Originally posted by Ericg
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AMD R600 Gallium3D Optimizing Back-End Merged
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Originally posted by curaga View PostI thought it wasn't agreed on that LLVM was the best longterm solution (for current cards) either.
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LLVM's latency is another point against it - it takes much longer to compile a shader using llvm than the current compiler. A long pause in the middle of a level isn't nice.
(bad game design not to load all shaders at load time, but many games do so)
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Originally posted by Drago View PostMichael, when you test r600-sb, make sure you include Heaven and Doom3 on higher quality settings. Pixel fill-rate is directly dependent on Frag shader optimizations.
It is pity you will have redone AMD part of 15-way comparison again.
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I've done some ad-hoc comparisons with WebGL demos from the "chrome experiments" site, and R600_DEBUG=sb gives me a solid 50-60% FPS boost with demos that use heavy-weight shaders (blur, raytracing, etc.). Very nice. The Unity dash blur also seems to be noticeably faster.
Looking at the statistics (R600_DEBUG=sb,sbstat) this does not surprise - r600-sb optimizations in many cases brutally reduce the length of the shader program, the number of GPRs used and the number of ALU operations. I haven't noticed any bugs yet.Last edited by brent; 01 May 2013, 10:24 AM.
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Originally posted by pingufunkybeat View PostThis is the patchset which brings Unigine Heaven to Windows 7 performance.
Things just keep getting better and better!
And to think that OpenCL is making progress and that the PM code has already been written and is awaiting release.... W00t w00t!
Congrats AMD and every developer involved!
The PM is really one big cons of the FOSS driver atm, let's hope it turns out as good as fglrx so I and many people can say a final goodbye to closed drivers.Last edited by Azultra; 01 May 2013, 12:20 PM.
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Looks more likely I'll switch back to the OSS drivers for my 4670 card. Waiting for the benchmarks from Michael to make my decision.
Now we just need better opengl compliance and power managements and then the OSS drivers will be able to replace fglrx for the majority of users.
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Wow, Vadim replied in less than an hour, fast customer service that
It built now, but the results are pretty bad on my RV710 (HD 4350).
glxgears has wrong output:
Also some of my private apps regressed badly, 28 -> 7 fps, visual errors, and a pegged cpu core.
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