private void InitRenderingScene()
{
if (!d3DImage.IsFrontBufferAvailable)
return;
factory = new SceneGraphFactory();
wpfRenderer = factory.CreateRenderTargetA8R8G8B8Asset();
/////////////////////////////////////////////////////////////
cameraAsset = factory.CreateCamera();
cameraAsset.Perspective(34.0 , (double)RESOLUTION_X / (double)RESOLUTION_Y, Z_NEAR, 0.0);
targetRenderer = factory.CreateRenderTargetAsset();
clearTargetBuffer = factory.CreateClearBuffer();
targetRenderer.SetRoot(clearTargetBuffer);
clearLayerBuffer = factory.CreateClearBuffer();
wpfRenderer.SetRoot(clearLayerBuffer);
TextureLayerNode targetTextureLayer = factory.CreateTextureLayer(targetRenderer);
targetTextureLayer.MakeParent(clearLayerBuffer);
effectAssetMesh = factory.CreateEffect("Position.DirectX9.obj.fx");
effectAssetMesh.SetValue("Time", 1);
ObjMeshAsset objMeshAsset = factory.CreateObjMesh("bigguy_g.obj");
drawMockNode = factory.CreateDrawMock();
drawMockNode.SetMesh(objMeshAsset);
drawmockTransformNodeFirst = factory.CreateTransform();
drawmockTransformNodeSecond = factory.CreateTransform();
drawmockTransformNodeFirst.MakeParent(clearTargetBuffer);
drawmockTransformNodeSecond.MakeParent(drawmockTransformNodeFirst);
drawMockNode.MakeParent(drawmockTransformNodeSecond);
///////////////////////////////////////////////
cudaRenderer = factory.CreateCudaRaytraceRenderAsset();
TextureLayerNode cudaTextureLayer = factory.CreateTextureLayer(cudaRenderer);
cudaRenderer.SetRoot(drawMockNode);
cudaTextureLayer.MakeParent(clearLayerBuffer);
cudaRenderer.SetTextureTarget(4, factory.CreateTextureAsset(targetRenderer));
////////////////////////////////////
effectAssetLayer = factory.CreateEffect("TextureLayerWpf.DirectX9.fx");
// set the back buffer using the new scene pointer
sceneIntPtr = (IntPtr)wpfRenderer.GetDirect3D9Surface(0);
d3DImage.Lock();
d3DImage.SetBackBuffer(D3DResourceType.IDirect3DSurface9, sceneIntPtr);
d3DImage.Unlock();
// leverage the Rendering event of WPF's composition target to
// update the custom D3D scene
CompositionTarget.Rendering += OnRendering;
}