RADV needs this to skip if there is no alpha component
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33340>
The VK spec says:
coverage value is multiplied into the color location 0’s
alpha value after fragment shading
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33340>
The if is really short so it should really use a conditional select,
but this pass is called too late go through all the usual lowerings
and opts.
Foz-DB Navi21:
Totals from 1128 (1.42% of 79377) affected shaders:
MaxWaves: 29358 -> 29342 (-0.05%)
Instrs: 552306 -> 549668 (-0.48%); split: -0.58%, +0.10%
CodeSize: 2796392 -> 2782360 (-0.50%); split: -0.59%, +0.08%
Latency: 2574361 -> 2566482 (-0.31%); split: -0.47%, +0.16%
InvThroughput: 644047 -> 647500 (+0.54%); split: -0.18%, +0.72%
Copies: 37521 -> 36460 (-2.83%); split: -2.92%, +0.09%
Branches: 12009 -> 10157 (-15.42%)
VALU: 350886 -> 349199 (-0.48%); split: -0.64%, +0.16%
SALU: 104459 -> 105415 (+0.92%); split: -0.00%, +0.92%
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33340>
When poly_line smoothing is enabled then this lowering pass will
modify the alpha component of every write to fragment output
using sample coverage mask.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16245>
