Mesa has another patch that will be interesting for Linux gamers. This is actually a two-part fix as it was re-worked. The Witcher 2 [Steam, GOG] should have a lot less black flickering with this latest patch.
The first patch was here, but now Marek has re-worked a v2 of the patch here.
Checking on the bug entry for it, it seems it improves the situation greatly but is not a full fix, as Marek described:
QuoteThe remaining bug can be an instruction scheduling issue: v_interp is moved outside of the WQM or moved after the KILL opcode (which can break the WQM) or moved into a branch (same issue).
As always, great to see Mesa work progress and Marek is doing some really fantastic work for AMD GPU owners. Article taken from GamingOnLinux.com.
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The comments on this article are closed.
cRaZy-bisCuiT Jan 9, 2017
Thank you very much Marek! That's exactly what we need: Bugfixing to get Games running and performance patches! As another guy said, bloating up the drivers is not the way to go. But as long as those patches are rare and slim and maybe even generic to the case of problems, I don't see any reason not to include them. :)
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soulsource Jan 9, 2017
Is this a fix for a driver issue, or a workaround for broken game-code?
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buenaventura Jan 9, 2017
Performance for me in witcher 2 is just horrendous even on absolute bottom settings. I wonder if this patch will help? Is it already in padoka ppa?
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Quoting: buenaventuraPerformance for me in witcher 2 is just horrendous even on absolute bottom settings. I wonder if this patch will help? Is it already in padoka ppa?
Have you enabled beta build for Linux in the properties tag? That gave me a bit more performance.
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Quoting: soulsourceIs this a fix for a driver issue, or a workaround for broken game-code?
Looks like a pretty generic fix to me (ie, not game-specific). I am not qualified enough to really understand the problem, though :)
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Quoting: GuestQuoting: soulsourceIs this a fix for a driver issue, or a workaround for broken game-code?
It looks like a generic fix, though perhaps not on a common code path. With Mesa being feature complete, I suspect we'll start seeing more of this type of thing in future.
Good work Marek!
Yup, now that mesa is 90% here, only the other 90% are missing :D
Marek deserves some cookies, that's true.
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Quoting: buenaventuraPerformance for me in witcher 2 is just horrendous even on absolute bottom settings.
It's very good for me on max settings (RX 480 / Mesa 13.0.2). What hardware and Mesa version do you use? Also, remember to always keep ubersampling disabled.
Last edited by Shmerl on 9 January 2017 at 7:18 pm UTC
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buenaventura Jan 10, 2017
Quoting: chimpyHave you enabled beta build for Linux in the properties tag? That gave me a bit more performance.
I bought it on GOG, so I'm not sure how I would get that beta linux build :O
Quoting: ShmerlIt's very good for me on max settings (RX 480 / Mesa 13.0.2). What hardware and Mesa version do you use? Also, remember to always keep ubersampling disabled.
Granted, my hardware is not particularly good (laptop with quad core 2.4ghz, 8gb RAM), this is my GPU:
00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Mullins [Radeon R4/R5 Graphics] [1002:9851] (rev 05) (prog-if 00 [VGA controller])
It's GCN 1.1 I hear, but clearly not very good (1GB VRAM it says on the sticker). However some games work quite fine - I play Mirror's Edge with Wine (gallium staging) quite OK for example. I use the drivers from padoka ppa, glxinfo says "OpenGL core profile version string: 4.5 (Core Profile) Mesa 13.1.0-devel - padoka PPA".
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Quoting: buenaventuraGranted, my hardware is not particularly good (laptop with quad core 2.4ghz, 8gb RAM), this is my GPU:
00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Mullins [Radeon R4/R5 Graphics] [1002:9851] (rev 05) (prog-if 00 [VGA controller])
It's GCN 1.1 I hear, but clearly not very good (1GB VRAM it says on the sticker).
Witcher 2 is pretty demanding. So no surprise it doesn't perform well on your GPU. You surely need to upgrade.
Last edited by Shmerl on 10 January 2017 at 8:43 am UTC
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