8a94d15fba
Inject front face only if the fragment shader uses it and propagate through all channels because otherwise we'll need to figure out the exact swizzle that the fs expects and it's just simpler to make sure all the components within the front face register are correctly set. Signed-off-by: Zack Rusin <zackr@vmware.com> Reviewed-by: Roland Scheidegger <sroland@vmware.com> Reviewed-by: Jose Fonseca <jfonseca@vmware.com> Reviewed-by: Brian Paul <brianp@vmware.com>