[Mesa-dev] [PATCH 0/2 v2] Add support for clip distances in Gallium

[Jose Fonseca]

----- Original Message -----
> This is an updated version of the patch set I sent to the list a few
> hours
> ago.  


> There is now a TGSI property called
> TGSI_PROPERTY_NUM_CLIP_DISTANCES
> that drivers can use to determine how many of the 8 available clip
> distances
> are actually used by a shader.

Can't the info in TGSI_PROPERTY_NUM_CLIP_DISTANCES be easily derived from the shader, and queried through src/gallium/auxiliary/tgsi/tgsi_scan.h ?


Could you also elaborate on why TGSI_SEMANTIC_CLIPDIST is useful for the drivers? I personally don't have nothing against it, but just like to understand why it makes a difference.

Jose