Re: [Mesa-dev] [PATCH 1/2] nir: Add a nir_opt_undef() to handle csels with undef.

Thomas Helland writes: > 2015-08-11 20:25 GMT+02:00 Eric Anholt : >> We may find a cause to do more undef optimization in the future, but for >> now this fixes up things after if flattening. vc4 was handling this >> internally most of the time, but a GLB2.7 shader that did a conditional >> disca

Re: [Mesa-dev] [PATCH 1/2] nir: Add a nir_opt_undef() to handle csels with undef.

On Tue, Aug 11, 2015 at 1:31 PM, Thomas Helland wrote: > 2015-08-11 20:25 GMT+02:00 Eric Anholt : >> We may find a cause to do more undef optimization in the future, but for >> now this fixes up things after if flattening. vc4 was handling this >> internally most of the time, but a GLB2.7 shader

Re: [Mesa-dev] [PATCH 1/2] nir: Add a nir_opt_undef() to handle csels with undef.

2015-08-11 20:25 GMT+02:00 Eric Anholt : > We may find a cause to do more undef optimization in the future, but for > now this fixes up things after if flattening. vc4 was handling this > internally most of the time, but a GLB2.7 shader that did a conditional > discard and assign gl_FragColor in t

Re: [Mesa-dev] [PATCH 1/2] nir: Add a nir_opt_undef() to handle csels with undef.

2015-08-11 20:25 GMT+02:00 Eric Anholt : > We may find a cause to do more undef optimization in the future, but for > now this fixes up things after if flattening. vc4 was handling this > internally most of the time, but a GLB2.7 shader that did a conditional > discard and assign gl_FragColor in t

[Mesa-dev] [PATCH 1/2] nir: Add a nir_opt_undef() to handle csels with undef.

We may find a cause to do more undef optimization in the future, but for now this fixes up things after if flattening. vc4 was handling this internally most of the time, but a GLB2.7 shader that did a conditional discard and assign gl_FragColor in the else was still emitting some extra code. tota