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Brian Paul authored
As it was, we were calling glReadPixels 65,536 times to probe all the pixels. This actually took quite a while with some drivers. Probing "only" 256 pixels now is much faster, and good enough.
eb39052a
As it was, we were calling glReadPixels 65,536 times to probe all the pixels. This actually took quite a while with some drivers. Probing "only" 256 pixels now is much faster, and good enough.