Complements the #4348 GPU skinning fix (#4352)

src/rlgl.h

@@ -345,14 +345,17 @@
     #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2   5
 #endif
 #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES
-#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES         6
+    #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_INDICES     6
 #endif
+
+#ifdef RL_SUPPORT_MESH_ANIMATION_VBO
 #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS
     #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS     7
 #endif
 #ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS
     #define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS 8
 #endif
+#endif
 
 
 //----------------------------------------------------------------------------------

src/rmodels.c

@@ -1253,8 +1253,11 @@ void UploadMesh(Mesh *mesh, bool dynamic)
     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
+
+#ifdef RL_SUPPORT_MESH_ANIMATION_VBO
     mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS] = 0;      // Vertex buffer: boneIds
     mesh->vboId[RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS] = 0;  // Vertex buffer: boneWeights
+#endif
 
 
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
@@ -1819,7 +1822,8 @@ void DrawMeshInstanced(Mesh mesh, Material material, const Matrix *transforms, i
             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)
         {
@@ -1835,6 +1839,7 @@ void DrawMeshInstanced(Mesh mesh, Material material, const Matrix *transforms, i
             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]);
     }