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0e1f616
(Get the code!)
I finally got Compiz Fusion compiled, installed and running. So it actually did correct the tearing, for both 720p and 1080i (don't have any 1080p video content). I output 1080p via HDMI though. BUT, and this is a big but, I can't really run compiz because I'm running a diskless client (over NFS) with 2GB of RAM and zero swap. So where as before I was running X, openbox, mythfrontend within 500MB of ram now X, Compiz (with just about all plugins disabled), and mythfrontend now takes up all 2GB. So now I have video buffering problems. 1080i seems to run ok, but 720p stutters horribly.
I'm running:
Gentoo but using Intel Kernel (.28 w/ 6 patches)
Xorg-server-
mesa-9999 (as of couple weeks ago)
xf86-video-
Others things to note:
Using DRI2/UXA there was a LOT of refreshing problems. Pretty much the only thing that looked right was fullscreen video. The mythfrontend wasn't drawing anything else correctly. I'll have to double check if 720p content played correctly here, I only tried 1080i.
Using EXA everything looked great, but it was very slow and, like I stated above, very memory intensive. I'm assuming 720p playback issues where from memory buffering problems though.