From 7cc604ed1b5c7f9c06811458ddf0ac0f33412304 Mon Sep 17 00:00:00 2001
From: Sagar Ghuge <sagar.ghuge@intel.com>
Date: Mon, 8 Apr 2024 15:10:39 -0700
Subject: [PATCH] anv: Fix typo in DestinationAlphaBlendFactor value

Workaround states that if Destination Alpha Blend
Factor==BLENDFACTOR_ZERO, instead use BLENDFACTOR_CONST_ALPHA with the
constant alpha set to 0.

We had typo while setting the DestinationAlphaBlendFactor, use
BLENDFACTOR_CONST_ALPHA instead of BLENDFACTOR_CONST_COLOR.

Signed-off-by: Sagar Ghuge <sagar.ghuge@intel.com>
Cc: mesa-stable
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28640>
---
 src/intel/vulkan/genX_gfx_state.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/intel/vulkan/genX_gfx_state.c b/src/intel/vulkan/genX_gfx_state.c
index 3d7c8607e79..05e80423274 100644
--- a/src/intel/vulkan/genX_gfx_state.c
+++ b/src/intel/vulkan/genX_gfx_state.c
@@ -1062,7 +1062,7 @@ genX(cmd_buffer_flush_gfx_runtime_state)(struct anv_cmd_buffer *cmd_buffer)
       SET(PS_BLEND, ps_blend.ColorBufferBlendEnable, GET(blend.rts[0].ColorBufferBlendEnable));
       SET(PS_BLEND, ps_blend.SourceAlphaBlendFactor, GET(blend.rts[0].SourceAlphaBlendFactor));
       SET(PS_BLEND, ps_blend.DestinationAlphaBlendFactor, gfx->alpha_blend_zero ?
-                                                          BLENDFACTOR_CONST_COLOR :
+                                                          BLENDFACTOR_CONST_ALPHA :
                                                           GET(blend.rts[0].DestinationAlphaBlendFactor));
       SET(PS_BLEND, ps_blend.SourceBlendFactor, GET(blend.rts[0].SourceBlendFactor));
       SET(PS_BLEND, ps_blend.DestinationBlendFactor, gfx->color_blend_zero ?