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radeonsi: set CB_BLEND1_CONTROL.ENABLE for dual source blending

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copied from Vulkan

Cc: 13.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
(cherry picked from commit ff50c44a5f)
This commit is contained in:
Marek Olšák 2016-11-26 15:43:39 +01:00 • committed by Emil Velikov
parent a9e5a98c19
commit 4f71f93878
1 changed files with 4 additions and 0 deletions
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4
src/gallium/drivers/radeonsi/si_state.c
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@ -462,6 +462,10 @@ static void *si_create_blend_state_mode(struct pipe_context *ctx,
/* Only set dual source blending for MRT0 to avoid a hang. */
if (i >= 1 && blend->dual_src_blend) {
/* Vulkan does this for dual source blending. */
if (i == 1)
blend_cntl |= S_028780_ENABLE(1);
si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);
continue;
}