Originally posted by higuita
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DRI2 vs. DRI3 Radeon Linux OpenGL Performance
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Trying to enable DRI3 i get this:
[ 25369.650] (WW) RADEON(0): Option "DRI3" is not used
man radeon do not show any DRI3 option... i'm using xf86-video-ati-7.5.0, mesa-11.0.4 (with --enable-dri3), libdrm-2.4.65 and xorg-server-1.17.3
also, kernel 4.2.5 on a slackware64
Any tip why it is failing and how to fix this
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Originally posted by mannerov View PostThus the difference will only appear when we render faster than the screen can show, meaning no user side improvement.
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Originally posted by Adriannho View PostThen it means arch specifically turns it off by default. Trust me, I tried enabling it but it doesn't work.
Mesa build from lcarlier on the other hand, works as it should.
It's not turned off in mesa PKGBUILD, and it was working last time I've tried. Will try again later.
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Originally posted by AnAkIn View Post
The option is turned on by default for Linux builds, it doesn't need to be specified.
Mesa build from lcarlier on the other hand, works as it should.
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Originally posted by kaprikawn View PostI think it's a build-time option, so whomever builds mesa has the option either way. And I'm pretty sure the build in the default pacman repo doesn't have it enabled, correct me if I'm wrong.
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Originally posted by AnAkIn View Post
DRI3 is already enabled by default in mesa.
http://cgit.freedesktop.org/mesa/mes...figure.ac#n762
Since 2014:
http://cgit.freedesktop.org/mesa/mes...39ab3db31fffd9
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Great article, I think DRI3 needs publicising more and I think this'll help with that.
I noticed a particular forum post that mentioned this in the last Radeon tests (which I think what Michael was referring to) and I actually enabled it on my Arch gaming machine yesterday from that, though I haven't tested it yet. It was surprisingly difficult to find the instructions on how to enable it. It's one of the few times that the Arch wiki has let me down and I had to reference a few different sources to find the correct instructions, but hey, that's Arch for you.
I echo the sentiment that I wish Arch would enable it by default, or at the very least add a section to the Xorg wiki page that gives instructions. I'll maybe dip my toe in the water of contributing to the wiki by suggesting it.
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Originally posted by Adriannho View PostThis bothers me as well. Maybe some arch dev is around and sees this article,
Or someone can link this in their forums.
Anyways, thanks for the article Michael!
http://cgit.freedesktop.org/mesa/mes...figure.ac#n762
Since 2014:
Last edited by AnAkIn; 01 November 2015, 06:30 PM.
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