Originally posted by mmstick
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Radeon Gallium3D Performance Gets Close To Catalyst On Ubuntu 14.04
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On my Kaveri platform with Catalyst 14.1 Linux performance is mostly the same as on Windows (sometimes perf on Ubuntu is ~5% lower than on Windows, but most of time a difference is smaller). Remember that you should compare games/benchmarks supported OpenGL renderer on both Windows and Linux, you shouldn't compare apps which uses OpenGL on Linux and DirectX on Windows.
Anyway open source drivers performance looks really impressive for HD5k-6k.
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Originally posted by nadro View PostOn my Kaveri platform with Catalyst 14.1 Linux performance is mostly the same as on Windows (sometimes perf on Ubuntu is ~5% lower than on Windows, but most of time a difference is smaller). Remember that you should compare games/benchmarks supported OpenGL renderer on both Windows and Linux, you shouldn't compare apps which uses OpenGL on Linux and DirectX on Windows.
Anyway open source drivers performance looks really impressive for HD5k-6k.
I have no idea how people are able to do a real comparision since stuff is completely broken (Portal 2, Sir youre being hunted) or there are other severe bugs like heavy framedrops (Source games and many others).
I ordered a kaveri but i really miss my Trinity with its OpenSource drivers.
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Originally posted by AnonymousCoward View PostMid to high end nvidia cards have always run at or near Windows performance for me when comparing like for like (OGL to OGL). YMMV, I may have just been lucky in having the right cards/distribution/etc
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Originally posted by xeekei View PostHow the hell did AMD/ATI manage to screw up the performance of the Catalyst driver on Linux compared to Windows? From what I've heard, they're supposed to be the same codebase. NVidia doesn't have this problem so it's obviously not inherit to the Linux platform. 80% of the WIndows driver is pretty significant.
But AMDs opengl stack is only about 80% of their direct3d performance.
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Originally posted by ObiWan View PostBut AMDs opengl stack is only about 80% of their direct3d performance.
You can try to check independent OpenGL tech demos or write code myself and next compare results on Windows and Linux. In those tests you will see that performance on Windows is mostly the same as on Linux.
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Originally posted by verde View PostPerformance is close (if we accept that ~20% is not HUGE diefferrence).. What about quality??
I would prefer 50% of Catalyst performance with equal (in-game) quality, than 100% Catalyst performance with artifacts in most of the (Steam) games.
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Originally posted by Calinou View PostRendering issues are becoming rarer and rarer. Most games can be run -- OpenGL 3.3 with some 4.x features. Anti-aliasing (MSAA) and anisotropic filtering are supported -- use them.
Catalyst 14.1 isn't even able to play videos without crashing X. Setting render method to opengl helps but this doesn't rise the quality.
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Originally posted by Kemosabe View PostSure. If it starts at all.
Catalyst 14.1 isn't even able to play videos without crashing X. Setting render method to opengl helps but this doesn't rise the quality.
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