[Mesa-dev] [PATCH 10/10] mesa/st: set compiler options based on Gallium shader caps

[Luca Barbieri]

Jose Fonseca seemed open to accepting this, but no final go ahead was given.

> We need this to enable full loop unrolling for r3xx->r4xx fragment shaders,
> which don't support loops. It's needed for the blur shader in KWin to work.
> This is a regression since the GLSL compiler merge, because the previous
> compiler did unroll loops automatically. I'd like to get this fixed for 7.9.

nv30 has the same needs (and other cards are likely to get some
performance boost from unrolling).