   10 bits per color channel
  What does that mean?  I thought colors were always 8 bit per channel?http://www.tomshardware.com/graphic/20030930/radeon_9800-03.htmlThe bits/color channel are at the bottom of that table. 
  Well, it''s just to get better color accuracy. DX9 function./MindWipe ;quote:Original post by MindWipe  DX9 function.YAY! Now DirectX lets you take even more memory for each pixel, for no gain in visible color accuracy.  That''s right, the eye can''t even detect all the color 24bpp provides, but we need more!;  no need to whine: i suppose its optional. yet i agree its bullshit at the same time. have you ever seen a color transition with your 24bit colors? i didnt. ;  I think there's a difference to the eye though!  For gradients from one color to another, I can sometimes destinguish two neighbouring colors with 8 bpc, and hopefully 10 will fix that And why is it that modern digital cameras and scanner use 12bpc?Do computer monitors support this?  How about a DVI flatscreen?   [edited by - Boops on February 6, 2004 1:35:48 PM];  It usually doesn''t   take more space, especially internally, because 24bpp is usually stored in 32 bits anyway, and 10bpp has 30 bits of color, and 2 bits of alpha, or whatever else.Plus, although I agree that humans can''t directly see minute changes in colors using 24bpp format, better precision still positively affects how nice the scene can look.  Why do you think DX9 forces graphics cards to use 64/96/128 bit floating point colors internally?  It''s largely due to rounding errors, larger dynamic ranges (lighting is a major concern here), and in general, things that artists can more easily identify, while the rest of us are like, "Well, it just doesn''t look quite right, but I don''t know why."  Real-time realistic looking scenes are pretty much not possible with 24bpp color.  Pretty good looking scenes are, but not really   good looking scenes. ;quote:Original post by Puzzler183  YAY! Now DirectX lets you take even more memory for each pixel, for no gain in visible color accuracy.  That''s right, the eye can''t even detect all the color 24bpp provides, but we need more! The more steps it takes to process the image, the more important the accuracy will be. Suppose you have on screen color values 3,5,7,6. Then you apply darkening filter to it, they drop to 0,0,1,1. Then apply a brightening filter and get 10,10,20,20. See, the precision was lost and now you got these crappy two colour values 10 and 20, instead of 9,15,21,18. Carmack has complained a lot about this, apparently Doom 3 does so many effects that these artifacts are very visible.And as said above, it doesn''t take extra memory. ;  Considering that Carmack, amongst others, are pushing 64 bit colors   I don''t think this is that special... ;  Agreed, Carmack has been talking about this for a long time now.  You spoke ignorance, Puzzler183 ;  2 bit alpha, doesn't that mean 4 level of transparency? that would be suck.   [edited by - alnite on February 6, 2004 3:09:02 PM]