https://bugs.freedesktop.org/show_bug.cgi?id=50360
Bug #: 50360 Summary: flightgear has absymal performance with the llvm shader compiler Classification: Unclassified Product: Mesa Version: git Platform: Other OS/Version: All Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: aaalmosss@gmail.com
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.