If Graphics.RenderTarget is not overriden, let it return the actual output rendertarget so you can fetch MSAA textures without copy ( you're going to shoot your own balls using this if you dont know what you're doing ) Tiled Frustums Start moving tiled_light_culling to use frusta Iterate frustum tiled culling Near/far tiled frustum planes Very simple ConeIntersect and AABBIntersect