@cmuratori Interesting question, paging @Simon_Fe1 :)
@Simon_Fe1 @webmarco @nothings Basically it becomes like "early Z" at that point, and saves the subsequent fetch.
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@Simon_Fe1@webmarco@nothings I think I had been thinking about GPU texel fetching wrong, I was thinking it was like the lanes. -
@Simon_Fe1@webmarco@nothings So I was assuming that the channels were independent, but obviously that's incorrect. - Show replies
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@cmuratori@webmarco@nothings (1/2) Going back to your "if A==0 don't read RGB" IMO that would only be a win if 99% of texture had A==0. -
@cmuratori@webmarco@nothings (2/2) as memory latency is deeply unpleasant to hide. - Show replies
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