commit a7a2d403fd8983372e61f364ab23ad482e747235
author Samuel Pitoiset <samuel.pitoiset@gmail.com> Thu Jun 06 16:31:01 2019 +0200
committer Juan A. Suarez Romero <jasuarez@igalia.com> Tue Jun 11 07:58:06 2019 +0000
tree 2b06748cfe443c746120c5e3ecd8ff661d559dd8
parent 84bd361217d1a1ab6610368df60ad23b3cd7d94e

radv: fix alpha-to-coverage when there is unused color attachments

When alphaToCoverage is enabled, we should always write the alpha
channel of MRT0 if it's unused. This now matches RadeonSI.

This fixes the new CTS:
dEQP-VK.pipeline.multisample.alpha_to_coverage_unused_attachment.samples_*.alpha_invisible

Cc: 19.0 19.1 <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-By: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl
(cherry picked from commit 91aa25f4625014ddf194578fc1c1d0a505e5f8db)