On Fri, Mar 31, 2006 at 01:51:03PM -0500, [EMAIL PROTECTED] wrote: > I think some of the cards use the GPUs for scaling video (and perhaps > other optimizations). Kind of like the nice upscaling done by some DVD > players.? Nvidia calls it PureVideo: > [1]http://www.nvidia.com/page/purevideo.html > "And the high-precision subpixel processing enables videos to be scaled to > any size, so that even small videos look like they were recorded in > high-resolution." > I'm sure ATI has something similar? I would guess that this kind of thing > could also be used for other things sent to it? > On Mar 31, 2006, at 11:33 AM, Brian Paul wrote: > > John Kheit wrote: > > Sorry Brian, I should have been more specific.? I mean more as a final > output onto a screen.? Using an LCD/CRT's individual RGB subpixels to > antialiasing (or some form of screen output enhancement). It seems a > lot of the 3D stuff in the GPU is already employing sub-pixel > coordinates, so it would be nice if the actual output to the screen > would take advantage of that. > > AFAIK, nobody's hardware does that. > When that kind of antialiasing is done for text, I think it's the job of > the font rendering code to do so.
Is the original author talking about Cleartype-style antialiasing? (ie using the RGB subpixels to get more {usually horizontal} resolution in text rendering). Sounds like something you could do with a pixel shader perhaps. Straight alpha-blending with the RENDER extension is already accelerated on most hardware supported by DRI isn't it? Phil -- http://www.kantaka.co.uk/ .oOo. public key: http://www.kantaka.co.uk/gpg.txt ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel