WARNING: BREAKING: REDESIGNED: rlgl module

- Many functions renamed to follow rl*() convention
- Some internal functions exposed in the API
- Some functionality moved to other modules
- Reorganized all functions by categories
- Make sure it keeps working with OpenGL 1.1 and 2.1

src/core.c

@@ -2034,7 +2034,37 @@ Shader LoadShader(const char *vsFileName, const char *fsFileName)
     if (fShaderStr != NULL) RL_FREE(fShaderStr);
     
     // After shader loading, we TRY to set default location names
-    if (shader.id > 0) SetShaderDefaultLocations(&shader);
+    if (shader.id > 0)
+    {
+        // 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
+        
+        // NOTE: If any location is not found, loc point becomes -1
+
+        // Get handles to GLSL input attibute locations
+        shader.locs[SHADER_LOC_VERTEX_POSITION] = rlGetLocationAttrib(shader.id, DEFAULT_SHADER_ATTRIB_NAME_POSITION);
+        shader.locs[SHADER_LOC_VERTEX_TEXCOORD01] = rlGetLocationAttrib(shader.id, DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD);
+        shader.locs[SHADER_LOC_VERTEX_TEXCOORD02] = rlGetLocationAttrib(shader.id, DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2);
+        shader.locs[SHADER_LOC_VERTEX_NORMAL] = rlGetLocationAttrib(shader.id, DEFAULT_SHADER_ATTRIB_NAME_NORMAL);
+        shader.locs[SHADER_LOC_VERTEX_TANGENT] = rlGetLocationAttrib(shader.id, DEFAULT_SHADER_ATTRIB_NAME_TANGENT);
+        shader.locs[SHADER_LOC_VERTEX_COLOR] = rlGetLocationAttrib(shader.id, DEFAULT_SHADER_ATTRIB_NAME_COLOR);
+
+        // Get handles to GLSL uniform locations (vertex shader)
+        shader.locs[SHADER_LOC_MATRIX_MVP]  = rlGetLocationUniform(shader.id, "mvp");
+        shader.locs[SHADER_LOC_MATRIX_PROJECTION]  = rlGetLocationUniform(shader.id, "projection");
+        shader.locs[SHADER_LOC_MATRIX_VIEW]  = rlGetLocationUniform(shader.id, "view");
+
+        // Get handles to GLSL uniform locations (fragment shader)
+        shader.locs[SHADER_LOC_COLOR_DIFFUSE] = rlGetLocationUniform(shader.id, "colDiffuse");
+        shader.locs[SHADER_LOC_MAP_DIFFUSE] = rlGetLocationUniform(shader.id, "texture0");
+        shader.locs[SHADER_LOC_MAP_SPECULAR] = rlGetLocationUniform(shader.id, "texture1");
+        shader.locs[SHADER_LOC_MAP_NORMAL] = rlGetLocationUniform(shader.id, "texture2");
+    }
 
     return shader;
 }
@@ -2046,15 +2076,13 @@ void UnloadShader(Shader shader)
     {
         rlUnloadShaderProgram(shader.id);
         RL_FREE(shader.locs);
-
-        TRACELOG(LOG_INFO, "SHADER: [ID %i] Unloaded shader program data from VRAM (GPU)", shader.id);
     }
 }
 
 // Begin custom shader mode
 void BeginShaderMode(Shader shader)
 {
-    rlSetShaderCurrent(shader);
+    rlSetShaderActive(shader);
 }
 
 // End custom shader mode (returns to default shader)
@@ -2066,23 +2094,13 @@ void EndShaderMode(void)
 // Get shader uniform location
 int GetShaderLocation(Shader shader, const char *uniformName)
 {
-    int location = rlGetLocationUniform(shader.id, uniformName);
-
-    if (location == -1) TRACELOG(LOG_WARNING, "SHADER: [ID %i] Failed to find shader uniform: %s", shader.id, uniformName);
-    else TRACELOG(LOG_INFO, "SHADER: [ID %i] Shader uniform (%s) set at location: %i", shader.id, uniformName, location);
-    
-    return location;
+    return rlGetLocationUniform(shader.id, uniformName);
 }
 
 // Get shader attribute location
 int GetShaderLocationAttrib(Shader shader, const char *attribName)
 {
-    int location = rlGetLocationAttrib(shader.id, attribName);
-
-    if (location == -1) TRACELOG(LOG_WARNING, "SHADER: [ID %i] Failed to find shader attribute: %s", shader.id, attribName);
-    else TRACELOG(LOG_INFO, "SHADER: [ID %i] Shader attribute (%s) set at location: %i", shader.id, attribName, location);
-
-    return location;
+    return rlGetLocationAttrib(shader.id, attribName);
 }
 
 // Set shader uniform value

src/raylib.h

@@ -1244,6 +1244,7 @@ RLAPI void UpdateTexture(Texture2D texture, const void *pixels);
 RLAPI void UpdateTextureRec(Texture2D texture, Rectangle rec, const void *pixels);                       // Update GPU texture rectangle with new data
 RLAPI Image GetTextureData(Texture2D texture);                                                           // Get pixel data from GPU texture and return an Image
 RLAPI Image GetScreenData(void);                                                                         // Get pixel data from screen buffer and return an Image (screenshot)
+RLAPI void SetShapesTexture(Texture2D texture, Rectangle source);                                        // Define default texture used to draw shapes
 
 // Texture configuration functions
 RLAPI void GenTextureMipmaps(Texture2D *texture);                                                        // Generate GPU mipmaps for a texture

src/textures.c

@@ -2950,6 +2950,12 @@ Image GetScreenData(void)
     return image;
 }
 
+// Define default texture used to draw shapes
+void SetShapesTexture(Texture2D texture, Rectangle source)
+{
+    rlSetShapesTexture(texture, source);
+}
+
 //------------------------------------------------------------------------------------
 // Texture configuration functions
 //------------------------------------------------------------------------------------