diff options
Diffstat (limited to 'src/rlgl.c')
| -rw-r--r-- | src/rlgl.c | 200 |
1 files changed, 99 insertions, 101 deletions
@@ -283,14 +283,24 @@ static int GenerateMipmaps(unsigned char *data, int baseWidth, int baseHeight); static pixel *GenNextMipmap(pixel *srcData, int srcWidth, int srcHeight); #endif -#if defined(GRAPHICS_API_OPENGL_ES2) -static char** StringSplit(char *baseString, const char delimiter, int *numExt); -#endif - #if defined(RLGL_STANDALONE) static void TraceLog(int msgType, const char *text, ...); #endif +#if defined(GRAPHICS_API_OPENGL_ES2) +// NOTE: strdup() functions replacement (not C99, POSIX function, not available on emscripten) +// Duplicates a string, returning an identical malloc'd string +char *mystrdup(const char *str) +{ + size_t len = strlen(str) + 1; + void *newstr = malloc(len); + + if (newstr == NULL) return NULL; + + return (char *)memcpy(newstr, str, len); +} +#endif + //---------------------------------------------------------------------------------- // Module Functions Definition - Matrix operations //---------------------------------------------------------------------------------- @@ -863,7 +873,7 @@ void rlglInit(void) #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) // Get supported extensions list - GLint numExt; + GLint numExt = 0; #if defined(GRAPHICS_API_OPENGL_33) @@ -923,21 +933,39 @@ void rlglInit(void) // NOTE: We don't need to check again supported extensions but we do (in case GLEW is replaced sometime) // We get a list of available extensions and we check for some of them (compressed textures) glGetIntegerv(GL_NUM_EXTENSIONS, &numExt); - const char *ext[numExt]; + const char *extList[numExt]; - for (int i = 0; i < numExt; i++) ext[i] = (char *)glGetStringi(GL_EXTENSIONS, i); + 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 string + 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) + char *extensionsDup = mystrdup(extensions); // NOTE: String could be splitted using strtok() function (string.h) - char **ext = StringSplit(extensions, ' ', &numExt); + // 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(INFO, "Number of supported extensions: %i", numExt); // Show supported extensions - //for (int i = 0; i < numExt; i++) TraceLog(INFO, "Supported extension: %s", ext[i]); + //for (int i = 0; i < numExt; i++) TraceLog(INFO, "Supported extension: %s", extList[i]); // Check required extensions for (int i = 0; i < numExt; i++) @@ -945,7 +973,7 @@ void rlglInit(void) #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(ext[i], (const char *)"GL_OES_vertex_array_object") == 0) + if (strcmp(extList[i], (const char *)"GL_OES_vertex_array_object") == 0) { vaoSupported = true; @@ -959,23 +987,23 @@ void rlglInit(void) // Check NPOT textures support // NOTE: Only check on OpenGL ES, OpenGL 3.3 has NPOT textures full support as core feature - if (strcmp(ext[i], (const char *)"GL_OES_texture_npot") == 0) npotSupported = true; + if (strcmp(extList[i], (const char *)"GL_OES_texture_npot") == 0) npotSupported = true; #endif // DDS texture compression support - if (strcmp(ext[i], (const char *)"GL_EXT_texture_compression_s3tc") == 0) texCompDXTSupported = true; + if (strcmp(extList[i], (const char *)"GL_EXT_texture_compression_s3tc") == 0) texCompDXTSupported = true; // ETC1 texture compression support - if (strcmp(ext[i], (const char *)"GL_OES_compressed_ETC1_RGB8_texture") == 0) texCompETC1Supported = true; + if (strcmp(extList[i], (const char *)"GL_OES_compressed_ETC1_RGB8_texture") == 0) texCompETC1Supported = true; // ETC2/EAC texture compression support - if (strcmp(ext[i], (const char *)"GL_ARB_ES3_compatibility") == 0) texCompETC2Supported = true; + if (strcmp(extList[i], (const char *)"GL_ARB_ES3_compatibility") == 0) texCompETC2Supported = true; // PVR texture compression support - if (strcmp(ext[i], (const char *)"GL_IMG_texture_compression_pvrtc") == 0) texCompPVRTSupported = true; + if (strcmp(extList[i], (const char *)"GL_IMG_texture_compression_pvrtc") == 0) texCompPVRTSupported = true; // ASTC texture compression support - if (strcmp(ext[i], (const char *)"GL_KHR_texture_compression_astc_hdr") == 0) texCompASTCSupported = true; + if (strcmp(extList[i], (const char *)"GL_KHR_texture_compression_astc_hdr") == 0) texCompASTCSupported = true; } #if defined(GRAPHICS_API_OPENGL_ES2) @@ -984,9 +1012,6 @@ void rlglInit(void) if (npotSupported) TraceLog(INFO, "[EXTENSION] NPOT textures extension detected, full NPOT textures supported"); else TraceLog(WARNING, "[EXTENSION] NPOT textures extension not found, NPOT textures not supported"); - - // Once supported extensions have been checked, we should free strings memory - free(ext); #endif if (texCompDXTSupported) TraceLog(INFO, "[EXTENSION] DXT compressed textures supported"); @@ -1008,8 +1033,16 @@ void rlglInit(void) // Initialize matrix stack for (int i = 0; i < MATRIX_STACK_SIZE; i++) stack[i] = MatrixIdentity(); + + // Create default white texture for plain colors (required by shader) + unsigned char pixels[4] = { 255, 255, 255, 255 }; // 1 pixel RGBA (4 bytes) + + whiteTexture = rlglLoadTexture(pixels, 1, 1, UNCOMPRESSED_R8G8B8A8, 1); + + if (whiteTexture != 0) TraceLog(INFO, "[TEX ID %i] Base white texture loaded successfully", whiteTexture); + else TraceLog(WARNING, "Base white texture could not be loaded"); - // Init default Shader (GLSL 110) -> Common for GL 3.3+ and ES2 + // Init default Shader (Custom for GL 3.3 and ES2) defaultShader = LoadDefaultShader(); simpleShader = LoadSimpleShader(); //customShader = LoadShader("custom.vs", "custom.fs"); // Works ok @@ -1024,14 +1057,6 @@ void rlglInit(void) for (int i = 0; i < TEMP_VERTEX_BUFFER_SIZE; i++) tempBuffer[i] = VectorZero(); - // Create default white texture for plain colors (required by shader) - unsigned char pixels[4] = { 255, 255, 255, 255 }; // 1 pixel RGBA (4 bytes) - - whiteTexture = rlglLoadTexture(pixels, 1, 1, UNCOMPRESSED_R8G8B8A8, 1); - - if (whiteTexture != 0) TraceLog(INFO, "[TEX ID %i] Base white texture loaded successfully", whiteTexture); - else TraceLog(WARNING, "Base white texture could not be loaded"); - // Init draw calls tracking system draws = (DrawCall *)malloc(sizeof(DrawCall)*MAX_DRAWS_BY_TEXTURE); @@ -1189,6 +1214,7 @@ void rlglClose(void) // Free GPU texture glDeleteTextures(1, &whiteTexture); + TraceLog(INFO, "[TEX ID %i] Unloaded texture data (base white texture) from VRAM", whiteTexture); if (fbo != 0) { @@ -1207,7 +1233,7 @@ void rlglClose(void) rlDeleteVertexArrays(postproQuad.mesh.vaoId); - TraceLog(INFO, "Unloaded postpro quad data"); + TraceLog(INFO, "[FBO %i] Unloaded postprocessing data", fbo); } free(draws); @@ -1768,8 +1794,17 @@ unsigned int rlglLoadTexture(void *data, int width, int height, int textureForma // 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 - 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 + if (npotSupported) + { + 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 @@ -1869,12 +1904,12 @@ Model rlglLoadModel(VertexData mesh) model.mesh = mesh; model.transform = MatrixIdentity(); - -#if defined(GRAPHICS_API_OPENGL_11) model.mesh.vaoId = 0; // Vertex Array Object model.mesh.vboId[0] = 0; // Vertex position VBO model.mesh.vboId[1] = 0; // Texcoords VBO model.mesh.vboId[2] = 0; // Normals VBO + +#if defined(GRAPHICS_API_OPENGL_11) model.texture.id = 0; // No texture required model.shader.id = 0; // No shader used @@ -1882,8 +1917,9 @@ Model rlglLoadModel(VertexData mesh) model.texture.id = whiteTexture; // Default whiteTexture model.texture.width = 1; // Default whiteTexture width model.texture.height = 1; // Default whiteTexture height + model.texture.format = UNCOMPRESSED_R8G8B8A8; // Default whiteTexture format model.shader = simpleShader; // Default model shader - + GLuint vaoModel = 0; // Vertex Array Objects (VAO) GLuint vertexBuffer[3]; // Vertex Buffer Objects (VBO) @@ -2019,6 +2055,8 @@ void *rlglReadTexturePixels(unsigned int textureId, unsigned int format) Shader LoadShader(char *vsFileName, char *fsFileName) { Shader shader; + + shader.id = 0; // Default value in case of loading failure #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) // Shaders loading from external text file @@ -2180,9 +2218,11 @@ unsigned int LoadShaderProgram(char *vShaderStr, char *fShaderStr) // Unload a custom shader from memory void UnloadShader(Shader shader) { - rlDeleteShader(shader.id); - - TraceLog(INFO, "[SHDR ID %i] Unloaded shader program data", shader.id); + if (shader.id != 0) + { + rlDeleteShader(shader.id); + TraceLog(INFO, "[SHDR ID %i] Unloaded shader program data", shader.id); + } } // Set custom shader to be used on batch draw @@ -2242,7 +2282,7 @@ void SetPostproShader(Shader shader) //TraceLog(DEBUG, "Postproquad shader diffuse map id: %i", postproQuad.shader.texDiffuseId); //TraceLog(DEBUG, "Shader diffuse map id: %i", shader.texDiffuseId); #elif defined(GRAPHICS_API_OPENGL_11) - TraceLog(WARNING, "Postprocessing shaders not supported on OpenGL 1.1"); + TraceLog(WARNING, "Shaders not supported on OpenGL 1.1"); #endif } @@ -2287,6 +2327,8 @@ void SetModelShader(Model *model, Shader shader) // NOTE: If SetModelTexture() is called previously, texture is not assigned to new shader if (model->texture.id > 0) model->shader.texDiffuseId = model->texture.id; +#elif (GRAPHICS_API_OPENGL_11) + TraceLog(WARNING, "Shaders not supported on OpenGL 1.1"); #endif } @@ -2527,14 +2569,14 @@ static Shader LoadDefaultShader(void) // Vertex shader directly defined, no external file required #if defined(GRAPHICS_API_OPENGL_33) - char vShaderStr[] = " #version 330 \n" + char vShaderStr[] = "#version 330 \n" "in vec3 vertexPosition; \n" "in vec2 vertexTexCoord; \n" "in vec4 vertexColor; \n" "out vec2 fragTexCoord; \n" "out vec4 tintColor; \n" #elif defined(GRAPHICS_API_OPENGL_ES2) - char vShaderStr[] = " #version 100 \n" + char vShaderStr[] = "#version 100 \n" "attribute vec3 vertexPosition; \n" "attribute vec2 vertexTexCoord; \n" "attribute vec4 vertexColor; \n" @@ -2552,11 +2594,11 @@ static Shader LoadDefaultShader(void) // Fragment shader directly defined, no external file required #if defined(GRAPHICS_API_OPENGL_33) - char fShaderStr[] = " #version 330 \n" + char fShaderStr[] = "#version 330 \n" "in vec2 fragTexCoord; \n" "in vec4 tintColor; \n" #elif defined(GRAPHICS_API_OPENGL_ES2) - char fShaderStr[] = " #version 100 \n" + char fShaderStr[] = "#version 100 \n" "precision mediump float; \n" // precision required for OpenGL ES2 (WebGL) "varying vec2 fragTexCoord; \n" "varying vec4 tintColor; \n" @@ -2590,6 +2632,10 @@ static Shader LoadDefaultShader(void) shader.mapDiffuseLoc = glGetUniformLocation(shader.id, "texture0"); shader.mapNormalLoc = -1; // It can be set later shader.mapSpecularLoc = -1; // It can be set later + + shader.texDiffuseId = whiteTexture; // Default white texture + shader.texNormalId = 0; + shader.texSpecularId = 0; //-------------------------------------------------------------------- return shader; @@ -2607,13 +2653,13 @@ static Shader LoadSimpleShader(void) // Vertex shader directly defined, no external file required #if defined(GRAPHICS_API_OPENGL_33) - char vShaderStr[] = " #version 330 \n" + char vShaderStr[] = "#version 330 \n" "in vec3 vertexPosition; \n" "in vec2 vertexTexCoord; \n" "in vec3 vertexNormal; \n" "out vec2 fragTexCoord; \n" #elif defined(GRAPHICS_API_OPENGL_ES2) - char vShaderStr[] = " #version 100 \n" + char vShaderStr[] = "#version 100 \n" "attribute vec3 vertexPosition; \n" "attribute vec2 vertexTexCoord; \n" "attribute vec3 vertexNormal; \n" @@ -2629,10 +2675,10 @@ static Shader LoadSimpleShader(void) // Fragment shader directly defined, no external file required #if defined(GRAPHICS_API_OPENGL_33) - char fShaderStr[] = " #version 330 \n" - "in vec2 fragTexCoord; \n" + char fShaderStr[] = "#version 330 \n" + "in vec2 fragTexCoord; \n" #elif defined(GRAPHICS_API_OPENGL_ES2) - char fShaderStr[] = " #version 100 \n" + char fShaderStr[] = "#version 100 \n" "precision mediump float; \n" // precision required for OpenGL ES2 (WebGL) "varying vec2 fragTexCoord; \n" #endif @@ -2666,6 +2712,10 @@ static Shader LoadSimpleShader(void) shader.mapDiffuseLoc = glGetUniformLocation(shader.id, "texture0"); shader.mapNormalLoc = -1; // It can be set later shader.mapSpecularLoc = -1; // It can be set later + + shader.texDiffuseId = whiteTexture; // Default white texture + shader.texNormalId = 0; + shader.texSpecularId = 0; //-------------------------------------------------------------------- return shader; @@ -2692,7 +2742,7 @@ static char *TextFileRead(char *fileName) if (count > 0) { - text = (char *)malloc(sizeof(char) * (count + 1)); + text = (char *)malloc(sizeof(char)*(count + 1)); count = fread(text, sizeof(char), count, textFile); text[count] = '\0'; } @@ -3085,55 +3135,3 @@ static void TraceLog(int msgType, const char *text, ...) if (msgType == ERROR) exit(1); } #endif - -#if defined(GRAPHICS_API_OPENGL_ES2) -static char **StringSplit(char *baseString, const char delimiter, int *numExt) -{ - char **result = 0; - int count = 0; - char *tmp = baseString; - char *lastComma = 0; - char delim[2]; - - delim[0] = delimiter; - delim[1] = 0; - - // Count how many elements will be extracted - while (*tmp) - { - if (delimiter == *tmp) - { - count++; - lastComma = tmp; - } - - tmp++; - } - - // Add space for trailing token - count += lastComma < (baseString + strlen(baseString) - 1); - - // Add space for terminating null string - count++; - - result = malloc(sizeof(char *)*count); - - if (result) - { - int idx = 0; - char *token = strtok(baseString, delim); - - while (token) - { - *(result + idx++) = token; - token = strtok(0, delim); - } - - *(result + idx) = 0; - } - - *numExt = (count - 1); - - return result; -} -#endif
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