[Mesa-dev] Heavy ioq3 regression in mesa (r600g/cayman/aruba)

[Lauri Kasanen]

On Fri, 18 Apr 2014 10:16:53 +0300
Lauri Kasanen <cand at gmx.com> wrote:

> On Fri, 18 Apr 2014 01:41:46 +0200
> Benjamin Bellec <b.bellec at gmail.com> wrote:
> 
> > Hi Lauri,
> > 
> > I tested with both commit but cannot seeing something relevant, I got 60
> > FPS in both case.
> > I tested with the Tremulous 1.1 test case from Phoronix Test Suite 4.8.6
> > (from Fedora 19 repo).
> > 
> > The command used (for both commit) was:
> > $ vblank_mode=0 R600_DEBUG=nohyperz phoronix-test-suite Test pts/tremulous
> > 
> > I have a Radeon HD5850 (with 1 GB VRAM).
> > 
> > Any idea to try to spot your issue? (decrease VRAM size?)
> 
> Hi,
> 
> It was visible at all VRAM sizes (both 256mb limited, and 768mb full).
> I also used hyperz to rule it out, ie 
> 
> R600_DEBUG=hyperz phoronix-test-suite run pts/tremulous pts/smokingguns
> 
> It's possible this bug only affects Cayman and/or APUs. Though just
> recently a similar ioq3 regression was reported on Intel.

PS: Please disable swapbufferswait in xorg.conf so you're not limited
to 60fps. PTS passes vblank_mode by itself.

- Lauri