Reorganize functions

src/rlgl.h

@@ -391,6 +391,7 @@ void rlDeleteBuffers(unsigned int id);          // Unload vertex data (VBO) from
 void rlClearColor(byte r, byte g, byte b, byte a);      // Clear color buffer with color
 void rlClearScreenBuffers(void);                        // Clear used screen buffers (color and depth)
 int rlGetVersion(void);                                 // Returns current OpenGL version
+Vector3 rlUnproject(Vector3 source, Matrix proj, Matrix view);  // Get world coordinates from screen coordinates
 
 //------------------------------------------------------------------------------------
 // Functions Declaration - rlgl functionality
@@ -415,12 +416,11 @@ void rlUpdateMesh(Mesh mesh, int buffer, int numVertex);          // Update vert
 void rlDrawMesh(Mesh mesh, Material material, Matrix transform);    // Draw a 3d mesh with material and transform
 void rlUnloadMesh(Mesh *mesh);                                      // Unload mesh data from CPU and GPU
 
-Vector3 rlUnproject(Vector3 source, Matrix proj, Matrix view);    // Get world coordinates from screen coordinates
+// Texture maps generation (PBR)
-
+Texture2D rlGenMapCubemap(Texture2D skyHDR, int size);              // Generate cubemap texture map`from HDR texture
-Texture2D rlGenMapCubemap(Texture2D skyHDR, int size);
+Texture2D rlGenMapIrradiance(Texture2D cubemap, int size);          // Generate irradiance texture map
-Texture2D rlGenMapIrradiance(Texture2D cubemap, int size);
+Texture2D rlGenMapPrefilter(Texture2D cubemap, int size);           // Generate prefilter texture map
-Texture2D rlGenMapPrefilter(Texture2D cubemap, int size);
+Texture2D rlGenMapBRDF(Texture2D cubemap, int size);                // Generate BRDF texture map
-Texture2D rlGenMapBRDF(Texture2D cubemap, int size);
 
 // NOTE: There is a set of shader related functions that are available to end user,
 // to avoid creating function wrappers through core module, they have been directly declared in raylib.h