[MODELS] Disable GPU skinning for MacOS platform (#4348)

* Update raylib_api.* by CI

* Disable GPU skinning on MacOS
Add GPU skinning example to MSVC Projects.

* Update raylib_api.* by CI

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

examples/models/models_gpu_skinning.c

@@ -10,6 +10,8 @@
 *   BSD-like license that allows static linking with closed source software
 *
 *   Copyright (c) 2024 Daniel Holden (@orangeduck)
+* 
+*   Note: Due to limitations in the Apple OpenGL driver, this feature does not work on MacOS
 *
 ********************************************************************************************/
 

parser/output/raylib_api.json

@@ -11104,7 +11104,7 @@
     },
     {
       "name": "UpdateModelAnimationBoneMatrices",
-      "description": "Update model animation mesh bone matrices",
+      "description": "Update model animation mesh bone matrices (Note GPU skinning does not work on Mac)",
       "returnType": "void",
       "params": [
         {

parser/output/raylib_api.lua

@@ -7621,7 +7621,7 @@ return {
     },
     {
       name = "UpdateModelAnimationBoneMatrices",
-      description = "Update model animation mesh bone matrices",
+      description = "Update model animation mesh bone matrices (Note GPU skinning does not work on Mac)",
       returnType = "void",
       params = {
         {type = "Model", name = "model"},

parser/output/raylib_api.txt

@@ -4230,7 +4230,7 @@ Function 503: IsModelAnimationValid() (2 input parameters)
 Function 504: UpdateModelAnimationBoneMatrices() (3 input parameters)
   Name: UpdateModelAnimationBoneMatrices
   Return type: void
-  Description: Update model animation mesh bone matrices
+  Description: Update model animation mesh bone matrices (Note GPU skinning does not work on Mac)
   Param[1]: model (type: Model)
   Param[2]: anim (type: ModelAnimation)
   Param[3]: frame (type: int)

parser/output/raylib_api.xml

@@ -2830,7 +2830,7 @@
             <Param type="Model" name="model" desc="" />
             <Param type="ModelAnimation" name="anim" desc="" />
         </Function>
-        <Function name="UpdateModelAnimationBoneMatrices" retType="void" paramCount="3" desc="Update model animation mesh bone matrices">
+        <Function name="UpdateModelAnimationBoneMatrices" retType="void" paramCount="3" desc="Update model animation mesh bone matrices (Note GPU skinning does not work on Mac)">
             <Param type="Model" name="model" desc="" />
             <Param type="ModelAnimation" name="anim" desc="" />
             <Param type="int" name="frame" desc="" />

projects/VS2022/examples/models_gpu_skinning.vcxproj

@@ -0,0 +1,387 @@
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projects/VS2022/raylib.sln

@@ -299,6 +299,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "shapes_splines_drawing", "e
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "shapes_top_down_lights", "examples\shapes_top_down_lights.vcxproj", "{703BE7BA-5B99-4F70-806D-3A259F6A991E}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "models_gpu_skinning", "examples\models_gpu_skinning.vcxproj", "{8245DAD9-D402-4D5C-8F45-32229CD3B263}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug.DLL|x64 = Debug.DLL|x64
@@ -2531,6 +2533,22 @@ Global
 		{703BE7BA-5B99-4F70-806D-3A259F6A991E}.Release|x64.Build.0 = Release|x64
 		{703BE7BA-5B99-4F70-806D-3A259F6A991E}.Release|x86.ActiveCfg = Release|Win32
 		{703BE7BA-5B99-4F70-806D-3A259F6A991E}.Release|x86.Build.0 = Release|Win32
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Debug.DLL|x64.ActiveCfg = Debug.DLL|x64
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Debug.DLL|x64.Build.0 = Debug.DLL|x64
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Debug.DLL|x86.ActiveCfg = Debug.DLL|Win32
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Debug.DLL|x86.Build.0 = Debug.DLL|Win32
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Debug|x64.ActiveCfg = Debug|x64
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Debug|x64.Build.0 = Debug|x64
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Debug|x86.ActiveCfg = Debug|Win32
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Debug|x86.Build.0 = Debug|Win32
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Release.DLL|x64.ActiveCfg = Release.DLL|x64
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Release.DLL|x64.Build.0 = Release.DLL|x64
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Release.DLL|x86.ActiveCfg = Release.DLL|Win32
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Release.DLL|x86.Build.0 = Release.DLL|Win32
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Release|x64.ActiveCfg = Release|x64
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Release|x64.Build.0 = Release|x64
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Release|x86.ActiveCfg = Release|Win32
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263}.Release|x86.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -2682,6 +2700,7 @@ Global
 		{D8026C60-CCBC-45DF-9085-BF21569EB414} = {DA049009-21FF-4AC0-84E4-830DD1BCD0CE}
 		{DF25E545-00FF-4E64-844C-7DF98991F901} = {278D8859-20B1-428F-8448-064F46E1F021}
 		{703BE7BA-5B99-4F70-806D-3A259F6A991E} = {278D8859-20B1-428F-8448-064F46E1F021}
+		{8245DAD9-D402-4D5C-8F45-32229CD3B263} = {AF5BEC5C-1F2B-4DA8-B12D-D09FE569237C}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {E926C768-6307-4423-A1EC-57E95B1FAB29}

src/config.h

@@ -119,9 +119,18 @@
 #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR       3
 #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT     4
 #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2   5
-#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS     6
-#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS 7
-#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES     8
+#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES     6
+
+// The mac OpenGL drivers do not support more than 8 VBOs, so we can't support GPU animations
+#ifndef __APPLE__
+#define RL_SUPPORT_MESH_ANIMATION_VBO
+#endif
+
+#ifdef RL_SUPPORT_MESH_ANIMATION_VBO
+#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS     7
+#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS 8
+#endif
+
 
 // Default shader vertex attribute names to set location points
 // NOTE: When a new shader is loaded, the following locations are tried to be set for convenience

src/raylib.h

@@ -1597,7 +1597,7 @@ RLAPI void UpdateModelAnimation(Model model, ModelAnimation anim, int frame);
 RLAPI void UnloadModelAnimation(ModelAnimation anim);                                       // Unload animation data
 RLAPI void UnloadModelAnimations(ModelAnimation *animations, int animCount);                // Unload animation array data
 RLAPI bool IsModelAnimationValid(Model model, ModelAnimation anim);                         // Check model animation skeleton match
-RLAPI void UpdateModelAnimationBoneMatrices(Model model, ModelAnimation anim, int frame);   // Update model animation mesh bone matrices
+RLAPI void UpdateModelAnimationBoneMatrices(Model model, ModelAnimation anim, int frame);   // Update model animation mesh bone matrices (Note GPU skinning does not work on Mac)
 
 // Collision detection functions
 RLAPI bool CheckCollisionSpheres(Vector3 center1, float radius1, Vector3 center2, float radius2);   // Check collision between two spheres

src/rlgl.h

@@ -344,16 +344,17 @@
 #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2
     #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2   5
 #endif
+#ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES
+#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES         6
+#endif
 #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS
-    #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS     6
+    #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS     7
 #endif
 #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS
-    #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS 7
-#endif
-#ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES
-    #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES     8
+    #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS 8
 #endif
 
+
 //----------------------------------------------------------------------------------
 // Types and Structures Definition
 //----------------------------------------------------------------------------------
@@ -4170,8 +4171,11 @@ unsigned int rlLoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId)
     glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR, RL_DEFAULT_SHADER_ATTRIB_NAME_COLOR);
     glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT, RL_DEFAULT_SHADER_ATTRIB_NAME_TANGENT);
     glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2, RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2);
+
+#ifdef RL_SUPPORT_MESH_ANIMATION_VBO
     glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS, RL_DEFAULT_SHADER_ATTRIB_NAME_BONEIDS);
     glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS, RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS);
+#endif
 
     // NOTE: If some attrib name is no found on the shader, it locations becomes -1
 

src/rmodels.c

@@ -1252,9 +1252,10 @@ void UploadMesh(Mesh *mesh, bool dynamic)
     mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR] = 0;        // Vertex buffer: colors
     mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT] = 0;      // Vertex buffer: tangents
     mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2] = 0;    // Vertex buffer: texcoords2
+    mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES] = 0;      // Vertex buffer: indices
     mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS] = 0;      // Vertex buffer: boneIds
     mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS] = 0;  // Vertex buffer: boneWeights
-    mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES] = 0;      // Vertex buffer: indices
+
 
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     mesh->vaoId = rlLoadVertexArray();
@@ -1340,7 +1341,8 @@ void UploadMesh(Mesh *mesh, bool dynamic)
         rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2, value, SHADER_ATTRIB_VEC2, 2);
         rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2);
     }
-    
+
+#ifdef RL_SUPPORT_MESH_ANIMATION_VBO
     if (mesh->boneIds != NULL)
     {
         // Enable vertex attribute: boneIds (shader-location = 6)
@@ -1372,6 +1374,7 @@ void UploadMesh(Mesh *mesh, bool dynamic)
         rlSetVertexAttributeDefault(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS, value, SHADER_ATTRIB_VEC4, 2);
         rlDisableVertexAttribute(RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS);
     }
+#endif
 
     if (mesh->indices != NULL)
     {
@@ -1485,13 +1488,14 @@ void DrawMesh(Mesh mesh, Material material, Matrix transform)
 
     // Upload model normal matrix (if locations available)
     if (material.shader.locs[SHADER_LOC_MATRIX_NORMAL] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_NORMAL], MatrixTranspose(MatrixInvert(matModel)));
-    
+
+#ifdef RL_SUPPORT_MESH_ANIMATION_VBO
     // Upload Bone Transforms    
     if (material.shader.locs[SHADER_LOC_BONE_MATRICES] != -1 && mesh.boneMatrices)
     {
         rlSetUniformMatrices(material.shader.locs[SHADER_LOC_BONE_MATRICES], mesh.boneMatrices, mesh.boneCount);
     }
-
+#endif
     //-----------------------------------------------------
 
     // Bind active texture maps (if available)
@@ -1570,7 +1574,8 @@ void DrawMesh(Mesh mesh, Material material, Matrix transform)
             rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02], 2, RL_FLOAT, 0, 0, 0);
             rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_TEXCOORD02]);
         }
-        
+
+#ifdef RL_SUPPORT_MESH_ANIMATION_VBO
         // Bind mesh VBO data: vertex bone ids (shader-location = 6, if available)
         if (material.shader.locs[SHADER_LOC_VERTEX_BONEIDS] != -1)
         {
@@ -1586,6 +1591,7 @@ void DrawMesh(Mesh mesh, Material material, Matrix transform)
             rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS], 4, RL_FLOAT, 0, 0, 0);
             rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS]);
         }
+#endif
 
         if (mesh.indices != NULL) rlEnableVertexBufferElement(mesh.vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES]);
     }
@@ -1729,11 +1735,13 @@ void DrawMeshInstanced(Mesh mesh, Material material, const Matrix *transforms, i
     // Upload model normal matrix (if locations available)
     if (material.shader.locs[SHADER_LOC_MATRIX_NORMAL] != -1) rlSetUniformMatrix(material.shader.locs[SHADER_LOC_MATRIX_NORMAL], MatrixTranspose(MatrixInvert(matModel)));
     
+#ifdef RL_SUPPORT_MESH_ANIMATION_VBO
     // Upload Bone Transforms    
     if (material.shader.locs[SHADER_LOC_BONE_MATRICES] != -1 && mesh.boneMatrices)
     {
         rlSetUniformMatrices(material.shader.locs[SHADER_LOC_BONE_MATRICES], mesh.boneMatrices, mesh.boneCount);
     }
+#endif
     
     //-----------------------------------------------------