On Wed, Mar 18, 2015 at 11:37 AM, Matt Turner <matts...@gmail.com> wrote:
> Transform this into b2f(or(a, b)).
>
> instructions in affected programs: 432 -> 430 (-0.46%)
> helped: 2
> ---
> src/glsl/nir/nir_opt_algebraic.py | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/src/glsl/nir/nir_opt_algebraic.py
> b/src/glsl/nir/nir_opt_algebraic.py
> index f956edf..1ee51a0 100644
> --- a/src/glsl/nir/nir_opt_algebraic.py
> +++ b/src/glsl/nir/nir_opt_algebraic.py
> @@ -97,6 +97,7 @@ optimizations = [
> (('fmin', ('fmax', ('fmin', ('fmax', a, 0.0), 1.0), 0.0), 1.0), ('fmin',
> ('fmax', a, 0.0), 1.0)),
> # Emulating booleans
> (('fmul', ('b2f', a), ('b2f', b)), ('b2f', ('iand', a, b))),
> + (('fsat', ('fadd', ('b2f', a), ('b2f', b))), ('b2f', ('ior', a, b))),
Thanks to the fact that this is an or, this should work regardless of
whether or not a and b are booleans.
Reviewed-by: Jason Ekstrand <jason.ekstr...@intel.com>
> # Comparison with the same args. Note that these are not done for
> # the float versions because NaN always returns false on float
> # inequalities.
> --
> 2.0.5
>
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