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A bit problematic for me is that mesa 9.1 git now has got a hyperz regression, games like Killing Floor or Team Fortress 2 do only run with "R600_HYPERZ=0 %command%". The older mesa 9.1.0 did not have got this problem (but was not uvd patched).
9.1 has always had hyperz support, but it requires kernel 3.8 so it doesn't get enabled unless you are using kernel 3.8 or newer.
I just packaged mesa 9.1 git+uvd from http://cgit.freedesktop.org/~deathsimple/mesa/log/ and patched vdpau-video wrapper (for use with vlc) - basically only a few symlinks. I already packaged linux-firmware with uvd and kernel 3.9 rc7 + uvd patches. When mesa is uploaded i could even create iso images that can be used to test xvba (vlc) or vdpau (mplayer+vlc) with mesa+fglrx(gfxdetect mode) if somebody is interested.
I would appreciate this. This would give me a chance to easily try it out on my mediapc and make sure HD video playback works smoothly on my AMD hardware.
I am now using Mythbuntu 16.04 on my AMD 780G board (RS780 chipset with HD3200 graphics and UVD2 support). It looks like out of the box a lot of the new Gallium VDPAU goodness is working, but I would like to get it using the UVD chip to hardware-offload the video decoding (it's a HTPC).
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but we are well past most of the mentioned changes making their way into the standard distribution packages. As of 16.04, is there anything that I need to do aside from putting the firmware files in /lib/firmware to make this work?
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