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mesa: enable msaa in clear_with_quad if needed

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If the DrawBuffer sample count is > 1 and msaa is enabled we must also
enable msaa when clearing it.

Fixes: ea5b7de138 ("radeonsi: make gl_SampleMaskIn = 0x1 when MSAA is disabled")
Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/1991

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Tested-by: Witold Baryluk <witold.baryluk@gmail.com>
(cherry picked from commit 8a723282e3)
This commit is contained in:
Pierre-Eric Pelloux-Prayer 2019-10-29 19:45:48 +01:00 • committed by Dylan Baker
parent 4575aa2a30
commit 6d96ee8507
1 changed files with 1 additions and 0 deletions
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src/mesa/state_tracker/st_cb_clear.c
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@ -325,6 +325,7 @@ clear_with_quad(struct gl_context *ctx, unsigned clear_buffers)
cso_set_stream_outputs(cso, 0, NULL, NULL);
cso_set_sample_mask(cso, ~0);
cso_set_min_samples(cso, 1);
st->clear.raster.multisample = st->state.fb_num_samples > 1;
cso_set_rasterizer(cso, &st->clear.raster);
/* viewport state: viewport matching window dims */