st/mesa: For vertex shaders, don't emit saturate when SM 3.0 is unsupported
There is a bug in the current lowering pass implementation where we lower saturate to clamp only for vertex shaders on drivers supporting SM 3.0. The correct behavior is to actually lower to clamp only when we don't support saturate which happens on drivers that don't support SM 3.0 Reviewed-by:Marek Olšák <marek.olsak@amd.com> Reviewed-by:
Matt Turner <mattst88@gmail.com> Signed-off-by:
Abdiel Janulgue <abdiel.janulgue@linux.intel.com> (cherry picked from commit 49e04312) Nominated-by:
Matt Turner <mattst88@gmail.com>
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