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/renderPrePassMgr.cpp

@@ -430,6 +430,12 @@ void RenderPrePassMgr::render( SceneRenderState *state )
             matrixSet.setProjection(*passRI->projection);
             mat->setTransforms(matrixSet, state);
 
+            // Setup HW skinning transforms if applicable
+            if (mat->usesHardwareSkinning())
+            {
+               mat->setNodeTransforms(passRI->mNodeTransforms, passRI->mNodeTransformCount);
+            }
+
             // If we're instanced then don't render yet.
             if ( mat->isInstanced() )
             {