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planet.freedesktop.org
This is just a sample of the content found on this website. Please visit the website to read the entire page. "planet.freedesktop.org December 05, 2008 Dave Airlie : cool radeon enhancements... As Alex mentioned http://www.botchco.com/agd5f/?p=33 the radeon community developers have been tearing *pardon the pun* along making radeon do cool things on top of the cool things it already does!! Alex came up with an idea a while back to try and get tear free EXA and Xv rendering. Tear free Xv means we hopefully can get textured video on (r100->r500) without ugly tears in the middle. Pierre Ossman took on the proof-of-concept Alex hacked together and spent some time making it all work properly. While he was there he picked up the r3xx/r4xx bicubic shader two of the other developers (Maciej and Corbin) had started but never had time to finish debugging, and pushed it forward so it works on those chips. Its always good to know there are developers out there scratching itches and that with a small bit of input from Alex or myself can push the project to do what they want. There have been many accusations levelled at the radeon codebase over the years but the number of really useful community contributions has risen a lot lately, so it can't all be bad!! So if you want tearfree Xv video on your r300/r400/r500, radeon is now the only driver that can provide it. No we don't have any r600 support for Xv yet, stay tuned hopefully :) December 05, 2008 09:16 AM Alex Deucher : No more tears take 2 So Pierre Ossman took my previous vline anti-tearing patches and saw them through. We now have mostly tear free rendering in the radeon driver if you want it! For textured video it’s on by default, but you can disable it by toggling the XV_VSYNC Xv attribute. For EXA, you can enable the EXAVSync option in your xorg.conf if you want to play with tear free desktop rendering, however, since it work" .... read entire page
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