[Mesa-dev] [PATCH 0/6] Initial no-op implementation of `precise`

[Chris Forbes]

This series adds compiler support for the `precise` qualifier from
ARB_gpu_shader5. The precise flag is propagated as far as the GLSL IR,
but nothing further is done beyond that point.

This was suggested by Ian as an acceptable initial approach until we
have tesselation shaders (where possible geometry cracking makes actually
honoring the `precise` qualifier important.)