On 23 March 2016 at 01:37, Brian Paul <bri...@vmware.com> wrote: > On 03/21/2016 04:02 PM, Dave Airlie wrote: >> >> From: Dave Airlie <airl...@redhat.com> >> >> This is a mask of which of the current 2x2 grid are non-helper >> invocations. This allows us to mask off the helper invocations >> later for the image operations. > > > Can you elaborate on what a helper invocation is somewhere in the comments?
It's defined in the GLSL 4.5 spec. "A helper invocation is a fragment-shader invocation that is created solely for the purposes of evaluating derivatives for use in non-helper fragment-shader invocations." Then there is a big chunk of text, I could add a comment saying it's in the spec. Dave. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
