Merge remote-tracking branch 'refs/remotes/raysan5/develop' into develop

6 files changed, 83 insertions, 43 deletions

diff --git a/src/core.c b/src/core.c
index a94ad48d..08f9a7e2 100644
--- a/src/core.c
+++ b/src/core.c
@@ -562,9 +562,8 @@ void Begin2dMode(Camera2D camera)
     Matrix matOrigin = MatrixTranslate(-camera.target.x, -camera.target.y, 0.0f);
     Matrix matRotation = MatrixRotate((Vector3){ 0.0f, 0.0f, 1.0f }, camera.rotation*DEG2RAD);
     Matrix matScale = MatrixScale(camera.zoom, camera.zoom, 1.0f);
-    
     Matrix matTranslation = MatrixTranslate(camera.offset.x + camera.target.x, camera.offset.y + camera.target.y, 0.0f);
-
+    
     Matrix matTransform = MatrixMultiply(MatrixMultiply(matOrigin, MatrixMultiply(matScale, matRotation)), matTranslation);
     
     rlMultMatrixf(MatrixToFloat(matTransform));
@@ -627,11 +626,24 @@ void BeginTextureMode(RenderTexture2D target)
 {
     rlglDraw();                         // Draw Buffers (Only OpenGL 3+ and ES2)
 
-    rlEnableRenderTexture(target.id);
-    
+    rlEnableRenderTexture(target.id);   // Enable render target
+
     rlClearScreenBuffers();             // Clear render texture buffers
+    
+    // Set viewport to framebuffer size
+    rlViewport(0, 0, target.texture.width, target.texture.height); 
+    
+    rlMatrixMode(RL_PROJECTION);        // Switch to PROJECTION matrix
+    rlLoadIdentity();                   // Reset current matrix (PROJECTION)
 
+    // Set orthographic projection to current framebuffer size
+    // NOTE: Configured top-left corner as (0, 0)
+    rlOrtho(0, target.texture.width, target.texture.height, 0, 0.0f, 1.0f);        
+
+    rlMatrixMode(RL_MODELVIEW);         // Switch back to MODELVIEW matrix
     rlLoadIdentity();                   // Reset current matrix (MODELVIEW)
+
+    //rlScalef(0.0f, -1.0f, 0.0f);      // Flip Y-drawing (?)
 }
 
 // Ends drawing to render texture
@@ -639,7 +651,21 @@ void EndTextureMode(void)
 {
     rlglDraw();                         // Draw Buffers (Only OpenGL 3+ and ES2)
 
-    rlDisableRenderTexture();
+    rlDisableRenderTexture();           // Disable render target
+
+    // Set viewport to default framebuffer size (screen size)
+    // TODO: consider possible viewport offsets
+    rlViewport(0, 0, GetScreenWidth(), GetScreenHeight());
+    
+    rlMatrixMode(RL_PROJECTION);        // Switch to PROJECTION matrix
+    rlLoadIdentity();                   // Reset current matrix (PROJECTION)
+    
+    // Set orthographic projection to current framebuffer size
+    // NOTE: Configured top-left corner as (0, 0)
+    rlOrtho(0, GetScreenWidth(), GetScreenHeight(), 0, 0.0f, 1.0f);
+
+    rlMatrixMode(RL_MODELVIEW);         // Switch back to MODELVIEW matrix
+    rlLoadIdentity();                   // Reset current matrix (MODELVIEW)
 }
 
 // Set target FPS for the game
diff --git a/src/raylib.h b/src/raylib.h
index 9cd02fd8..d0231be2 100644
--- a/src/raylib.h
+++ b/src/raylib.h
@@ -369,6 +369,7 @@ typedef struct BoundingBox {
 // Vertex data definning a mesh
 typedef struct Mesh {
     int vertexCount;            // number of vertices stored in arrays
+    int triangleCount;          // number of triangles stored (indexed or not)
     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)
     float *texcoords2;          // vertex second texture coordinates (useful for lightmaps) (shader-location = 5)
@@ -376,8 +377,7 @@ typedef struct Mesh {
     float *tangents;            // vertex tangents (XYZ - 3 components per vertex) (shader-location = 4)
     unsigned char *colors;      // vertex colors (RGBA - 4 components per vertex) (shader-location = 3)
     unsigned short *indices;    // vertex indices (in case vertex data comes indexed)
-    int triangleCount;          // number of triangles stored (indexed or not)
-    
+
     BoundingBox bounds;         // mesh limits defined by min and max points
     
     unsigned int vaoId;         // OpenGL Vertex Array Object id
@@ -389,30 +389,30 @@ typedef struct Shader {
     unsigned int id;      // Shader program id
     
     // Vertex attributes locations (default locations)
-    int vertexLoc;        // Vertex attribute location point (default-location = 0)
-    int texcoordLoc;      // Texcoord attribute location point (default-location = 1)
-    int normalLoc;        // Normal attribute location point (default-location = 2)
-    int colorLoc;         // Color attibute location point (default-location = 3)
-    int tangentLoc;       // Tangent attribute location point (default-location = 4)
+    int vertexLoc;        // Vertex attribute location point    (default-location = 0)
+    int texcoordLoc;      // Texcoord attribute location point  (default-location = 1)
     int texcoord2Loc;     // Texcoord2 attribute location point (default-location = 5)
+    int normalLoc;        // Normal attribute location point    (default-location = 2)
+    int tangentLoc;       // Tangent attribute location point   (default-location = 4)
+    int colorLoc;         // Color attibute location point      (default-location = 3)
 
     // Uniform locations
     int mvpLoc;           // ModelView-Projection matrix uniform location point (vertex shader)
     int tintColorLoc;     // Diffuse color uniform location point (fragment shader)
     
-    // Texture map locations
-    int mapDiffuseLoc;    // Diffuse map texture uniform location point (fragment shader)
-    int mapNormalLoc;     // Normal map texture uniform location point (fragment shader)
-    int mapSpecularLoc;   // Specular map texture uniform location point (fragment shader)
+    // Texture map locations (generic for any kind of map)
+    int mapTexture0Loc;  // Map texture uniform location point (default-texture-unit = 0)
+    int mapTexture1Loc;  // Map texture uniform location point (default-texture-unit = 1)
+    int mapTexture2Loc;  // Map texture uniform location point (default-texture-unit = 2)
 } Shader;
 
 // Material type
 typedef struct Material {
-    Shader shader;              // Standard shader (supports 3 map types: diffuse, normal, specular)
+    Shader shader;              // Standard shader (supports 3 map textures)
 
-    Texture2D texDiffuse;       // Diffuse texture
-    Texture2D texNormal;        // Normal texture
-    Texture2D texSpecular;      // Specular texture
+    Texture2D texDiffuse;       // Diffuse texture  (binded to shader mapTexture0Loc)
+    Texture2D texNormal;        // Normal texture   (binded to shader mapTexture1Loc)
+    Texture2D texSpecular;      // Specular texture (binded to shader mapTexture2Loc)
     
     Color colDiffuse;           // Diffuse color
     Color colAmbient;           // Ambient color
@@ -439,8 +439,8 @@ typedef struct LightData {
     Vector3 target;     // Used on LIGHT_DIRECTIONAL and LIGHT_SPOT (cone direction target)
     float attenuation;  // Lost of light intensity with distance (world distance)
     
-    Color diffuse;      // Use Vector3 diffuse
-    float intensity;
+    Color diffuse;      // Light color
+    float intensity;    // Light intensity level
     
     float coneAngle;    // Spot light max angle
 } LightData, *Light;
diff --git a/src/rlgl.c b/src/rlgl.c
index 85c0cae2..cc4c4c2f 100644
--- a/src/rlgl.c
+++ b/src/rlgl.c
@@ -404,6 +404,12 @@ void rlOrtho(double left, double right, double bottom, double top, double near,
 
 #endif
 
+// Set the viewport area (trasnformation from normalized device coordinates to window coordinates)
+void rlViewport(int x, int y, int width, int height)
+{
+    glViewport(x, y, width, height);
+}
+
 //----------------------------------------------------------------------------------
 // Module Functions Definition - Vertex level operations
 //----------------------------------------------------------------------------------
@@ -725,17 +731,25 @@ void rlDisableTexture(void)
 #endif
 }
 
+// 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
 }
 
@@ -1792,23 +1806,23 @@ void rlglDrawMesh(Mesh mesh, Material material, Matrix transform)
     // Set shader textures (diffuse, normal, specular)
     glActiveTexture(GL_TEXTURE0);
     glBindTexture(GL_TEXTURE_2D, material.texDiffuse.id);
-    glUniform1i(material.shader.mapDiffuseLoc, 0);        // Texture fits in active texture unit 0
+    glUniform1i(material.shader.mapTexture0Loc, 0);         // Diffuse texture fits in active texture unit 0
     
-    if ((material.texNormal.id != 0) && (material.shader.mapNormalLoc != -1))
+    if ((material.texNormal.id != 0) && (material.shader.mapTexture1Loc != -1))
     {
         glActiveTexture(GL_TEXTURE1);
         glBindTexture(GL_TEXTURE_2D, material.texNormal.id);
-        glUniform1i(material.shader.mapNormalLoc, 1);     // Texture fits in active texture unit 1
+        glUniform1i(material.shader.mapTexture1Loc, 1);     // Normal texture fits in active texture unit 1
         
         // TODO: Upload to shader normalDepth
         //glUniform1f(???, material.normalDepth);
     }
     
-    if ((material.texSpecular.id != 0) && (material.shader.mapSpecularLoc != -1))
+    if ((material.texSpecular.id != 0) && (material.shader.mapTexture2Loc != -1))
     {
         glActiveTexture(GL_TEXTURE2);
         glBindTexture(GL_TEXTURE_2D, material.texSpecular.id);
-        glUniform1i(material.shader.mapSpecularLoc, 2);   // Texture fits in active texture unit 2
+        glUniform1i(material.shader.mapTexture2Loc, 2);    // Specular texture fits in active texture unit 2
     }
 
     if (vaoSupported)
@@ -2569,19 +2583,19 @@ static void LoadDefaultShaderLocations(Shader *shader)
     // Get handles to GLSL input attibute locations
     shader->vertexLoc = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_POSITION_NAME);
     shader->texcoordLoc = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_TEXCOORD_NAME);
+    shader->texcoord2Loc = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_TEXCOORD2_NAME);
     shader->normalLoc = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_NORMAL_NAME);
-    shader->colorLoc = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_COLOR_NAME);
     shader->tangentLoc = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_TANGENT_NAME);
-    shader->texcoord2Loc = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_TEXCOORD2_NAME);
+    shader->colorLoc = glGetAttribLocation(shader->id, DEFAULT_ATTRIB_COLOR_NAME);
 
     // Get handles to GLSL uniform locations (vertex shader)
     shader->mvpLoc  = glGetUniformLocation(shader->id, "mvpMatrix");
 
     // Get handles to GLSL uniform locations (fragment shader)
     shader->tintColorLoc = glGetUniformLocation(shader->id, "colDiffuse");
-    shader->mapDiffuseLoc = glGetUniformLocation(shader->id, "texture0");
-    shader->mapNormalLoc = glGetUniformLocation(shader->id, "texture1");
-    shader->mapSpecularLoc = glGetUniformLocation(shader->id, "texture2");
+    shader->mapTexture0Loc = glGetUniformLocation(shader->id, "texture0");
+    shader->mapTexture1Loc = glGetUniformLocation(shader->id, "texture1");
+    shader->mapTexture2Loc = glGetUniformLocation(shader->id, "texture2");
 }
 
 // Unload default shader 
@@ -2864,8 +2878,10 @@ static void DrawDefaultBuffers(void)
         Matrix matMVP = MatrixMultiply(modelview, projection);
 
         glUniformMatrix4fv(currentShader.mvpLoc, 1, false, MatrixToFloat(matMVP));
-        glUniform1i(currentShader.mapDiffuseLoc, 0);
         glUniform4f(currentShader.tintColorLoc, 1.0f, 1.0f, 1.0f, 1.0f);
+        glUniform1i(currentShader.mapTexture0Loc, 0);
+        
+        // NOTE: Additional map textures not considered for default buffers drawing
     }
    
     // Draw lines buffers
diff --git a/src/rlgl.h b/src/rlgl.h
index 0765a8a7..a3ba6cd5 100644
--- a/src/rlgl.h
+++ b/src/rlgl.h
@@ -171,10 +171,10 @@ typedef enum { OPENGL_11 = 1, OPENGL_33, OPENGL_ES_20 } GlVersion;
         int mvpLoc;           // ModelView-Projection matrix uniform location point (vertex shader)
         int tintColorLoc;     // Color uniform location point (fragment shader)
         
-        // Texture map locations
-        int mapDiffuseLoc;    // Diffuse map texture uniform location point (fragment shader)
-        int mapNormalLoc;     // Normal map texture uniform location point (fragment shader)
-        int mapSpecularLoc;   // Specular map texture uniform location point (fragment shader)
+        // Texture map locations (generic for any kind of map)
+        int mapTexture0Loc;  // Map texture uniform location point (default-texture-unit = 0)
+        int mapTexture1Loc;  // Map texture uniform location point (default-texture-unit = 1)
+        int mapTexture2Loc;  // Map texture uniform location point (default-texture-unit = 2)
     } Shader;
 
     // Texture2D type
@@ -247,6 +247,7 @@ void rlScalef(float x, float y, float z);       // Multiply the current matrix b
 void rlMultMatrixf(float *mat);                 // Multiply the current matrix by another matrix
 void rlFrustum(double left, double right, double bottom, double top, double near, double far);
 void rlOrtho(double left, double right, double bottom, double top, double near, double far);
+void rlViewport(int x, int y, int width, int height); // Set the viewport area
 
 //------------------------------------------------------------------------------------
 // Functions Declaration - Vertex level operations
diff --git a/src/textures.c b/src/textures.c
index 79047ab7..439311f6 100644
--- a/src/textures.c
+++ b/src/textures.c
@@ -1385,10 +1385,6 @@ void DrawTextureEx(Texture2D texture, Vector2 position, float rotation, float sc
 void DrawTextureRec(Texture2D texture, Rectangle sourceRec, Vector2 position, Color tint)
 {
     Rectangle destRec = { (int)position.x, (int)position.y, abs(sourceRec.width), abs(sourceRec.height) };
-    
-    if (sourceRec.width < 0) sourceRec.x -= sourceRec.width;
-    if (sourceRec.height < 0) sourceRec.y -= sourceRec.height;
-    
     Vector2 origin = { 0, 0 };
 
     DrawTexturePro(texture, sourceRec, destRec, origin, 0.0f, tint);
@@ -1398,6 +1394,9 @@ void DrawTextureRec(Texture2D texture, Rectangle sourceRec, Vector2 position, Co
 // NOTE: origin is relative to destination rectangle size
 void DrawTexturePro(Texture2D texture, Rectangle sourceRec, Rectangle destRec, Vector2 origin, float rotation, Color tint)
 {
+    if (sourceRec.width < 0) sourceRec.x -= sourceRec.width;
+    if (sourceRec.height < 0) sourceRec.y -= sourceRec.height;
+    
     rlEnableTexture(texture.id);
 
     rlPushMatrix();
diff --git a/src/windows_compile.bat b/src/windows_compile.bat
deleted file mode 100644
index f1d0fb29..00000000
--- a/src/windows_compile.bat
+++ /dev/null
@@ -1,2 +0,0 @@
-set PATH=C:\raylib\MinGW\bin;%PATH%
-mingw32-make
\ No newline at end of file