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

[Benjamin Bellec]

I disabled vsync and tested with Tremulous.
I didn't see any regression on my system, I got 256-257 FPS with or
without HyperZ, with this 2 commits and also current master (git-352e06d).
So it doesn't hit Evergreen at least.

Le 18/04/2014 09:20, Lauri Kasanen a écrit :
> 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