Quote:
Originally Posted by fivefeet8
I've heard of that as well. Someone at beyond3d did mention something about it's AA problems being something else as well. Shader AA resolve seems to perform less than dedicated ROP AA resolve on Nvidia's G8x cards though.
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Yes which is expected. But the thing that makes shader resolve nice is that it can perform custom resolve filters which can be great with high bloom/HDR filters. Where standard multisample resolve filters do not work.
But anyway, I dont think R600's AA performance has anything to do with its resolve being done on shader core rather than the ROPS. Basic 4xAA resolve for instance is basically just a "MADD" in operation so it shouldnt be that much slower than hardware resolve. When G80 performs shader based resolve ((Mandated by DX 10 to be available)) it doesnt lose 50% of its performance.
Chris