Hardware Skinning Support

- Supports GL, D3D9 & D3D11
- Extends vertex formats & shadergen to support blend indices and weights
- Adds basic support for using 4x3 matrices for shader constants
- Supports software fallback

Engine/source/renderInstance/renderPassManager.h

@@ -371,6 +371,17 @@ struct MeshRenderInst : public RenderInst
    GFXTextureObject *accuTex;
    GFXCubemap   *cubemap;
 
+   /// @name Hardware Skinning
+   /// {
+   MatrixF *mNodeTransforms;
+   U32 mNodeTransformCount;
+   /// }
+
+#ifdef TORQUE_ENABLE_GFXDEBUGEVENTS
+   const char *meshName;
+   const char *objectName;
+#endif
+
    void clear();
 };