Bug 50360 - flightgear has absymal performance with the llvm shader compiler
Summary: flightgear has absymal performance with the llvm shader compiler
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/Gallium/r600 (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Default DRI bug account
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-05-25 11:08 UTC by almos
Modified: 2012-08-24 08:02 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
patch (17.05 KB, patch)
2012-05-25 15:21 UTC, Vadim Girlin 		Details | Splinter Review
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Description almos 2012-05-25 11:08:15 UTC 
I get ~3 fps with the LLVM compiler, while I get ~20 fps with `R600_LLVM=0 fgfs`. The only setting on the 'rendering options' dialog that affects framerate is 'material shaders', when it's off, I get ~50 fps with both compilers.

Other games perform around the same with the two compilers.
Comment 1 Vadim Girlin 2012-05-25 15:21:57 UTC 
Created attachment 62113 [details] [review]
patch

Does this patch help?
Comment 2 almos 2012-05-26 03:15:04 UTC 
(In reply to comment #1)
> Created attachment 62113 [details] [review] [review]
> patch
> 
> Does this patch help?
Yes, it helps a lot. Now I get ~40 fps with both compilers.
Comment 3 Vadim Girlin 2012-08-24 08:02:59 UTC 
Fix pushed with commit 4acf71f01ea1edb253cd38cc059d4af1a2a40bf4

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