Hardware Occlusion Queries

GPU provides query mode to test pixel whether or not would be draw. In the previous frame, render model only its bounding box, and query if success in the view indeed. Furthermore, we just render objects the bounding box is in the clip space .
But sometimes this method will have more drawcalls, and need to wait some frames. It will have overcome.



Fast and Simple Occlusion Culling using Hardware-Based.pdf

Occlusion Culling Using DirectX 9


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