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This was a nice idea that should work according to all the textbooks, but unfortunately it works only on AMD cards. NVidia cards get no benefit in simple test maps using 1000x the same model lit by several lights, and they *lose* fps in the real-map scene we used for testing. Some mysterious perf "optimization" in the nvidia drivers is killing the benefit. So we won't use it, even for AMD. We don't want to reintroduce divergence between rendering paths for different cards, which would make future improvements twice as hard to implement. |
