Kenneth Graunke <kenn...@whitecape.org> writes:
> Dead code elimination would get rid of the extra instructions, but
> skipping this saves iterations through the optimization loop.
>
> From shader-db:
>
> N Min Max Median Avg Stddev
> x 14672 3 16 3 3.1334515 0.59904168
> + 14672 1 16 3 2.8955153 0.77732963
> Difference at 95.0% confidence
> -0.237936 +/- 0.0158798
> -7.59342% +/- 0.506783%
> (Student's t, pooled s = 0.693935)
>
> Embarassingly, the classic shadow mapping shader:
>
> void main() { }
>
> used to require three iterations through the optimization loop.
> With this patch, it only requires one (which makes no progress).Reviewed-by: Eric Anholt <e...@anholt.net>
pgp2dBKoPyomx.pgp
Description: PGP signature
_______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
