the lights object array
可选recover: any[]the queue for recovery
light object
revert array
可选rt: RenderTextureRender target (mulitply mode)
可选rtAdd: RenderTexture可选rtSub: RenderTexture设置材质参数
render target
可选rtAdd: RenderTexture可选rtSub: RenderTexturemesh object
array index
array index
the lights object
mesh object
array index
每一层用于渲染光影图的资源