pointer to vertex coords array - glTexCoordPointer(2, GL_FLOAT, 0, mesh.texcoords); // Pointer to texture coords array - if (mesh.normals != NULL) glNormalPointer(GL_FLOAT, 0, mesh.normals); // Pointer to normals array - if (mesh.colors != NULL) glColorPointer(4, GL_UNSIGNED_BYTE, 0, mesh.colors); // Pointer to colors array - - rlPushMatrix(); - rlMultMatrixf(MatrixToFloat(transform)); - rlColor4ub(material.maps[MAP_DIFFUSE].color.r, material.maps[MAP_DIFFUSE].color.g, material.maps[MAP_DIFFUSE].color.b, material.maps[MAP_DIFFUSE].color.a); - - if (mesh.indices != NULL) glDrawElements(GL_TRIANGLES, mesh.triangleCount*3, GL_UNSIGNED_SHORT, mesh.indices); - else glDrawArrays(GL_TRIANGLES, 0, mesh.vertexCount); - rlPopMatrix(); - - glDisableClientState(GL_VERTEX_ARRAY); // Disable vertex array - glDisableClientState(GL_TEXTURE_COORD_ARRAY); // Disable texture coords array - if (mesh.normals != NULL) glDisableClientState(GL_NORMAL_ARRAY); // Disable normals array - if (mesh.colors != NULL) glDisableClientState(GL_NORMAL_ARRAY); // Disable colors array - - glDisable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, 0); -#endif - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Bind shader program - glUseProgram(material.shader.id); - - // Matrices and other values required by shader - //----------------------------------------------------- - // Calculate and send to shader model matrix (used by PBR shader) - if (material.shader.locs[LOC_MATRIX_MODEL] != -1) SetShaderValueMatrix(material.shader, material.shader.locs[LOC_MATRIX_MODEL], transform); - - // Upload to shader material.colDiffuse - if (material.shader.locs[LOC_COLOR_DIFFUSE] != -1) - glUniform4f(material.shader.locs[LOC_COLOR_DIFFUSE], (float)material.maps[MAP_DIFFUSE].color.r/255.0f, - (float)material.maps[MAP_DIFFUSE].color.g/255.0f, - (float)material.maps[MAP_DIFFUSE].color.b/255.0f, - (float)material.maps[MAP_DIFFUSE].color.a/255.0f); - - // Upload to shader material.colSpecular (if available) - if (material.shader.locs[LOC_COLOR_SPECULAR] != -1) - glUniform4f(material.shader.locs[LOC_COLOR_SPECULAR], (float)material.maps[MAP_SPECULAR].color.r/255.0f, - (float)material.maps[MAP_SPECULAR].color.g/255.0f, - (float)material.maps[MAP_SPECULAR].color.b/255.0f, - (float)material.maps[MAP_SPECULAR].color.a/255.0f); - - if (material.shader.locs[LOC_MATRIX_VIEW] != -1) SetShaderValueMatrix(material.shader, material.shader.locs[LOC_MATRIX_VIEW], modelview); - if (material.shader.locs[LOC_MATRIX_PROJECTION] != -1) SetShaderValueMatrix(material.shader, material.shader.locs[LOC_MATRIX_PROJECTION], projection); - - // At this point the modelview matrix just contains the view matrix (camera) - // That's because BeginMode3D() sets it an no model-drawing function modifies it, all use rlPushMatrix() and rlPopMatrix() - Matrix matView = modelview; // View matrix (camera) - Matrix matProjection = projection; // Projection matrix (perspective) - - // Calculate model-view matrix combining matModel and matView - Matrix matModelView = MatrixMultiply(transform, matView); // Transform to camera-space coordinates - //----------------------------------------------------- - - // Bind active texture maps (if available) - for (int i = 0; i < MAX_MATERIAL_MAPS; i++) - { - if (material.maps[i].texture.id > 0) - { - glActiveTexture(GL_TEXTURE0 + i); - if ((i == MAP_IRRADIANCE) || (i == MAP_PREFILTER) || (i == MAP_CUBEMAP)) glBindTexture(GL_TEXTURE_CUBE_MAP, material.maps[i].texture.id); - else glBindTexture(GL_TEXTURE_2D, material.maps[i].texture.id); - - glUniform1i(material.shader.locs[LOC_MAP_DIFFUSE + i], i); - } - } - - // Bind vertex array objects (or VBOs) - if (vaoSupported) glBindVertexArray(mesh.vaoId); - else - { - // TODO: Simplify VBO binding into a for loop - - // Bind mesh VBO data: vertex position (shader-location = 0) - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[0]); - glVertexAttribPointer(material.shader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_POSITION]); - - // Bind mesh VBO data: vertex texcoords (shader-location = 1) - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[1]); - glVertexAttribPointer(material.shader.locs[LOC_VERTEX_TEXCOORD01], 2, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_TEXCOORD01]); - - // Bind mesh VBO data: vertex normals (shader-location = 2, if available) - if (material.shader.locs[LOC_VERTEX_NORMAL] != -1) - { - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[2]); - glVertexAttribPointer(material.shader.locs[LOC_VERTEX_NORMAL], 3, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_NORMAL]); - } - - // Bind mesh VBO data: vertex colors (shader-location = 3, if available) - if (material.shader.locs[LOC_VERTEX_COLOR] != -1) - { - if (mesh.vboId[3] != 0) - { - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[3]); - glVertexAttribPointer(material.shader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); - glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_COLOR]); - } - else - { - // Set default value for unused attribute - // NOTE: Required when using default shader and no VAO support - glVertexAttrib4f(material.shader.locs[LOC_VERTEX_COLOR], 1.0f, 1.0f, 1.0f, 1.0f); - glDisableVertexAttribArray(material.shader.locs[LOC_VERTEX_COLOR]); - } - } - - // Bind mesh VBO data: vertex tangents (shader-location = 4, if available) - if (material.shader.locs[LOC_VERTEX_TANGENT] != -1) - { - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[4]); - glVertexAttribPointer(material.shader.locs[LOC_VERTEX_TANGENT], 4, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_TANGENT]); - } - - // Bind mesh VBO data: vertex texcoords2 (shader-location = 5, if available) - if (material.shader.locs[LOC_VERTEX_TEXCOORD02] != -1) - { - glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[5]); - glVertexAttribPointer(material.shader.locs[LOC_VERTEX_TEXCOORD02], 2, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_TEXCOORD02]); - } - - if (mesh.indices != NULL) glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mesh.vboId[6]); - } - - int eyesCount = 1; -#if defined(SUPPORT_VR_SIMULATOR) - if (vrStereoRender) eyesCount = 2; -#endif - - for (int eye = 0; eye < eyesCount; eye++) - { - if (eyesCount == 1) modelview = matModelView; - #if defined(SUPPORT_VR_SIMULATOR) - else SetStereoView(eye, matProjection, matModelView); - #endif - - // Calculate model-view-projection matrix (MVP) - Matrix matMVP = MatrixMultiply(modelview, projection); // Transform to screen-space coordinates - - // Send combined model-view-projection matrix to shader - glUniformMatrix4fv(material.shader.locs[LOC_MATRIX_MVP], 1, false, MatrixToFloat(matMVP)); - - // Draw call! - if (mesh.indices != NULL) glDrawElements(GL_TRIANGLES, mesh.triangleCount*3, GL_UNSIGNED_SHORT, 0); // Indexed vertices draw - else glDrawArrays(GL_TRIANGLES, 0, mesh.vertexCount); - } - - // Unbind all binded texture maps - for (int i = 0; i < MAX_MATERIAL_MAPS; i++) - { - glActiveTexture(GL_TEXTURE0 + i); // Set shader active texture - if ((i == MAP_IRRADIANCE) || (i == MAP_PREFILTER) || (i == MAP_CUBEMAP)) glBindTexture(GL_TEXTURE_CUBE_MAP, 0); - else glBindTexture(GL_TEXTURE_2D, 0); // Unbind current active texture - } - - // Unind vertex array objects (or VBOs) - if (vaoSupported) glBindVertexArray(0); - else - { - glBindBuffer(GL_ARRAY_BUFFER, 0); - if (mesh.indices != NULL) glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); - } - - // Unbind shader program - glUseProgram(0); - - // Restore projection/modelview matrices - // NOTE: In stereo rendering matrices are being modified to fit every eye - projection = matProjection; - modelview = matView; -#endif -} - -// Unload mesh data from CPU and GPU -void rlUnloadMesh(Mesh *mesh) -{ - if (mesh->vertices != NULL) free(mesh->vertices); - if (mesh->texcoords != NULL) free(mesh->texcoords); - if (mesh->normals != NULL) free(mesh->normals); - if (mesh->colors != NULL) free(mesh->colors); - if (mesh->tangents != NULL) free(mesh->tangents); - if (mesh->texcoords2 != NULL) free(mesh->texcoords2); - if (mesh->indices != NULL) free(mesh->indices); - - rlDeleteBuffers(mesh->vboId[0]); // vertex - rlDeleteBuffers(mesh->vboId[1]); // texcoords - rlDeleteBuffers(mesh->vboId[2]); // normals - rlDeleteBuffers(mesh->vboId[3]); // colors - rlDeleteBuffers(mesh->vboId[4]); // tangents - rlDeleteBuffers(mesh->vboId[5]); // texcoords2 - rlDeleteBuffers(mesh->vboId[6]); // indices - - rlDeleteVertexArrays(mesh->vaoId); -} - -// Read screen pixel data (color buffer) -unsigned char *rlReadScreenPixels(int width, int height) -{ - unsigned char *screenData = (unsigned char *)calloc(width*height*4, sizeof(unsigned char)); - - // NOTE: glReadPixels returns image flipped vertically -> (0,0) is the bottom left corner of the framebuffer - glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, screenData); - - // Flip image vertically! - unsigned char *imgData = (unsigned char *)malloc(width*height*sizeof(unsigned char)*4); - - for (int y = height - 1; y >= 0; y--) - { - for (int x = 0; x < (width*4); x++) - { - // Flip line - imgData[((height - 1) - y)*width*4 + x] = screenData[(y*width*4) + x]; - - // Set alpha component value to 255 (no trasparent image retrieval) - // NOTE: Alpha value has already been applied to RGB in framebuffer, we don't need it! - if (((x + 1)%4) == 0) imgData[((height - 1) - y)*width*4 + x] = 255; - } - } - - free(screenData); - - return imgData; // NOTE: image data should be freed -} - -// Read texture pixel data -// NOTE: glGetTexImage() is not available on OpenGL ES 2.0 -// Texture2D width and height are required on OpenGL ES 2.0. There is no way to get it from texture id. -void *rlReadTexturePixels(Texture2D texture) -{ - void *pixels = NULL; - -#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) - glBindTexture(GL_TEXTURE_2D, texture.id); - - // NOTE: Using texture.id, we can retrieve some texture info (but not on OpenGL ES 2.0) - /* - int width, height, format; - glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width); - glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &height); - glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, &format); - // Other texture info: GL_TEXTURE_RED_SIZE, GL_TEXTURE_GREEN_SIZE, GL_TEXTURE_BLUE_SIZE, GL_TEXTURE_ALPHA_SIZE - */ - - // NOTE: Each row written to or read from by OpenGL pixel operations like glGetTexImage are aligned to a 4 byte boundary by default, which may add some padding. - // Use glPixelStorei to modify padding with the GL_[UN]PACK_ALIGNMENT setting. - // GL_PACK_ALIGNMENT affects operations that read from OpenGL memory (glReadPixels, glGetTexImage, etc.) - // GL_UNPACK_ALIGNMENT affects operations that write to OpenGL memory (glTexImage, etc.) - glPixelStorei(GL_PACK_ALIGNMENT, 1); - - int glInternalFormat, glFormat, glType; - GetGlFormats(texture.format, &glInternalFormat, &glFormat, &glType); - unsigned int size = GetPixelDataSize(texture.width, texture.height, texture.format); - - if ((glInternalFormat != -1) && (texture.format < COMPRESSED_DXT1_RGB)) - { - pixels = (unsigned char *)malloc(size); - glGetTexImage(GL_TEXTURE_2D, 0, glFormat, glType, pixels); - } - else TraceLog(LOG_WARNING, "Texture data retrieval not suported for pixel format"); - - glBindTexture(GL_TEXTURE_2D, 0); -#endif - -#if defined(GRAPHICS_API_OPENGL_ES2) - RenderTexture2D fbo = rlLoadRenderTexture(texture.width, texture.height); - - // NOTE: Two possible Options: - // 1 - Bind texture to color fbo attachment and glReadPixels() - // 2 - Create an fbo, activate it, render quad with texture, glReadPixels() - -#define GET_TEXTURE_FBO_OPTION_1 // It works -#if defined(GET_TEXTURE_FBO_OPTION_1) - glBindFramebuffer(GL_FRAMEBUFFER, fbo.id); - glBindTexture(GL_TEXTURE_2D, 0); - - // Attach our texture to FBO -> Texture must be RGBA - // NOTE: Previoust attached texture is automatically detached - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.id, 0); - - pixels = (unsigned char *)malloc(texture.width*texture.height*4*sizeof(unsigned char)); - - // NOTE: We read data as RGBA because FBO texture is configured as RGBA, despite binding a RGB texture... - glReadPixels(0, 0, texture.width, texture.height, GL_RGBA, GL_UNSIGNED_BYTE, pixels); - - // Re-attach internal FBO color texture before deleting it - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fbo.texture.id, 0); - - glBindFramebuffer(GL_FRAMEBUFFER, 0); - -#elif defined(GET_TEXTURE_FBO_OPTION_2) - // Render texture to fbo - glBindFramebuffer(GL_FRAMEBUFFER, fbo.id); - - glClearColor(0.0f, 0.0f, 0.0f, 0.0f); - glClearDepthf(1.0f); - //glDisable(GL_TEXTURE_2D); - glEnable(GL_DEPTH_TEST); - //glDisable(GL_BLEND); - - glViewport(0, 0, texture.width, texture.height); - rlOrtho(0.0, texture.width, texture.height, 0.0, 0.0, 1.0); - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - glUseProgram(GetShaderDefault().id); - glBindTexture(GL_TEXTURE_2D, texture.id); - GenDrawQuad(); - glBindTexture(GL_TEXTURE_2D, 0); - glUseProgram(0); - - pixels = (unsigned char *)malloc(texture.width*texture.height*4*sizeof(unsigned char)); - - glReadPixels(0, 0, texture.width, texture.height, GL_RGBA, GL_UNSIGNED_BYTE, pixels); - - // Bind framebuffer 0, which means render to back buffer - glBindFramebuffer(GL_FRAMEBUFFER, 0); - - // Reset viewport dimensions to default - glViewport(0, 0, screenWidth, screenHeight); - -#endif // GET_TEXTURE_FBO_OPTION - - // Clean up temporal fbo - rlDeleteRenderTextures(fbo); - -#endif - - return pixels; -} - -/* -// TODO: Record draw calls to be processed in batch -// NOTE: Global state must be kept -void rlRecordDraw(void) -{ - // TODO: Before adding a new draw, check if anything changed from last stored draw -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - draws[drawsCounter].vaoId = currentState.vaoId; // lines.id, trangles.id, quads.id? - draws[drawsCounter].textureId = currentState.textureId; // whiteTexture? - draws[drawsCounter].shaderId = currentState.shaderId; // defaultShader.id - draws[drawsCounter].projection = projection; - draws[drawsCounter].modelview = modelview; - draws[drawsCounter].vertexCount = currentState.vertexCount; - - drawsCounter++; -#endif -} -*/ - -//---------------------------------------------------------------------------------- -// Module Functions Definition - Shaders Functions -// NOTE: Those functions are exposed directly to the user in raylib.h -//---------------------------------------------------------------------------------- - -// Get default internal texture (white texture) -Texture2D GetTextureDefault(void) -{ - Texture2D texture; - - texture.id = whiteTexture; - texture.width = 1; - texture.height = 1; - texture.mipmaps = 1; - texture.format = UNCOMPRESSED_R8G8B8A8; - - return texture; -} - -// Get default shader -Shader GetShaderDefault(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - return defaultShader; -#else - Shader shader = { 0 }; - return shader; -#endif -} - -// Load text data from file -// NOTE: text chars array should be freed manually -char *LoadText(const char *fileName) -{ - FILE *textFile; - char *text = NULL; - - int count = 0; - - if (fileName != NULL) - { - textFile = fopen(fileName,"rt"); - - if (textFile != NULL) - { - fseek(textFile, 0, SEEK_END); - count = ftell(textFile); - rewind(textFile); - - if (count > 0) - { - text = (char *)malloc(sizeof(char)*(count + 1)); - count = fread(text, sizeof(char), count, textFile); - text[count] = '\0'; - } - - fclose(textFile); - } - else TraceLog(LOG_WARNING, "[%s] Text file could not be opened", fileName); - } - - return text; -} - -// Load shader from files and bind default locations -// NOTE: If shader string is NULL, using default vertex/fragment shaders -Shader LoadShader(const char *vsFileName, const char *fsFileName) -{ - Shader shader = { 0 }; - - char *vShaderStr = NULL; - char *fShaderStr = NULL; - - if (vsFileName != NULL) vShaderStr = LoadText(vsFileName); - if (fsFileName != NULL) fShaderStr = LoadText(fsFileName); - - shader = LoadShaderCode(vShaderStr, fShaderStr); - - if (vShaderStr != NULL) free(vShaderStr); - if (fShaderStr != NULL) free(fShaderStr); - - return shader; -} - -// Load shader from code strings -// NOTE: If shader string is NULL, using default vertex/fragment shaders -Shader LoadShaderCode(char *vsCode, char *fsCode) -{ - Shader shader = { 0 }; - - // NOTE: All locations must be reseted to -1 (no location) - for (int i = 0; i < MAX_SHADER_LOCATIONS; i++) shader.locs[i] = -1; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - unsigned int vertexShaderId = defaultVShaderId; - unsigned int fragmentShaderId = defaultFShaderId; - - if (vsCode != NULL) vertexShaderId = CompileShader(vsCode, GL_VERTEX_SHADER); - if (fsCode != NULL) fragmentShaderId = CompileShader(fsCode, GL_FRAGMENT_SHADER); - - if ((vertexShaderId == defaultVShaderId) && (fragmentShaderId == defaultFShaderId)) shader = defaultShader; - else - { - shader.id = LoadShaderProgram(vertexShaderId, fragmentShaderId); - - if (vertexShaderId != defaultVShaderId) glDeleteShader(vertexShaderId); - if (fragmentShaderId != defaultFShaderId) glDeleteShader(fragmentShaderId); - - if (shader.id == 0) - { - TraceLog(LOG_WARNING, "Custom shader could not be loaded"); - shader = defaultShader; - } - - // After shader loading, we TRY to set default location names - if (shader.id > 0) SetShaderDefaultLocations(&shader); - } - - // Get available shader uniforms - // NOTE: This information is useful for debug... - int uniformCount = -1; - - glGetProgramiv(shader.id, GL_ACTIVE_UNIFORMS, &uniformCount); - - for(int i = 0; i < uniformCount; i++) - { - int namelen = -1; - int num = -1; - char name[256]; // Assume no variable names longer than 256 - GLenum type = GL_ZERO; - - // Get the name of the uniforms - glGetActiveUniform(shader.id, i,sizeof(name) - 1, &namelen, &num, &type, name); - - name[namelen] = 0; - - // Get the location of the named uniform - GLuint location = glGetUniformLocation(shader.id, name); - - TraceLog(LOG_DEBUG, "[SHDR ID %i] Active uniform [%s] set at location: %i", shader.id, name, location); - } -#endif - - return shader; -} - -// Unload shader from GPU memory (VRAM) -void UnloadShader(Shader shader) -{ - if (shader.id > 0) - { - rlDeleteShader(shader.id); - TraceLog(LOG_INFO, "[SHDR ID %i] Unloaded shader program data", shader.id); - } -} - -// Begin custom shader mode -void BeginShaderMode(Shader shader) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (currentShader.id != shader.id) - { - rlglDraw(); - currentShader = shader; - } -#endif -} - -// End custom shader mode (returns to default shader) -void EndShaderMode(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - BeginShaderMode(defaultShader); -#endif -} - -// Get shader uniform location -int GetShaderLocation(Shader shader, const char *uniformName) -{ - int location = -1; -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - location = glGetUniformLocation(shader.id, uniformName); - - if (location == -1) TraceLog(LOG_WARNING, "[SHDR ID %i] Shader uniform [%s] COULD NOT BE FOUND", shader.id, uniformName); - else TraceLog(LOG_INFO, "[SHDR ID %i] Shader uniform [%s] set at location: %i", shader.id, uniformName, location); -#endif - return location; -} - -// Set shader uniform value (float) -void SetShaderValue(Shader shader, int uniformLoc, const float *value, int size) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glUseProgram(shader.id); - - if (size == 1) glUniform1fv(uniformLoc, 1, value); // Shader uniform type: float - else if (size == 2) glUniform2fv(uniformLoc, 1, value); // Shader uniform type: vec2 - else if (size == 3) glUniform3fv(uniformLoc, 1, value); // Shader uniform type: vec3 - else if (size == 4) glUniform4fv(uniformLoc, 1, value); // Shader uniform type: vec4 - else TraceLog(LOG_WARNING, "Shader value float array size not supported"); - - //glUseProgram(0); // Avoid reseting current shader program, in case other uniforms are set -#endif -} - -// Set shader uniform value (int) -void SetShaderValuei(Shader shader, int uniformLoc, const int *value, int size) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glUseProgram(shader.id); - - if (size == 1) glUniform1iv(uniformLoc, 1, value); // Shader uniform type: int - else if (size == 2) glUniform2iv(uniformLoc, 1, value); // Shader uniform type: ivec2 - else if (size == 3) glUniform3iv(uniformLoc, 1, value); // Shader uniform type: ivec3 - else if (size == 4) glUniform4iv(uniformLoc, 1, value); // Shader uniform type: ivec4 - else TraceLog(LOG_WARNING, "Shader value int array size not supported"); - - //glUseProgram(0); -#endif -} - -// Set shader uniform value (matrix 4x4) -void SetShaderValueMatrix(Shader shader, int uniformLoc, Matrix mat) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glUseProgram(shader.id); - - glUniformMatrix4fv(uniformLoc, 1, false, MatrixToFloat(mat)); - - //glUseProgram(0); -#endif -} - -// Set a custom projection matrix (replaces internal projection matrix) -void SetMatrixProjection(Matrix proj) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - projection = proj; -#endif -} - -// Set a custom modelview matrix (replaces internal modelview matrix) -void SetMatrixModelview(Matrix view) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - modelview = view; -#endif -} - -// Return internal modelview matrix -Matrix GetMatrixModelview() -{ - Matrix matrix = MatrixIdentity(); -#if defined(GRAPHICS_API_OPENGL_11) - float mat[16]; - glGetFloatv(GL_MODELVIEW_MATRIX, mat); -#else - matrix = modelview; -#endif - return matrix; -} - -// Generate cubemap texture from HDR texture -// TODO: OpenGL ES 2.0 does not support GL_RGB16F texture format, neither GL_DEPTH_COMPONENT24 -Texture2D GenTextureCubemap(Shader shader, Texture2D skyHDR, int size) -{ - Texture2D cubemap = { 0 }; -#if defined(GRAPHICS_API_OPENGL_33) // || defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: SetShaderDefaultLocations() already setups locations for projection and view Matrix in shader - // Other locations should be setup externally in shader before calling the function - - // Set up depth face culling and cubemap seamless - glDisable(GL_CULL_FACE); -#if defined(GRAPHICS_API_OPENGL_33) - glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS); // Flag not supported on OpenGL ES 2.0 -#endif - - - // Setup framebuffer - unsigned int fbo, rbo; - glGenFramebuffers(1, &fbo); - glGenRenderbuffers(1, &rbo); - glBindFramebuffer(GL_FRAMEBUFFER, fbo); - glBindRenderbuffer(GL_RENDERBUFFER, rbo); - glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, size, size); - glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbo); - - // Set up cubemap to render and attach to framebuffer - // NOTE: faces are stored with 16 bit floating point values - glGenTextures(1, &cubemap.id); - glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap.id); - for (unsigned int i = 0; i < 6; i++) - glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB16F, size, size, 0, GL_RGB, GL_FLOAT, NULL); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); -#if defined(GRAPHICS_API_OPENGL_33) - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); // Flag not supported on OpenGL ES 2.0 -#endif - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - // Create projection (transposed) and different views for each face - Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, 0.01, 1000.0); - //MatrixTranspose(&fboProjection); - Matrix fboViews[6] = { - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ -1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }) - }; - - // Convert HDR equirectangular environment map to cubemap equivalent - glUseProgram(shader.id); - glActiveTexture(GL_TEXTURE0); - glBindTexture(GL_TEXTURE_2D, skyHDR.id); - SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_PROJECTION], fboProjection); - - // Note: don't forget to configure the viewport to the capture dimensions - glViewport(0, 0, size, size); - glBindFramebuffer(GL_FRAMEBUFFER, fbo); - - for (unsigned int i = 0; i < 6; i++) - { - SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_VIEW], fboViews[i]); - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, cubemap.id, 0); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - GenDrawCube(); - } - - // Unbind framebuffer and textures - glBindFramebuffer(GL_FRAMEBUFFER, 0); - - // Reset viewport dimensions to default - glViewport(0, 0, screenWidth, screenHeight); - //glEnable(GL_CULL_FACE); - - cubemap.width = size; - cubemap.height = size; -#endif - return cubemap; -} - -// Generate irradiance texture using cubemap data -// TODO: OpenGL ES 2.0 does not support GL_RGB16F texture format, neither GL_DEPTH_COMPONENT24 -Texture2D GenTextureIrradiance(Shader shader, Texture2D cubemap, int size) -{ - Texture2D irradiance = { 0 }; - -#if defined(GRAPHICS_API_OPENGL_33) // || defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: SetShaderDefaultLocations() already setups locations for projection and view Matrix in shader - // Other locations should be setup externally in shader before calling the function - - // Setup framebuffer - unsigned int fbo, rbo; - glGenFramebuffers(1, &fbo); - glGenRenderbuffers(1, &rbo); - glBindFramebuffer(GL_FRAMEBUFFER, fbo); - glBindRenderbuffer(GL_RENDERBUFFER, rbo); - glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, size, size); - glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbo); - - // Create an irradiance cubemap, and re-scale capture FBO to irradiance scale - glGenTextures(1, &irradiance.id); - glBindTexture(GL_TEXTURE_CUBE_MAP, irradiance.id); - for (unsigned int i = 0; i < 6; i++) - glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB16F, size, size, 0, GL_RGB, GL_FLOAT, NULL); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - // Create projection (transposed) and different views for each face - Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, 0.01, 1000.0); - //MatrixTranspose(&fboProjection); - Matrix fboViews[6] = { - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ -1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }) - }; - - // Solve diffuse integral by convolution to create an irradiance cubemap - glUseProgram(shader.id); - glActiveTexture(GL_TEXTURE0); - glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap.id); - SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_PROJECTION], fboProjection); - - // Note: don't forget to configure the viewport to the capture dimensions - glViewport(0, 0, size, size); - glBindFramebuffer(GL_FRAMEBUFFER, fbo); - - for (unsigned int i = 0; i < 6; i++) - { - SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_VIEW], fboViews[i]); - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, irradiance.id, 0); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - GenDrawCube(); - } - - // Unbind framebuffer and textures - glBindFramebuffer(GL_FRAMEBUFFER, 0); - - // Reset viewport dimensions to default - glViewport(0, 0, screenWidth, screenHeight); - - irradiance.width = size; - irradiance.height = size; -#endif - return irradiance; -} - -// Generate prefilter texture using cubemap data -// TODO: OpenGL ES 2.0 does not support GL_RGB16F texture format, neither GL_DEPTH_COMPONENT24 -Texture2D GenTexturePrefilter(Shader shader, Texture2D cubemap, int size) -{ - Texture2D prefilter = { 0 }; - -#if defined(GRAPHICS_API_OPENGL_33) // || defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: SetShaderDefaultLocations() already setups locations for projection and view Matrix in shader - // Other locations should be setup externally in shader before calling the function - // TODO: Locations should be taken out of this function... too shader dependant... - int roughnessLoc = GetShaderLocation(shader, "roughness"); - - // Setup framebuffer - unsigned int fbo, rbo; - glGenFramebuffers(1, &fbo); - glGenRenderbuffers(1, &rbo); - glBindFramebuffer(GL_FRAMEBUFFER, fbo); - glBindRenderbuffer(GL_RENDERBUFFER, rbo); - glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, size, size); - glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbo); - - // Create a prefiltered HDR environment map - glGenTextures(1, &prefilter.id); - glBindTexture(GL_TEXTURE_CUBE_MAP, prefilter.id); - for (unsigned int i = 0; i < 6; i++) - glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB16F, size, size, 0, GL_RGB, GL_FLOAT, NULL); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - // Generate mipmaps for the prefiltered HDR texture - glGenerateMipmap(GL_TEXTURE_CUBE_MAP); - - // Create projection (transposed) and different views for each face - Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, 0.01, 1000.0); - //MatrixTranspose(&fboProjection); - Matrix fboViews[6] = { - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ -1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), - MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }) - }; - - // Prefilter HDR and store data into mipmap levels - glUseProgram(shader.id); - glActiveTexture(GL_TEXTURE0); - glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap.id); - SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_PROJECTION], fboProjection); - - glBindFramebuffer(GL_FRAMEBUFFER, fbo); - - #define MAX_MIPMAP_LEVELS 5 // Max number of prefilter texture mipmaps - - for (unsigned int mip = 0; mip < MAX_MIPMAP_LEVELS; mip++) - { - // Resize framebuffer according to mip-level size. - unsigned int mipWidth = size*powf(0.5f, mip); - unsigned int mipHeight = size*powf(0.5f, mip); - - glBindRenderbuffer(GL_RENDERBUFFER, rbo); - glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, mipWidth, mipHeight); - glViewport(0, 0, mipWidth, mipHeight); - - float roughness = (float)mip/(float)(MAX_MIPMAP_LEVELS - 1); - glUniform1f(roughnessLoc, roughness); - - for (unsigned int i = 0; i < 6; ++i) - { - SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_VIEW], fboViews[i]); - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, prefilter.id, mip); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - GenDrawCube(); - } - } - - // Unbind framebuffer and textures - glBindFramebuffer(GL_FRAMEBUFFER, 0); - - // Reset viewport dimensions to default - glViewport(0, 0, screenWidth, screenHeight); - - prefilter.width = size; - prefilter.height = size; -#endif - return prefilter; -} - -// Generate BRDF texture using cubemap data -// TODO: OpenGL ES 2.0 does not support GL_RGB16F texture format, neither GL_DEPTH_COMPONENT24 -Texture2D GenTextureBRDF(Shader shader, Texture2D cubemap, int size) -{ - Texture2D brdf = { 0 }; -#if defined(GRAPHICS_API_OPENGL_33) // || defined(GRAPHICS_API_OPENGL_ES2) - // Generate BRDF convolution texture - glGenTextures(1, &brdf.id); - glBindTexture(GL_TEXTURE_2D, brdf.id); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RG16F, size, size, 0, GL_RG, GL_FLOAT, 0); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - // Render BRDF LUT into a quad using FBO - unsigned int fbo, rbo; - glGenFramebuffers(1, &fbo); - glGenRenderbuffers(1, &rbo); - glBindFramebuffer(GL_FRAMEBUFFER, fbo); - glBindRenderbuffer(GL_RENDERBUFFER, rbo); - glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, size, size); - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, brdf.id, 0); - - glViewport(0, 0, size, size); - glUseProgram(shader.id); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - GenDrawQuad(); - - // Unbind framebuffer and textures - glBindFramebuffer(GL_FRAMEBUFFER, 0); - - // Reset viewport dimensions to default - glViewport(0, 0, screenWidth, screenHeight); - - brdf.width = size; - brdf.height = size; -#endif - return brdf; -} - -// Begin blending mode (alpha, additive, multiplied) -// NOTE: Only 3 blending modes supported, default blend mode is alpha -void BeginBlendMode(int mode) -{ - if ((blendMode != mode) && (mode < 3)) - { - rlglDraw(); - - switch (mode) - { - case BLEND_ALPHA: glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); break; - case BLEND_ADDITIVE: glBlendFunc(GL_SRC_ALPHA, GL_ONE); break; // Alternative: glBlendFunc(GL_ONE, GL_ONE); - case BLEND_MULTIPLIED: glBlendFunc(GL_DST_COLOR, GL_ONE_MINUS_SRC_ALPHA); break; - default: break; - } - - blendMode = mode; - } -} - -// End blending mode (reset to default: alpha blending) -void EndBlendMode(void) -{ - BeginBlendMode(BLEND_ALPHA); -} - -#if defined(SUPPORT_VR_SIMULATOR) -// Get VR device information for some standard devices -VrDeviceInfo GetVrDeviceInfo(int vrDeviceType) -{ - VrDeviceInfo hmd = { 0 }; // Current VR device info - - switch (vrDeviceType) - { - case HMD_DEFAULT_DEVICE: - case HMD_OCULUS_RIFT_CV1: - { - // Oculus Rift CV1 parameters - // NOTE: CV1 represents a complete HMD redesign compared to previous versions, - // new Fresnel-hybrid-asymmetric lenses have been added and, consequently, - // previous parameters (DK2) and distortion shader (DK2) doesn't work any more. - // I just defined a set of parameters for simulator that approximate to CV1 stereo rendering - // but result is not the same obtained with Oculus PC SDK. - hmd.hResolution = 2160; // HMD horizontal resolution in pixels - hmd.vResolution = 1200; // HMD vertical resolution in pixels - hmd.hScreenSize = 0.133793f; // HMD horizontal size in meters - hmd.vScreenSize = 0.0669f; // HMD vertical size in meters - hmd.vScreenCenter = 0.04678f; // HMD screen center in meters - hmd.eyeToScreenDistance = 0.041f; // HMD distance between eye and display in meters - hmd.lensSeparationDistance = 0.07f; // HMD lens separation distance in meters - hmd.interpupillaryDistance = 0.07f; // HMD IPD (distance between pupils) in meters - hmd.lensDistortionValues[0] = 1.0f; // HMD lens distortion constant parameter 0 - hmd.lensDistortionValues[1] = 0.22f; // HMD lens distortion constant parameter 1 - hmd.lensDistortionValues[2] = 0.24f; // HMD lens distortion constant parameter 2 - hmd.lensDistortionValues[3] = 0.0f; // HMD lens distortion constant parameter 3 - hmd.chromaAbCorrection[0] = 0.996f; // HMD chromatic aberration correction parameter 0 - hmd.chromaAbCorrection[1] = -0.004f; // HMD chromatic aberration correction parameter 1 - hmd.chromaAbCorrection[2] = 1.014f; // HMD chromatic aberration correction parameter 2 - hmd.chromaAbCorrection[3] = 0.0f; // HMD chromatic aberration correction parameter 3 - - TraceLog(LOG_INFO, "Initializing VR Simulator (Oculus Rift CV1)"); - } break; - case HMD_OCULUS_RIFT_DK2: - { - // Oculus Rift DK2 parameters - hmd.hResolution = 1280; // HMD horizontal resolution in pixels - hmd.vResolution = 800; // HMD vertical resolution in pixels - hmd.hScreenSize = 0.14976f; // HMD horizontal size in meters - hmd.vScreenSize = 0.09356f; // HMD vertical size in meters - hmd.vScreenCenter = 0.04678f; // HMD screen center in meters - hmd.eyeToScreenDistance = 0.041f; // HMD distance between eye and display in meters - hmd.lensSeparationDistance = 0.0635f; // HMD lens separation distance in meters - hmd.interpupillaryDistance = 0.064f; // HMD IPD (distance between pupils) in meters - hmd.lensDistortionValues[0] = 1.0f; // HMD lens distortion constant parameter 0 - hmd.lensDistortionValues[1] = 0.22f; // HMD lens distortion constant parameter 1 - hmd.lensDistortionValues[2] = 0.24f; // HMD lens distortion constant parameter 2 - hmd.lensDistortionValues[3] = 0.0f; // HMD lens distortion constant parameter 3 - hmd.chromaAbCorrection[0] = 0.996f; // HMD chromatic aberration correction parameter 0 - hmd.chromaAbCorrection[1] = -0.004f; // HMD chromatic aberration correction parameter 1 - hmd.chromaAbCorrection[2] = 1.014f; // HMD chromatic aberration correction parameter 2 - hmd.chromaAbCorrection[3] = 0.0f; // HMD chromatic aberration correction parameter 3 - - TraceLog(LOG_INFO, "Initializing VR Simulator (Oculus Rift DK2)"); - } break; - case HMD_OCULUS_GO: - { - // TODO: Provide device display and lens parameters - } - case HMD_VALVE_HTC_VIVE: - { - // TODO: Provide device display and lens parameters - } - case HMD_SONY_PSVR: - { - // TODO: Provide device display and lens parameters - } - default: break; - } - - return hmd; -} - -// Init VR simulator for selected device parameters -// NOTE: It modifies the global variable: VrStereoConfig vrConfig -void InitVrSimulator(VrDeviceInfo info) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Initialize framebuffer and textures for stereo rendering - // NOTE: Screen size should match HMD aspect ratio - vrConfig.stereoFbo = rlLoadRenderTexture(screenWidth, screenHeight); - -#if defined(SUPPORT_DISTORTION_SHADER) - // Load distortion shader - unsigned int vertexShaderId = CompileShader(distortionVShaderStr, GL_VERTEX_SHADER); - unsigned int fragmentShaderId = CompileShader(distortionFShaderStr, GL_FRAGMENT_SHADER); - - vrConfig.distortionShader.id = LoadShaderProgram(vertexShaderId, fragmentShaderId); - if (vrConfig.distortionShader.id > 0) SetShaderDefaultLocations(&vrConfig.distortionShader); -#endif - - // Set VR configutarion parameters, including distortion shader - SetStereoConfig(info); - - vrSimulatorReady = true; -#endif - -#if defined(GRAPHICS_API_OPENGL_11) - TraceLog(LOG_WARNING, "VR Simulator not supported on OpenGL 1.1"); -#endif -} - -// Close VR simulator for current device -void CloseVrSimulator(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (vrSimulatorReady) - { - rlDeleteRenderTextures(vrConfig.stereoFbo); // Unload stereo framebuffer and texture - #if defined(SUPPORT_DISTORTION_SHADER) - UnloadShader(vrConfig.distortionShader); // Unload distortion shader - #endif - } -#endif -} - -// Detect if VR simulator is running -bool IsVrSimulatorReady(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - return vrSimulatorReady; -#else - return false; -#endif -} - -// Set VR distortion shader for stereoscopic rendering -// TODO: Review VR system to be more flexible, move distortion shader to user side -void SetVrDistortionShader(Shader shader) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - vrConfig.distortionShader = shader; - - //SetStereoConfig(info); // TODO: Must be reviewed to set new distortion shader uniform values... -#endif -} - -// Enable/Disable VR experience (device or simulator) -void ToggleVrMode(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - vrSimulatorReady = !vrSimulatorReady; - - if (!vrSimulatorReady) - { - vrStereoRender = false; - - // Reset viewport and default projection-modelview matrices - rlViewport(0, 0, screenWidth, screenHeight); - projection = MatrixOrtho(0.0, screenWidth, screenHeight, 0.0, 0.0, 1.0); - modelview = MatrixIdentity(); - } - else vrStereoRender = true; -#endif -} - -// Update VR tracking (position and orientation) and camera -// NOTE: Camera (position, target, up) gets update with head tracking information -void UpdateVrTracking(Camera *camera) -{ - // TODO: Simulate 1st person camera system -} - -// Begin Oculus drawing configuration -void BeginVrDrawing(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (vrSimulatorReady) - { - // Setup framebuffer for stereo rendering - rlEnableRenderTexture(vrConfig.stereoFbo.id); - - // NOTE: If your application is configured to treat the texture as a linear format (e.g. GL_RGBA) - // and performs linear-to-gamma conversion in GLSL or does not care about gamma-correction, then: - // - Require OculusBuffer format to be OVR_FORMAT_R8G8B8A8_UNORM_SRGB - // - Do NOT enable GL_FRAMEBUFFER_SRGB - //glEnable(GL_FRAMEBUFFER_SRGB); - - //glViewport(0, 0, buffer.width, buffer.height); // Useful if rendering to separate framebuffers (every eye) - rlClearScreenBuffers(); // Clear current framebuffer(s) - - vrStereoRender = true; - } -#endif -} - -// End Oculus drawing process (and desktop mirror) -void EndVrDrawing(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (vrSimulatorReady) - { - vrStereoRender = false; // Disable stereo render - - rlDisableRenderTexture(); // Unbind current framebuffer - - rlClearScreenBuffers(); // Clear current framebuffer - - // Set viewport to default framebuffer size (screen size) - rlViewport(0, 0, screenWidth, screenHeight); - - // Let rlgl reconfigure internal matrices - rlMatrixMode(RL_PROJECTION); // Enable internal projection matrix - rlLoadIdentity(); // Reset internal projection matrix - rlOrtho(0.0, screenWidth, screenHeight, 0.0, 0.0, 1.0); // Recalculate internal projection matrix - rlMatrixMode(RL_MODELVIEW); // Enable internal modelview matrix - rlLoadIdentity(); // Reset internal modelview matrix - -#if defined(SUPPORT_DISTORTION_SHADER) - // Draw RenderTexture (stereoFbo) using distortion shader - currentShader = vrConfig.distortionShader; -#else - currentShader = GetShaderDefault(); -#endif - - rlEnableTexture(vrConfig.stereoFbo.texture.id); - - rlPushMatrix(); - rlBegin(RL_QUADS); - rlColor4ub(255, 255, 255, 255); - rlNormal3f(0.0f, 0.0f, 1.0f); - - // Bottom-left corner for texture and quad - rlTexCoord2f(0.0f, 1.0f); - rlVertex2f(0.0f, 0.0f); - - // Bottom-right corner for texture and quad - rlTexCoord2f(0.0f, 0.0f); - rlVertex2f(0.0f, vrConfig.stereoFbo.texture.height); - - // Top-right corner for texture and quad - rlTexCoord2f(1.0f, 0.0f); - rlVertex2f(vrConfig.stereoFbo.texture.width, vrConfig.stereoFbo.texture.height); - - // Top-left corner for texture and quad - rlTexCoord2f(1.0f, 1.0f); - rlVertex2f(vrConfig.stereoFbo.texture.width, 0.0f); - rlEnd(); - rlPopMatrix(); - - rlDisableTexture(); - - // Update and draw render texture fbo with distortion to backbuffer - UpdateBuffersDefault(); - DrawBuffersDefault(); - - // Restore defaultShader - currentShader = defaultShader; - - // Reset viewport and default projection-modelview matrices - rlViewport(0, 0, screenWidth, screenHeight); - projection = MatrixOrtho(0.0, screenWidth, screenHeight, 0.0, 0.0, 1.0); - modelview = MatrixIdentity(); - - rlDisableDepthTest(); - } -#endif -} -#endif // SUPPORT_VR_SIMULATOR - -//---------------------------------------------------------------------------------- -// Module specific Functions Definition -//---------------------------------------------------------------------------------- - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) -// Compile custom shader and return shader id -static unsigned int CompileShader(const char *shaderStr, int type) -{ - unsigned int shader = glCreateShader(type); - glShaderSource(shader, 1, &shaderStr, NULL); - - GLint success = 0; - glCompileShader(shader); - glGetShaderiv(shader, GL_COMPILE_STATUS, &success); - - if (success != GL_TRUE) - { - TraceLog(LOG_WARNING, "[SHDR ID %i] Failed to compile shader...", shader); - int maxLength = 0; - int length; - glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &maxLength); - -#if defined(_MSC_VER) - char *log = malloc(maxLength); -#else - char log[maxLength]; -#endif - glGetShaderInfoLog(shader, maxLength, &length, log); - - TraceLog(LOG_INFO, "%s", log); - -#if defined(_MSC_VER) - free(log); -#endif - } - else TraceLog(LOG_INFO, "[SHDR ID %i] Shader compiled successfully", shader); - - return shader; -} - -// Load custom shader strings and return program id -static unsigned int LoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId) -{ - unsigned int program = 0; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - - GLint success = 0; - program = glCreateProgram(); - - glAttachShader(program, vShaderId); - glAttachShader(program, fShaderId); - - // NOTE: Default attribute shader locations must be binded before linking - glBindAttribLocation(program, 0, DEFAULT_ATTRIB_POSITION_NAME); - glBindAttribLocation(program, 1, DEFAULT_ATTRIB_TEXCOORD_NAME); - glBindAttribLocation(program, 2, DEFAULT_ATTRIB_NORMAL_NAME); - glBindAttribLocation(program, 3, DEFAULT_ATTRIB_COLOR_NAME); - glBindAttribLocation(program, 4, DEFAULT_ATTRIB_TANGENT_NAME); - glBindAttribLocation(program, 5, DEFAULT_ATTRIB_TEXCOORD2_NAME); - - // NOTE: If some attrib name is no found on the shader, it locations becomes -1 - - glLinkProgram(program); - - // NOTE: All uniform variables are intitialised to 0 when a program links - - glGetProgramiv(program, GL_LINK_STATUS, &success); - - if (success == GL_FALSE) - { - TraceLog(LOG_WARNING, "[SHDR ID %i] Failed to link shader program...", program); - - int maxLength = 0; - int length; - - glGetProgramiv(program, GL_INFO_LOG_LENGTH, &maxLength); - -#ifdef _MSC_VER - char *log = malloc(maxLength); -#else - char log[maxLength]; -#endif - glGetProgramInfoLog(program, maxLength, &length, log); - - TraceLog(LOG_INFO, "%s", log); - -#ifdef _MSC_VER - free(log); -#endif - glDeleteProgram(program); - - program = 0; - } - else TraceLog(LOG_INFO, "[SHDR ID %i] Shader program loaded successfully", program); -#endif - return program; -} - - -// Load default shader (just vertex positioning and texture coloring) -// NOTE: This shader program is used for batch buffers (lines, triangles, quads) -static Shader LoadShaderDefault(void) -{ - Shader shader = { 0 }; - - // NOTE: All locations must be reseted to -1 (no location) - for (int i = 0; i < MAX_SHADER_LOCATIONS; i++) shader.locs[i] = -1; - - // Vertex shader directly defined, no external file required - char defaultVShaderStr[] = -#if defined(GRAPHICS_API_OPENGL_21) - "#version 120 \n" -#elif defined(GRAPHICS_API_OPENGL_ES2) - "#version 100 \n" -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) - "attribute vec3 vertexPosition; \n" - "attribute vec2 vertexTexCoord; \n" - "attribute vec4 vertexColor; \n" - "varying vec2 fragTexCoord; \n" - "varying vec4 fragColor; \n" -#elif defined(GRAPHICS_API_OPENGL_33) - "#version 330 \n" - "in vec3 vertexPosition; \n" - "in vec2 vertexTexCoord; \n" - "in vec4 vertexColor; \n" - "out vec2 fragTexCoord; \n" - "out vec4 fragColor; \n" -#endif - "uniform mat4 mvp; \n" - "void main() \n" - "{ \n" - " fragTexCoord = vertexTexCoord; \n" - " fragColor = vertexColor; \n" - " gl_Position = mvp*vec4(vertexPosition, 1.0); \n" - "} \n"; - - // Fragment shader directly defined, no external file required - char defaultFShaderStr[] = -#if defined(GRAPHICS_API_OPENGL_21) - "#version 120 \n" -#elif defined(GRAPHICS_API_OPENGL_ES2) - "#version 100 \n" - "precision mediump float; \n" // precision required for OpenGL ES2 (WebGL) -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) - "varying vec2 fragTexCoord; \n" - "varying vec4 fragColor; \n" -#elif defined(GRAPHICS_API_OPENGL_33) - "#version 330 \n" - "in vec2 fragTexCoord; \n" - "in vec4 fragColor; \n" - "out vec4 finalColor; \n" -#endif - "uniform sampler2D texture0; \n" - "uniform vec4 colDiffuse; \n" - "void main() \n" - "{ \n" -#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) - " vec4 texelColor = texture2D(texture0, fragTexCoord); \n" // NOTE: texture2D() is deprecated on OpenGL 3.3 and ES 3.0 - " gl_FragColor = texelColor*colDiffuse*fragColor; \n" -#elif defined(GRAPHICS_API_OPENGL_33) - " vec4 texelColor = texture(texture0, fragTexCoord); \n" - " finalColor = texelColor*colDiffuse*fragColor; \n" -#endif - "} \n"; - - // NOTE: Compiled vertex/fragment shaders are kept for re-use - defaultVShaderId = CompileShader(defaultVShaderStr, GL_VERTEX_SHADER); // Compile default vertex shader - defaultFShaderId = CompileShader(defaultFShaderStr, GL_FRAGMENT_SHADER); // Compile default fragment shader - - shader.id = LoadShaderProgram(defaultVShaderId, defaultFShaderId); - - if (shader.id > 0) - { - TraceLog(LOG_INFO, "[SHDR ID %i] Default shader loaded successfully", shader.id); - - // Set default shader locations: attributes locations - shader.locs[LOC_VERTEX_POSITION] = glGetAttribLocation(shader.id, "vertexPosition"); - shader.locs[LOC_VERTEX_TEXCOORD01] = glGetAttribLocation(shader.id, "vertexTexCoord"); - shader.locs[LOC_VERTEX_COLOR] = glGetAttribLocation(shader.id, "vertexColor"); - - // Set default shader locations: uniform locations - shader.locs[LOC_MATRIX_MVP] = glGetUniformLocation(shader.id, "mvp"); - shader.locs[LOC_COLOR_DIFFUSE] = glGetUniformLocation(shader.id, "colDiffuse"); - shader.locs[LOC_MAP_DIFFUSE] = glGetUniformLocation(shader.id, "texture0"); - - // NOTE: We could also use below function but in case DEFAULT_ATTRIB_* points are - // changed for external custom shaders, we just use direct bindings above - //SetShaderDefaultLocations(&shader); - } - else TraceLog(LOG_WARNING, "[SHDR ID %i] Default shader could not be loaded", shader.id); - - return shader; -} - -// Get location handlers to for shader attributes and uniforms -// NOTE: If any location is not found, loc point becomes -1 -static void SetShaderDefaultLocations(Shader *shader) -{ - // NOTE: Default shader attrib locations have been fixed before linking: - // vertex position location = 0 - // vertex texcoord location = 1 - // vertex normal location = 2 - // vertex color location = 3 - // vertex tangent location = 4 - // vertex texcoord2 location = 5 - - // Get handles to GLSL input attibute locations - shader->locs[LOC_VERTEX_POSITION] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_POSITION_NAME); - shader->locs[LOC_VERTEX_TEXCOORD01] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_TEXCOORD_NAME); - shader->locs[LOC_VERTEX_TEXCOORD02] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_TEXCOORD2_NAME); - shader->locs[LOC_VERTEX_NORMAL] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_NORMAL_NAME); - shader->locs[LOC_VERTEX_TANGENT] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_TANGENT_NAME); - shader->locs[LOC_VERTEX_COLOR] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_COLOR_NAME); - - // Get handles to GLSL uniform locations (vertex shader) - shader->locs[LOC_MATRIX_MVP] = glGetUniformLocation(shader->id, "mvp"); - shader->locs[LOC_MATRIX_PROJECTION] = glGetUniformLocation(shader->id, "projection"); - shader->locs[LOC_MATRIX_VIEW] = glGetUniformLocation(shader->id, "view"); - - // Get handles to GLSL uniform locations (fragment shader) - shader->locs[LOC_COLOR_DIFFUSE] = glGetUniformLocation(shader->id, "colDiffuse"); - shader->locs[LOC_MAP_DIFFUSE] = glGetUniformLocation(shader->id, "texture0"); - shader->locs[LOC_MAP_SPECULAR] = glGetUniformLocation(shader->id, "texture1"); - shader->locs[LOC_MAP_NORMAL] = glGetUniformLocation(shader->id, "texture2"); -} - -// Unload default shader -static void UnloadShaderDefault(void) -{ - glUseProgram(0); - - glDetachShader(defaultShader.id, defaultVShaderId); - glDetachShader(defaultShader.id, defaultFShaderId); - glDeleteShader(defaultVShaderId); - glDeleteShader(defaultFShaderId); - - glDeleteProgram(defaultShader.id); -} - -// Load default internal buffers (lines, triangles, quads) -static void LoadBuffersDefault(void) -{ - // [CPU] Allocate and initialize float array buffers to store vertex data (lines, triangles, quads) - //-------------------------------------------------------------------------------------------- - - // Lines - Initialize arrays (vertex position and color data) - lines.vertices = (float *)malloc(sizeof(float)*3*2*MAX_LINES_BATCH); // 3 float by vertex, 2 vertex by line - lines.colors = (unsigned char *)malloc(sizeof(unsigned char)*4*2*MAX_LINES_BATCH); // 4 float by color, 2 colors by line - lines.texcoords = NULL; - lines.indices = NULL; - - for (int i = 0; i < (3*2*MAX_LINES_BATCH); i++) lines.vertices[i] = 0.0f; - for (int i = 0; i < (4*2*MAX_LINES_BATCH); i++) lines.colors[i] = 0; - - lines.vCounter = 0; - lines.cCounter = 0; - lines.tcCounter = 0; - - // Triangles - Initialize arrays (vertex position and color data) - triangles.vertices = (float *)malloc(sizeof(float)*3*3*MAX_TRIANGLES_BATCH); // 3 float by vertex, 3 vertex by triangle - triangles.colors = (unsigned char *)malloc(sizeof(unsigned char)*4*3*MAX_TRIANGLES_BATCH); // 4 float by color, 3 colors by triangle - triangles.texcoords = NULL; - triangles.indices = NULL; - - for (int i = 0; i < (3*3*MAX_TRIANGLES_BATCH); i++) triangles.vertices[i] = 0.0f; - for (int i = 0; i < (4*3*MAX_TRIANGLES_BATCH); i++) triangles.colors[i] = 0; - - triangles.vCounter = 0; - triangles.cCounter = 0; - triangles.tcCounter = 0; - - // Quads - Initialize arrays (vertex position, texcoord, color data and indexes) - quads.vertices = (float *)malloc(sizeof(float)*3*4*MAX_QUADS_BATCH); // 3 float by vertex, 4 vertex by quad - quads.texcoords = (float *)malloc(sizeof(float)*2*4*MAX_QUADS_BATCH); // 2 float by texcoord, 4 texcoord by quad - quads.colors = (unsigned char *)malloc(sizeof(unsigned char)*4*4*MAX_QUADS_BATCH); // 4 float by color, 4 colors by quad -#if defined(GRAPHICS_API_OPENGL_33) - quads.indices = (unsigned int *)malloc(sizeof(unsigned int)*6*MAX_QUADS_BATCH); // 6 int by quad (indices) -#elif defined(GRAPHICS_API_OPENGL_ES2) - quads.indices = (unsigned short *)malloc(sizeof(unsigned short)*6*MAX_QUADS_BATCH); // 6 int by quad (indices) -#endif - - for (int i = 0; i < (3*4*MAX_QUADS_BATCH); i++) quads.vertices[i] = 0.0f; - for (int i = 0; i < (2*4*MAX_QUADS_BATCH); i++) quads.texcoords[i] = 0.0f; - for (int i = 0; i < (4*4*MAX_QUADS_BATCH); i++) quads.colors[i] = 0; - - int k = 0; - - // Indices can be initialized right now - for (int i = 0; i < (6*MAX_QUADS_BATCH); i+=6) - { - quads.indices[i] = 4*k; - quads.indices[i+1] = 4*k+1; - quads.indices[i+2] = 4*k+2; - quads.indices[i+3] = 4*k; - quads.indices[i+4] = 4*k+2; - quads.indices[i+5] = 4*k+3; - - k++; - } - - quads.vCounter = 0; - quads.tcCounter = 0; - quads.cCounter = 0; - - TraceLog(LOG_INFO, "[CPU] Default buffers initialized successfully (lines, triangles, quads)"); - //-------------------------------------------------------------------------------------------- - - // [GPU] Upload vertex data and initialize VAOs/VBOs (lines, triangles, quads) - // NOTE: Default buffers are linked to use currentShader (defaultShader) - //-------------------------------------------------------------------------------------------- - - // Upload and link lines vertex buffers - if (vaoSupported) - { - // Initialize Lines VAO - glGenVertexArrays(1, &lines.vaoId); - glBindVertexArray(lines.vaoId); - } - - // Lines - Vertex buffers binding and attributes enable - // Vertex position buffer (shader-location = 0) - glGenBuffers(2, &lines.vboId[0]); - glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[0]); - glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*2*MAX_LINES_BATCH, lines.vertices, GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); - - // Vertex color buffer (shader-location = 3) - glGenBuffers(2, &lines.vboId[1]); - glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[1]); - glBufferData(GL_ARRAY_BUFFER, sizeof(unsigned char)*4*2*MAX_LINES_BATCH, lines.colors, GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); - - if (vaoSupported) TraceLog(LOG_INFO, "[VAO ID %i] Default buffers VAO initialized successfully (lines)", lines.vaoId); - else TraceLog(LOG_INFO, "[VBO ID %i][VBO ID %i] Default buffers VBOs initialized successfully (lines)", lines.vboId[0], lines.vboId[1]); - - // Upload and link triangles vertex buffers - if (vaoSupported) - { - // Initialize Triangles VAO - glGenVertexArrays(1, &triangles.vaoId); - glBindVertexArray(triangles.vaoId); - } - - // Triangles - Vertex buffers binding and attributes enable - // Vertex position buffer (shader-location = 0) - glGenBuffers(1, &triangles.vboId[0]); - glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[0]); - glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*3*MAX_TRIANGLES_BATCH, triangles.vertices, GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); - - // Vertex color buffer (shader-location = 3) - glGenBuffers(1, &triangles.vboId[1]); - glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[1]); - glBufferData(GL_ARRAY_BUFFER, sizeof(unsigned char)*4*3*MAX_TRIANGLES_BATCH, triangles.colors, GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); - - if (vaoSupported) TraceLog(LOG_INFO, "[VAO ID %i] Default buffers VAO initialized successfully (triangles)", triangles.vaoId); - else TraceLog(LOG_INFO, "[VBO ID %i][VBO ID %i] Default buffers VBOs initialized successfully (triangles)", triangles.vboId[0], triangles.vboId[1]); - - // Upload and link quads vertex buffers - if (vaoSupported) - { - // Initialize Quads VAO - glGenVertexArrays(1, &quads.vaoId); - glBindVertexArray(quads.vaoId); - } - - // Quads - Vertex buffers binding and attributes enable - // Vertex position buffer (shader-location = 0) - glGenBuffers(1, &quads.vboId[0]); - glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[0]); - glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*4*MAX_QUADS_BATCH, quads.vertices, GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); - - // Vertex texcoord buffer (shader-location = 1) - glGenBuffers(1, &quads.vboId[1]); - glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[1]); - glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*4*MAX_QUADS_BATCH, quads.texcoords, GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_TEXCOORD01]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_TEXCOORD01], 2, GL_FLOAT, 0, 0, 0); - - // Vertex color buffer (shader-location = 3) - glGenBuffers(1, &quads.vboId[2]); - glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[2]); - glBufferData(GL_ARRAY_BUFFER, sizeof(unsigned char)*4*4*MAX_QUADS_BATCH, quads.colors, GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); - - // Fill index buffer - glGenBuffers(1, &quads.vboId[3]); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, quads.vboId[3]); -#if defined(GRAPHICS_API_OPENGL_33) - glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(int)*6*MAX_QUADS_BATCH, quads.indices, GL_STATIC_DRAW); -#elif defined(GRAPHICS_API_OPENGL_ES2) - glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(short)*6*MAX_QUADS_BATCH, quads.indices, GL_STATIC_DRAW); -#endif - - if (vaoSupported) TraceLog(LOG_INFO, "[VAO ID %i] Default buffers VAO initialized successfully (quads)", quads.vaoId); - else TraceLog(LOG_INFO, "[VBO ID %i][VBO ID %i][VBO ID %i][VBO ID %i] Default buffers VBOs initialized successfully (quads)", quads.vboId[0], quads.vboId[1], quads.vboId[2], quads.vboId[3]); - - // Unbind the current VAO - if (vaoSupported) glBindVertexArray(0); - //-------------------------------------------------------------------------------------------- -} - -// Update default internal buffers (VAOs/VBOs) with vertex array data -// NOTE: If there is not vertex data, buffers doesn't need to be updated (vertexCount > 0) -// TODO: If no data changed on the CPU arrays --> No need to re-update GPU arrays (change flag required) -static void UpdateBuffersDefault(void) -{ - // Update lines vertex buffers - if (lines.vCounter > 0) - { - // Activate Lines VAO - if (vaoSupported) glBindVertexArray(lines.vaoId); - - // Lines - vertex positions buffer - glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[0]); - //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*2*MAX_LINES_BATCH, lines.vertices, GL_DYNAMIC_DRAW); - glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*3*lines.vCounter, lines.vertices); // target - offset (in bytes) - size (in bytes) - data pointer - - // Lines - colors buffer - glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[1]); - //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*2*MAX_LINES_BATCH, lines.colors, GL_DYNAMIC_DRAW); - glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(unsigned char)*4*lines.cCounter, lines.colors); - } - - // Update triangles vertex buffers - if (triangles.vCounter > 0) - { - // Activate Triangles VAO - if (vaoSupported) glBindVertexArray(triangles.vaoId); - - // Triangles - vertex positions buffer - glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[0]); - //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*3*MAX_TRIANGLES_BATCH, triangles.vertices, GL_DYNAMIC_DRAW); - glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*3*triangles.vCounter, triangles.vertices); - - // Triangles - colors buffer - glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[1]); - //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*3*MAX_TRIANGLES_BATCH, triangles.colors, GL_DYNAMIC_DRAW); - glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(unsigned char)*4*triangles.cCounter, triangles.colors); - } - - // Update quads vertex buffers - if (quads.vCounter > 0) - { - // Activate Quads VAO - if (vaoSupported) glBindVertexArray(quads.vaoId); - - // Quads - vertex positions buffer - glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[0]); - //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*4*MAX_QUADS_BATCH, quads.vertices, GL_DYNAMIC_DRAW); - glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*3*quads.vCounter, quads.vertices); - - // Quads - texture coordinates buffer - glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[1]); - //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*4*MAX_QUADS_BATCH, quads.texcoords, GL_DYNAMIC_DRAW); - glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*2*quads.vCounter, quads.texcoords); - - // Quads - colors buffer - glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[2]); - //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*4*MAX_QUADS_BATCH, quads.colors, GL_DYNAMIC_DRAW); - glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(unsigned char)*4*quads.vCounter, quads.colors); - - // Another option would be using buffer mapping... - //quads.vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_READ_WRITE); - // Now we can modify vertices - //glUnmapBuffer(GL_ARRAY_BUFFER); - } - //-------------------------------------------------------------- - - // Unbind the current VAO - if (vaoSupported) glBindVertexArray(0); -} - -// Draw default internal buffers vertex data -// NOTE: We draw in this order: lines, triangles, quads -static void DrawBuffersDefault(void) -{ - Matrix matProjection = projection; - Matrix matModelView = modelview; - - int eyesCount = 1; -#if defined(SUPPORT_VR_SIMULATOR) - if (vrStereoRender) eyesCount = 2; -#endif - - for (int eye = 0; eye < eyesCount; eye++) - { - #if defined(SUPPORT_VR_SIMULATOR) - if (eyesCount == 2) SetStereoView(eye, matProjection, matModelView); - #endif - - // Set current shader and upload current MVP matrix - if ((lines.vCounter > 0) || (triangles.vCounter > 0) || (quads.vCounter > 0)) - { - glUseProgram(currentShader.id); - - // Create modelview-projection matrix - Matrix matMVP = MatrixMultiply(modelview, projection); - - glUniformMatrix4fv(currentShader.locs[LOC_MATRIX_MVP], 1, false, MatrixToFloat(matMVP)); - glUniform4f(currentShader.locs[LOC_COLOR_DIFFUSE], 1.0f, 1.0f, 1.0f, 1.0f); - glUniform1i(currentShader.locs[LOC_MAP_DIFFUSE], 0); - - // NOTE: Additional map textures not considered for default buffers drawing - } - - // Draw lines buffers - if (lines.vCounter > 0) - { - glActiveTexture(GL_TEXTURE0); - glBindTexture(GL_TEXTURE_2D, whiteTexture); - - if (vaoSupported) - { - glBindVertexArray(lines.vaoId); - } - else - { - // Bind vertex attrib: position (shader-location = 0) - glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[0]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); - - // Bind vertex attrib: color (shader-location = 3) - glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[1]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); - } - - glDrawArrays(GL_LINES, 0, lines.vCounter); - - if (!vaoSupported) glBindBuffer(GL_ARRAY_BUFFER, 0); - glBindTexture(GL_TEXTURE_2D, 0); - } - - // Draw triangles buffers - if (triangles.vCounter > 0) - { - glActiveTexture(GL_TEXTURE0); - glBindTexture(GL_TEXTURE_2D, whiteTexture); - - if (vaoSupported) - { - glBindVertexArray(triangles.vaoId); - } - else - { - // Bind vertex attrib: position (shader-location = 0) - glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[0]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); - - // Bind vertex attrib: color (shader-location = 3) - glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[1]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); - } - - glDrawArrays(GL_TRIANGLES, 0, triangles.vCounter); - - if (!vaoSupported) glBindBuffer(GL_ARRAY_BUFFER, 0); - glBindTexture(GL_TEXTURE_2D, 0); - } - - // Draw quads buffers - if (quads.vCounter > 0) - { - int quadsCount = 0; - int numIndicesToProcess = 0; - int indicesOffset = 0; - - if (vaoSupported) - { - glBindVertexArray(quads.vaoId); - } - else - { - // Bind vertex attrib: position (shader-location = 0) - glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[0]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); - - // Bind vertex attrib: texcoord (shader-location = 1) - glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[1]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_TEXCOORD01], 2, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_TEXCOORD01]); - - // Bind vertex attrib: color (shader-location = 3) - glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[2]); - glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); - glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); - - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, quads.vboId[3]); - } - - //TraceLog(LOG_DEBUG, "Draws required per frame: %i", drawsCounter); - - for (int i = 0; i < drawsCounter; i++) - { - quadsCount = draws[i].vertexCount/4; - numIndicesToProcess = quadsCount*6; // Get number of Quads*6 index by Quad - - //TraceLog(LOG_DEBUG, "Quads to render: %i - Vertex Count: %i", quadsCount, draws[i].vertexCount); - - glActiveTexture(GL_TEXTURE0); - glBindTexture(GL_TEXTURE_2D, draws[i].textureId); - - // NOTE: The final parameter tells the GPU the offset in bytes from the start of the index buffer to the location of the first index to process - #if defined(GRAPHICS_API_OPENGL_33) - glDrawElements(GL_TRIANGLES, numIndicesToProcess, GL_UNSIGNED_INT, (GLvoid *)(sizeof(GLuint)*indicesOffset)); - #elif defined(GRAPHICS_API_OPENGL_ES2) - glDrawElements(GL_TRIANGLES, numIndicesToProcess, GL_UNSIGNED_SHORT, (GLvoid *)(sizeof(GLushort)*indicesOffset)); - #endif - //GLenum err; - //if ((err = glGetError()) != GL_NO_ERROR) TraceLog(LOG_INFO, "OpenGL error: %i", (int)err); //GL_INVALID_ENUM! - - indicesOffset += draws[i].vertexCount/4*6; - } - - if (!vaoSupported) - { - glBindBuffer(GL_ARRAY_BUFFER, 0); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); - } - - glBindTexture(GL_TEXTURE_2D, 0); // Unbind textures - } - - if (vaoSupported) glBindVertexArray(0); // Unbind VAO - - glUseProgram(0); // Unbind shader program - } - - // Reset draws counter - drawsCounter = 1; - draws[0].textureId = whiteTexture; - draws[0].vertexCount = 0; - - // Reset vertex counters for next frame - lines.vCounter = 0; - lines.cCounter = 0; - triangles.vCounter = 0; - triangles.cCounter = 0; - quads.vCounter = 0; - quads.tcCounter = 0; - quads.cCounter = 0; - - // Reset depth for next draw - currentDepth = -1.0f; - - // Restore projection/modelview matrices - projection = matProjection; - modelview = matModelView; -} - -// Unload default internal buffers vertex data from CPU and GPU -static void UnloadBuffersDefault(void) -{ - // Unbind everything - if (vaoSupported) glBindVertexArray(0); - glDisableVertexAttribArray(0); - glDisableVertexAttribArray(1); - glDisableVertexAttribArray(2); - glDisableVertexAttribArray(3); - glBindBuffer(GL_ARRAY_BUFFER, 0); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); - - // Delete VBOs from GPU (VRAM) - glDeleteBuffers(1, &lines.vboId[0]); - glDeleteBuffers(1, &lines.vboId[1]); - glDeleteBuffers(1, &triangles.vboId[0]); - glDeleteBuffers(1, &triangles.vboId[1]); - glDeleteBuffers(1, &quads.vboId[0]); - glDeleteBuffers(1, &quads.vboId[1]); - glDeleteBuffers(1, &quads.vboId[2]); - glDeleteBuffers(1, &quads.vboId[3]); - - if (vaoSupported) - { - // Delete VAOs from GPU (VRAM) - glDeleteVertexArrays(1, &lines.vaoId); - glDeleteVertexArrays(1, &triangles.vaoId); - glDeleteVertexArrays(1, &quads.vaoId); - } - - // Free vertex arrays memory from CPU (RAM) - free(lines.vertices); - free(lines.colors); - - free(triangles.vertices); - free(triangles.colors); - - free(quads.vertices); - free(quads.texcoords); - free(quads.colors); - free(quads.indices); -} - -// Renders a 1x1 XY quad in NDC -static void GenDrawQuad(void) -{ - unsigned int quadVAO = 0; - unsigned int quadVBO = 0; - - float vertices[] = { - // Positions // Texture Coords - -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, - -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, - 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, - 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, - }; - - // Set up plane VAO - glGenVertexArrays(1, &quadVAO); - glGenBuffers(1, &quadVBO); - glBindVertexArray(quadVAO); - - // Fill buffer - glBindBuffer(GL_ARRAY_BUFFER, quadVBO); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), &vertices, GL_STATIC_DRAW); - - // Link vertex attributes - glEnableVertexAttribArray(0); - glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5*sizeof(float), (void *)0); - glEnableVertexAttribArray(1); - glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5*sizeof(float), (void *)(3*sizeof(float))); - - // Draw quad - glBindVertexArray(quadVAO); - glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); - glBindVertexArray(0); - - glDeleteBuffers(1, &quadVBO); - glDeleteVertexArrays(1, &quadVAO); -} - -// Renders a 1x1 3D cube in NDC -static void GenDrawCube(void) -{ - unsigned int cubeVAO = 0; - unsigned int cubeVBO = 0; - - float vertices[] = { - -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, - 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f, - 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, - 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f, - -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, - -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f, - -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, - 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, - 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, - 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, - -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, - -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, - -1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f, - -1.0f, 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 1.0f, - -1.0f, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, - -1.0f, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, - -1.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, - -1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f, - 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, - 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, - 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, - 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, - 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, - 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, - -1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f, - 1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 1.0f, - 1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f, - 1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f, - -1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, - -1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f, - -1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, - 1.0f, 1.0f , 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, - 1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, - 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, - -1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, - -1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f - }; - - // Set up cube VAO - glGenVertexArrays(1, &cubeVAO); - glGenBuffers(1, &cubeVBO); - - // Fill buffer - glBindBuffer(GL_ARRAY_BUFFER, cubeVBO); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); - - // Link vertex attributes - glBindVertexArray(cubeVAO); - glEnableVertexAttribArray(0); - glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8*sizeof(float), (void *)0); - glEnableVertexAttribArray(1); - glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8*sizeof(float), (void *)(3*sizeof(float))); - glEnableVertexAttribArray(2); - glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8*sizeof(float), (void *)(6*sizeof(float))); - glBindBuffer(GL_ARRAY_BUFFER, 0); - glBindVertexArray(0); - - // Draw cube - glBindVertexArray(cubeVAO); - glDrawArrays(GL_TRIANGLES, 0, 36); - glBindVertexArray(0); - - glDeleteBuffers(1, &cubeVBO); - glDeleteVertexArrays(1, &cubeVAO); -} - -#if defined(SUPPORT_VR_SIMULATOR) -// Configure stereo rendering (including distortion shader) with HMD device parameters -// NOTE: It modifies the global variable: VrStereoConfig vrConfig -static void SetStereoConfig(VrDeviceInfo hmd) -{ - // Compute aspect ratio - float aspect = ((float)hmd.hResolution*0.5f)/(float)hmd.vResolution; - - // Compute lens parameters - float lensShift = (hmd.hScreenSize*0.25f - hmd.lensSeparationDistance*0.5f)/hmd.hScreenSize; - float leftLensCenter[2] = { 0.25f + lensShift, 0.5f }; - float rightLensCenter[2] = { 0.75f - lensShift, 0.5f }; - float leftScreenCenter[2] = { 0.25f, 0.5f }; - float rightScreenCenter[2] = { 0.75f, 0.5f }; - - // Compute distortion scale parameters - // NOTE: To get lens max radius, lensShift must be normalized to [-1..1] - float lensRadius = fabs(-1.0f - 4.0f*lensShift); - float lensRadiusSq = lensRadius*lensRadius; - float distortionScale = hmd.lensDistortionValues[0] + - hmd.lensDistortionValues[1]*lensRadiusSq + - hmd.lensDistortionValues[2]*lensRadiusSq*lensRadiusSq + - hmd.lensDistortionValues[3]*lensRadiusSq*lensRadiusSq*lensRadiusSq; - - TraceLog(LOG_DEBUG, "VR: Distortion Scale: %f", distortionScale); - - float normScreenWidth = 0.5f; - float normScreenHeight = 1.0f; - float scaleIn[2] = { 2.0f/normScreenWidth, 2.0f/normScreenHeight/aspect }; - float scale[2] = { normScreenWidth*0.5f/distortionScale, normScreenHeight*0.5f*aspect/distortionScale }; - - TraceLog(LOG_DEBUG, "VR: Distortion Shader: LeftLensCenter = { %f, %f }", leftLensCenter[0], leftLensCenter[1]); - TraceLog(LOG_DEBUG, "VR: Distortion Shader: RightLensCenter = { %f, %f }", rightLensCenter[0], rightLensCenter[1]); - TraceLog(LOG_DEBUG, "VR: Distortion Shader: Scale = { %f, %f }", scale[0], scale[1]); - TraceLog(LOG_DEBUG, "VR: Distortion Shader: ScaleIn = { %f, %f }", scaleIn[0], scaleIn[1]); - -#if defined(SUPPORT_DISTORTION_SHADER) - // Update distortion shader with lens and distortion-scale parameters - SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "leftLensCenter"), leftLensCenter, 2); - SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "rightLensCenter"), rightLensCenter, 2); - SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "leftScreenCenter"), leftScreenCenter, 2); - SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "rightScreenCenter"), rightScreenCenter, 2); - - SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "scale"), scale, 2); - SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "scaleIn"), scaleIn, 2); - SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "hmdWarpParam"), hmd.lensDistortionValues, 4); - SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "chromaAbParam"), hmd.chromaAbCorrection, 4); -#endif - - // Fovy is normally computed with: 2*atan2(hmd.vScreenSize, 2*hmd.eyeToScreenDistance) - // ...but with lens distortion it is increased (see Oculus SDK Documentation) - //float fovy = 2.0f*atan2(hmd.vScreenSize*0.5f*distortionScale, hmd.eyeToScreenDistance); // Really need distortionScale? - float fovy = 2.0f*(float)atan2(hmd.vScreenSize*0.5f, hmd.eyeToScreenDistance); - - // Compute camera projection matrices - float projOffset = 4.0f*lensShift; // Scaled to projection space coordinates [-1..1] - Matrix proj = MatrixPerspective(fovy, aspect, 0.01, 1000.0); - vrConfig.eyesProjection[0] = MatrixMultiply(proj, MatrixTranslate(projOffset, 0.0f, 0.0f)); - vrConfig.eyesProjection[1] = MatrixMultiply(proj, MatrixTranslate(-projOffset, 0.0f, 0.0f)); - - // Compute camera transformation matrices - // NOTE: Camera movement might seem more natural if we model the head. - // Our axis of rotation is the base of our head, so we might want to add - // some y (base of head to eye level) and -z (center of head to eye protrusion) to the camera positions. - vrConfig.eyesViewOffset[0] = MatrixTranslate(-hmd.interpupillaryDistance*0.5f, 0.075f, 0.045f); - vrConfig.eyesViewOffset[1] = MatrixTranslate(hmd.interpupillaryDistance*0.5f, 0.075f, 0.045f); - - // Compute eyes Viewports - vrConfig.eyesViewport[0] = (Rectangle){ 0, 0, hmd.hResolution/2, hmd.vResolution }; - vrConfig.eyesViewport[1] = (Rectangle){ hmd.hResolution/2, 0, hmd.hResolution/2, hmd.vResolution }; -} - -// Set internal projection and modelview matrix depending on eyes tracking data -static void SetStereoView(int eye, Matrix matProjection, Matrix matModelView) -{ - Matrix eyeProjection = matProjection; - Matrix eyeModelView = matModelView; - - // Setup viewport and projection/modelview matrices using tracking data - rlViewport(eye*screenWidth/2, 0, screenWidth/2, screenHeight); - - // Apply view offset to modelview matrix - eyeModelView = MatrixMultiply(matModelView, vrConfig.eyesViewOffset[eye]); - - // Set current eye projection matrix - eyeProjection = vrConfig.eyesProjection[eye]; - - SetMatrixModelview(eyeModelView); - SetMatrixProjection(eyeProjection); -} -#endif // defined(SUPPORT_VR_SIMULATOR) - -#endif //defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - -// Get OpenGL internal formats and data type from raylib PixelFormat -static void GetGlFormats(int format, int *glInternalFormat, int *glFormat, int *glType) -{ - *glInternalFormat = -1; - *glFormat = -1; - *glType = -1; - - switch (format) - { - #if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_21) || defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: on OpenGL ES 2.0 (WebGL), internalFormat must match format and options allowed are: GL_LUMINANCE, GL_RGB, GL_RGBA - case UNCOMPRESSED_GRAYSCALE: *glInternalFormat = GL_LUMINANCE; *glFormat = GL_LUMINANCE; *glType = GL_UNSIGNED_BYTE; break; - case UNCOMPRESSED_GRAY_ALPHA: *glInternalFormat = GL_LUMINANCE_ALPHA; *glFormat = GL_LUMINANCE_ALPHA; *glType = GL_UNSIGNED_BYTE; break; - case UNCOMPRESSED_R5G6B5: *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_UNSIGNED_SHORT_5_6_5; break; - case UNCOMPRESSED_R8G8B8: *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_UNSIGNED_BYTE; break; - case UNCOMPRESSED_R5G5B5A1: *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_5_5_5_1; break; - case UNCOMPRESSED_R4G4B4A4: *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_4_4_4_4; break; - case UNCOMPRESSED_R8G8B8A8: *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_BYTE; break; - #if !defined(GRAPHICS_API_OPENGL_11) - case UNCOMPRESSED_R32: if (texFloatSupported) *glInternalFormat = GL_LUMINANCE; *glFormat = GL_LUMINANCE; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float - case UNCOMPRESSED_R32G32B32: if (texFloatSupported) *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float - case UNCOMPRESSED_R32G32B32A32: if (texFloatSupported) *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float - #endif - #elif defined(GRAPHICS_API_OPENGL_33) - case UNCOMPRESSED_GRAYSCALE: *glInternalFormat = GL_R8; *glFormat = GL_RED; *glType = GL_UNSIGNED_BYTE; break; - case UNCOMPRESSED_GRAY_ALPHA: *glInternalFormat = GL_RG8; *glFormat = GL_RG; *glType = GL_UNSIGNED_BYTE; break; - case UNCOMPRESSED_R5G6B5: *glInternalFormat = GL_RGB565; *glFormat = GL_RGB; *glType = GL_UNSIGNED_SHORT_5_6_5; break; - case UNCOMPRESSED_R8G8B8: *glInternalFormat = GL_RGB8; *glFormat = GL_RGB; *glType = GL_UNSIGNED_BYTE; break; - case UNCOMPRESSED_R5G5B5A1: *glInternalFormat = GL_RGB5_A1; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_5_5_5_1; break; - case UNCOMPRESSED_R4G4B4A4: *glInternalFormat = GL_RGBA4; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_4_4_4_4; break; - case UNCOMPRESSED_R8G8B8A8: *glInternalFormat = GL_RGBA8; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_BYTE; break; - case UNCOMPRESSED_R32: if (texFloatSupported) *glInternalFormat = GL_R32F; *glFormat = GL_RED; *glType = GL_FLOAT; break; - case UNCOMPRESSED_R32G32B32: if (texFloatSupported) *glInternalFormat = GL_RGB32F; *glFormat = GL_RGB; *glType = GL_FLOAT; break; - case UNCOMPRESSED_R32G32B32A32: if (texFloatSupported) *glInternalFormat = GL_RGBA32F; *glFormat = GL_RGBA; *glType = GL_FLOAT; break; - #endif - #if !defined(GRAPHICS_API_OPENGL_11) - case COMPRESSED_DXT1_RGB: if (texCompDXTSupported) *glInternalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; break; - case COMPRESSED_DXT1_RGBA: if (texCompDXTSupported) *glInternalFormat = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; break; - case COMPRESSED_DXT3_RGBA: if (texCompDXTSupported) *glInternalFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; break; - case COMPRESSED_DXT5_RGBA: if (texCompDXTSupported) *glInternalFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; break; - case COMPRESSED_ETC1_RGB: if (texCompETC1Supported) *glInternalFormat = GL_ETC1_RGB8_OES; break; // NOTE: Requires OpenGL ES 2.0 or OpenGL 4.3 - case COMPRESSED_ETC2_RGB: if (texCompETC2Supported) *glInternalFormat = GL_COMPRESSED_RGB8_ETC2; break; // NOTE: Requires OpenGL ES 3.0 or OpenGL 4.3 - case COMPRESSED_ETC2_EAC_RGBA: if (texCompETC2Supported) *glInternalFormat = GL_COMPRESSED_RGBA8_ETC2_EAC; break; // NOTE: Requires OpenGL ES 3.0 or OpenGL 4.3 - case COMPRESSED_PVRT_RGB: if (texCompPVRTSupported) *glInternalFormat = GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG; break; // NOTE: Requires PowerVR GPU - case COMPRESSED_PVRT_RGBA: if (texCompPVRTSupported) *glInternalFormat = GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG; break; // NOTE: Requires PowerVR GPU - case COMPRESSED_ASTC_4x4_RGBA: if (texCompASTCSupported) *glInternalFormat = GL_COMPRESSED_RGBA_ASTC_4x4_KHR; break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 - case COMPRESSED_ASTC_8x8_RGBA: if (texCompASTCSupported) *glInternalFormat = GL_COMPRESSED_RGBA_ASTC_8x8_KHR; break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 - #endif - default: TraceLog(LOG_WARNING, "Texture format not supported"); break; - } -} - -#if defined(GRAPHICS_API_OPENGL_11) -// Mipmaps data is generated after image data -// NOTE: Only works with RGBA (4 bytes) data! -static int GenerateMipmaps(unsigned char *data, int baseWidth, int baseHeight) -{ - int mipmapCount = 1; // Required mipmap levels count (including base level) - int width = baseWidth; - int height = baseHeight; - int size = baseWidth*baseHeight*4; // Size in bytes (will include mipmaps...), RGBA only - - // Count mipmap levels required - while ((width != 1) && (height != 1)) - { - if (width != 1) width /= 2; - if (height != 1) height /= 2; - - TraceLog(LOG_DEBUG, "Next mipmap size: %i x %i", width, height); - - mipmapCount++; - - size += (width*height*4); // Add mipmap size (in bytes) - } - - TraceLog(LOG_DEBUG, "Total mipmaps required: %i", mipmapCount); - TraceLog(LOG_DEBUG, "Total size of data required: %i", size); - - unsigned char *temp = realloc(data, size); - - if (temp != NULL) data = temp; - else TraceLog(LOG_WARNING, "Mipmaps required memory could not be allocated"); - - width = baseWidth; - height = baseHeight; - size = (width*height*4); - - // Generate mipmaps - // NOTE: Every mipmap data is stored after data - Color *image = (Color *)malloc(width*height*sizeof(Color)); - Color *mipmap = NULL; - int offset = 0; - int j = 0; - - for (int i = 0; i < size; i += 4) - { - image[j].r = data[i]; - image[j].g = data[i + 1]; - image[j].b = data[i + 2]; - image[j].a = data[i + 3]; - j++; - } - - TraceLog(LOG_DEBUG, "Mipmap base (%ix%i)", width, height); - - for (int mip = 1; mip < mipmapCount; mip++) - { - mipmap = GenNextMipmap(image, width, height); - - offset += (width*height*4); // Size of last mipmap - j = 0; - - width /= 2; - height /= 2; - size = (width*height*4); // Mipmap size to store after offset - - // Add mipmap to data - for (int i = 0; i < size; i += 4) - { - data[offset + i] = mipmap[j].r; - data[offset + i + 1] = mipmap[j].g; - data[offset + i + 2] = mipmap[j].b; - data[offset + i + 3] = mipmap[j].a; - j++; - } - - free(image); - - image = mipmap; - mipmap = NULL; - } - - free(mipmap); // free mipmap data - - return mipmapCount; -} - -// Manual mipmap generation (basic scaling algorithm) -static Color *GenNextMipmap(Color *srcData, int srcWidth, int srcHeight) -{ - int x2, y2; - Color prow, pcol; - - int width = srcWidth/2; - int height = srcHeight/2; - - Color *mipmap = (Color *)malloc(width*height*sizeof(Color)); - - // Scaling algorithm works perfectly (box-filter) - for (int y = 0; y < height; y++) - { - y2 = 2*y; - - for (int x = 0; x < width; x++) - { - x2 = 2*x; - - prow.r = (srcData[y2*srcWidth + x2].r + srcData[y2*srcWidth + x2 + 1].r)/2; - prow.g = (srcData[y2*srcWidth + x2].g + srcData[y2*srcWidth + x2 + 1].g)/2; - prow.b = (srcData[y2*srcWidth + x2].b + srcData[y2*srcWidth + x2 + 1].b)/2; - prow.a = (srcData[y2*srcWidth + x2].a + srcData[y2*srcWidth + x2 + 1].a)/2; - - pcol.r = (srcData[(y2+1)*srcWidth + x2].r + srcData[(y2+1)*srcWidth + x2 + 1].r)/2; - pcol.g = (srcData[(y2+1)*srcWidth + x2].g + srcData[(y2+1)*srcWidth + x2 + 1].g)/2; - pcol.b = (srcData[(y2+1)*srcWidth + x2].b + srcData[(y2+1)*srcWidth + x2 + 1].b)/2; - pcol.a = (srcData[(y2+1)*srcWidth + x2].a + srcData[(y2+1)*srcWidth + x2 + 1].a)/2; - - mipmap[y*width + x].r = (prow.r + pcol.r)/2; - mipmap[y*width + x].g = (prow.g + pcol.g)/2; - mipmap[y*width + x].b = (prow.b + pcol.b)/2; - mipmap[y*width + x].a = (prow.a + pcol.a)/2; - } - } - - TraceLog(LOG_DEBUG, "Mipmap generated successfully (%ix%i)", width, height); - - return mipmap; -} -#endif - -#if defined(RLGL_STANDALONE) -// Show trace log messages (LOG_INFO, LOG_WARNING, LOG_ERROR, LOG_DEBUG) -void TraceLog(int msgType, const char *text, ...) -{ - va_list args; - va_start(args, text); - - switch (msgType) - { - case LOG_INFO: fprintf(stdout, "INFO: "); break; - case LOG_ERROR: fprintf(stdout, "ERROR: "); break; - case LOG_WARNING: fprintf(stdout, "WARNING: "); break; - case LOG_DEBUG: fprintf(stdout, "DEBUG: "); break; - default: break; - } - - vfprintf(stdout, text, args); - fprintf(stdout, "\n"); - - va_end(args); - - if (msgType == LOG_ERROR) exit(1); -} -#endif @@ -21,6 +21,11 @@ * Those preprocessor defines are only used on rlgl module, if OpenGL version is * required by any other module, use rlGetVersion() tocheck it * +* #define RLGL_IMPLEMENTATION +* Generates the implementation of the library into the included file. +* If not defined, the library is in header only mode and can be included in other headers +* or source files without problems. But only ONE file should hold the implementation. +* * #define RLGL_STANDALONE * Use rlgl as standalone library (no raylib dependency) * @@ -28,7 +33,7 @@ * Support VR simulation functionality (stereo rendering) * * #define SUPPORT_DISTORTION_SHADER -* Include stereo rendering distortion shader (shader_distortion.h) +* Include stereo rendering distortion shader (embedded) * * DEPENDENCIES: * raymath - 3D math functionality (Vector3, Matrix, Quaternion) @@ -37,7 +42,7 @@ * * LICENSE: zlib/libpng * -* Copyright (c) 2014-2017 Ramon Santamaria (@raysan5) +* Copyright (c) 2014-2018 Ramon Santamaria (@raysan5) * * This software is provided "as-is", without any express or implied warranty. In no event * will the authors be held liable for any damages arising from the use of this software. @@ -68,8 +73,11 @@ #include "raymath.h" // Required for: Vector3, Matrix // Security check in case no GRAPHICS_API_OPENGL_* defined -#if !defined(GRAPHICS_API_OPENGL_11) && !defined(GRAPHICS_API_OPENGL_21) && !defined(GRAPHICS_API_OPENGL_33) && !defined(GRAPHICS_API_OPENGL_ES2) - #define GRAPHICS_API_OPENGL_11 +#if !defined(GRAPHICS_API_OPENGL_11) && \ + !defined(GRAPHICS_API_OPENGL_21) && \ + !defined(GRAPHICS_API_OPENGL_33) && \ + !defined(GRAPHICS_API_OPENGL_ES2) + #define GRAPHICS_API_OPENGL_33 #endif // Security check in case multiple GRAPHICS_API_OPENGL_* defined @@ -498,3 +506,4259 @@ void TraceLog(int msgType, const char *text, ...); // Show trace log messag #endif #endif // RLGL_H + +/*********************************************************************************** +* +* RLGL IMPLEMENTATION +* +************************************************************************************/ + +#if defined(RLGL_IMPLEMENTATION) + +#include "config.h" + +#include <stdio.h> // Required for: fopen(), fclose(), fread()... [Used only on LoadText()] +#include <stdlib.h> // Required for: malloc(), free(), rand() +#include <string.h> // Required for: strcmp(), strlen(), strtok() [Used only in extensions loading] +#include <math.h> // Required for: atan2() + +#if !defined(RLGL_STANDALONE) + #include "raymath.h" // Required for: Vector3 and Matrix functions +#endif + +#if defined(GRAPHICS_API_OPENGL_11) + #if defined(__APPLE__) + #include <OpenGL/gl.h> // OpenGL 1.1 library for OSX + #include <OpenGL/glext.h> + #else + // APIENTRY for OpenGL function pointer declarations is required + #ifndef APIENTRY + #ifdef _WIN32 + #define APIENTRY __stdcall + #else + #define APIENTRY + #endif + #endif + // WINGDIAPI definition. Some Windows OpenGL headers need it + #if !defined(WINGDIAPI) && defined(_WIN32) + #define WINGDIAPI __declspec(dllimport) + #endif + + #include <GL/gl.h> // OpenGL 1.1 library + #endif +#endif + +#if defined(GRAPHICS_API_OPENGL_21) + #define GRAPHICS_API_OPENGL_33 // OpenGL 2.1 uses mostly OpenGL 3.3 Core functionality +#endif + +#if defined(GRAPHICS_API_OPENGL_33) + #if defined(__APPLE__) + #include <OpenGL/gl3.h> // OpenGL 3 library for OSX + #include <OpenGL/gl3ext.h> // OpenGL 3 extensions library for OSX + #else + #define GLAD_IMPLEMENTATION + #if defined(RLGL_STANDALONE) + #include "glad.h" // GLAD extensions loading library, includes OpenGL headers + #else + #include "external/glad.h" // GLAD extensions loading library, includes OpenGL headers + #endif + #endif +#endif + +#if defined(GRAPHICS_API_OPENGL_ES2) + #include <EGL/egl.h> // EGL library + #include <GLES2/gl2.h> // OpenGL ES 2.0 library + #include <GLES2/gl2ext.h> // OpenGL ES 2.0 extensions library +#endif + +#if defined(RLGL_STANDALONE) + #include <stdarg.h> // Required for: va_list, va_start(), vfprintf(), va_end() [Used only on TraceLog()] +#endif + +//---------------------------------------------------------------------------------- +// Defines and Macros +//---------------------------------------------------------------------------------- +#define MATRIX_STACK_SIZE 16 // Matrix stack max size +#define MAX_DRAWS_BY_TEXTURE 256 // Draws are organized by texture changes +#define TEMP_VERTEX_BUFFER_SIZE 4096 // Temporal Vertex Buffer (required for vertex-transformations) + // NOTE: Every vertex are 3 floats (12 bytes) + +#ifndef GL_SHADING_LANGUAGE_VERSION + #define GL_SHADING_LANGUAGE_VERSION 0x8B8C +#endif + +#ifndef GL_COMPRESSED_RGB_S3TC_DXT1_EXT + #define GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0 +#endif +#ifndef GL_COMPRESSED_RGBA_S3TC_DXT1_EXT + #define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1 +#endif +#ifndef GL_COMPRESSED_RGBA_S3TC_DXT3_EXT + #define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2 +#endif +#ifndef GL_COMPRESSED_RGBA_S3TC_DXT5_EXT + #define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3 +#endif +#ifndef GL_ETC1_RGB8_OES + #define GL_ETC1_RGB8_OES 0x8D64 +#endif +#ifndef GL_COMPRESSED_RGB8_ETC2 + #define GL_COMPRESSED_RGB8_ETC2 0x9274 +#endif +#ifndef GL_COMPRESSED_RGBA8_ETC2_EAC + #define GL_COMPRESSED_RGBA8_ETC2_EAC 0x9278 +#endif +#ifndef GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG + #define GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG 0x8C00 +#endif +#ifndef GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG + #define GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG 0x8C02 +#endif +#ifndef GL_COMPRESSED_RGBA_ASTC_4x4_KHR + #define GL_COMPRESSED_RGBA_ASTC_4x4_KHR 0x93b0 +#endif +#ifndef GL_COMPRESSED_RGBA_ASTC_8x8_KHR + #define GL_COMPRESSED_RGBA_ASTC_8x8_KHR 0x93b7 +#endif + +#ifndef GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT + #define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF +#endif + +#ifndef GL_TEXTURE_MAX_ANISOTROPY_EXT + #define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE +#endif + +#if defined(GRAPHICS_API_OPENGL_11) + #define GL_UNSIGNED_SHORT_5_6_5 0x8363 + #define GL_UNSIGNED_SHORT_5_5_5_1 0x8034 + #define GL_UNSIGNED_SHORT_4_4_4_4 0x8033 +#endif + +#if defined(GRAPHICS_API_OPENGL_21) + #define GL_LUMINANCE 0x1909 + #define GL_LUMINANCE_ALPHA 0x190A +#endif + +#if defined(GRAPHICS_API_OPENGL_ES2) + #define glClearDepth glClearDepthf + #define GL_READ_FRAMEBUFFER GL_FRAMEBUFFER + #define GL_DRAW_FRAMEBUFFER GL_FRAMEBUFFER +#endif + +// Default vertex attribute names on shader to set location points +#define DEFAULT_ATTRIB_POSITION_NAME "vertexPosition" // shader-location = 0 +#define DEFAULT_ATTRIB_TEXCOORD_NAME "vertexTexCoord" // shader-location = 1 +#define DEFAULT_ATTRIB_NORMAL_NAME "vertexNormal" // shader-location = 2 +#define DEFAULT_ATTRIB_COLOR_NAME "vertexColor" // shader-location = 3 +#define DEFAULT_ATTRIB_TANGENT_NAME "vertexTangent" // shader-location = 4 +#define DEFAULT_ATTRIB_TEXCOORD2_NAME "vertexTexCoord2" // shader-location = 5 + +//---------------------------------------------------------------------------------- +// Types and Structures Definition +//---------------------------------------------------------------------------------- + +// Dynamic vertex buffers (position + texcoords + colors + indices arrays) +typedef struct DynamicBuffer { + int vCounter; // vertex position counter to process (and draw) from full buffer + int tcCounter; // vertex texcoord counter to process (and draw) from full buffer + int cCounter; // vertex color counter to process (and draw) from full buffer + float *vertices; // vertex position (XYZ - 3 components per vertex) (shader-location = 0) + float *texcoords; // vertex texture coordinates (UV - 2 components per vertex) (shader-location = 1) + unsigned char *colors; // vertex colors (RGBA - 4 components per vertex) (shader-location = 3) +#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) + unsigned int *indices; // vertex indices (in case vertex data comes indexed) (6 indices per quad) +#elif defined(GRAPHICS_API_OPENGL_ES2) + unsigned short *indices; // vertex indices (in case vertex data comes indexed) (6 indices per quad) + // NOTE: 6*2 byte = 12 byte, not alignment problem! +#endif + unsigned int vaoId; // OpenGL Vertex Array Object id + unsigned int vboId[4]; // OpenGL Vertex Buffer Objects id (4 types of vertex data) +} DynamicBuffer; + +// Draw call type +// NOTE: Used to track required draw-calls, organized by texture +typedef struct DrawCall { + int vertexCount; + GLuint vaoId; + GLuint textureId; + GLuint shaderId; + + Matrix projection; + Matrix modelview; + + // TODO: Store additional draw state data + //int blendMode; + //Guint fboId; +} DrawCall; + +#if defined(SUPPORT_VR_SIMULATOR) +// VR Stereo rendering configuration for simulator +typedef struct VrStereoConfig { + RenderTexture2D stereoFbo; // VR stereo rendering framebuffer + Shader distortionShader; // VR stereo rendering distortion shader + Rectangle eyesViewport[2]; // VR stereo rendering eyes viewports + Matrix eyesProjection[2]; // VR stereo rendering eyes projection matrices + Matrix eyesViewOffset[2]; // VR stereo rendering eyes view offset matrices +} VrStereoConfig; +#endif + +//---------------------------------------------------------------------------------- +// Global Variables Definition +//---------------------------------------------------------------------------------- +#if !defined(GRAPHICS_API_OPENGL_11) && defined(SUPPORT_DISTORTION_SHADER) + // Distortion shader embedded + static char distortionFShaderStr[] = + #if defined(GRAPHICS_API_OPENGL_21) + "#version 120 \n" + #elif defined(GRAPHICS_API_OPENGL_ES2) + "#version 100 \n" + "precision mediump float; \n" // precision required for OpenGL ES2 (WebGL) + #endif + #if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) + "varying vec2 fragTexCoord; \n" + "varying vec4 fragColor; \n" + #elif defined(GRAPHICS_API_OPENGL_33) + "#version 330 \n" + "in vec2 fragTexCoord; \n" + "in vec4 fragColor; \n" + "out vec4 finalColor; \n" + #endif + "uniform sampler2D texture0; \n" + #if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) + "uniform vec2 leftLensCenter; \n" + "uniform vec2 rightLensCenter; \n" + "uniform vec2 leftScreenCenter; \n" + "uniform vec2 rightScreenCenter; \n" + "uniform vec2 scale; \n" + "uniform vec2 scaleIn; \n" + "uniform vec4 hmdWarpParam; \n" + "uniform vec4 chromaAbParam; \n" + #elif defined(GRAPHICS_API_OPENGL_33) + "uniform vec2 leftLensCenter = vec2(0.288, 0.5); \n" + "uniform vec2 rightLensCenter = vec2(0.712, 0.5); \n" + "uniform vec2 leftScreenCenter = vec2(0.25, 0.5); \n" + "uniform vec2 rightScreenCenter = vec2(0.75, 0.5); \n" + "uniform vec2 scale = vec2(0.25, 0.45); \n" + "uniform vec2 scaleIn = vec2(4, 2.2222); \n" + "uniform vec4 hmdWarpParam = vec4(1, 0.22, 0.24, 0); \n" + "uniform vec4 chromaAbParam = vec4(0.996, -0.004, 1.014, 0.0); \n" + #endif + "void main() \n" + "{ \n" + " vec2 lensCenter = fragTexCoord.x < 0.5 ? leftLensCenter : rightLensCenter; \n" + " vec2 screenCenter = fragTexCoord.x < 0.5 ? leftScreenCenter : rightScreenCenter; \n" + " vec2 theta = (fragTexCoord - lensCenter)*scaleIn; \n" + " float rSq = theta.x*theta.x + theta.y*theta.y; \n" + " vec2 theta1 = theta*(hmdWarpParam.x + hmdWarpParam.y*rSq + hmdWarpParam.z*rSq*rSq + hmdWarpParam.w*rSq*rSq*rSq); \n" + " vec2 thetaBlue = theta1*(chromaAbParam.z + chromaAbParam.w*rSq); \n" + " vec2 tcBlue = lensCenter + scale*thetaBlue; \n" + " if (any(bvec2(clamp(tcBlue, screenCenter - vec2(0.25, 0.5), screenCenter + vec2(0.25, 0.5)) - tcBlue))) \n" + " { \n" + #if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) + " gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0); \n" + #elif defined(GRAPHICS_API_OPENGL_33) + " finalColor = vec4(0.0, 0.0, 0.0, 1.0); \n" + #endif + " } \n" + " else \n" + " { \n" + #if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) + " float blue = texture2D(texture0, tcBlue).b; \n" + " vec2 tcGreen = lensCenter + scale*theta1; \n" + " float green = texture2D(texture0, tcGreen).g; \n" + #elif defined(GRAPHICS_API_OPENGL_33) + " float blue = texture(texture0, tcBlue).b; \n" + " vec2 tcGreen = lensCenter + scale*theta1; \n" + " float green = texture(texture0, tcGreen).g; \n" + #endif + " vec2 thetaRed = theta1*(chromaAbParam.x + chromaAbParam.y*rSq); \n" + " vec2 tcRed = lensCenter + scale*thetaRed; \n" + #if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) + " float red = texture2D(texture0, tcRed).r; \n" + " gl_FragColor = vec4(red, green, blue, 1.0); \n" + #elif defined(GRAPHICS_API_OPENGL_33) + " float red = texture(texture0, tcRed).r; \n" + " finalColor = vec4(red, green, blue, 1.0); \n" + #endif + " } \n" + "} \n"; +#endif + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) +static Matrix stack[MATRIX_STACK_SIZE]; +static int stackCounter = 0; + +static Matrix modelview; +static Matrix projection; +static Matrix *currentMatrix; +static int currentMatrixMode; + +static int currentDrawMode; + +static float currentDepth = -1.0f; + +static DynamicBuffer lines; // Default dynamic buffer for lines data +static DynamicBuffer triangles; // Default dynamic buffer for triangles data +static DynamicBuffer quads; // Default dynamic buffer for quads data (used to draw textures) + +// Default buffers draw calls +static DrawCall *draws; +static int drawsCounter; + +// Temp vertex buffer to be used with rlTranslate, rlRotate, rlScale +static Vector3 *tempBuffer; +static int tempBufferCount = 0; +static bool useTempBuffer = false; + +// Shaders +static unsigned int defaultVShaderId; // Default vertex shader id (used by default shader program) +static unsigned int defaultFShaderId; // Default fragment shader Id (used by default shader program) + +static Shader defaultShader; // Basic shader, support vertex color and diffuse texture +static Shader currentShader; // Shader to be used on rendering (by default, defaultShader) + +// Extension supported flag: VAO +static bool vaoSupported = false; // VAO support (OpenGL ES2 could not support VAO extension) + +// Extension supported flag: Compressed textures +static bool texCompETC1Supported = false; // ETC1 texture compression support +static bool texCompETC2Supported = false; // ETC2/EAC texture compression support +static bool texCompPVRTSupported = false; // PVR texture compression support +static bool texCompASTCSupported = false; // ASTC texture compression support + +#if defined(SUPPORT_VR_SIMULATOR) +// VR global variables +static VrStereoConfig vrConfig; // VR stereo configuration for simulator +static bool vrSimulatorReady = false; // VR simulator ready flag +static bool vrStereoRender = false; // VR stereo rendering enabled/disabled flag + // NOTE: This flag is useful to render data over stereo image (i.e. FPS) +#endif // defined(SUPPORT_VR_SIMULATOR) + +#endif // defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + +// Extension supported flag: Anisotropic filtering +static bool texAnisotropicFilterSupported = false; // Anisotropic texture filtering support +static float maxAnisotropicLevel = 0.0f; // Maximum anisotropy level supported (minimum is 2.0f) + +// Extension supported flag: Clamp mirror wrap mode +static bool texClampMirrorSupported = false; // Clamp mirror wrap mode supported + +#if defined(GRAPHICS_API_OPENGL_ES2) +// NOTE: VAO functionality is exposed through extensions (OES) +static PFNGLGENVERTEXARRAYSOESPROC glGenVertexArrays; +static PFNGLBINDVERTEXARRAYOESPROC glBindVertexArray; +static PFNGLDELETEVERTEXARRAYSOESPROC glDeleteVertexArrays; +//static PFNGLISVERTEXARRAYOESPROC glIsVertexArray; // NOTE: Fails in WebGL, omitted +#endif + +static bool debugMarkerSupported = false; + +// Compressed textures support flags +static bool texCompDXTSupported = false; // DDS texture compression support +static bool texNPOTSupported = false; // NPOT textures full support +static bool texFloatSupported = false; // float textures support (32 bit per channel) + +static int blendMode = 0; // Track current blending mode + +// White texture useful for plain color polys (required by shader) +static unsigned int whiteTexture; + +// Default framebuffer size +static int screenWidth; // Default framebuffer width +static int screenHeight; // Default framebuffer height + +//---------------------------------------------------------------------------------- +// Module specific Functions Declaration +//---------------------------------------------------------------------------------- +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) +static unsigned int CompileShader(const char *shaderStr, int type); // Compile custom shader and return shader id +static unsigned int LoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId); // Load custom shader program + +static Shader LoadShaderDefault(void); // Load default shader (just vertex positioning and texture coloring) +static void SetShaderDefaultLocations(Shader *shader); // Bind default shader locations (attributes and uniforms) +static void UnloadShaderDefault(void); // Unload default shader + +static void LoadBuffersDefault(void); // Load default internal buffers (lines, triangles, quads) +static void UpdateBuffersDefault(void); // Update default internal buffers (VAOs/VBOs) with vertex data +static void DrawBuffersDefault(void); // Draw default internal buffers vertex data +static void UnloadBuffersDefault(void); // Unload default internal buffers vertex data from CPU and GPU + +static void GenDrawCube(void); // Generate and draw cube +static void GenDrawQuad(void); // Generate and draw quad + +#if defined(SUPPORT_VR_SIMULATOR) +static void SetStereoConfig(VrDeviceInfo info); // Configure stereo rendering (including distortion shader) with HMD device parameters +static void SetStereoView(int eye, Matrix matProjection, Matrix matModelView); // Set internal projection and modelview matrix depending on eye +#endif + +#endif // defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + +// Get OpenGL internal formats and data type from raylib PixelFormat +static void GetGlFormats(int format, int *glInternalFormat, int *glFormat, int *glType); + +#if defined(GRAPHICS_API_OPENGL_11) +static int GenerateMipmaps(unsigned char *data, int baseWidth, int baseHeight); +static Color *GenNextMipmap(Color *srcData, int srcWidth, int srcHeight); +#endif + +//---------------------------------------------------------------------------------- +// Module Functions Definition - Matrix operations +//---------------------------------------------------------------------------------- + +#if defined(GRAPHICS_API_OPENGL_11) + +// Fallback to OpenGL 1.1 function calls +//--------------------------------------- +void rlMatrixMode(int mode) +{ + switch (mode) + { + case RL_PROJECTION: glMatrixMode(GL_PROJECTION); break; + case RL_MODELVIEW: glMatrixMode(GL_MODELVIEW); break; + case RL_TEXTURE: glMatrixMode(GL_TEXTURE); break; + default: break; + } +} + +void rlFrustum(double left, double right, double bottom, double top, double zNear, double zFar) +{ + glFrustum(left, right, bottom, top, zNear, zFar); +} + +void rlOrtho(double left, double right, double bottom, double top, double zNear, double zFar) +{ + glOrtho(left, right, bottom, top, zNear, zFar); +} + +void rlPushMatrix(void) { glPushMatrix(); } +void rlPopMatrix(void) { glPopMatrix(); } +void rlLoadIdentity(void) { glLoadIdentity(); } +void rlTranslatef(float x, float y, float z) { glTranslatef(x, y, z); } +void rlRotatef(float angleDeg, float x, float y, float z) { glRotatef(angleDeg, x, y, z); } +void rlScalef(float x, float y, float z) { glScalef(x, y, z); } +void rlMultMatrixf(float *matf) { glMultMatrixf(matf); } + +#elif defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + +// Choose the current matrix to be transformed +void rlMatrixMode(int mode) +{ + if (mode == RL_PROJECTION) currentMatrix = &projection; + else if (mode == RL_MODELVIEW) currentMatrix = &modelview; + //else if (mode == RL_TEXTURE) // Not supported + + currentMatrixMode = mode; +} + +// Push the current matrix to stack +void rlPushMatrix(void) +{ + if (stackCounter == MATRIX_STACK_SIZE - 1) + { + TraceLog(LOG_ERROR, "Stack Buffer Overflow (MAX %i Matrix)", MATRIX_STACK_SIZE); + } + + stack[stackCounter] = *currentMatrix; + rlLoadIdentity(); // TODO: Review matrix stack logic! + stackCounter++; + + if (currentMatrixMode == RL_MODELVIEW) useTempBuffer = true; +} + +// Pop lattest inserted matrix from stack +void rlPopMatrix(void) +{ + if (stackCounter > 0) + { + Matrix mat = stack[stackCounter - 1]; + *currentMatrix = mat; + stackCounter--; + } +} + +// Reset current matrix to identity matrix +void rlLoadIdentity(void) +{ + *currentMatrix = MatrixIdentity(); +} + +// Multiply the current matrix by a translation matrix +void rlTranslatef(float x, float y, float z) +{ + Matrix matTranslation = MatrixTranslate(x, y, z); + + // NOTE: We transpose matrix with multiplication order + *currentMatrix = MatrixMultiply(matTranslation, *currentMatrix); +} + +// Multiply the current matrix by a rotation matrix +void rlRotatef(float angleDeg, float x, float y, float z) +{ + Matrix matRotation = MatrixIdentity(); + + Vector3 axis = (Vector3){ x, y, z }; + matRotation = MatrixRotate(Vector3Normalize(axis), angleDeg*DEG2RAD); + + // NOTE: We transpose matrix with multiplication order + *currentMatrix = MatrixMultiply(matRotation, *currentMatrix); +} + +// Multiply the current matrix by a scaling matrix +void rlScalef(float x, float y, float z) +{ + Matrix matScale = MatrixScale(x, y, z); + + // NOTE: We transpose matrix with multiplication order + *currentMatrix = MatrixMultiply(matScale, *currentMatrix); +} + +// Multiply the current matrix by another matrix +void rlMultMatrixf(float *matf) +{ + // Matrix creation from array + Matrix mat = { matf[0], matf[4], matf[8], matf[12], + matf[1], matf[5], matf[9], matf[13], + matf[2], matf[6], matf[10], matf[14], + matf[3], matf[7], matf[11], matf[15] }; + + *currentMatrix = MatrixMultiply(*currentMatrix, mat); +} + +// Multiply the current matrix by a perspective matrix generated by parameters +void rlFrustum(double left, double right, double bottom, double top, double near, double far) +{ + Matrix matPerps = MatrixFrustum(left, right, bottom, top, near, far); + + *currentMatrix = MatrixMultiply(*currentMatrix, matPerps); +} + +// Multiply the current matrix by an orthographic matrix generated by parameters +void rlOrtho(double left, double right, double bottom, double top, double near, double far) +{ + Matrix matOrtho = MatrixOrtho(left, right, bottom, top, near, far); + + *currentMatrix = MatrixMultiply(*currentMatrix, matOrtho); +} + +#endif + +// Set the viewport area (transformation from normalized device coordinates to window coordinates) +// NOTE: Updates global variables: screenWidth, screenHeight +void rlViewport(int x, int y, int width, int height) +{ + glViewport(x, y, width, height); +} + +//---------------------------------------------------------------------------------- +// Module Functions Definition - Vertex level operations +//---------------------------------------------------------------------------------- +#if defined(GRAPHICS_API_OPENGL_11) + +// Fallback to OpenGL 1.1 function calls +//--------------------------------------- +void rlBegin(int mode) +{ + switch (mode) + { + case RL_LINES: glBegin(GL_LINES); break; + case RL_TRIANGLES: glBegin(GL_TRIANGLES); break; + case RL_QUADS: glBegin(GL_QUADS); break; + default: break; + } +} + +void rlEnd() { glEnd(); } +void rlVertex2i(int x, int y) { glVertex2i(x, y); } +void rlVertex2f(float x, float y) { glVertex2f(x, y); } +void rlVertex3f(float x, float y, float z) { glVertex3f(x, y, z); } +void rlTexCoord2f(float x, float y) { glTexCoord2f(x, y); } +void rlNormal3f(float x, float y, float z) { glNormal3f(x, y, z); } +void rlColor4ub(byte r, byte g, byte b, byte a) { glColor4ub(r, g, b, a); } +void rlColor3f(float x, float y, float z) { glColor3f(x, y, z); } +void rlColor4f(float x, float y, float z, float w) { glColor4f(x, y, z, w); } + +#elif defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + +// Initialize drawing mode (how to organize vertex) +void rlBegin(int mode) +{ + // Draw mode can only be RL_LINES, RL_TRIANGLES and RL_QUADS + currentDrawMode = mode; +} + +// Finish vertex providing +void rlEnd(void) +{ + if (useTempBuffer) + { + // NOTE: In this case, *currentMatrix is already transposed because transposing has been applied + // independently to translation-scale-rotation matrices -> t(M1 x M2) = t(M2) x t(M1) + // This way, rlTranslatef(), rlRotatef()... behaviour is the same than OpenGL 1.1 + + // Apply transformation matrix to all temp vertices + for (int i = 0; i < tempBufferCount; i++) tempBuffer[i] = Vector3Transform(tempBuffer[i], *currentMatrix); + + // Deactivate tempBuffer usage to allow rlVertex3f do its job + useTempBuffer = false; + + // Copy all transformed vertices to right VAO + for (int i = 0; i < tempBufferCount; i++) rlVertex3f(tempBuffer[i].x, tempBuffer[i].y, tempBuffer[i].z); + + // Reset temp buffer + tempBufferCount = 0; + } + + // Make sure vertexCount is the same for vertices-texcoords-normals-colors + // NOTE: In OpenGL 1.1, one glColor call can be made for all the subsequent glVertex calls. + switch (currentDrawMode) + { + case RL_LINES: + { + if (lines.vCounter != lines.cCounter) + { + int addColors = lines.vCounter - lines.cCounter; + + for (int i = 0; i < addColors; i++) + { + lines.colors[4*lines.cCounter] = lines.colors[4*lines.cCounter - 4]; + lines.colors[4*lines.cCounter + 1] = lines.colors[4*lines.cCounter - 3]; + lines.colors[4*lines.cCounter + 2] = lines.colors[4*lines.cCounter - 2]; + lines.colors[4*lines.cCounter + 3] = lines.colors[4*lines.cCounter - 1]; + + lines.cCounter++; + } + } + } break; + case RL_TRIANGLES: + { + if (triangles.vCounter != triangles.cCounter) + { + int addColors = triangles.vCounter - triangles.cCounter; + + for (int i = 0; i < addColors; i++) + { + triangles.colors[4*triangles.cCounter] = triangles.colors[4*triangles.cCounter - 4]; + triangles.colors[4*triangles.cCounter + 1] = triangles.colors[4*triangles.cCounter - 3]; + triangles.colors[4*triangles.cCounter + 2] = triangles.colors[4*triangles.cCounter - 2]; + triangles.colors[4*triangles.cCounter + 3] = triangles.colors[4*triangles.cCounter - 1]; + + triangles.cCounter++; + } + } + } break; + case RL_QUADS: + { + // Make sure colors count match vertex count + if (quads.vCounter != quads.cCounter) + { + int addColors = quads.vCounter - quads.cCounter; + + for (int i = 0; i < addColors; i++) + { + quads.colors[4*quads.cCounter] = quads.colors[4*quads.cCounter - 4]; + quads.colors[4*quads.cCounter + 1] = quads.colors[4*quads.cCounter - 3]; + quads.colors[4*quads.cCounter + 2] = quads.colors[4*quads.cCounter - 2]; + quads.colors[4*quads.cCounter + 3] = quads.colors[4*quads.cCounter - 1]; + + quads.cCounter++; + } + } + + // Make sure texcoords count match vertex count + if (quads.vCounter != quads.tcCounter) + { + int addTexCoords = quads.vCounter - quads.tcCounter; + + for (int i = 0; i < addTexCoords; i++) + { + quads.texcoords[2*quads.tcCounter] = 0.0f; + quads.texcoords[2*quads.tcCounter + 1] = 0.0f; + + quads.tcCounter++; + } + } + + // TODO: Make sure normals count match vertex count... if normals support is added in a future... :P + + } break; + default: break; + } + + // NOTE: Depth increment is dependant on rlOrtho(): z-near and z-far values, + // as well as depth buffer bit-depth (16bit or 24bit or 32bit) + // Correct increment formula would be: depthInc = (zfar - znear)/pow(2, bits) + currentDepth += (1.0f/20000.0f); + + // Verify internal buffers limits + // NOTE: This check is combined with usage of rlCheckBufferLimit() + if ((lines.vCounter/2 >= MAX_LINES_BATCH - 2) || + (triangles.vCounter/3 >= MAX_TRIANGLES_BATCH - 3) || + (quads.vCounter/4 >= MAX_QUADS_BATCH - 4)) rlglDraw(); +} + +// Define one vertex (position) +void rlVertex3f(float x, float y, float z) +{ + if (useTempBuffer) + { + tempBuffer[tempBufferCount].x = x; + tempBuffer[tempBufferCount].y = y; + tempBuffer[tempBufferCount].z = z; + tempBufferCount++; + } + else + { + switch (currentDrawMode) + { + case RL_LINES: + { + // Verify that MAX_LINES_BATCH limit not reached + if (lines.vCounter/2 < MAX_LINES_BATCH) + { + lines.vertices[3*lines.vCounter] = x; + lines.vertices[3*lines.vCounter + 1] = y; + lines.vertices[3*lines.vCounter + 2] = z; + + lines.vCounter++; + } + else TraceLog(LOG_ERROR, "MAX_LINES_BATCH overflow"); + + } break; + case RL_TRIANGLES: + { + // Verify that MAX_TRIANGLES_BATCH limit not reached + if (triangles.vCounter/3 < MAX_TRIANGLES_BATCH) + { + triangles.vertices[3*triangles.vCounter] = x; + triangles.vertices[3*triangles.vCounter + 1] = y; + triangles.vertices[3*triangles.vCounter + 2] = z; + + triangles.vCounter++; + } + else TraceLog(LOG_ERROR, "MAX_TRIANGLES_BATCH overflow"); + + } break; + case RL_QUADS: + { + // Verify that MAX_QUADS_BATCH limit not reached + if (quads.vCounter/4 < MAX_QUADS_BATCH) + { + quads.vertices[3*quads.vCounter] = x; + quads.vertices[3*quads.vCounter + 1] = y; + quads.vertices[3*quads.vCounter + 2] = z; + + quads.vCounter++; + + draws[drawsCounter - 1].vertexCount++; + } + else TraceLog(LOG_ERROR, "MAX_QUADS_BATCH overflow"); + + } break; + default: break; + } + } +} + +// Define one vertex (position) +void rlVertex2f(float x, float y) +{ + rlVertex3f(x, y, currentDepth); +} + +// Define one vertex (position) +void rlVertex2i(int x, int y) +{ + rlVertex3f((float)x, (float)y, currentDepth); +} + +// Define one vertex (texture coordinate) +// NOTE: Texture coordinates are limited to QUADS only +void rlTexCoord2f(float x, float y) +{ + if (currentDrawMode == RL_QUADS) + { + quads.texcoords[2*quads.tcCounter] = x; + quads.texcoords[2*quads.tcCounter + 1] = y; + + quads.tcCounter++; + } +} + +// Define one vertex (normal) +// NOTE: Normals limited to TRIANGLES only ? +void rlNormal3f(float x, float y, float z) +{ + // TODO: Normals usage... +} + +// Define one vertex (color) +void rlColor4ub(byte x, byte y, byte z, byte w) +{ + switch (currentDrawMode) + { + case RL_LINES: + { + lines.colors[4*lines.cCounter] = x; + lines.colors[4*lines.cCounter + 1] = y; + lines.colors[4*lines.cCounter + 2] = z; + lines.colors[4*lines.cCounter + 3] = w; + + lines.cCounter++; + + } break; + case RL_TRIANGLES: + { + triangles.colors[4*triangles.cCounter] = x; + triangles.colors[4*triangles.cCounter + 1] = y; + triangles.colors[4*triangles.cCounter + 2] = z; + triangles.colors[4*triangles.cCounter + 3] = w; + + triangles.cCounter++; + + } break; + case RL_QUADS: + { + quads.colors[4*quads.cCounter] = x; + quads.colors[4*quads.cCounter + 1] = y; + quads.colors[4*quads.cCounter + 2] = z; + quads.colors[4*quads.cCounter + 3] = w; + + quads.cCounter++; + + } break; + default: break; + } +} + +// Define one vertex (color) +void rlColor4f(float r, float g, float b, float a) +{ + rlColor4ub((byte)(r*255), (byte)(g*255), (byte)(b*255), (byte)(a*255)); +} + +// Define one vertex (color) +void rlColor3f(float x, float y, float z) +{ + rlColor4ub((byte)(x*255), (byte)(y*255), (byte)(z*255), 255); +} + +#endif + +//---------------------------------------------------------------------------------- +// Module Functions Definition - OpenGL equivalent functions (common to 1.1, 3.3+, ES2) +//---------------------------------------------------------------------------------- + +// Enable texture usage +void rlEnableTexture(unsigned int id) +{ +#if defined(GRAPHICS_API_OPENGL_11) + glEnable(GL_TEXTURE_2D); + glBindTexture(GL_TEXTURE_2D, id); +#endif + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + if (draws[drawsCounter - 1].textureId != id) + { + if (draws[drawsCounter - 1].vertexCount > 0) drawsCounter++; + + if (drawsCounter >= MAX_DRAWS_BY_TEXTURE) + { + rlglDraw(); + drawsCounter = 1; + } + + draws[drawsCounter - 1].textureId = id; + draws[drawsCounter - 1].vertexCount = 0; + } +#endif +} + +// Disable texture usage +void rlDisableTexture(void) +{ +#if defined(GRAPHICS_API_OPENGL_11) + glDisable(GL_TEXTURE_2D); + glBindTexture(GL_TEXTURE_2D, 0); +#else + // NOTE: If quads batch limit is reached, + // we force a draw call and next batch starts + if (quads.vCounter/4 >= MAX_QUADS_BATCH) rlglDraw(); +#endif +} + +// Set texture parameters (wrap mode/filter mode) +void rlTextureParameters(unsigned int id, int param, int value) +{ + glBindTexture(GL_TEXTURE_2D, id); + + switch (param) + { + case RL_TEXTURE_WRAP_S: + case RL_TEXTURE_WRAP_T: + { + if ((value == RL_WRAP_CLAMP_MIRROR) && !texClampMirrorSupported) TraceLog(LOG_WARNING, "Clamp mirror wrap mode not supported"); + else glTexParameteri(GL_TEXTURE_2D, param, value); + } break; + case RL_TEXTURE_MAG_FILTER: + case RL_TEXTURE_MIN_FILTER: glTexParameteri(GL_TEXTURE_2D, param, value); break; + case RL_TEXTURE_ANISOTROPIC_FILTER: + { + if (value <= maxAnisotropicLevel) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (float)value); + else if (maxAnisotropicLevel > 0.0f) + { + TraceLog(LOG_WARNING, "[TEX ID %i] Maximum anisotropic filter level supported is %iX", id, maxAnisotropicLevel); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (float)value); + } + else TraceLog(LOG_WARNING, "Anisotropic filtering not supported"); + } break; + default: break; + } + + glBindTexture(GL_TEXTURE_2D, 0); +} + +// Enable rendering to texture (fbo) +void rlEnableRenderTexture(unsigned int id) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + glBindFramebuffer(GL_FRAMEBUFFER, id); + + //glDisable(GL_CULL_FACE); // Allow double side drawing for texture flipping + //glCullFace(GL_FRONT); +#endif +} + +// Disable rendering to texture +void rlDisableRenderTexture(void) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + glBindFramebuffer(GL_FRAMEBUFFER, 0); + + //glEnable(GL_CULL_FACE); + //glCullFace(GL_BACK); +#endif +} + +// Enable depth test +void rlEnableDepthTest(void) +{ + glEnable(GL_DEPTH_TEST); +} + +// Disable depth test +void rlDisableDepthTest(void) +{ + glDisable(GL_DEPTH_TEST); +} + +// Enable wire mode +void rlEnableWireMode(void) +{ +#if defined (GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) + // NOTE: glPolygonMode() not available on OpenGL ES + glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); +#endif +} + +// Disable wire mode +void rlDisableWireMode(void) +{ +#if defined (GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) + // NOTE: glPolygonMode() not available on OpenGL ES + glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); +#endif +} + +// Unload texture from GPU memory +void rlDeleteTextures(unsigned int id) +{ + if (id > 0) glDeleteTextures(1, &id); +} + +// Unload render texture from GPU memory +void rlDeleteRenderTextures(RenderTexture2D target) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + if (target.id > 0) glDeleteFramebuffers(1, &target.id); + if (target.texture.id > 0) glDeleteTextures(1, &target.texture.id); + if (target.depth.id > 0) glDeleteTextures(1, &target.depth.id); + + TraceLog(LOG_INFO, "[FBO ID %i] Unloaded render texture data from VRAM (GPU)", target.id); +#endif +} + +// Unload shader from GPU memory +void rlDeleteShader(unsigned int id) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + if (id != 0) glDeleteProgram(id); +#endif +} + +// Unload vertex data (VAO) from GPU memory +void rlDeleteVertexArrays(unsigned int id) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + if (vaoSupported) + { + if (id != 0) glDeleteVertexArrays(1, &id); + TraceLog(LOG_INFO, "[VAO ID %i] Unloaded model data from VRAM (GPU)", id); + } +#endif +} + +// Unload vertex data (VBO) from GPU memory +void rlDeleteBuffers(unsigned int id) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + if (id != 0) + { + glDeleteBuffers(1, &id); + if (!vaoSupported) TraceLog(LOG_INFO, "[VBO ID %i] Unloaded model vertex data from VRAM (GPU)", id); + } +#endif +} + +// Clear color buffer with color +void rlClearColor(byte r, byte g, byte b, byte a) +{ + // Color values clamp to 0.0f(0) and 1.0f(255) + float cr = (float)r/255; + float cg = (float)g/255; + float cb = (float)b/255; + float ca = (float)a/255; + + glClearColor(cr, cg, cb, ca); +} + +// Clear used screen buffers (color and depth) +void rlClearScreenBuffers(void) +{ + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear used buffers: Color and Depth (Depth is used for 3D) + //glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); // Stencil buffer not used... +} + +//---------------------------------------------------------------------------------- +// Module Functions Definition - rlgl Functions +//---------------------------------------------------------------------------------- + +// Initialize rlgl: OpenGL extensions, default buffers/shaders/textures, OpenGL states +void rlglInit(int width, int height) +{ + // Check OpenGL information and capabilities + //------------------------------------------------------------------------------ + + // Print current OpenGL and GLSL version + TraceLog(LOG_INFO, "GPU: Vendor: %s", glGetString(GL_VENDOR)); + TraceLog(LOG_INFO, "GPU: Renderer: %s", glGetString(GL_RENDERER)); + TraceLog(LOG_INFO, "GPU: Version: %s", glGetString(GL_VERSION)); + TraceLog(LOG_INFO, "GPU: GLSL: %s", glGetString(GL_SHADING_LANGUAGE_VERSION)); + + // NOTE: We can get a bunch of extra information about GPU capabilities (glGet*) + //int maxTexSize; + //glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTexSize); + //TraceLog(LOG_INFO, "GL_MAX_TEXTURE_SIZE: %i", maxTexSize); + + //GL_MAX_TEXTURE_IMAGE_UNITS + //GL_MAX_VIEWPORT_DIMS + + //int numAuxBuffers; + //glGetIntegerv(GL_AUX_BUFFERS, &numAuxBuffers); + //TraceLog(LOG_INFO, "GL_AUX_BUFFERS: %i", numAuxBuffers); + + //GLint numComp = 0; + //GLint format[32] = { 0 }; + //glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numComp); + //glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, format); + //for (int i = 0; i < numComp; i++) TraceLog(LOG_INFO, "Supported compressed format: 0x%x", format[i]); + + // NOTE: We don't need that much data on screen... right now... + +#if defined(GRAPHICS_API_OPENGL_11) + //TraceLog(LOG_INFO, "OpenGL 1.1 (or driver default) profile initialized"); +#endif + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + // Get supported extensions list + GLint numExt = 0; + +#if defined(GRAPHICS_API_OPENGL_33) + + // NOTE: On OpenGL 3.3 VAO and NPOT are supported by default + vaoSupported = true; + texNPOTSupported = true; + texFloatSupported = true; + + // We get a list of available extensions and we check for some of them (compressed textures) + // NOTE: We don't need to check again supported extensions but we do (GLAD already dealt with that) + glGetIntegerv(GL_NUM_EXTENSIONS, &numExt); + +#ifdef _MSC_VER + const char **extList = malloc(sizeof(const char *)*numExt); +#else + const char *extList[numExt]; +#endif + + for (int i = 0; i < numExt; i++) extList[i] = (char *)glGetStringi(GL_EXTENSIONS, i); + +#elif defined(GRAPHICS_API_OPENGL_ES2) + char *extensions = (char *)glGetString(GL_EXTENSIONS); // One big const string + + // NOTE: We have to duplicate string because glGetString() returns a const value + // If not duplicated, it fails in some systems (Raspberry Pi) + // Equivalent to function: char *strdup(const char *str) + char *extensionsDup; + size_t len = strlen(extensions) + 1; + void *newstr = malloc(len); + if (newstr == NULL) extensionsDup = NULL; + extensionsDup = (char *)memcpy(newstr, extensions, len); + + // NOTE: String could be splitted using strtok() function (string.h) + // NOTE: strtok() modifies the received string, it can not be const + + char *extList[512]; // Allocate 512 strings pointers (2 KB) + + extList[numExt] = strtok(extensionsDup, " "); + + while (extList[numExt] != NULL) + { + numExt++; + extList[numExt] = strtok(NULL, " "); + } + + free(extensionsDup); // Duplicated string must be deallocated + + numExt -= 1; +#endif + + TraceLog(LOG_INFO, "Number of supported extensions: %i", numExt); + + // Show supported extensions + //for (int i = 0; i < numExt; i++) TraceLog(LOG_INFO, "Supported extension: %s", extList[i]); + + // Check required extensions + for (int i = 0; i < numExt; i++) + { +#if defined(GRAPHICS_API_OPENGL_ES2) + // Check VAO support + // NOTE: Only check on OpenGL ES, OpenGL 3.3 has VAO support as core feature + if (strcmp(extList[i], (const char *)"GL_OES_vertex_array_object") == 0) + { + vaoSupported = true; + + // The extension is supported by our hardware and driver, try to get related functions pointers + // NOTE: emscripten does not support VAOs natively, it uses emulation and it reduces overall performance... + glGenVertexArrays = (PFNGLGENVERTEXARRAYSOESPROC)eglGetProcAddress("glGenVertexArraysOES"); + glBindVertexArray = (PFNGLBINDVERTEXARRAYOESPROC)eglGetProcAddress("glBindVertexArrayOES"); + glDeleteVertexArrays = (PFNGLDELETEVERTEXARRAYSOESPROC)eglGetProcAddress("glDeleteVertexArraysOES"); + //glIsVertexArray = (PFNGLISVERTEXARRAYOESPROC)eglGetProcAddress("glIsVertexArrayOES"); // NOTE: Fails in WebGL, omitted + } + + // Check NPOT textures support + // NOTE: Only check on OpenGL ES, OpenGL 3.3 has NPOT textures full support as core feature + if (strcmp(extList[i], (const char *)"GL_OES_texture_npot") == 0) texNPOTSupported = true; + + // Check texture float support + if (strcmp(extList[i], (const char *)"GL_OES_texture_float") == 0) texFloatSupported = true; +#endif + + // DDS texture compression support + if ((strcmp(extList[i], (const char *)"GL_EXT_texture_compression_s3tc") == 0) || + (strcmp(extList[i], (const char *)"GL_WEBGL_compressed_texture_s3tc") == 0) || + (strcmp(extList[i], (const char *)"GL_WEBKIT_WEBGL_compressed_texture_s3tc") == 0)) texCompDXTSupported = true; + + // ETC1 texture compression support + if ((strcmp(extList[i], (const char *)"GL_OES_compressed_ETC1_RGB8_texture") == 0) || + (strcmp(extList[i], (const char *)"GL_WEBGL_compressed_texture_etc1") == 0)) texCompETC1Supported = true; + + // ETC2/EAC texture compression support + if (strcmp(extList[i], (const char *)"GL_ARB_ES3_compatibility") == 0) texCompETC2Supported = true; + + // PVR texture compression support + if (strcmp(extList[i], (const char *)"GL_IMG_texture_compression_pvrtc") == 0) texCompPVRTSupported = true; + + // ASTC texture compression support + if (strcmp(extList[i], (const char *)"GL_KHR_texture_compression_astc_hdr") == 0) texCompASTCSupported = true; + + // Anisotropic texture filter support + if (strcmp(extList[i], (const char *)"GL_EXT_texture_filter_anisotropic") == 0) + { + texAnisotropicFilterSupported = true; + glGetFloatv(0x84FF, &maxAnisotropicLevel); // GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT + } + + // Clamp mirror wrap mode supported + if (strcmp(extList[i], (const char *)"GL_EXT_texture_mirror_clamp") == 0) texClampMirrorSupported = true; + + // Debug marker support + if(strcmp(extList[i], (const char *)"GL_EXT_debug_marker") == 0) debugMarkerSupported = true; + } + +#if defined(_MSC_VER) + //free(extList); +#endif + +#if defined(GRAPHICS_API_OPENGL_ES2) + if (vaoSupported) TraceLog(LOG_INFO, "[EXTENSION] VAO extension detected, VAO functions initialized successfully"); + else TraceLog(LOG_WARNING, "[EXTENSION] VAO extension not found, VAO usage not supported"); + + if (texNPOTSupported) TraceLog(LOG_INFO, "[EXTENSION] NPOT textures extension detected, full NPOT textures supported"); + else TraceLog(LOG_WARNING, "[EXTENSION] NPOT textures extension not found, limited NPOT support (no-mipmaps, no-repeat)"); +#endif + + if (texCompDXTSupported) TraceLog(LOG_INFO, "[EXTENSION] DXT compressed textures supported"); + if (texCompETC1Supported) TraceLog(LOG_INFO, "[EXTENSION] ETC1 compressed textures supported"); + if (texCompETC2Supported) TraceLog(LOG_INFO, "[EXTENSION] ETC2/EAC compressed textures supported"); + if (texCompPVRTSupported) TraceLog(LOG_INFO, "[EXTENSION] PVRT compressed textures supported"); + if (texCompASTCSupported) TraceLog(LOG_INFO, "[EXTENSION] ASTC compressed textures supported"); + + if (texAnisotropicFilterSupported) TraceLog(LOG_INFO, "[EXTENSION] Anisotropic textures filtering supported (max: %.0fX)", maxAnisotropicLevel); + if (texClampMirrorSupported) TraceLog(LOG_INFO, "[EXTENSION] Clamp mirror wrap texture mode supported"); + + if (debugMarkerSupported) TraceLog(LOG_INFO, "[EXTENSION] Debug Marker supported"); + + // Initialize buffers, default shaders and default textures + //---------------------------------------------------------- + + // Init default white texture + unsigned char pixels[4] = { 255, 255, 255, 255 }; // 1 pixel RGBA (4 bytes) + + whiteTexture = rlLoadTexture(pixels, 1, 1, UNCOMPRESSED_R8G8B8A8, 1); + + if (whiteTexture != 0) TraceLog(LOG_INFO, "[TEX ID %i] Base white texture loaded successfully", whiteTexture); + else TraceLog(LOG_WARNING, "Base white texture could not be loaded"); + + // Init default Shader (customized for GL 3.3 and ES2) + defaultShader = LoadShaderDefault(); + currentShader = defaultShader; + + // Init default vertex arrays buffers (lines, triangles, quads) + LoadBuffersDefault(); + + // Init temp vertex buffer, used when transformation required (translate, rotate, scale) + tempBuffer = (Vector3 *)malloc(sizeof(Vector3)*TEMP_VERTEX_BUFFER_SIZE); + + for (int i = 0; i < TEMP_VERTEX_BUFFER_SIZE; i++) tempBuffer[i] = Vector3Zero(); + + // Init draw calls tracking system + draws = (DrawCall *)malloc(sizeof(DrawCall)*MAX_DRAWS_BY_TEXTURE); + + for (int i = 0; i < MAX_DRAWS_BY_TEXTURE; i++) + { + draws[i].textureId = 0; + draws[i].vertexCount = 0; + } + + drawsCounter = 1; + draws[drawsCounter - 1].textureId = whiteTexture; + currentDrawMode = RL_TRIANGLES; // Set default draw mode + + // Init internal matrix stack (emulating OpenGL 1.1) + for (int i = 0; i < MATRIX_STACK_SIZE; i++) stack[i] = MatrixIdentity(); + + // Init internal projection and modelview matrices + projection = MatrixIdentity(); + modelview = MatrixIdentity(); + currentMatrix = &modelview; +#endif // defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + + // Initialize OpenGL default states + //---------------------------------------------------------- + + // Init state: Depth test + glDepthFunc(GL_LEQUAL); // Type of depth testing to apply + glDisable(GL_DEPTH_TEST); // Disable depth testing for 2D (only used for 3D) + + // Init state: Blending mode + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); // Color blending function (how colors are mixed) + glEnable(GL_BLEND); // Enable color blending (required to work with transparencies) + + // Init state: Culling + // NOTE: All shapes/models triangles are drawn CCW + glCullFace(GL_BACK); // Cull the back face (default) + glFrontFace(GL_CCW); // Front face are defined counter clockwise (default) + glEnable(GL_CULL_FACE); // Enable backface culling + +#if defined(GRAPHICS_API_OPENGL_11) + // Init state: Color hints (deprecated in OpenGL 3.0+) + glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Improve quality of color and texture coordinate interpolation + glShadeModel(GL_SMOOTH); // Smooth shading between vertex (vertex colors interpolation) +#endif + + // Init state: Color/Depth buffers clear + glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Set clear color (black) + glClearDepth(1.0f); // Set clear depth value (default) + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear color and depth buffers (depth buffer required for 3D) + + // Store screen size into global variables + screenWidth = width; + screenHeight = height; + + TraceLog(LOG_INFO, "OpenGL default states initialized successfully"); +} + +// Vertex Buffer Object deinitialization (memory free) +void rlglClose(void) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + UnloadShaderDefault(); // Unload default shader + UnloadBuffersDefault(); // Unload default buffers (lines, triangles, quads) + glDeleteTextures(1, &whiteTexture); // Unload default texture + + TraceLog(LOG_INFO, "[TEX ID %i] Unloaded texture data (base white texture) from VRAM", whiteTexture); + + free(draws); +#endif +} + +// Drawing batches: triangles, quads, lines +void rlglDraw(void) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + // NOTE: In a future version, models could be stored in a stack... + //for (int i = 0; i < modelsCount; i++) rlDrawMesh(models[i]->mesh, models[i]->material, models[i]->transform); + + // NOTE: Default buffers upload and draw + UpdateBuffersDefault(); + DrawBuffersDefault(); // NOTE: Stereo rendering is checked inside +#endif +} + +// Returns current OpenGL version +int rlGetVersion(void) +{ +#if defined(GRAPHICS_API_OPENGL_11) + return OPENGL_11; +#elif defined(GRAPHICS_API_OPENGL_21) + #if defined(__APPLE__) + return OPENGL_33; // NOTE: Force OpenGL 3.3 on OSX + #else + return OPENGL_21; + #endif +#elif defined(GRAPHICS_API_OPENGL_33) + return OPENGL_33; +#elif defined(GRAPHICS_API_OPENGL_ES2) + return OPENGL_ES_20; +#endif +} + +// Check internal buffer overflow for a given number of vertex +bool rlCheckBufferLimit(int type, int vCount) +{ + bool overflow = false; +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + switch (type) + { + case RL_LINES: overflow = ((lines.vCounter + vCount)/2 >= MAX_LINES_BATCH); break; + case RL_TRIANGLES: overflow = ((triangles.vCounter + vCount)/3 >= MAX_TRIANGLES_BATCH); break; + case RL_QUADS: overflow = ((quads.vCounter + vCount)/4 >= MAX_QUADS_BATCH); break; + default: break; + } +#endif + return overflow; +} + +// Set debug marker +void rlSetDebugMarker(const char *text) +{ +#if defined(GRAPHICS_API_OPENGL_33) + if (debugMarkerSupported) glInsertEventMarkerEXT(0, text); +#endif +} + +// Load OpenGL extensions +// NOTE: External loader function could be passed as a pointer +void rlLoadExtensions(void *loader) +{ +#if defined(GRAPHICS_API_OPENGL_33) + // NOTE: glad is generated and contains only required OpenGL 3.3 Core extensions (and lower versions) + #if !defined(__APPLE__) + if (!gladLoadGLLoader((GLADloadproc)loader)) TraceLog(LOG_WARNING, "GLAD: Cannot load OpenGL extensions"); + else TraceLog(LOG_INFO, "GLAD: OpenGL extensions loaded successfully"); + + #if defined(GRAPHICS_API_OPENGL_21) + if (GLAD_GL_VERSION_2_1) TraceLog(LOG_INFO, "OpenGL 2.1 profile supported"); + #elif defined(GRAPHICS_API_OPENGL_33) + if(GLAD_GL_VERSION_3_3) TraceLog(LOG_INFO, "OpenGL 3.3 Core profile supported"); + else TraceLog(LOG_ERROR, "OpenGL 3.3 Core profile not supported"); + #endif + #endif + + // With GLAD, we can check if an extension is supported using the GLAD_GL_xxx booleans + //if (GLAD_GL_ARB_vertex_array_object) // Use GL_ARB_vertex_array_object +#endif +} + +// Get world coordinates from screen coordinates +Vector3 rlUnproject(Vector3 source, Matrix proj, Matrix view) +{ + Vector3 result = { 0.0f, 0.0f, 0.0f }; + + // Calculate unproject matrix (multiply view patrix by projection matrix) and invert it + Matrix matViewProj = MatrixMultiply(view, proj); + matViewProj = MatrixInvert(matViewProj); + + // Create quaternion from source point + Quaternion quat = { source.x, source.y, source.z, 1.0f }; + + // Multiply quat point by unproject matrix + quat = QuaternionTransform(quat, matViewProj); + + // Normalized world points in vectors + result.x = quat.x/quat.w; + result.y = quat.y/quat.w; + result.z = quat.z/quat.w; + + return result; +} + +// Convert image data to OpenGL texture (returns OpenGL valid Id) +unsigned int rlLoadTexture(void *data, int width, int height, int format, int mipmapCount) +{ + glBindTexture(GL_TEXTURE_2D, 0); // Free any old binding + + GLuint id = 0; + + // Check texture format support by OpenGL 1.1 (compressed textures not supported) +#if defined(GRAPHICS_API_OPENGL_11) + if (format >= COMPRESSED_DXT1_RGB) + { + TraceLog(LOG_WARNING, "OpenGL 1.1 does not support GPU compressed texture formats"); + return id; + } +#endif + + if ((!texCompDXTSupported) && ((format == COMPRESSED_DXT1_RGB) || (format == COMPRESSED_DXT1_RGBA) || + (format == COMPRESSED_DXT3_RGBA) || (format == COMPRESSED_DXT5_RGBA))) + { + TraceLog(LOG_WARNING, "DXT compressed texture format not supported"); + return id; + } +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + if ((!texCompETC1Supported) && (format == COMPRESSED_ETC1_RGB)) + { + TraceLog(LOG_WARNING, "ETC1 compressed texture format not supported"); + return id; + } + + if ((!texCompETC2Supported) && ((format == COMPRESSED_ETC2_RGB) || (format == COMPRESSED_ETC2_EAC_RGBA))) + { + TraceLog(LOG_WARNING, "ETC2 compressed texture format not supported"); + return id; + } + + if ((!texCompPVRTSupported) && ((format == COMPRESSED_PVRT_RGB) || (format == COMPRESSED_PVRT_RGBA))) + { + TraceLog(LOG_WARNING, "PVRT compressed texture format not supported"); + return id; + } + + if ((!texCompASTCSupported) && ((format == COMPRESSED_ASTC_4x4_RGBA) || (format == COMPRESSED_ASTC_8x8_RGBA))) + { + TraceLog(LOG_WARNING, "ASTC compressed texture format not supported"); + return id; + } +#endif + + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + + glGenTextures(1, &id); // Generate Pointer to the texture + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + //glActiveTexture(GL_TEXTURE0); // If not defined, using GL_TEXTURE0 by default (shader texture) +#endif + + glBindTexture(GL_TEXTURE_2D, id); + + int mipWidth = width; + int mipHeight = height; + int mipOffset = 0; // Mipmap data offset + + TraceLog(LOG_DEBUG, "Load texture from data memory address: 0x%x", data); + + // Load the different mipmap levels + for (int i = 0; i < mipmapCount; i++) + { + unsigned int mipSize = GetPixelDataSize(mipWidth, mipHeight, format); + + int glInternalFormat, glFormat, glType; + GetGlFormats(format, &glInternalFormat, &glFormat, &glType); + + TraceLog(LOG_DEBUG, "Load mipmap level %i (%i x %i), size: %i, offset: %i", i, mipWidth, mipHeight, mipSize, mipOffset); + + if (glInternalFormat != -1) + { + if (format < COMPRESSED_DXT1_RGB) glTexImage2D(GL_TEXTURE_2D, i, glInternalFormat, mipWidth, mipHeight, 0, glFormat, glType, (unsigned char *)data + mipOffset); + #if !defined(GRAPHICS_API_OPENGL_11) + else glCompressedTexImage2D(GL_TEXTURE_2D, i, glInternalFormat, mipWidth, mipHeight, 0, mipSize, (unsigned char *)data + mipOffset); + #endif + + #if defined(GRAPHICS_API_OPENGL_33) + if (format == UNCOMPRESSED_GRAYSCALE) + { + GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_ONE }; + glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask); + } + else if (format == UNCOMPRESSED_GRAY_ALPHA) + { + #if defined(GRAPHICS_API_OPENGL_21) + GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_ALPHA }; + #elif defined(GRAPHICS_API_OPENGL_33) + GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_GREEN }; + #endif + glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask); + } + #endif + } + + mipWidth /= 2; + mipHeight /= 2; + mipOffset += mipSize; + + // Security check for NPOT textures + if (mipWidth < 1) mipWidth = 1; + if (mipHeight < 1) mipHeight = 1; + } + + // Texture parameters configuration + // NOTE: glTexParameteri does NOT affect texture uploading, just the way it's used +#if defined(GRAPHICS_API_OPENGL_ES2) + // NOTE: OpenGL ES 2.0 with no GL_OES_texture_npot support (i.e. WebGL) has limited NPOT support, so CLAMP_TO_EDGE must be used + if (texNPOTSupported) + { + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); // Set texture to repeat on x-axis + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); // Set texture to repeat on y-axis + } + else + { + // NOTE: If using negative texture coordinates (LoadOBJ()), it does not work! + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); // Set texture to clamp on x-axis + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); // Set texture to clamp on y-axis + } +#else + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); // Set texture to repeat on x-axis + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); // Set texture to repeat on y-axis +#endif + + // Magnification and minification filters + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); // Alternative: GL_LINEAR + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); // Alternative: GL_LINEAR + +#if defined(GRAPHICS_API_OPENGL_33) + if (mipmapCount > 1) + { + // Activate Trilinear filtering if mipmaps are available + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); + } +#endif + + // At this point we have the texture loaded in GPU and texture parameters configured + + // NOTE: If mipmaps were not in data, they are not generated automatically + + // Unbind current texture + glBindTexture(GL_TEXTURE_2D, 0); + + if (id > 0) TraceLog(LOG_INFO, "[TEX ID %i] Texture created successfully (%ix%i - %i mipmaps)", id, width, height, mipmapCount); + else TraceLog(LOG_WARNING, "Texture could not be created"); + + return id; +} + +// Update already loaded texture in GPU with new data +void rlUpdateTexture(unsigned int id, int width, int height, int format, const void *data) +{ + glBindTexture(GL_TEXTURE_2D, id); + + int glInternalFormat, glFormat, glType; + GetGlFormats(format, &glInternalFormat, &glFormat, &glType); + + if ((glInternalFormat != -1) && (format < COMPRESSED_DXT1_RGB)) + { + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, glFormat, glType, (unsigned char *)data); + } + else TraceLog(LOG_WARNING, "Texture format updating not supported"); +} + +// Unload texture from GPU memory +void rlUnloadTexture(unsigned int id) +{ + if (id > 0) glDeleteTextures(1, &id); +} + + +// Load a texture to be used for rendering (fbo with color and depth attachments) +RenderTexture2D rlLoadRenderTexture(int width, int height) +{ + RenderTexture2D target; + + target.id = 0; + + target.texture.id = 0; + target.texture.width = width; + target.texture.height = height; + target.texture.format = UNCOMPRESSED_R8G8B8A8; + target.texture.mipmaps = 1; + + target.depth.id = 0; + target.depth.width = width; + target.depth.height = height; + target.depth.format = 19; //DEPTH_COMPONENT_24BIT + target.depth.mipmaps = 1; + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + // Create the texture that will serve as the color attachment for the framebuffer + glGenTextures(1, &target.texture.id); + glBindTexture(GL_TEXTURE_2D, target.texture.id); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); + glBindTexture(GL_TEXTURE_2D, 0); + +#if defined(GRAPHICS_API_OPENGL_21) || defined(GRAPHICS_API_OPENGL_ES2) + #define USE_DEPTH_RENDERBUFFER +#else + #define USE_DEPTH_TEXTURE +#endif + +#if defined(USE_DEPTH_RENDERBUFFER) + // Create the renderbuffer that will serve as the depth attachment for the framebuffer. + glGenRenderbuffers(1, &target.depth.id); + glBindRenderbuffer(GL_RENDERBUFFER, target.depth.id); + glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height); // GL_DEPTH_COMPONENT24 not supported on Android +#elif defined(USE_DEPTH_TEXTURE) + // NOTE: We can also use a texture for depth buffer (GL_ARB_depth_texture/GL_OES_depth_texture extension required) + // A renderbuffer is simpler than a texture and could offer better performance on embedded devices + glGenTextures(1, &target.depth.id); + glBindTexture(GL_TEXTURE_2D, target.depth.id); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT24, width, height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL); + glBindTexture(GL_TEXTURE_2D, 0); +#endif + + // Create the framebuffer object + glGenFramebuffers(1, &target.id); + glBindFramebuffer(GL_FRAMEBUFFER, target.id); + + // Attach color texture and depth renderbuffer to FBO + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, target.texture.id, 0); +#if defined(USE_DEPTH_RENDERBUFFER) + glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, target.depth.id); +#elif defined(USE_DEPTH_TEXTURE) + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, target.depth.id, 0); +#endif + + GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); + + if (status != GL_FRAMEBUFFER_COMPLETE) + { + TraceLog(LOG_WARNING, "Framebuffer object could not be created..."); + + switch (status) + { + case GL_FRAMEBUFFER_UNSUPPORTED: TraceLog(LOG_WARNING, "Framebuffer is unsupported"); break; + case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: TraceLog(LOG_WARNING, "Framebuffer incomplete attachment"); break; +#if defined(GRAPHICS_API_OPENGL_ES2) + case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS: TraceLog(LOG_WARNING, "Framebuffer incomplete dimensions"); break; +#endif + case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: TraceLog(LOG_WARNING, "Framebuffer incomplete missing attachment"); break; + default: break; + } + + glDeleteTextures(1, &target.texture.id); + glDeleteTextures(1, &target.depth.id); + glDeleteFramebuffers(1, &target.id); + } + else TraceLog(LOG_INFO, "[FBO ID %i] Framebuffer object created successfully", target.id); + + glBindFramebuffer(GL_FRAMEBUFFER, 0); +#endif + + return target; +} + +// Generate mipmap data for selected texture +void rlGenerateMipmaps(Texture2D *texture) +{ + glBindTexture(GL_TEXTURE_2D, texture->id); + + // Check if texture is power-of-two (POT) + bool texIsPOT = false; + + if (((texture->width > 0) && ((texture->width & (texture->width - 1)) == 0)) && + ((texture->height > 0) && ((texture->height & (texture->height - 1)) == 0))) texIsPOT = true; + + if ((texIsPOT) || (texNPOTSupported)) + { +#if defined(GRAPHICS_API_OPENGL_11) + // WARNING: Manual mipmap generation only works for RGBA 32bit textures! + if (texture->format == UNCOMPRESSED_R8G8B8A8) + { + // Retrieve texture data from VRAM + void *data = rlReadTexturePixels(*texture); + + // NOTE: data size is reallocated to fit mipmaps data + // NOTE: CPU mipmap generation only supports RGBA 32bit data + int mipmapCount = GenerateMipmaps(data, texture->width, texture->height); + + int size = texture->width*texture->height*4; + int offset = size; + + int mipWidth = texture->width/2; + int mipHeight = texture->height/2; + + // Load the mipmaps + for (int level = 1; level < mipmapCount; level++) + { + glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA8, mipWidth, mipHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, (unsigned char *)data + offset); + + size = mipWidth*mipHeight*4; + offset += size; + + mipWidth /= 2; + mipHeight /= 2; + } + + texture->mipmaps = mipmapCount + 1; + free(data); // Once mipmaps have been generated and data has been uploaded to GPU VRAM, we can discard RAM data + + TraceLog(LOG_WARNING, "[TEX ID %i] Mipmaps [%i] generated manually on CPU side", texture->id, texture->mipmaps); + } + else TraceLog(LOG_WARNING, "[TEX ID %i] Mipmaps could not be generated for texture format", texture->id); +#endif + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + //glHint(GL_GENERATE_MIPMAP_HINT, GL_DONT_CARE); // Hint for mipmaps generation algorythm: GL_FASTEST, GL_NICEST, GL_DONT_CARE + glGenerateMipmap(GL_TEXTURE_2D); // Generate mipmaps automatically + TraceLog(LOG_INFO, "[TEX ID %i] Mipmaps generated automatically", texture->id); + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); // Activate Trilinear filtering for mipmaps + + #define MIN(a,b) (((a)<(b))?(a):(b)) + #define MAX(a,b) (((a)>(b))?(a):(b)) + + texture->mipmaps = 1 + (int)floor(log(MAX(texture->width, texture->height))/log(2)); +#endif + } + else TraceLog(LOG_WARNING, "[TEX ID %i] Mipmaps can not be generated", texture->id); + + glBindTexture(GL_TEXTURE_2D, 0); +} + +// Upload vertex data into a VAO (if supported) and VBO +// TODO: Check if mesh has already been loaded in GPU +void rlLoadMesh(Mesh *mesh, bool dynamic) +{ + mesh->vaoId = 0; // Vertex Array Object + mesh->vboId[0] = 0; // Vertex positions VBO + mesh->vboId[1] = 0; // Vertex texcoords VBO + mesh->vboId[2] = 0; // Vertex normals VBO + mesh->vboId[3] = 0; // Vertex colors VBO + mesh->vboId[4] = 0; // Vertex tangents VBO + mesh->vboId[5] = 0; // Vertex texcoords2 VBO + mesh->vboId[6] = 0; // Vertex indices VBO + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + int drawHint = GL_STATIC_DRAW; + if (dynamic) drawHint = GL_DYNAMIC_DRAW; + + if (vaoSupported) + { + // Initialize Quads VAO (Buffer A) + glGenVertexArrays(1, &mesh->vaoId); + glBindVertexArray(mesh->vaoId); + } + + // NOTE: Attributes must be uploaded considering default locations points + + // Enable vertex attributes: position (shader-location = 0) + glGenBuffers(1, &mesh->vboId[0]); + glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[0]); + glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*mesh->vertexCount, mesh->vertices, drawHint); + glVertexAttribPointer(0, 3, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(0); + + // Enable vertex attributes: texcoords (shader-location = 1) + glGenBuffers(1, &mesh->vboId[1]); + glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[1]); + glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*mesh->vertexCount, mesh->texcoords, drawHint); + glVertexAttribPointer(1, 2, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(1); + + // Enable vertex attributes: normals (shader-location = 2) + if (mesh->normals != NULL) + { + glGenBuffers(1, &mesh->vboId[2]); + glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[2]); + glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*mesh->vertexCount, mesh->normals, drawHint); + glVertexAttribPointer(2, 3, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(2); + } + else + { + // Default color vertex attribute set to WHITE + glVertexAttrib3f(2, 1.0f, 1.0f, 1.0f); + glDisableVertexAttribArray(2); + } + + // Default color vertex attribute (shader-location = 3) + if (mesh->colors != NULL) + { + glGenBuffers(1, &mesh->vboId[3]); + glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[3]); + glBufferData(GL_ARRAY_BUFFER, sizeof(unsigned char)*4*mesh->vertexCount, mesh->colors, drawHint); + glVertexAttribPointer(3, 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); + glEnableVertexAttribArray(3); + } + else + { + // Default color vertex attribute set to WHITE + glVertexAttrib4f(3, 1.0f, 1.0f, 1.0f, 1.0f); + glDisableVertexAttribArray(3); + } + + // Default tangent vertex attribute (shader-location = 4) + if (mesh->tangents != NULL) + { + glGenBuffers(1, &mesh->vboId[4]); + glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[4]); + glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*mesh->vertexCount, mesh->tangents, drawHint); + glVertexAttribPointer(4, 4, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(4); + } + else + { + // Default tangents vertex attribute + glVertexAttrib4f(4, 0.0f, 0.0f, 0.0f, 0.0f); + glDisableVertexAttribArray(4); + } + + // Default texcoord2 vertex attribute (shader-location = 5) + if (mesh->texcoords2 != NULL) + { + glGenBuffers(1, &mesh->vboId[5]); + glBindBuffer(GL_ARRAY_BUFFER, mesh->vboId[5]); + glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*mesh->vertexCount, mesh->texcoords2, drawHint); + glVertexAttribPointer(5, 2, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(5); + } + else + { + // Default texcoord2 vertex attribute + glVertexAttrib2f(5, 0.0f, 0.0f); + glDisableVertexAttribArray(5); + } + + if (mesh->indices != NULL) + { + glGenBuffers(1, &mesh->vboId[6]); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mesh->vboId[6]); + glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(unsigned short)*mesh->triangleCount*3, mesh->indices, GL_STATIC_DRAW); + } + + if (vaoSupported) + { + if (mesh->vaoId > 0) TraceLog(LOG_INFO, "[VAO ID %i] Mesh uploaded successfully to VRAM (GPU)", mesh->vaoId); + else TraceLog(LOG_WARNING, "Mesh could not be uploaded to VRAM (GPU)"); + } + else + { + TraceLog(LOG_INFO, "[VBOs] Mesh uploaded successfully to VRAM (GPU)"); + } +#endif +} + +// Update vertex data on GPU (upload new data to one buffer) +void rlUpdateMesh(Mesh mesh, int buffer, int numVertex) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + // Activate mesh VAO + if (vaoSupported) glBindVertexArray(mesh.vaoId); + + switch (buffer) + { + case 0: // Update vertices (vertex position) + { + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[0]); + if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*numVertex, mesh.vertices, GL_DYNAMIC_DRAW); + else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*3*numVertex, mesh.vertices); + + } break; + case 1: // Update texcoords (vertex texture coordinates) + { + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[1]); + if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*numVertex, mesh.texcoords, GL_DYNAMIC_DRAW); + else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*2*numVertex, mesh.texcoords); + + } break; + case 2: // Update normals (vertex normals) + { + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[2]); + if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*numVertex, mesh.normals, GL_DYNAMIC_DRAW); + else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*3*numVertex, mesh.normals); + + } break; + case 3: // Update colors (vertex colors) + { + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[3]); + if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*numVertex, mesh.colors, GL_DYNAMIC_DRAW); + else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(unsigned char)*4*numVertex, mesh.colors); + + } break; + case 4: // Update tangents (vertex tangents) + { + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[4]); + if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*numVertex, mesh.tangents, GL_DYNAMIC_DRAW); + else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*4*numVertex, mesh.tangents); + } break; + case 5: // Update texcoords2 (vertex second texture coordinates) + { + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[5]); + if (numVertex >= mesh.vertexCount) glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*numVertex, mesh.texcoords2, GL_DYNAMIC_DRAW); + else glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*2*numVertex, mesh.texcoords2); + } break; + default: break; + } + + // Unbind the current VAO + if (vaoSupported) glBindVertexArray(0); + + // Another option would be using buffer mapping... + //mesh.vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_READ_WRITE); + // Now we can modify vertices + //glUnmapBuffer(GL_ARRAY_BUFFER); +#endif +} + +// Draw a 3d mesh with material and transform +void rlDrawMesh(Mesh mesh, Material material, Matrix transform) +{ +#if defined(GRAPHICS_API_OPENGL_11) + glEnable(GL_TEXTURE_2D); + glBindTexture(GL_TEXTURE_2D, material.maps[MAP_DIFFUSE].texture.id); + + // NOTE: On OpenGL 1.1 we use Vertex Arrays to draw model + glEnableClientState(GL_VERTEX_ARRAY); // Enable vertex array + glEnableClientState(GL_TEXTURE_COORD_ARRAY); // Enable texture coords array + if (mesh.normals != NULL) glEnableClientState(GL_NORMAL_ARRAY); // Enable normals array + if (mesh.colors != NULL) glEnableClientState(GL_COLOR_ARRAY); // Enable colors array + + glVertexPointer(3, GL_FLOAT, 0, mesh.vertices); // Pointer to vertex coords array + glTexCoordPointer(2, GL_FLOAT, 0, mesh.texcoords); // Pointer to texture coords array + if (mesh.normals != NULL) glNormalPointer(GL_FLOAT, 0, mesh.normals); // Pointer to normals array + if (mesh.colors != NULL) glColorPointer(4, GL_UNSIGNED_BYTE, 0, mesh.colors); // Pointer to colors array + + rlPushMatrix(); + rlMultMatrixf(MatrixToFloat(transform)); + rlColor4ub(material.maps[MAP_DIFFUSE].color.r, material.maps[MAP_DIFFUSE].color.g, material.maps[MAP_DIFFUSE].color.b, material.maps[MAP_DIFFUSE].color.a); + + if (mesh.indices != NULL) glDrawElements(GL_TRIANGLES, mesh.triangleCount*3, GL_UNSIGNED_SHORT, mesh.indices); + else glDrawArrays(GL_TRIANGLES, 0, mesh.vertexCount); + rlPopMatrix(); + + glDisableClientState(GL_VERTEX_ARRAY); // Disable vertex array + glDisableClientState(GL_TEXTURE_COORD_ARRAY); // Disable texture coords array + if (mesh.normals != NULL) glDisableClientState(GL_NORMAL_ARRAY); // Disable normals array + if (mesh.colors != NULL) glDisableClientState(GL_NORMAL_ARRAY); // Disable colors array + + glDisable(GL_TEXTURE_2D); + glBindTexture(GL_TEXTURE_2D, 0); +#endif + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + // Bind shader program + glUseProgram(material.shader.id); + + // Matrices and other values required by shader + //----------------------------------------------------- + // Calculate and send to shader model matrix (used by PBR shader) + if (material.shader.locs[LOC_MATRIX_MODEL] != -1) SetShaderValueMatrix(material.shader, material.shader.locs[LOC_MATRIX_MODEL], transform); + + // Upload to shader material.colDiffuse + if (material.shader.locs[LOC_COLOR_DIFFUSE] != -1) + glUniform4f(material.shader.locs[LOC_COLOR_DIFFUSE], (float)material.maps[MAP_DIFFUSE].color.r/255.0f, + (float)material.maps[MAP_DIFFUSE].color.g/255.0f, + (float)material.maps[MAP_DIFFUSE].color.b/255.0f, + (float)material.maps[MAP_DIFFUSE].color.a/255.0f); + + // Upload to shader material.colSpecular (if available) + if (material.shader.locs[LOC_COLOR_SPECULAR] != -1) + glUniform4f(material.shader.locs[LOC_COLOR_SPECULAR], (float)material.maps[MAP_SPECULAR].color.r/255.0f, + (float)material.maps[MAP_SPECULAR].color.g/255.0f, + (float)material.maps[MAP_SPECULAR].color.b/255.0f, + (float)material.maps[MAP_SPECULAR].color.a/255.0f); + + if (material.shader.locs[LOC_MATRIX_VIEW] != -1) SetShaderValueMatrix(material.shader, material.shader.locs[LOC_MATRIX_VIEW], modelview); + if (material.shader.locs[LOC_MATRIX_PROJECTION] != -1) SetShaderValueMatrix(material.shader, material.shader.locs[LOC_MATRIX_PROJECTION], projection); + + // At this point the modelview matrix just contains the view matrix (camera) + // That's because BeginMode3D() sets it an no model-drawing function modifies it, all use rlPushMatrix() and rlPopMatrix() + Matrix matView = modelview; // View matrix (camera) + Matrix matProjection = projection; // Projection matrix (perspective) + + // Calculate model-view matrix combining matModel and matView + Matrix matModelView = MatrixMultiply(transform, matView); // Transform to camera-space coordinates + //----------------------------------------------------- + + // Bind active texture maps (if available) + for (int i = 0; i < MAX_MATERIAL_MAPS; i++) + { + if (material.maps[i].texture.id > 0) + { + glActiveTexture(GL_TEXTURE0 + i); + if ((i == MAP_IRRADIANCE) || (i == MAP_PREFILTER) || (i == MAP_CUBEMAP)) glBindTexture(GL_TEXTURE_CUBE_MAP, material.maps[i].texture.id); + else glBindTexture(GL_TEXTURE_2D, material.maps[i].texture.id); + + glUniform1i(material.shader.locs[LOC_MAP_DIFFUSE + i], i); + } + } + + // Bind vertex array objects (or VBOs) + if (vaoSupported) glBindVertexArray(mesh.vaoId); + else + { + // TODO: Simplify VBO binding into a for loop + + // Bind mesh VBO data: vertex position (shader-location = 0) + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[0]); + glVertexAttribPointer(material.shader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_POSITION]); + + // Bind mesh VBO data: vertex texcoords (shader-location = 1) + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[1]); + glVertexAttribPointer(material.shader.locs[LOC_VERTEX_TEXCOORD01], 2, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_TEXCOORD01]); + + // Bind mesh VBO data: vertex normals (shader-location = 2, if available) + if (material.shader.locs[LOC_VERTEX_NORMAL] != -1) + { + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[2]); + glVertexAttribPointer(material.shader.locs[LOC_VERTEX_NORMAL], 3, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_NORMAL]); + } + + // Bind mesh VBO data: vertex colors (shader-location = 3, if available) + if (material.shader.locs[LOC_VERTEX_COLOR] != -1) + { + if (mesh.vboId[3] != 0) + { + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[3]); + glVertexAttribPointer(material.shader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); + glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_COLOR]); + } + else + { + // Set default value for unused attribute + // NOTE: Required when using default shader and no VAO support + glVertexAttrib4f(material.shader.locs[LOC_VERTEX_COLOR], 1.0f, 1.0f, 1.0f, 1.0f); + glDisableVertexAttribArray(material.shader.locs[LOC_VERTEX_COLOR]); + } + } + + // Bind mesh VBO data: vertex tangents (shader-location = 4, if available) + if (material.shader.locs[LOC_VERTEX_TANGENT] != -1) + { + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[4]); + glVertexAttribPointer(material.shader.locs[LOC_VERTEX_TANGENT], 4, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_TANGENT]); + } + + // Bind mesh VBO data: vertex texcoords2 (shader-location = 5, if available) + if (material.shader.locs[LOC_VERTEX_TEXCOORD02] != -1) + { + glBindBuffer(GL_ARRAY_BUFFER, mesh.vboId[5]); + glVertexAttribPointer(material.shader.locs[LOC_VERTEX_TEXCOORD02], 2, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(material.shader.locs[LOC_VERTEX_TEXCOORD02]); + } + + if (mesh.indices != NULL) glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mesh.vboId[6]); + } + + int eyesCount = 1; +#if defined(SUPPORT_VR_SIMULATOR) + if (vrStereoRender) eyesCount = 2; +#endif + + for (int eye = 0; eye < eyesCount; eye++) + { + if (eyesCount == 1) modelview = matModelView; + #if defined(SUPPORT_VR_SIMULATOR) + else SetStereoView(eye, matProjection, matModelView); + #endif + + // Calculate model-view-projection matrix (MVP) + Matrix matMVP = MatrixMultiply(modelview, projection); // Transform to screen-space coordinates + + // Send combined model-view-projection matrix to shader + glUniformMatrix4fv(material.shader.locs[LOC_MATRIX_MVP], 1, false, MatrixToFloat(matMVP)); + + // Draw call! + if (mesh.indices != NULL) glDrawElements(GL_TRIANGLES, mesh.triangleCount*3, GL_UNSIGNED_SHORT, 0); // Indexed vertices draw + else glDrawArrays(GL_TRIANGLES, 0, mesh.vertexCount); + } + + // Unbind all binded texture maps + for (int i = 0; i < MAX_MATERIAL_MAPS; i++) + { + glActiveTexture(GL_TEXTURE0 + i); // Set shader active texture + if ((i == MAP_IRRADIANCE) || (i == MAP_PREFILTER) || (i == MAP_CUBEMAP)) glBindTexture(GL_TEXTURE_CUBE_MAP, 0); + else glBindTexture(GL_TEXTURE_2D, 0); // Unbind current active texture + } + + // Unind vertex array objects (or VBOs) + if (vaoSupported) glBindVertexArray(0); + else + { + glBindBuffer(GL_ARRAY_BUFFER, 0); + if (mesh.indices != NULL) glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); + } + + // Unbind shader program + glUseProgram(0); + + // Restore projection/modelview matrices + // NOTE: In stereo rendering matrices are being modified to fit every eye + projection = matProjection; + modelview = matView; +#endif +} + +// Unload mesh data from CPU and GPU +void rlUnloadMesh(Mesh *mesh) +{ + if (mesh->vertices != NULL) free(mesh->vertices); + if (mesh->texcoords != NULL) free(mesh->texcoords); + if (mesh->normals != NULL) free(mesh->normals); + if (mesh->colors != NULL) free(mesh->colors); + if (mesh->tangents != NULL) free(mesh->tangents); + if (mesh->texcoords2 != NULL) free(mesh->texcoords2); + if (mesh->indices != NULL) free(mesh->indices); + + rlDeleteBuffers(mesh->vboId[0]); // vertex + rlDeleteBuffers(mesh->vboId[1]); // texcoords + rlDeleteBuffers(mesh->vboId[2]); // normals + rlDeleteBuffers(mesh->vboId[3]); // colors + rlDeleteBuffers(mesh->vboId[4]); // tangents + rlDeleteBuffers(mesh->vboId[5]); // texcoords2 + rlDeleteBuffers(mesh->vboId[6]); // indices + + rlDeleteVertexArrays(mesh->vaoId); +} + +// Read screen pixel data (color buffer) +unsigned char *rlReadScreenPixels(int width, int height) +{ + unsigned char *screenData = (unsigned char *)calloc(width*height*4, sizeof(unsigned char)); + + // NOTE: glReadPixels returns image flipped vertically -> (0,0) is the bottom left corner of the framebuffer + glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, screenData); + + // Flip image vertically! + unsigned char *imgData = (unsigned char *)malloc(width*height*sizeof(unsigned char)*4); + + for (int y = height - 1; y >= 0; y--) + { + for (int x = 0; x < (width*4); x++) + { + // Flip line + imgData[((height - 1) - y)*width*4 + x] = screenData[(y*width*4) + x]; + + // Set alpha component value to 255 (no trasparent image retrieval) + // NOTE: Alpha value has already been applied to RGB in framebuffer, we don't need it! + if (((x + 1)%4) == 0) imgData[((height - 1) - y)*width*4 + x] = 255; + } + } + + free(screenData); + + return imgData; // NOTE: image data should be freed +} + +// Read texture pixel data +// NOTE: glGetTexImage() is not available on OpenGL ES 2.0 +// Texture2D width and height are required on OpenGL ES 2.0. There is no way to get it from texture id. +void *rlReadTexturePixels(Texture2D texture) +{ + void *pixels = NULL; + +#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) + glBindTexture(GL_TEXTURE_2D, texture.id); + + // NOTE: Using texture.id, we can retrieve some texture info (but not on OpenGL ES 2.0) + /* + int width, height, format; + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width); + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &height); + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, &format); + // Other texture info: GL_TEXTURE_RED_SIZE, GL_TEXTURE_GREEN_SIZE, GL_TEXTURE_BLUE_SIZE, GL_TEXTURE_ALPHA_SIZE + */ + + // NOTE: Each row written to or read from by OpenGL pixel operations like glGetTexImage are aligned to a 4 byte boundary by default, which may add some padding. + // Use glPixelStorei to modify padding with the GL_[UN]PACK_ALIGNMENT setting. + // GL_PACK_ALIGNMENT affects operations that read from OpenGL memory (glReadPixels, glGetTexImage, etc.) + // GL_UNPACK_ALIGNMENT affects operations that write to OpenGL memory (glTexImage, etc.) + glPixelStorei(GL_PACK_ALIGNMENT, 1); + + int glInternalFormat, glFormat, glType; + GetGlFormats(texture.format, &glInternalFormat, &glFormat, &glType); + unsigned int size = GetPixelDataSize(texture.width, texture.height, texture.format); + + if ((glInternalFormat != -1) && (texture.format < COMPRESSED_DXT1_RGB)) + { + pixels = (unsigned char *)malloc(size); + glGetTexImage(GL_TEXTURE_2D, 0, glFormat, glType, pixels); + } + else TraceLog(LOG_WARNING, "Texture data retrieval not suported for pixel format"); + + glBindTexture(GL_TEXTURE_2D, 0); +#endif + +#if defined(GRAPHICS_API_OPENGL_ES2) + RenderTexture2D fbo = rlLoadRenderTexture(texture.width, texture.height); + + // NOTE: Two possible Options: + // 1 - Bind texture to color fbo attachment and glReadPixels() + // 2 - Create an fbo, activate it, render quad with texture, glReadPixels() + +#define GET_TEXTURE_FBO_OPTION_1 // It works +#if defined(GET_TEXTURE_FBO_OPTION_1) + glBindFramebuffer(GL_FRAMEBUFFER, fbo.id); + glBindTexture(GL_TEXTURE_2D, 0); + + // Attach our texture to FBO -> Texture must be RGBA + // NOTE: Previoust attached texture is automatically detached + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.id, 0); + + pixels = (unsigned char *)malloc(texture.width*texture.height*4*sizeof(unsigned char)); + + // NOTE: We read data as RGBA because FBO texture is configured as RGBA, despite binding a RGB texture... + glReadPixels(0, 0, texture.width, texture.height, GL_RGBA, GL_UNSIGNED_BYTE, pixels); + + // Re-attach internal FBO color texture before deleting it + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fbo.texture.id, 0); + + glBindFramebuffer(GL_FRAMEBUFFER, 0); + +#elif defined(GET_TEXTURE_FBO_OPTION_2) + // Render texture to fbo + glBindFramebuffer(GL_FRAMEBUFFER, fbo.id); + + glClearColor(0.0f, 0.0f, 0.0f, 0.0f); + glClearDepthf(1.0f); + //glDisable(GL_TEXTURE_2D); + glEnable(GL_DEPTH_TEST); + //glDisable(GL_BLEND); + + glViewport(0, 0, texture.width, texture.height); + rlOrtho(0.0, texture.width, texture.height, 0.0, 0.0, 1.0); + + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + glUseProgram(GetShaderDefault().id); + glBindTexture(GL_TEXTURE_2D, texture.id); + GenDrawQuad(); + glBindTexture(GL_TEXTURE_2D, 0); + glUseProgram(0); + + pixels = (unsigned char *)malloc(texture.width*texture.height*4*sizeof(unsigned char)); + + glReadPixels(0, 0, texture.width, texture.height, GL_RGBA, GL_UNSIGNED_BYTE, pixels); + + // Bind framebuffer 0, which means render to back buffer + glBindFramebuffer(GL_FRAMEBUFFER, 0); + + // Reset viewport dimensions to default + glViewport(0, 0, screenWidth, screenHeight); + +#endif // GET_TEXTURE_FBO_OPTION + + // Clean up temporal fbo + rlDeleteRenderTextures(fbo); + +#endif + + return pixels; +} + +/* +// TODO: Record draw calls to be processed in batch +// NOTE: Global state must be kept +void rlRecordDraw(void) +{ + // TODO: Before adding a new draw, check if anything changed from last stored draw +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + draws[drawsCounter].vaoId = currentState.vaoId; // lines.id, trangles.id, quads.id? + draws[drawsCounter].textureId = currentState.textureId; // whiteTexture? + draws[drawsCounter].shaderId = currentState.shaderId; // defaultShader.id + draws[drawsCounter].projection = projection; + draws[drawsCounter].modelview = modelview; + draws[drawsCounter].vertexCount = currentState.vertexCount; + + drawsCounter++; +#endif +} +*/ + +//---------------------------------------------------------------------------------- +// Module Functions Definition - Shaders Functions +// NOTE: Those functions are exposed directly to the user in raylib.h +//---------------------------------------------------------------------------------- + +// Get default internal texture (white texture) +Texture2D GetTextureDefault(void) +{ + Texture2D texture; + + texture.id = whiteTexture; + texture.width = 1; + texture.height = 1; + texture.mipmaps = 1; + texture.format = UNCOMPRESSED_R8G8B8A8; + + return texture; +} + +// Get default shader +Shader GetShaderDefault(void) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + return defaultShader; +#else + Shader shader = { 0 }; + return shader; +#endif +} + +// Load text data from file +// NOTE: text chars array should be freed manually +char *LoadText(const char *fileName) +{ + FILE *textFile; + char *text = NULL; + + int count = 0; + + if (fileName != NULL) + { + textFile = fopen(fileName,"rt"); + + if (textFile != NULL) + { + fseek(textFile, 0, SEEK_END); + count = ftell(textFile); + rewind(textFile); + + if (count > 0) + { + text = (char *)malloc(sizeof(char)*(count + 1)); + count = fread(text, sizeof(char), count, textFile); + text[count] = '\0'; + } + + fclose(textFile); + } + else TraceLog(LOG_WARNING, "[%s] Text file could not be opened", fileName); + } + + return text; +} + +// Load shader from files and bind default locations +// NOTE: If shader string is NULL, using default vertex/fragment shaders +Shader LoadShader(const char *vsFileName, const char *fsFileName) +{ + Shader shader = { 0 }; + + char *vShaderStr = NULL; + char *fShaderStr = NULL; + + if (vsFileName != NULL) vShaderStr = LoadText(vsFileName); + if (fsFileName != NULL) fShaderStr = LoadText(fsFileName); + + shader = LoadShaderCode(vShaderStr, fShaderStr); + + if (vShaderStr != NULL) free(vShaderStr); + if (fShaderStr != NULL) free(fShaderStr); + + return shader; +} + +// Load shader from code strings +// NOTE: If shader string is NULL, using default vertex/fragment shaders +Shader LoadShaderCode(char *vsCode, char *fsCode) +{ + Shader shader = { 0 }; + + // NOTE: All locations must be reseted to -1 (no location) + for (int i = 0; i < MAX_SHADER_LOCATIONS; i++) shader.locs[i] = -1; + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + unsigned int vertexShaderId = defaultVShaderId; + unsigned int fragmentShaderId = defaultFShaderId; + + if (vsCode != NULL) vertexShaderId = CompileShader(vsCode, GL_VERTEX_SHADER); + if (fsCode != NULL) fragmentShaderId = CompileShader(fsCode, GL_FRAGMENT_SHADER); + + if ((vertexShaderId == defaultVShaderId) && (fragmentShaderId == defaultFShaderId)) shader = defaultShader; + else + { + shader.id = LoadShaderProgram(vertexShaderId, fragmentShaderId); + + if (vertexShaderId != defaultVShaderId) glDeleteShader(vertexShaderId); + if (fragmentShaderId != defaultFShaderId) glDeleteShader(fragmentShaderId); + + if (shader.id == 0) + { + TraceLog(LOG_WARNING, "Custom shader could not be loaded"); + shader = defaultShader; + } + + // After shader loading, we TRY to set default location names + if (shader.id > 0) SetShaderDefaultLocations(&shader); + } + + // Get available shader uniforms + // NOTE: This information is useful for debug... + int uniformCount = -1; + + glGetProgramiv(shader.id, GL_ACTIVE_UNIFORMS, &uniformCount); + + for(int i = 0; i < uniformCount; i++) + { + int namelen = -1; + int num = -1; + char name[256]; // Assume no variable names longer than 256 + GLenum type = GL_ZERO; + + // Get the name of the uniforms + glGetActiveUniform(shader.id, i,sizeof(name) - 1, &namelen, &num, &type, name); + + name[namelen] = 0; + + // Get the location of the named uniform + GLuint location = glGetUniformLocation(shader.id, name); + + TraceLog(LOG_DEBUG, "[SHDR ID %i] Active uniform [%s] set at location: %i", shader.id, name, location); + } +#endif + + return shader; +} + +// Unload shader from GPU memory (VRAM) +void UnloadShader(Shader shader) +{ + if (shader.id > 0) + { + rlDeleteShader(shader.id); + TraceLog(LOG_INFO, "[SHDR ID %i] Unloaded shader program data", shader.id); + } +} + +// Begin custom shader mode +void BeginShaderMode(Shader shader) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + if (currentShader.id != shader.id) + { + rlglDraw(); + currentShader = shader; + } +#endif +} + +// End custom shader mode (returns to default shader) +void EndShaderMode(void) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + BeginShaderMode(defaultShader); +#endif +} + +// Get shader uniform location +int GetShaderLocation(Shader shader, const char *uniformName) +{ + int location = -1; +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + location = glGetUniformLocation(shader.id, uniformName); + + if (location == -1) TraceLog(LOG_WARNING, "[SHDR ID %i] Shader uniform [%s] COULD NOT BE FOUND", shader.id, uniformName); + else TraceLog(LOG_INFO, "[SHDR ID %i] Shader uniform [%s] set at location: %i", shader.id, uniformName, location); +#endif + return location; +} + +// Set shader uniform value (float) +void SetShaderValue(Shader shader, int uniformLoc, const float *value, int size) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + glUseProgram(shader.id); + + if (size == 1) glUniform1fv(uniformLoc, 1, value); // Shader uniform type: float + else if (size == 2) glUniform2fv(uniformLoc, 1, value); // Shader uniform type: vec2 + else if (size == 3) glUniform3fv(uniformLoc, 1, value); // Shader uniform type: vec3 + else if (size == 4) glUniform4fv(uniformLoc, 1, value); // Shader uniform type: vec4 + else TraceLog(LOG_WARNING, "Shader value float array size not supported"); + + //glUseProgram(0); // Avoid reseting current shader program, in case other uniforms are set +#endif +} + +// Set shader uniform value (int) +void SetShaderValuei(Shader shader, int uniformLoc, const int *value, int size) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + glUseProgram(shader.id); + + if (size == 1) glUniform1iv(uniformLoc, 1, value); // Shader uniform type: int + else if (size == 2) glUniform2iv(uniformLoc, 1, value); // Shader uniform type: ivec2 + else if (size == 3) glUniform3iv(uniformLoc, 1, value); // Shader uniform type: ivec3 + else if (size == 4) glUniform4iv(uniformLoc, 1, value); // Shader uniform type: ivec4 + else TraceLog(LOG_WARNING, "Shader value int array size not supported"); + + //glUseProgram(0); +#endif +} + +// Set shader uniform value (matrix 4x4) +void SetShaderValueMatrix(Shader shader, int uniformLoc, Matrix mat) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + glUseProgram(shader.id); + + glUniformMatrix4fv(uniformLoc, 1, false, MatrixToFloat(mat)); + + //glUseProgram(0); +#endif +} + +// Set a custom projection matrix (replaces internal projection matrix) +void SetMatrixProjection(Matrix proj) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + projection = proj; +#endif +} + +// Set a custom modelview matrix (replaces internal modelview matrix) +void SetMatrixModelview(Matrix view) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + modelview = view; +#endif +} + +// Return internal modelview matrix +Matrix GetMatrixModelview() +{ + Matrix matrix = MatrixIdentity(); +#if defined(GRAPHICS_API_OPENGL_11) + float mat[16]; + glGetFloatv(GL_MODELVIEW_MATRIX, mat); +#else + matrix = modelview; +#endif + return matrix; +} + +// Generate cubemap texture from HDR texture +// TODO: OpenGL ES 2.0 does not support GL_RGB16F texture format, neither GL_DEPTH_COMPONENT24 +Texture2D GenTextureCubemap(Shader shader, Texture2D skyHDR, int size) +{ + Texture2D cubemap = { 0 }; +#if defined(GRAPHICS_API_OPENGL_33) // || defined(GRAPHICS_API_OPENGL_ES2) + // NOTE: SetShaderDefaultLocations() already setups locations for projection and view Matrix in shader + // Other locations should be setup externally in shader before calling the function + + // Set up depth face culling and cubemap seamless + glDisable(GL_CULL_FACE); +#if defined(GRAPHICS_API_OPENGL_33) + glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS); // Flag not supported on OpenGL ES 2.0 +#endif + + + // Setup framebuffer + unsigned int fbo, rbo; + glGenFramebuffers(1, &fbo); + glGenRenderbuffers(1, &rbo); + glBindFramebuffer(GL_FRAMEBUFFER, fbo); + glBindRenderbuffer(GL_RENDERBUFFER, rbo); + glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, size, size); + glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbo); + + // Set up cubemap to render and attach to framebuffer + // NOTE: faces are stored with 16 bit floating point values + glGenTextures(1, &cubemap.id); + glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap.id); + for (unsigned int i = 0; i < 6; i++) + glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB16F, size, size, 0, GL_RGB, GL_FLOAT, NULL); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); +#if defined(GRAPHICS_API_OPENGL_33) + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); // Flag not supported on OpenGL ES 2.0 +#endif + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + // Create projection (transposed) and different views for each face + Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, 0.01, 1000.0); + //MatrixTranspose(&fboProjection); + Matrix fboViews[6] = { + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ -1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }) + }; + + // Convert HDR equirectangular environment map to cubemap equivalent + glUseProgram(shader.id); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, skyHDR.id); + SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_PROJECTION], fboProjection); + + // Note: don't forget to configure the viewport to the capture dimensions + glViewport(0, 0, size, size); + glBindFramebuffer(GL_FRAMEBUFFER, fbo); + + for (unsigned int i = 0; i < 6; i++) + { + SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_VIEW], fboViews[i]); + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, cubemap.id, 0); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + GenDrawCube(); + } + + // Unbind framebuffer and textures + glBindFramebuffer(GL_FRAMEBUFFER, 0); + + // Reset viewport dimensions to default + glViewport(0, 0, screenWidth, screenHeight); + //glEnable(GL_CULL_FACE); + + cubemap.width = size; + cubemap.height = size; +#endif + return cubemap; +} + +// Generate irradiance texture using cubemap data +// TODO: OpenGL ES 2.0 does not support GL_RGB16F texture format, neither GL_DEPTH_COMPONENT24 +Texture2D GenTextureIrradiance(Shader shader, Texture2D cubemap, int size) +{ + Texture2D irradiance = { 0 }; + +#if defined(GRAPHICS_API_OPENGL_33) // || defined(GRAPHICS_API_OPENGL_ES2) + // NOTE: SetShaderDefaultLocations() already setups locations for projection and view Matrix in shader + // Other locations should be setup externally in shader before calling the function + + // Setup framebuffer + unsigned int fbo, rbo; + glGenFramebuffers(1, &fbo); + glGenRenderbuffers(1, &rbo); + glBindFramebuffer(GL_FRAMEBUFFER, fbo); + glBindRenderbuffer(GL_RENDERBUFFER, rbo); + glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, size, size); + glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbo); + + // Create an irradiance cubemap, and re-scale capture FBO to irradiance scale + glGenTextures(1, &irradiance.id); + glBindTexture(GL_TEXTURE_CUBE_MAP, irradiance.id); + for (unsigned int i = 0; i < 6; i++) + glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB16F, size, size, 0, GL_RGB, GL_FLOAT, NULL); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + // Create projection (transposed) and different views for each face + Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, 0.01, 1000.0); + //MatrixTranspose(&fboProjection); + Matrix fboViews[6] = { + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ -1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }) + }; + + // Solve diffuse integral by convolution to create an irradiance cubemap + glUseProgram(shader.id); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap.id); + SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_PROJECTION], fboProjection); + + // Note: don't forget to configure the viewport to the capture dimensions + glViewport(0, 0, size, size); + glBindFramebuffer(GL_FRAMEBUFFER, fbo); + + for (unsigned int i = 0; i < 6; i++) + { + SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_VIEW], fboViews[i]); + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, irradiance.id, 0); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + GenDrawCube(); + } + + // Unbind framebuffer and textures + glBindFramebuffer(GL_FRAMEBUFFER, 0); + + // Reset viewport dimensions to default + glViewport(0, 0, screenWidth, screenHeight); + + irradiance.width = size; + irradiance.height = size; +#endif + return irradiance; +} + +// Generate prefilter texture using cubemap data +// TODO: OpenGL ES 2.0 does not support GL_RGB16F texture format, neither GL_DEPTH_COMPONENT24 +Texture2D GenTexturePrefilter(Shader shader, Texture2D cubemap, int size) +{ + Texture2D prefilter = { 0 }; + +#if defined(GRAPHICS_API_OPENGL_33) // || defined(GRAPHICS_API_OPENGL_ES2) + // NOTE: SetShaderDefaultLocations() already setups locations for projection and view Matrix in shader + // Other locations should be setup externally in shader before calling the function + // TODO: Locations should be taken out of this function... too shader dependant... + int roughnessLoc = GetShaderLocation(shader, "roughness"); + + // Setup framebuffer + unsigned int fbo, rbo; + glGenFramebuffers(1, &fbo); + glGenRenderbuffers(1, &rbo); + glBindFramebuffer(GL_FRAMEBUFFER, fbo); + glBindRenderbuffer(GL_RENDERBUFFER, rbo); + glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, size, size); + glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbo); + + // Create a prefiltered HDR environment map + glGenTextures(1, &prefilter.id); + glBindTexture(GL_TEXTURE_CUBE_MAP, prefilter.id); + for (unsigned int i = 0; i < 6; i++) + glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB16F, size, size, 0, GL_RGB, GL_FLOAT, NULL); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + // Generate mipmaps for the prefiltered HDR texture + glGenerateMipmap(GL_TEXTURE_CUBE_MAP); + + // Create projection (transposed) and different views for each face + Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, 0.01, 1000.0); + //MatrixTranspose(&fboProjection); + Matrix fboViews[6] = { + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ -1.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, 1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }), + MatrixLookAt((Vector3){ 0.0f, 0.0f, 0.0f }, (Vector3){ 0.0f, 0.0f, -1.0f }, (Vector3){ 0.0f, -1.0f, 0.0f }) + }; + + // Prefilter HDR and store data into mipmap levels + glUseProgram(shader.id); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap.id); + SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_PROJECTION], fboProjection); + + glBindFramebuffer(GL_FRAMEBUFFER, fbo); + + #define MAX_MIPMAP_LEVELS 5 // Max number of prefilter texture mipmaps + + for (unsigned int mip = 0; mip < MAX_MIPMAP_LEVELS; mip++) + { + // Resize framebuffer according to mip-level size. + unsigned int mipWidth = size*powf(0.5f, mip); + unsigned int mipHeight = size*powf(0.5f, mip); + + glBindRenderbuffer(GL_RENDERBUFFER, rbo); + glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, mipWidth, mipHeight); + glViewport(0, 0, mipWidth, mipHeight); + + float roughness = (float)mip/(float)(MAX_MIPMAP_LEVELS - 1); + glUniform1f(roughnessLoc, roughness); + + for (unsigned int i = 0; i < 6; ++i) + { + SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_VIEW], fboViews[i]); + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, prefilter.id, mip); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + GenDrawCube(); + } + } + + // Unbind framebuffer and textures + glBindFramebuffer(GL_FRAMEBUFFER, 0); + + // Reset viewport dimensions to default + glViewport(0, 0, screenWidth, screenHeight); + + prefilter.width = size; + prefilter.height = size; +#endif + return prefilter; +} + +// Generate BRDF texture using cubemap data +// TODO: OpenGL ES 2.0 does not support GL_RGB16F texture format, neither GL_DEPTH_COMPONENT24 +Texture2D GenTextureBRDF(Shader shader, Texture2D cubemap, int size) +{ + Texture2D brdf = { 0 }; +#if defined(GRAPHICS_API_OPENGL_33) // || defined(GRAPHICS_API_OPENGL_ES2) + // Generate BRDF convolution texture + glGenTextures(1, &brdf.id); + glBindTexture(GL_TEXTURE_2D, brdf.id); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RG16F, size, size, 0, GL_RG, GL_FLOAT, 0); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + // Render BRDF LUT into a quad using FBO + unsigned int fbo, rbo; + glGenFramebuffers(1, &fbo); + glGenRenderbuffers(1, &rbo); + glBindFramebuffer(GL_FRAMEBUFFER, fbo); + glBindRenderbuffer(GL_RENDERBUFFER, rbo); + glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, size, size); + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, brdf.id, 0); + + glViewport(0, 0, size, size); + glUseProgram(shader.id); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + GenDrawQuad(); + + // Unbind framebuffer and textures + glBindFramebuffer(GL_FRAMEBUFFER, 0); + + // Reset viewport dimensions to default + glViewport(0, 0, screenWidth, screenHeight); + + brdf.width = size; + brdf.height = size; +#endif + return brdf; +} + +// Begin blending mode (alpha, additive, multiplied) +// NOTE: Only 3 blending modes supported, default blend mode is alpha +void BeginBlendMode(int mode) +{ + if ((blendMode != mode) && (mode < 3)) + { + rlglDraw(); + + switch (mode) + { + case BLEND_ALPHA: glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); break; + case BLEND_ADDITIVE: glBlendFunc(GL_SRC_ALPHA, GL_ONE); break; // Alternative: glBlendFunc(GL_ONE, GL_ONE); + case BLEND_MULTIPLIED: glBlendFunc(GL_DST_COLOR, GL_ONE_MINUS_SRC_ALPHA); break; + default: break; + } + + blendMode = mode; + } +} + +// End blending mode (reset to default: alpha blending) +void EndBlendMode(void) +{ + BeginBlendMode(BLEND_ALPHA); +} + +#if defined(SUPPORT_VR_SIMULATOR) +// Get VR device information for some standard devices +VrDeviceInfo GetVrDeviceInfo(int vrDeviceType) +{ + VrDeviceInfo hmd = { 0 }; // Current VR device info + + switch (vrDeviceType) + { + case HMD_DEFAULT_DEVICE: + case HMD_OCULUS_RIFT_CV1: + { + // Oculus Rift CV1 parameters + // NOTE: CV1 represents a complete HMD redesign compared to previous versions, + // new Fresnel-hybrid-asymmetric lenses have been added and, consequently, + // previous parameters (DK2) and distortion shader (DK2) doesn't work any more. + // I just defined a set of parameters for simulator that approximate to CV1 stereo rendering + // but result is not the same obtained with Oculus PC SDK. + hmd.hResolution = 2160; // HMD horizontal resolution in pixels + hmd.vResolution = 1200; // HMD vertical resolution in pixels + hmd.hScreenSize = 0.133793f; // HMD horizontal size in meters + hmd.vScreenSize = 0.0669f; // HMD vertical size in meters + hmd.vScreenCenter = 0.04678f; // HMD screen center in meters + hmd.eyeToScreenDistance = 0.041f; // HMD distance between eye and display in meters + hmd.lensSeparationDistance = 0.07f; // HMD lens separation distance in meters + hmd.interpupillaryDistance = 0.07f; // HMD IPD (distance between pupils) in meters + hmd.lensDistortionValues[0] = 1.0f; // HMD lens distortion constant parameter 0 + hmd.lensDistortionValues[1] = 0.22f; // HMD lens distortion constant parameter 1 + hmd.lensDistortionValues[2] = 0.24f; // HMD lens distortion constant parameter 2 + hmd.lensDistortionValues[3] = 0.0f; // HMD lens distortion constant parameter 3 + hmd.chromaAbCorrection[0] = 0.996f; // HMD chromatic aberration correction parameter 0 + hmd.chromaAbCorrection[1] = -0.004f; // HMD chromatic aberration correction parameter 1 + hmd.chromaAbCorrection[2] = 1.014f; // HMD chromatic aberration correction parameter 2 + hmd.chromaAbCorrection[3] = 0.0f; // HMD chromatic aberration correction parameter 3 + + TraceLog(LOG_INFO, "Initializing VR Simulator (Oculus Rift CV1)"); + } break; + case HMD_OCULUS_RIFT_DK2: + { + // Oculus Rift DK2 parameters + hmd.hResolution = 1280; // HMD horizontal resolution in pixels + hmd.vResolution = 800; // HMD vertical resolution in pixels + hmd.hScreenSize = 0.14976f; // HMD horizontal size in meters + hmd.vScreenSize = 0.09356f; // HMD vertical size in meters + hmd.vScreenCenter = 0.04678f; // HMD screen center in meters + hmd.eyeToScreenDistance = 0.041f; // HMD distance between eye and display in meters + hmd.lensSeparationDistance = 0.0635f; // HMD lens separation distance in meters + hmd.interpupillaryDistance = 0.064f; // HMD IPD (distance between pupils) in meters + hmd.lensDistortionValues[0] = 1.0f; // HMD lens distortion constant parameter 0 + hmd.lensDistortionValues[1] = 0.22f; // HMD lens distortion constant parameter 1 + hmd.lensDistortionValues[2] = 0.24f; // HMD lens distortion constant parameter 2 + hmd.lensDistortionValues[3] = 0.0f; // HMD lens distortion constant parameter 3 + hmd.chromaAbCorrection[0] = 0.996f; // HMD chromatic aberration correction parameter 0 + hmd.chromaAbCorrection[1] = -0.004f; // HMD chromatic aberration correction parameter 1 + hmd.chromaAbCorrection[2] = 1.014f; // HMD chromatic aberration correction parameter 2 + hmd.chromaAbCorrection[3] = 0.0f; // HMD chromatic aberration correction parameter 3 + + TraceLog(LOG_INFO, "Initializing VR Simulator (Oculus Rift DK2)"); + } break; + case HMD_OCULUS_GO: + { + // TODO: Provide device display and lens parameters + } + case HMD_VALVE_HTC_VIVE: + { + // TODO: Provide device display and lens parameters + } + case HMD_SONY_PSVR: + { + // TODO: Provide device display and lens parameters + } + default: break; + } + + return hmd; +} + +// Init VR simulator for selected device parameters +// NOTE: It modifies the global variable: VrStereoConfig vrConfig +void InitVrSimulator(VrDeviceInfo info) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + // Initialize framebuffer and textures for stereo rendering + // NOTE: Screen size should match HMD aspect ratio + vrConfig.stereoFbo = rlLoadRenderTexture(screenWidth, screenHeight); + +#if defined(SUPPORT_DISTORTION_SHADER) + // Load distortion shader + vrConfig.distortionShader = LoadShaderCode(NULL, distortionFShaderStr); + + if (vrConfig.distortionShader.id > 0) SetShaderDefaultLocations(&vrConfig.distortionShader); +#endif + + // Set VR configutarion parameters, including distortion shader + SetStereoConfig(info); + + vrSimulatorReady = true; +#endif + +#if defined(GRAPHICS_API_OPENGL_11) + TraceLog(LOG_WARNING, "VR Simulator not supported on OpenGL 1.1"); +#endif +} + +// Close VR simulator for current device +void CloseVrSimulator(void) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + if (vrSimulatorReady) + { + rlDeleteRenderTextures(vrConfig.stereoFbo); // Unload stereo framebuffer and texture + #if defined(SUPPORT_DISTORTION_SHADER) + UnloadShader(vrConfig.distortionShader); // Unload distortion shader + #endif + } +#endif +} + +// Detect if VR simulator is running +bool IsVrSimulatorReady(void) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + return vrSimulatorReady; +#else + return false; +#endif +} + +// Set VR distortion shader for stereoscopic rendering +// TODO: Review VR system to be more flexible, move distortion shader to user side +void SetVrDistortionShader(Shader shader) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + vrConfig.distortionShader = shader; + + //SetStereoConfig(info); // TODO: Must be reviewed to set new distortion shader uniform values... +#endif +} + +// Enable/Disable VR experience (device or simulator) +void ToggleVrMode(void) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + vrSimulatorReady = !vrSimulatorReady; + + if (!vrSimulatorReady) + { + vrStereoRender = false; + + // Reset viewport and default projection-modelview matrices + rlViewport(0, 0, screenWidth, screenHeight); + projection = MatrixOrtho(0.0, screenWidth, screenHeight, 0.0, 0.0, 1.0); + modelview = MatrixIdentity(); + } + else vrStereoRender = true; +#endif +} + +// Update VR tracking (position and orientation) and camera +// NOTE: Camera (position, target, up) gets update with head tracking information +void UpdateVrTracking(Camera *camera) +{ + // TODO: Simulate 1st person camera system +} + +// Begin Oculus drawing configuration +void BeginVrDrawing(void) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + if (vrSimulatorReady) + { + // Setup framebuffer for stereo rendering + rlEnableRenderTexture(vrConfig.stereoFbo.id); + + // NOTE: If your application is configured to treat the texture as a linear format (e.g. GL_RGBA) + // and performs linear-to-gamma conversion in GLSL or does not care about gamma-correction, then: + // - Require OculusBuffer format to be OVR_FORMAT_R8G8B8A8_UNORM_SRGB + // - Do NOT enable GL_FRAMEBUFFER_SRGB + //glEnable(GL_FRAMEBUFFER_SRGB); + + //glViewport(0, 0, buffer.width, buffer.height); // Useful if rendering to separate framebuffers (every eye) + rlClearScreenBuffers(); // Clear current framebuffer(s) + + vrStereoRender = true; + } +#endif +} + +// End Oculus drawing process (and desktop mirror) +void EndVrDrawing(void) +{ +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + if (vrSimulatorReady) + { + vrStereoRender = false; // Disable stereo render + + rlDisableRenderTexture(); // Unbind current framebuffer + + rlClearScreenBuffers(); // Clear current framebuffer + + // Set viewport to default framebuffer size (screen size) + rlViewport(0, 0, screenWidth, screenHeight); + + // Let rlgl reconfigure internal matrices + rlMatrixMode(RL_PROJECTION); // Enable internal projection matrix + rlLoadIdentity(); // Reset internal projection matrix + rlOrtho(0.0, screenWidth, screenHeight, 0.0, 0.0, 1.0); // Recalculate internal projection matrix + rlMatrixMode(RL_MODELVIEW); // Enable internal modelview matrix + rlLoadIdentity(); // Reset internal modelview matrix + +#if defined(SUPPORT_DISTORTION_SHADER) + // Draw RenderTexture (stereoFbo) using distortion shader + currentShader = vrConfig.distortionShader; +#else + currentShader = GetShaderDefault(); +#endif + + rlEnableTexture(vrConfig.stereoFbo.texture.id); + + rlPushMatrix(); + rlBegin(RL_QUADS); + rlColor4ub(255, 255, 255, 255); + rlNormal3f(0.0f, 0.0f, 1.0f); + + // Bottom-left corner for texture and quad + rlTexCoord2f(0.0f, 1.0f); + rlVertex2f(0.0f, 0.0f); + + // Bottom-right corner for texture and quad + rlTexCoord2f(0.0f, 0.0f); + rlVertex2f(0.0f, vrConfig.stereoFbo.texture.height); + + // Top-right corner for texture and quad + rlTexCoord2f(1.0f, 0.0f); + rlVertex2f(vrConfig.stereoFbo.texture.width, vrConfig.stereoFbo.texture.height); + + // Top-left corner for texture and quad + rlTexCoord2f(1.0f, 1.0f); + rlVertex2f(vrConfig.stereoFbo.texture.width, 0.0f); + rlEnd(); + rlPopMatrix(); + + rlDisableTexture(); + + // Update and draw render texture fbo with distortion to backbuffer + UpdateBuffersDefault(); + DrawBuffersDefault(); + + // Restore defaultShader + currentShader = defaultShader; + + // Reset viewport and default projection-modelview matrices + rlViewport(0, 0, screenWidth, screenHeight); + projection = MatrixOrtho(0.0, screenWidth, screenHeight, 0.0, 0.0, 1.0); + modelview = MatrixIdentity(); + + rlDisableDepthTest(); + } +#endif +} +#endif // SUPPORT_VR_SIMULATOR + +//---------------------------------------------------------------------------------- +// Module specific Functions Definition +//---------------------------------------------------------------------------------- + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) +// Compile custom shader and return shader id +static unsigned int CompileShader(const char *shaderStr, int type) +{ + unsigned int shader = glCreateShader(type); + glShaderSource(shader, 1, &shaderStr, NULL); + + GLint success = 0; + glCompileShader(shader); + glGetShaderiv(shader, GL_COMPILE_STATUS, &success); + + if (success != GL_TRUE) + { + TraceLog(LOG_WARNING, "[SHDR ID %i] Failed to compile shader...", shader); + int maxLength = 0; + int length; + glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &maxLength); + +#if defined(_MSC_VER) + char *log = malloc(maxLength); +#else + char log[maxLength]; +#endif + glGetShaderInfoLog(shader, maxLength, &length, log); + + TraceLog(LOG_INFO, "%s", log); + +#if defined(_MSC_VER) + free(log); +#endif + } + else TraceLog(LOG_INFO, "[SHDR ID %i] Shader compiled successfully", shader); + + return shader; +} + +// Load custom shader strings and return program id +static unsigned int LoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId) +{ + unsigned int program = 0; + +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + + GLint success = 0; + program = glCreateProgram(); + + glAttachShader(program, vShaderId); + glAttachShader(program, fShaderId); + + // NOTE: Default attribute shader locations must be binded before linking + glBindAttribLocation(program, 0, DEFAULT_ATTRIB_POSITION_NAME); + glBindAttribLocation(program, 1, DEFAULT_ATTRIB_TEXCOORD_NAME); + glBindAttribLocation(program, 2, DEFAULT_ATTRIB_NORMAL_NAME); + glBindAttribLocation(program, 3, DEFAULT_ATTRIB_COLOR_NAME); + glBindAttribLocation(program, 4, DEFAULT_ATTRIB_TANGENT_NAME); + glBindAttribLocation(program, 5, DEFAULT_ATTRIB_TEXCOORD2_NAME); + + // NOTE: If some attrib name is no found on the shader, it locations becomes -1 + + glLinkProgram(program); + + // NOTE: All uniform variables are intitialised to 0 when a program links + + glGetProgramiv(program, GL_LINK_STATUS, &success); + + if (success == GL_FALSE) + { + TraceLog(LOG_WARNING, "[SHDR ID %i] Failed to link shader program...", program); + + int maxLength = 0; + int length; + + glGetProgramiv(program, GL_INFO_LOG_LENGTH, &maxLength); + +#ifdef _MSC_VER + char *log = malloc(maxLength); +#else + char log[maxLength]; +#endif + glGetProgramInfoLog(program, maxLength, &length, log); + + TraceLog(LOG_INFO, "%s", log); + +#ifdef _MSC_VER + free(log); +#endif + glDeleteProgram(program); + + program = 0; + } + else TraceLog(LOG_INFO, "[SHDR ID %i] Shader program loaded successfully", program); +#endif + return program; +} + + +// Load default shader (just vertex positioning and texture coloring) +// NOTE: This shader program is used for batch buffers (lines, triangles, quads) +static Shader LoadShaderDefault(void) +{ + Shader shader = { 0 }; + + // NOTE: All locations must be reseted to -1 (no location) + for (int i = 0; i < MAX_SHADER_LOCATIONS; i++) shader.locs[i] = -1; + + // Vertex shader directly defined, no external file required + char defaultVShaderStr[] = +#if defined(GRAPHICS_API_OPENGL_21) + "#version 120 \n" +#elif defined(GRAPHICS_API_OPENGL_ES2) + "#version 100 \n" +#endif +#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) + "attribute vec3 vertexPosition; \n" + "attribute vec2 vertexTexCoord; \n" + "attribute vec4 vertexColor; \n" + "varying vec2 fragTexCoord; \n" + "varying vec4 fragColor; \n" +#elif defined(GRAPHICS_API_OPENGL_33) + "#version 330 \n" + "in vec3 vertexPosition; \n" + "in vec2 vertexTexCoord; \n" + "in vec4 vertexColor; \n" + "out vec2 fragTexCoord; \n" + "out vec4 fragColor; \n" +#endif + "uniform mat4 mvp; \n" + "void main() \n" + "{ \n" + " fragTexCoord = vertexTexCoord; \n" + " fragColor = vertexColor; \n" + " gl_Position = mvp*vec4(vertexPosition, 1.0); \n" + "} \n"; + + // Fragment shader directly defined, no external file required + char defaultFShaderStr[] = +#if defined(GRAPHICS_API_OPENGL_21) + "#version 120 \n" +#elif defined(GRAPHICS_API_OPENGL_ES2) + "#version 100 \n" + "precision mediump float; \n" // precision required for OpenGL ES2 (WebGL) +#endif +#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) + "varying vec2 fragTexCoord; \n" + "varying vec4 fragColor; \n" +#elif defined(GRAPHICS_API_OPENGL_33) + "#version 330 \n" + "in vec2 fragTexCoord; \n" + "in vec4 fragColor; \n" + "out vec4 finalColor; \n" +#endif + "uniform sampler2D texture0; \n" + "uniform vec4 colDiffuse; \n" + "void main() \n" + "{ \n" +#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) + " vec4 texelColor = texture2D(texture0, fragTexCoord); \n" // NOTE: texture2D() is deprecated on OpenGL 3.3 and ES 3.0 + " gl_FragColor = texelColor*colDiffuse*fragColor; \n" +#elif defined(GRAPHICS_API_OPENGL_33) + " vec4 texelColor = texture(texture0, fragTexCoord); \n" + " finalColor = texelColor*colDiffuse*fragColor; \n" +#endif + "} \n"; + + // NOTE: Compiled vertex/fragment shaders are kept for re-use + defaultVShaderId = CompileShader(defaultVShaderStr, GL_VERTEX_SHADER); // Compile default vertex shader + defaultFShaderId = CompileShader(defaultFShaderStr, GL_FRAGMENT_SHADER); // Compile default fragment shader + + shader.id = LoadShaderProgram(defaultVShaderId, defaultFShaderId); + + if (shader.id > 0) + { + TraceLog(LOG_INFO, "[SHDR ID %i] Default shader loaded successfully", shader.id); + + // Set default shader locations: attributes locations + shader.locs[LOC_VERTEX_POSITION] = glGetAttribLocation(shader.id, "vertexPosition"); + shader.locs[LOC_VERTEX_TEXCOORD01] = glGetAttribLocation(shader.id, "vertexTexCoord"); + shader.locs[LOC_VERTEX_COLOR] = glGetAttribLocation(shader.id, "vertexColor"); + + // Set default shader locations: uniform locations + shader.locs[LOC_MATRIX_MVP] = glGetUniformLocation(shader.id, "mvp"); + shader.locs[LOC_COLOR_DIFFUSE] = glGetUniformLocation(shader.id, "colDiffuse"); + shader.locs[LOC_MAP_DIFFUSE] = glGetUniformLocation(shader.id, "texture0"); + + // NOTE: We could also use below function but in case DEFAULT_ATTRIB_* points are + // changed for external custom shaders, we just use direct bindings above + //SetShaderDefaultLocations(&shader); + } + else TraceLog(LOG_WARNING, "[SHDR ID %i] Default shader could not be loaded", shader.id); + + return shader; +} + +// Get location handlers to for shader attributes and uniforms +// NOTE: If any location is not found, loc point becomes -1 +static void SetShaderDefaultLocations(Shader *shader) +{ + // NOTE: Default shader attrib locations have been fixed before linking: + // vertex position location = 0 + // vertex texcoord location = 1 + // vertex normal location = 2 + // vertex color location = 3 + // vertex tangent location = 4 + // vertex texcoord2 location = 5 + + // Get handles to GLSL input attibute locations + shader->locs[LOC_VERTEX_POSITION] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_POSITION_NAME); + shader->locs[LOC_VERTEX_TEXCOORD01] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_TEXCOORD_NAME); + shader->locs[LOC_VERTEX_TEXCOORD02] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_TEXCOORD2_NAME); + shader->locs[LOC_VERTEX_NORMAL] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_NORMAL_NAME); + shader->locs[LOC_VERTEX_TANGENT] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_TANGENT_NAME); + shader->locs[LOC_VERTEX_COLOR] = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_COLOR_NAME); + + // Get handles to GLSL uniform locations (vertex shader) + shader->locs[LOC_MATRIX_MVP] = glGetUniformLocation(shader->id, "mvp"); + shader->locs[LOC_MATRIX_PROJECTION] = glGetUniformLocation(shader->id, "projection"); + shader->locs[LOC_MATRIX_VIEW] = glGetUniformLocation(shader->id, "view"); + + // Get handles to GLSL uniform locations (fragment shader) + shader->locs[LOC_COLOR_DIFFUSE] = glGetUniformLocation(shader->id, "colDiffuse"); + shader->locs[LOC_MAP_DIFFUSE] = glGetUniformLocation(shader->id, "texture0"); + shader->locs[LOC_MAP_SPECULAR] = glGetUniformLocation(shader->id, "texture1"); + shader->locs[LOC_MAP_NORMAL] = glGetUniformLocation(shader->id, "texture2"); +} + +// Unload default shader +static void UnloadShaderDefault(void) +{ + glUseProgram(0); + + glDetachShader(defaultShader.id, defaultVShaderId); + glDetachShader(defaultShader.id, defaultFShaderId); + glDeleteShader(defaultVShaderId); + glDeleteShader(defaultFShaderId); + + glDeleteProgram(defaultShader.id); +} + +// Load default internal buffers (lines, triangles, quads) +static void LoadBuffersDefault(void) +{ + // [CPU] Allocate and initialize float array buffers to store vertex data (lines, triangles, quads) + //-------------------------------------------------------------------------------------------- + + // Lines - Initialize arrays (vertex position and color data) + lines.vertices = (float *)malloc(sizeof(float)*3*2*MAX_LINES_BATCH); // 3 float by vertex, 2 vertex by line + lines.colors = (unsigned char *)malloc(sizeof(unsigned char)*4*2*MAX_LINES_BATCH); // 4 float by color, 2 colors by line + lines.texcoords = NULL; + lines.indices = NULL; + + for (int i = 0; i < (3*2*MAX_LINES_BATCH); i++) lines.vertices[i] = 0.0f; + for (int i = 0; i < (4*2*MAX_LINES_BATCH); i++) lines.colors[i] = 0; + + lines.vCounter = 0; + lines.cCounter = 0; + lines.tcCounter = 0; + + // Triangles - Initialize arrays (vertex position and color data) + triangles.vertices = (float *)malloc(sizeof(float)*3*3*MAX_TRIANGLES_BATCH); // 3 float by vertex, 3 vertex by triangle + triangles.colors = (unsigned char *)malloc(sizeof(unsigned char)*4*3*MAX_TRIANGLES_BATCH); // 4 float by color, 3 colors by triangle + triangles.texcoords = NULL; + triangles.indices = NULL; + + for (int i = 0; i < (3*3*MAX_TRIANGLES_BATCH); i++) triangles.vertices[i] = 0.0f; + for (int i = 0; i < (4*3*MAX_TRIANGLES_BATCH); i++) triangles.colors[i] = 0; + + triangles.vCounter = 0; + triangles.cCounter = 0; + triangles.tcCounter = 0; + + // Quads - Initialize arrays (vertex position, texcoord, color data and indexes) + quads.vertices = (float *)malloc(sizeof(float)*3*4*MAX_QUADS_BATCH); // 3 float by vertex, 4 vertex by quad + quads.texcoords = (float *)malloc(sizeof(float)*2*4*MAX_QUADS_BATCH); // 2 float by texcoord, 4 texcoord by quad + quads.colors = (unsigned char *)malloc(sizeof(unsigned char)*4*4*MAX_QUADS_BATCH); // 4 float by color, 4 colors by quad +#if defined(GRAPHICS_API_OPENGL_33) + quads.indices = (unsigned int *)malloc(sizeof(unsigned int)*6*MAX_QUADS_BATCH); // 6 int by quad (indices) +#elif defined(GRAPHICS_API_OPENGL_ES2) + quads.indices = (unsigned short *)malloc(sizeof(unsigned short)*6*MAX_QUADS_BATCH); // 6 int by quad (indices) +#endif + + for (int i = 0; i < (3*4*MAX_QUADS_BATCH); i++) quads.vertices[i] = 0.0f; + for (int i = 0; i < (2*4*MAX_QUADS_BATCH); i++) quads.texcoords[i] = 0.0f; + for (int i = 0; i < (4*4*MAX_QUADS_BATCH); i++) quads.colors[i] = 0; + + int k = 0; + + // Indices can be initialized right now + for (int i = 0; i < (6*MAX_QUADS_BATCH); i+=6) + { + quads.indices[i] = 4*k; + quads.indices[i+1] = 4*k+1; + quads.indices[i+2] = 4*k+2; + quads.indices[i+3] = 4*k; + quads.indices[i+4] = 4*k+2; + quads.indices[i+5] = 4*k+3; + + k++; + } + + quads.vCounter = 0; + quads.tcCounter = 0; + quads.cCounter = 0; + + TraceLog(LOG_INFO, "[CPU] Default buffers initialized successfully (lines, triangles, quads)"); + //-------------------------------------------------------------------------------------------- + + // [GPU] Upload vertex data and initialize VAOs/VBOs (lines, triangles, quads) + // NOTE: Default buffers are linked to use currentShader (defaultShader) + //-------------------------------------------------------------------------------------------- + + // Upload and link lines vertex buffers + if (vaoSupported) + { + // Initialize Lines VAO + glGenVertexArrays(1, &lines.vaoId); + glBindVertexArray(lines.vaoId); + } + + // Lines - Vertex buffers binding and attributes enable + // Vertex position buffer (shader-location = 0) + glGenBuffers(2, &lines.vboId[0]); + glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[0]); + glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*2*MAX_LINES_BATCH, lines.vertices, GL_DYNAMIC_DRAW); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); + + // Vertex color buffer (shader-location = 3) + glGenBuffers(2, &lines.vboId[1]); + glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[1]); + glBufferData(GL_ARRAY_BUFFER, sizeof(unsigned char)*4*2*MAX_LINES_BATCH, lines.colors, GL_DYNAMIC_DRAW); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); + + if (vaoSupported) TraceLog(LOG_INFO, "[VAO ID %i] Default buffers VAO initialized successfully (lines)", lines.vaoId); + else TraceLog(LOG_INFO, "[VBO ID %i][VBO ID %i] Default buffers VBOs initialized successfully (lines)", lines.vboId[0], lines.vboId[1]); + + // Upload and link triangles vertex buffers + if (vaoSupported) + { + // Initialize Triangles VAO + glGenVertexArrays(1, &triangles.vaoId); + glBindVertexArray(triangles.vaoId); + } + + // Triangles - Vertex buffers binding and attributes enable + // Vertex position buffer (shader-location = 0) + glGenBuffers(1, &triangles.vboId[0]); + glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[0]); + glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*3*MAX_TRIANGLES_BATCH, triangles.vertices, GL_DYNAMIC_DRAW); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); + + // Vertex color buffer (shader-location = 3) + glGenBuffers(1, &triangles.vboId[1]); + glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[1]); + glBufferData(GL_ARRAY_BUFFER, sizeof(unsigned char)*4*3*MAX_TRIANGLES_BATCH, triangles.colors, GL_DYNAMIC_DRAW); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); + + if (vaoSupported) TraceLog(LOG_INFO, "[VAO ID %i] Default buffers VAO initialized successfully (triangles)", triangles.vaoId); + else TraceLog(LOG_INFO, "[VBO ID %i][VBO ID %i] Default buffers VBOs initialized successfully (triangles)", triangles.vboId[0], triangles.vboId[1]); + + // Upload and link quads vertex buffers + if (vaoSupported) + { + // Initialize Quads VAO + glGenVertexArrays(1, &quads.vaoId); + glBindVertexArray(quads.vaoId); + } + + // Quads - Vertex buffers binding and attributes enable + // Vertex position buffer (shader-location = 0) + glGenBuffers(1, &quads.vboId[0]); + glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[0]); + glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*4*MAX_QUADS_BATCH, quads.vertices, GL_DYNAMIC_DRAW); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); + + // Vertex texcoord buffer (shader-location = 1) + glGenBuffers(1, &quads.vboId[1]); + glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[1]); + glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*4*MAX_QUADS_BATCH, quads.texcoords, GL_DYNAMIC_DRAW); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_TEXCOORD01]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_TEXCOORD01], 2, GL_FLOAT, 0, 0, 0); + + // Vertex color buffer (shader-location = 3) + glGenBuffers(1, &quads.vboId[2]); + glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[2]); + glBufferData(GL_ARRAY_BUFFER, sizeof(unsigned char)*4*4*MAX_QUADS_BATCH, quads.colors, GL_DYNAMIC_DRAW); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); + + // Fill index buffer + glGenBuffers(1, &quads.vboId[3]); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, quads.vboId[3]); +#if defined(GRAPHICS_API_OPENGL_33) + glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(int)*6*MAX_QUADS_BATCH, quads.indices, GL_STATIC_DRAW); +#elif defined(GRAPHICS_API_OPENGL_ES2) + glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(short)*6*MAX_QUADS_BATCH, quads.indices, GL_STATIC_DRAW); +#endif + + if (vaoSupported) TraceLog(LOG_INFO, "[VAO ID %i] Default buffers VAO initialized successfully (quads)", quads.vaoId); + else TraceLog(LOG_INFO, "[VBO ID %i][VBO ID %i][VBO ID %i][VBO ID %i] Default buffers VBOs initialized successfully (quads)", quads.vboId[0], quads.vboId[1], quads.vboId[2], quads.vboId[3]); + + // Unbind the current VAO + if (vaoSupported) glBindVertexArray(0); + //-------------------------------------------------------------------------------------------- +} + +// Update default internal buffers (VAOs/VBOs) with vertex array data +// NOTE: If there is not vertex data, buffers doesn't need to be updated (vertexCount > 0) +// TODO: If no data changed on the CPU arrays --> No need to re-update GPU arrays (change flag required) +static void UpdateBuffersDefault(void) +{ + // Update lines vertex buffers + if (lines.vCounter > 0) + { + // Activate Lines VAO + if (vaoSupported) glBindVertexArray(lines.vaoId); + + // Lines - vertex positions buffer + glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[0]); + //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*2*MAX_LINES_BATCH, lines.vertices, GL_DYNAMIC_DRAW); + glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*3*lines.vCounter, lines.vertices); // target - offset (in bytes) - size (in bytes) - data pointer + + // Lines - colors buffer + glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[1]); + //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*2*MAX_LINES_BATCH, lines.colors, GL_DYNAMIC_DRAW); + glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(unsigned char)*4*lines.cCounter, lines.colors); + } + + // Update triangles vertex buffers + if (triangles.vCounter > 0) + { + // Activate Triangles VAO + if (vaoSupported) glBindVertexArray(triangles.vaoId); + + // Triangles - vertex positions buffer + glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[0]); + //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*3*MAX_TRIANGLES_BATCH, triangles.vertices, GL_DYNAMIC_DRAW); + glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*3*triangles.vCounter, triangles.vertices); + + // Triangles - colors buffer + glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[1]); + //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*3*MAX_TRIANGLES_BATCH, triangles.colors, GL_DYNAMIC_DRAW); + glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(unsigned char)*4*triangles.cCounter, triangles.colors); + } + + // Update quads vertex buffers + if (quads.vCounter > 0) + { + // Activate Quads VAO + if (vaoSupported) glBindVertexArray(quads.vaoId); + + // Quads - vertex positions buffer + glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[0]); + //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*4*MAX_QUADS_BATCH, quads.vertices, GL_DYNAMIC_DRAW); + glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*3*quads.vCounter, quads.vertices); + + // Quads - texture coordinates buffer + glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[1]); + //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*4*MAX_QUADS_BATCH, quads.texcoords, GL_DYNAMIC_DRAW); + glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*2*quads.vCounter, quads.texcoords); + + // Quads - colors buffer + glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[2]); + //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*4*MAX_QUADS_BATCH, quads.colors, GL_DYNAMIC_DRAW); + glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(unsigned char)*4*quads.vCounter, quads.colors); + + // Another option would be using buffer mapping... + //quads.vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_READ_WRITE); + // Now we can modify vertices + //glUnmapBuffer(GL_ARRAY_BUFFER); + } + //-------------------------------------------------------------- + + // Unbind the current VAO + if (vaoSupported) glBindVertexArray(0); +} + +// Draw default internal buffers vertex data +// NOTE: We draw in this order: lines, triangles, quads +static void DrawBuffersDefault(void) +{ + Matrix matProjection = projection; + Matrix matModelView = modelview; + + int eyesCount = 1; +#if defined(SUPPORT_VR_SIMULATOR) + if (vrStereoRender) eyesCount = 2; +#endif + + for (int eye = 0; eye < eyesCount; eye++) + { + #if defined(SUPPORT_VR_SIMULATOR) + if (eyesCount == 2) SetStereoView(eye, matProjection, matModelView); + #endif + + // Set current shader and upload current MVP matrix + if ((lines.vCounter > 0) || (triangles.vCounter > 0) || (quads.vCounter > 0)) + { + glUseProgram(currentShader.id); + + // Create modelview-projection matrix + Matrix matMVP = MatrixMultiply(modelview, projection); + + glUniformMatrix4fv(currentShader.locs[LOC_MATRIX_MVP], 1, false, MatrixToFloat(matMVP)); + glUniform4f(currentShader.locs[LOC_COLOR_DIFFUSE], 1.0f, 1.0f, 1.0f, 1.0f); + glUniform1i(currentShader.locs[LOC_MAP_DIFFUSE], 0); + + // NOTE: Additional map textures not considered for default buffers drawing + } + + // Draw lines buffers + if (lines.vCounter > 0) + { + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, whiteTexture); + + if (vaoSupported) + { + glBindVertexArray(lines.vaoId); + } + else + { + // Bind vertex attrib: position (shader-location = 0) + glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[0]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); + + // Bind vertex attrib: color (shader-location = 3) + glBindBuffer(GL_ARRAY_BUFFER, lines.vboId[1]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); + } + + glDrawArrays(GL_LINES, 0, lines.vCounter); + + if (!vaoSupported) glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindTexture(GL_TEXTURE_2D, 0); + } + + // Draw triangles buffers + if (triangles.vCounter > 0) + { + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, whiteTexture); + + if (vaoSupported) + { + glBindVertexArray(triangles.vaoId); + } + else + { + // Bind vertex attrib: position (shader-location = 0) + glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[0]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); + + // Bind vertex attrib: color (shader-location = 3) + glBindBuffer(GL_ARRAY_BUFFER, triangles.vboId[1]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); + } + + glDrawArrays(GL_TRIANGLES, 0, triangles.vCounter); + + if (!vaoSupported) glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindTexture(GL_TEXTURE_2D, 0); + } + + // Draw quads buffers + if (quads.vCounter > 0) + { + int quadsCount = 0; + int numIndicesToProcess = 0; + int indicesOffset = 0; + + if (vaoSupported) + { + glBindVertexArray(quads.vaoId); + } + else + { + // Bind vertex attrib: position (shader-location = 0) + glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[0]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_POSITION]); + + // Bind vertex attrib: texcoord (shader-location = 1) + glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[1]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_TEXCOORD01], 2, GL_FLOAT, 0, 0, 0); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_TEXCOORD01]); + + // Bind vertex attrib: color (shader-location = 3) + glBindBuffer(GL_ARRAY_BUFFER, quads.vboId[2]); + glVertexAttribPointer(currentShader.locs[LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); + glEnableVertexAttribArray(currentShader.locs[LOC_VERTEX_COLOR]); + + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, quads.vboId[3]); + } + + //TraceLog(LOG_DEBUG, "Draws required per frame: %i", drawsCounter); + + for (int i = 0; i < drawsCounter; i++) + { + quadsCount = draws[i].vertexCount/4; + numIndicesToProcess = quadsCount*6; // Get number of Quads*6 index by Quad + + //TraceLog(LOG_DEBUG, "Quads to render: %i - Vertex Count: %i", quadsCount, draws[i].vertexCount); + + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, draws[i].textureId); + + // NOTE: The final parameter tells the GPU the offset in bytes from the start of the index buffer to the location of the first index to process + #if defined(GRAPHICS_API_OPENGL_33) + glDrawElements(GL_TRIANGLES, numIndicesToProcess, GL_UNSIGNED_INT, (GLvoid *)(sizeof(GLuint)*indicesOffset)); + #elif defined(GRAPHICS_API_OPENGL_ES2) + glDrawElements(GL_TRIANGLES, numIndicesToProcess, GL_UNSIGNED_SHORT, (GLvoid *)(sizeof(GLushort)*indicesOffset)); + #endif + //GLenum err; + //if ((err = glGetError()) != GL_NO_ERROR) TraceLog(LOG_INFO, "OpenGL error: %i", (int)err); //GL_INVALID_ENUM! + + indicesOffset += draws[i].vertexCount/4*6; + } + + if (!vaoSupported) + { + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); + } + + glBindTexture(GL_TEXTURE_2D, 0); // Unbind textures + } + + if (vaoSupported) glBindVertexArray(0); // Unbind VAO + + glUseProgram(0); // Unbind shader program + } + + // Reset draws counter + drawsCounter = 1; + draws[0].textureId = whiteTexture; + draws[0].vertexCount = 0; + + // Reset vertex counters for next frame + lines.vCounter = 0; + lines.cCounter = 0; + triangles.vCounter = 0; + triangles.cCounter = 0; + quads.vCounter = 0; + quads.tcCounter = 0; + quads.cCounter = 0; + + // Reset depth for next draw + currentDepth = -1.0f; + + // Restore projection/modelview matrices + projection = matProjection; + modelview = matModelView; +} + +// Unload default internal buffers vertex data from CPU and GPU +static void UnloadBuffersDefault(void) +{ + // Unbind everything + if (vaoSupported) glBindVertexArray(0); + glDisableVertexAttribArray(0); + glDisableVertexAttribArray(1); + glDisableVertexAttribArray(2); + glDisableVertexAttribArray(3); + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); + + // Delete VBOs from GPU (VRAM) + glDeleteBuffers(1, &lines.vboId[0]); + glDeleteBuffers(1, &lines.vboId[1]); + glDeleteBuffers(1, &triangles.vboId[0]); + glDeleteBuffers(1, &triangles.vboId[1]); + glDeleteBuffers(1, &quads.vboId[0]); + glDeleteBuffers(1, &quads.vboId[1]); + glDeleteBuffers(1, &quads.vboId[2]); + glDeleteBuffers(1, &quads.vboId[3]); + + if (vaoSupported) + { + // Delete VAOs from GPU (VRAM) + glDeleteVertexArrays(1, &lines.vaoId); + glDeleteVertexArrays(1, &triangles.vaoId); + glDeleteVertexArrays(1, &quads.vaoId); + } + + // Free vertex arrays memory from CPU (RAM) + free(lines.vertices); + free(lines.colors); + + free(triangles.vertices); + free(triangles.colors); + + free(quads.vertices); + free(quads.texcoords); + free(quads.colors); + free(quads.indices); +} + +// Renders a 1x1 XY quad in NDC +static void GenDrawQuad(void) +{ + unsigned int quadVAO = 0; + unsigned int quadVBO = 0; + + float vertices[] = { + // Positions // Texture Coords + -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, + -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, + 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, + 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, + }; + + // Set up plane VAO + glGenVertexArrays(1, &quadVAO); + glGenBuffers(1, &quadVBO); + glBindVertexArray(quadVAO); + + // Fill buffer + glBindBuffer(GL_ARRAY_BUFFER, quadVBO); + glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), &vertices, GL_STATIC_DRAW); + + // Link vertex attributes + glEnableVertexAttribArray(0); + glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5*sizeof(float), (void *)0); + glEnableVertexAttribArray(1); + glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5*sizeof(float), (void *)(3*sizeof(float))); + + // Draw quad + glBindVertexArray(quadVAO); + glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); + glBindVertexArray(0); + + glDeleteBuffers(1, &quadVBO); + glDeleteVertexArrays(1, &quadVAO); +} + +// Renders a 1x1 3D cube in NDC +static void GenDrawCube(void) +{ + unsigned int cubeVAO = 0; + unsigned int cubeVBO = 0; + + float vertices[] = { + -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, + 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f, + 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, + 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f, + -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, + -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f, + -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, + 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, + 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, + 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, + -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, + -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, + -1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f, + -1.0f, 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 1.0f, + -1.0f, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, + -1.0f, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, + -1.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, + -1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f, + 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, + 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, + 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, + 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, + 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, + 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, + -1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f, + 1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 1.0f, + 1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f, + 1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f, + -1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, + -1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f, + -1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, + 1.0f, 1.0f , 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, + 1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, + 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, + -1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, + -1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f + }; + + // Set up cube VAO + glGenVertexArrays(1, &cubeVAO); + glGenBuffers(1, &cubeVBO); + + // Fill buffer + glBindBuffer(GL_ARRAY_BUFFER, cubeVBO); + glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); + + // Link vertex attributes + glBindVertexArray(cubeVAO); + glEnableVertexAttribArray(0); + glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8*sizeof(float), (void *)0); + glEnableVertexAttribArray(1); + glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8*sizeof(float), (void *)(3*sizeof(float))); + glEnableVertexAttribArray(2); + glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8*sizeof(float), (void *)(6*sizeof(float))); + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindVertexArray(0); + + // Draw cube + glBindVertexArray(cubeVAO); + glDrawArrays(GL_TRIANGLES, 0, 36); + glBindVertexArray(0); + + glDeleteBuffers(1, &cubeVBO); + glDeleteVertexArrays(1, &cubeVAO); +} + +#if defined(SUPPORT_VR_SIMULATOR) +// Configure stereo rendering (including distortion shader) with HMD device parameters +// NOTE: It modifies the global variable: VrStereoConfig vrConfig +static void SetStereoConfig(VrDeviceInfo hmd) +{ + // Compute aspect ratio + float aspect = ((float)hmd.hResolution*0.5f)/(float)hmd.vResolution; + + // Compute lens parameters + float lensShift = (hmd.hScreenSize*0.25f - hmd.lensSeparationDistance*0.5f)/hmd.hScreenSize; + float leftLensCenter[2] = { 0.25f + lensShift, 0.5f }; + float rightLensCenter[2] = { 0.75f - lensShift, 0.5f }; + float leftScreenCenter[2] = { 0.25f, 0.5f }; + float rightScreenCenter[2] = { 0.75f, 0.5f }; + + // Compute distortion scale parameters + // NOTE: To get lens max radius, lensShift must be normalized to [-1..1] + float lensRadius = fabs(-1.0f - 4.0f*lensShift); + float lensRadiusSq = lensRadius*lensRadius; + float distortionScale = hmd.lensDistortionValues[0] + + hmd.lensDistortionValues[1]*lensRadiusSq + + hmd.lensDistortionValues[2]*lensRadiusSq*lensRadiusSq + + hmd.lensDistortionValues[3]*lensRadiusSq*lensRadiusSq*lensRadiusSq; + + TraceLog(LOG_DEBUG, "VR: Distortion Scale: %f", distortionScale); + + float normScreenWidth = 0.5f; + float normScreenHeight = 1.0f; + float scaleIn[2] = { 2.0f/normScreenWidth, 2.0f/normScreenHeight/aspect }; + float scale[2] = { normScreenWidth*0.5f/distortionScale, normScreenHeight*0.5f*aspect/distortionScale }; + + TraceLog(LOG_DEBUG, "VR: Distortion Shader: LeftLensCenter = { %f, %f }", leftLensCenter[0], leftLensCenter[1]); + TraceLog(LOG_DEBUG, "VR: Distortion Shader: RightLensCenter = { %f, %f }", rightLensCenter[0], rightLensCenter[1]); + TraceLog(LOG_DEBUG, "VR: Distortion Shader: Scale = { %f, %f }", scale[0], scale[1]); + TraceLog(LOG_DEBUG, "VR: Distortion Shader: ScaleIn = { %f, %f }", scaleIn[0], scaleIn[1]); + +#if defined(SUPPORT_DISTORTION_SHADER) + // Update distortion shader with lens and distortion-scale parameters + SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "leftLensCenter"), leftLensCenter, 2); + SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "rightLensCenter"), rightLensCenter, 2); + SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "leftScreenCenter"), leftScreenCenter, 2); + SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "rightScreenCenter"), rightScreenCenter, 2); + + SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "scale"), scale, 2); + SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "scaleIn"), scaleIn, 2); + SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "hmdWarpParam"), hmd.lensDistortionValues, 4); + SetShaderValue(vrConfig.distortionShader, GetShaderLocation(vrConfig.distortionShader, "chromaAbParam"), hmd.chromaAbCorrection, 4); +#endif + + // Fovy is normally computed with: 2*atan2(hmd.vScreenSize, 2*hmd.eyeToScreenDistance) + // ...but with lens distortion it is increased (see Oculus SDK Documentation) + //float fovy = 2.0f*atan2(hmd.vScreenSize*0.5f*distortionScale, hmd.eyeToScreenDistance); // Really need distortionScale? + float fovy = 2.0f*(float)atan2(hmd.vScreenSize*0.5f, hmd.eyeToScreenDistance); + + // Compute camera projection matrices + float projOffset = 4.0f*lensShift; // Scaled to projection space coordinates [-1..1] + Matrix proj = MatrixPerspective(fovy, aspect, 0.01, 1000.0); + vrConfig.eyesProjection[0] = MatrixMultiply(proj, MatrixTranslate(projOffset, 0.0f, 0.0f)); + vrConfig.eyesProjection[1] = MatrixMultiply(proj, MatrixTranslate(-projOffset, 0.0f, 0.0f)); + + // Compute camera transformation matrices + // NOTE: Camera movement might seem more natural if we model the head. + // Our axis of rotation is the base of our head, so we might want to add + // some y (base of head to eye level) and -z (center of head to eye protrusion) to the camera positions. + vrConfig.eyesViewOffset[0] = MatrixTranslate(-hmd.interpupillaryDistance*0.5f, 0.075f, 0.045f); + vrConfig.eyesViewOffset[1] = MatrixTranslate(hmd.interpupillaryDistance*0.5f, 0.075f, 0.045f); + + // Compute eyes Viewports + vrConfig.eyesViewport[0] = (Rectangle){ 0, 0, hmd.hResolution/2, hmd.vResolution }; + vrConfig.eyesViewport[1] = (Rectangle){ hmd.hResolution/2, 0, hmd.hResolution/2, hmd.vResolution }; +} + +// Set internal projection and modelview matrix depending on eyes tracking data +static void SetStereoView(int eye, Matrix matProjection, Matrix matModelView) +{ + Matrix eyeProjection = matProjection; + Matrix eyeModelView = matModelView; + + // Setup viewport and projection/modelview matrices using tracking data + rlViewport(eye*screenWidth/2, 0, screenWidth/2, screenHeight); + + // Apply view offset to modelview matrix + eyeModelView = MatrixMultiply(matModelView, vrConfig.eyesViewOffset[eye]); + + // Set current eye projection matrix + eyeProjection = vrConfig.eyesProjection[eye]; + + SetMatrixModelview(eyeModelView); + SetMatrixProjection(eyeProjection); +} +#endif // defined(SUPPORT_VR_SIMULATOR) + +#endif //defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + +// Get OpenGL internal formats and data type from raylib PixelFormat +static void GetGlFormats(int format, int *glInternalFormat, int *glFormat, int *glType) +{ + *glInternalFormat = -1; + *glFormat = -1; + *glType = -1; + + switch (format) + { + #if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_21) || defined(GRAPHICS_API_OPENGL_ES2) + // NOTE: on OpenGL ES 2.0 (WebGL), internalFormat must match format and options allowed are: GL_LUMINANCE, GL_RGB, GL_RGBA + case UNCOMPRESSED_GRAYSCALE: *glInternalFormat = GL_LUMINANCE; *glFormat = GL_LUMINANCE; *glType = GL_UNSIGNED_BYTE; break; + case UNCOMPRESSED_GRAY_ALPHA: *glInternalFormat = GL_LUMINANCE_ALPHA; *glFormat = GL_LUMINANCE_ALPHA; *glType = GL_UNSIGNED_BYTE; break; + case UNCOMPRESSED_R5G6B5: *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_UNSIGNED_SHORT_5_6_5; break; + case UNCOMPRESSED_R8G8B8: *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_UNSIGNED_BYTE; break; + case UNCOMPRESSED_R5G5B5A1: *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_5_5_5_1; break; + case UNCOMPRESSED_R4G4B4A4: *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_4_4_4_4; break; + case UNCOMPRESSED_R8G8B8A8: *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_BYTE; break; + #if !defined(GRAPHICS_API_OPENGL_11) + case UNCOMPRESSED_R32: if (texFloatSupported) *glInternalFormat = GL_LUMINANCE; *glFormat = GL_LUMINANCE; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float + case UNCOMPRESSED_R32G32B32: if (texFloatSupported) *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float + case UNCOMPRESSED_R32G32B32A32: if (texFloatSupported) *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float + #endif + #elif defined(GRAPHICS_API_OPENGL_33) + case UNCOMPRESSED_GRAYSCALE: *glInternalFormat = GL_R8; *glFormat = GL_RED; *glType = GL_UNSIGNED_BYTE; break; + case UNCOMPRESSED_GRAY_ALPHA: *glInternalFormat = GL_RG8; *glFormat = GL_RG; *glType = GL_UNSIGNED_BYTE; break; + case UNCOMPRESSED_R5G6B5: *glInternalFormat = GL_RGB565; *glFormat = GL_RGB; *glType = GL_UNSIGNED_SHORT_5_6_5; break; + case UNCOMPRESSED_R8G8B8: *glInternalFormat = GL_RGB8; *glFormat = GL_RGB; *glType = GL_UNSIGNED_BYTE; break; + case UNCOMPRESSED_R5G5B5A1: *glInternalFormat = GL_RGB5_A1; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_5_5_5_1; break; + case UNCOMPRESSED_R4G4B4A4: *glInternalFormat = GL_RGBA4; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_4_4_4_4; break; + case UNCOMPRESSED_R8G8B8A8: *glInternalFormat = GL_RGBA8; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_BYTE; break; + case UNCOMPRESSED_R32: if (texFloatSupported) *glInternalFormat = GL_R32F; *glFormat = GL_RED; *glType = GL_FLOAT; break; + case UNCOMPRESSED_R32G32B32: if (texFloatSupported) *glInternalFormat = GL_RGB32F; *glFormat = GL_RGB; *glType = GL_FLOAT; break; + case UNCOMPRESSED_R32G32B32A32: if (texFloatSupported) *glInternalFormat = GL_RGBA32F; *glFormat = GL_RGBA; *glType = GL_FLOAT; break; + #endif + #if !defined(GRAPHICS_API_OPENGL_11) + case COMPRESSED_DXT1_RGB: if (texCompDXTSupported) *glInternalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; break; + case COMPRESSED_DXT1_RGBA: if (texCompDXTSupported) *glInternalFormat = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; break; + case COMPRESSED_DXT3_RGBA: if (texCompDXTSupported) *glInternalFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; break; + case COMPRESSED_DXT5_RGBA: if (texCompDXTSupported) *glInternalFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; break; + case COMPRESSED_ETC1_RGB: if (texCompETC1Supported) *glInternalFormat = GL_ETC1_RGB8_OES; break; // NOTE: Requires OpenGL ES 2.0 or OpenGL 4.3 + case COMPRESSED_ETC2_RGB: if (texCompETC2Supported) *glInternalFormat = GL_COMPRESSED_RGB8_ETC2; break; // NOTE: Requires OpenGL ES 3.0 or OpenGL 4.3 + case COMPRESSED_ETC2_EAC_RGBA: if (texCompETC2Supported) *glInternalFormat = GL_COMPRESSED_RGBA8_ETC2_EAC; break; // NOTE: Requires OpenGL ES 3.0 or OpenGL 4.3 + case COMPRESSED_PVRT_RGB: if (texCompPVRTSupported) *glInternalFormat = GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG; break; // NOTE: Requires PowerVR GPU + case COMPRESSED_PVRT_RGBA: if (texCompPVRTSupported) *glInternalFormat = GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG; break; // NOTE: Requires PowerVR GPU + case COMPRESSED_ASTC_4x4_RGBA: if (texCompASTCSupported) *glInternalFormat = GL_COMPRESSED_RGBA_ASTC_4x4_KHR; break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 + case COMPRESSED_ASTC_8x8_RGBA: if (texCompASTCSupported) *glInternalFormat = GL_COMPRESSED_RGBA_ASTC_8x8_KHR; break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 + #endif + default: TraceLog(LOG_WARNING, "Texture format not supported"); break; + } +} + +#if defined(GRAPHICS_API_OPENGL_11) +// Mipmaps data is generated after image data +// NOTE: Only works with RGBA (4 bytes) data! +static int GenerateMipmaps(unsigned char *data, int baseWidth, int baseHeight) +{ + int mipmapCount = 1; // Required mipmap levels count (including base level) + int width = baseWidth; + int height = baseHeight; + int size = baseWidth*baseHeight*4; // Size in bytes (will include mipmaps...), RGBA only + + // Count mipmap levels required + while ((width != 1) && (height != 1)) + { + if (width != 1) width /= 2; + if (height != 1) height /= 2; + + TraceLog(LOG_DEBUG, "Next mipmap size: %i x %i", width, height); + + mipmapCount++; + + size += (width*height*4); // Add mipmap size (in bytes) + } + + TraceLog(LOG_DEBUG, "Total mipmaps required: %i", mipmapCount); + TraceLog(LOG_DEBUG, "Total size of data required: %i", size); + + unsigned char *temp = realloc(data, size); + + if (temp != NULL) data = temp; + else TraceLog(LOG_WARNING, "Mipmaps required memory could not be allocated"); + + width = baseWidth; + height = baseHeight; + size = (width*height*4); + + // Generate mipmaps + // NOTE: Every mipmap data is stored after data + Color *image = (Color *)malloc(width*height*sizeof(Color)); + Color *mipmap = NULL; + int offset = 0; + int j = 0; + + for (int i = 0; i < size; i += 4) + { + image[j].r = data[i]; + image[j].g = data[i + 1]; + image[j].b = data[i + 2]; + image[j].a = data[i + 3]; + j++; + } + + TraceLog(LOG_DEBUG, "Mipmap base (%ix%i)", width, height); + + for (int mip = 1; mip < mipmapCount; mip++) + { + mipmap = GenNextMipmap(image, width, height); + + offset += (width*height*4); // Size of last mipmap + j = 0; + + width /= 2; + height /= 2; + size = (width*height*4); // Mipmap size to store after offset + + // Add mipmap to data + for (int i = 0; i < size; i += 4) + { + data[offset + i] = mipmap[j].r; + data[offset + i + 1] = mipmap[j].g; + data[offset + i + 2] = mipmap[j].b; + data[offset + i + 3] = mipmap[j].a; + j++; + } + + free(image); + + image = mipmap; + mipmap = NULL; + } + + free(mipmap); // free mipmap data + + return mipmapCount; +} + +// Manual mipmap generation (basic scaling algorithm) +static Color *GenNextMipmap(Color *srcData, int srcWidth, int srcHeight) +{ + int x2, y2; + Color prow, pcol; + + int width = srcWidth/2; + int height = srcHeight/2; + + Color *mipmap = (Color *)malloc(width*height*sizeof(Color)); + + // Scaling algorithm works perfectly (box-filter) + for (int y = 0; y < height; y++) + { + y2 = 2*y; + + for (int x = 0; x < width; x++) + { + x2 = 2*x; + + prow.r = (srcData[y2*srcWidth + x2].r + srcData[y2*srcWidth + x2 + 1].r)/2; + prow.g = (srcData[y2*srcWidth + x2].g + srcData[y2*srcWidth + x2 + 1].g)/2; + prow.b = (srcData[y2*srcWidth + x2].b + srcData[y2*srcWidth + x2 + 1].b)/2; + prow.a = (srcData[y2*srcWidth + x2].a + srcData[y2*srcWidth + x2 + 1].a)/2; + + pcol.r = (srcData[(y2+1)*srcWidth + x2].r + srcData[(y2+1)*srcWidth + x2 + 1].r)/2; + pcol.g = (srcData[(y2+1)*srcWidth + x2].g + srcData[(y2+1)*srcWidth + x2 + 1].g)/2; + pcol.b = (srcData[(y2+1)*srcWidth + x2].b + srcData[(y2+1)*srcWidth + x2 + 1].b)/2; + pcol.a = (srcData[(y2+1)*srcWidth + x2].a + srcData[(y2+1)*srcWidth + x2 + 1].a)/2; + + mipmap[y*width + x].r = (prow.r + pcol.r)/2; + mipmap[y*width + x].g = (prow.g + pcol.g)/2; + mipmap[y*width + x].b = (prow.b + pcol.b)/2; + mipmap[y*width + x].a = (prow.a + pcol.a)/2; + } + } + + TraceLog(LOG_DEBUG, "Mipmap generated successfully (%ix%i)", width, height); + + return mipmap; +} +#endif + +#if defined(RLGL_STANDALONE) +// Show trace log messages (LOG_INFO, LOG_WARNING, LOG_ERROR, LOG_DEBUG) +void TraceLog(int msgType, const char *text, ...) +{ + va_list args; + va_start(args, text); + + switch (msgType) + { + case LOG_INFO: fprintf(stdout, "INFO: "); break; + case LOG_ERROR: fprintf(stdout, "ERROR: "); break; + case LOG_WARNING: fprintf(stdout, "WARNING: "); break; + case LOG_DEBUG: fprintf(stdout, "DEBUG: "); break; + default: break; + } + + vfprintf(stdout, text, args); + fprintf(stdout, "\n"); + + va_end(args); + + if (msgType == LOG_ERROR) exit(1); +} +#endif + +#endif // RLGL_IMPLEMENTATION
\ No newline at end of file diff --git a/src/shader_distortion.h b/src/shader_distortion.h deleted file mode 100644 index 3b37c630..00000000 --- a/src/shader_distortion.h +++ /dev/null @@ -1,106 +0,0 @@ - -// Vertex shader definition to embed, no external file required -static const char distortionVShaderStr[] = -#if defined(GRAPHICS_API_OPENGL_21) -"#version 120 \n" -#elif defined(GRAPHICS_API_OPENGL_ES2) -"#version 100 \n" -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) -"attribute vec3 vertexPosition; \n" -"attribute vec2 vertexTexCoord; \n" -"attribute vec4 vertexColor; \n" -"varying vec2 fragTexCoord; \n" -"varying vec4 fragColor; \n" -#elif defined(GRAPHICS_API_OPENGL_33) -"#version 330 \n" -"in vec3 vertexPosition; \n" -"in vec2 vertexTexCoord; \n" -"in vec4 vertexColor; \n" -"out vec2 fragTexCoord; \n" -"out vec4 fragColor; \n" -#endif -"uniform mat4 mvp; \n" -"void main() \n" -"{ \n" -" fragTexCoord = vertexTexCoord; \n" -" fragColor = vertexColor; \n" -" gl_Position = mvp*vec4(vertexPosition, 1.0); \n" -"} \n"; - -// Fragment shader definition to embed, no external file required -static const char distortionFShaderStr[] = -#if defined(GRAPHICS_API_OPENGL_21) -"#version 120 \n" -#elif defined(GRAPHICS_API_OPENGL_ES2) -"#version 100 \n" -"precision mediump float; \n" // precision required for OpenGL ES2 (WebGL) -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) -"varying vec2 fragTexCoord; \n" -"varying vec4 fragColor; \n" -#elif defined(GRAPHICS_API_OPENGL_33) -"#version 330 \n" -"in vec2 fragTexCoord; \n" -"in vec4 fragColor; \n" -"out vec4 finalColor; \n" -#endif -"uniform sampler2D texture0; \n" -#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) -"uniform vec2 leftLensCenter; \n" -"uniform vec2 rightLensCenter; \n" -"uniform vec2 leftScreenCenter; \n" -"uniform vec2 rightScreenCenter; \n" -"uniform vec2 scale; \n" -"uniform vec2 scaleIn; \n" -"uniform vec4 hmdWarpParam; \n" -"uniform vec4 chromaAbParam; \n" -#elif defined(GRAPHICS_API_OPENGL_33) -"uniform vec2 leftLensCenter = vec2(0.288, 0.5); \n" -"uniform vec2 rightLensCenter = vec2(0.712, 0.5); \n" -"uniform vec2 leftScreenCenter = vec2(0.25, 0.5); \n" -"uniform vec2 rightScreenCenter = vec2(0.75, 0.5); \n" -"uniform vec2 scale = vec2(0.25, 0.45); \n" -"uniform vec2 scaleIn = vec2(4, 2.2222); \n" -"uniform vec4 hmdWarpParam = vec4(1, 0.22, 0.24, 0); \n" -"uniform vec4 chromaAbParam = vec4(0.996, -0.004, 1.014, 0.0); \n" -#endif -"void main() \n" -"{ \n" -" vec2 lensCenter = fragTexCoord.x < 0.5 ? leftLensCenter : rightLensCenter; \n" -" vec2 screenCenter = fragTexCoord.x < 0.5 ? leftScreenCenter : rightScreenCenter; \n" -" vec2 theta = (fragTexCoord - lensCenter)*scaleIn; \n" -" float rSq = theta.x*theta.x + theta.y*theta.y; \n" -" vec2 theta1 = theta*(hmdWarpParam.x + hmdWarpParam.y*rSq + hmdWarpParam.z*rSq*rSq + hmdWarpParam.w*rSq*rSq*rSq); \n" -" vec2 thetaBlue = theta1*(chromaAbParam.z + chromaAbParam.w*rSq); \n" -" vec2 tcBlue = lensCenter + scale*thetaBlue; \n" -" if (any(bvec2(clamp(tcBlue, screenCenter - vec2(0.25, 0.5), screenCenter + vec2(0.25, 0.5)) - tcBlue))) \n" -" { \n" -#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) -" gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0); \n" -#elif defined(GRAPHICS_API_OPENGL_33) -" finalColor = vec4(0.0, 0.0, 0.0, 1.0); \n" -#endif -" } \n" -" else \n" -" { \n" -#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) -" float blue = texture2D(texture0, tcBlue).b; \n" -" vec2 tcGreen = lensCenter + scale*theta1; \n" -" float green = texture2D(texture0, tcGreen).g; \n" -#elif defined(GRAPHICS_API_OPENGL_33) -" float blue = texture(texture0, tcBlue).b; \n" -" vec2 tcGreen = lensCenter + scale*theta1; \n" -" float green = texture(texture0, tcGreen).g; \n" -#endif -" vec2 thetaRed = theta1*(chromaAbParam.x + chromaAbParam.y*rSq); \n" -" vec2 tcRed = lensCenter + scale*thetaRed; \n" -#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21) -" float red = texture2D(texture0, tcRed).r; \n" -" gl_FragColor = vec4(red, green, blue, 1.0); \n" -#elif defined(GRAPHICS_API_OPENGL_33) -" float red = texture(texture0, tcRed).r; \n" -" finalColor = vec4(red, green, blue, 1.0); \n" -#endif -" } \n" -"} \n"; |