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Image Quality, Optimizations, etc.
I've been noticing lately that in games there's alot of moire on
textures, specificly around the areas that mipmaps would be for bilinear filtering, when using trilinear filtering + anisotropic filtering with GeForce 6600 cards (and also GeForce 6800). Even when I set the image quality to "high quality" and disable all optimizations. I did a search and apparrently alot of other folks on forums are having issues too, but curiously enough, none of the major review sites seem to be paying any attention to this IQ (image quality) issue. Some ordinary forumers are speculating perhaps there is junk left over from the GeForce FX days. In the last year or two, both ATI and NVidia have become increasingly aggressive with the use of optimizations in an attempt to one-up their competitor. I can't help but wonder how much of the "performance" of these newer cards is simply due to cheating and shortcuts. Others think maybe Nvidia is not using true anisotropic filtering at all anymore, but some other method, to perhaps gain speed- however, obviously there are IQ issues they are ignoring. Now, some folks and ATI/NVidia claim these optimizations have little or no IQ affects. Well, you'ld have to be blind to not spot the moire in many games when using anisotropic filtering. You can clearly see it on repetitive patterns such as grating, floor tiles, roads, and those sort of textures that have alot of repetitive, fine detail. Look at levels in UT 2004 like asbestos or Oceanic, you can clearly seet it on the floors. I can also spot it in Grand Theft Auto: San Andreas and several other games (I don't have may games installed on my PC currently, so it's a small sample). |
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