nir, ac/nir: Add workgroup divergence analysis pass and use it for mesh shader output counts (!27797) · Merge requests · Mesa / mesa

Adds a pass (similar to vertex divergence analysis) which deals with workgroup-divergence (as opposed to the default subgroup-divergence).

Then, use this pass in ac_nir_lower_ngg_ms to handle the output counts more optimally.

nir, ac/nir: Add workgroup divergence analysis pass and use it for mesh shader output counts