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

[Grigori Goronzy]

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.

Best regards
Grigori