Bug 50360

Summary:	flightgear has absymal performance with the llvm shader compiler
Product:	Mesa	Reporter:	almos <aaalmosss>
Component:	Drivers/Gallium/r600	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium	CC:	jannis-lists
Version:	git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	patch

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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