[Mesa-dev] [PATCH] r600g/sb: improve math optimizations

Vadim Girlin vadimgirlin at gmail.com
Wed Jun 5 06:55:42 PDT 2013

On 06/05/2013 12:01 AM, Grigori Goronzy wrote:
> On 31.05.2013 14:37, Vadim Girlin wrote:
>> There are no regressions on evergreen with piglit tests or any
>> other apps that I tested, with and without llvm backend.
>> (Issue with Unigine Heaven that I mentioned on #dri-devel
>> yesterday was in fact caused by my own well-hidden bug, now it's fixed).
>> Improvements for real apps probably won't be very noticeable in many
>> cases,
>> but this still might help some apps, e.g. this improves shader2 test
>> of the fill benchmark in mesa demos.
> I see noticeable FPS improvements (~7%) with one of my older pixel
> shader effects here, a plasma-like thingie.
> But this also breaks rendering in some other cases, e.g.
> http://www.iquilezles.org/apps/shadertoy/index2.html?p=Heart
> looks wrong. The colors are off.

Thanks for testing, I'll fix this issue and send updated patch.


> Best regards
> Grigori
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