We separate the background and foreground shading passes to be able to make the object id pass optionnal if we don't need it. This saves a bit more memory. Also not clearing all rendertargets saves some GPU time too.
We separate the background and foreground shading passes to be able to make the object id pass optionnal if we don't need it. This saves a bit more memory. Also not clearing all rendertargets saves some GPU time too.