From 89c41a77508ae300d9ebd411da311121bdef336c Mon Sep 17 00:00:00 2001
From: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Date: Tue, 2 Aug 2022 08:31:56 -0400
Subject: [PATCH] zink: reject native blits for emulated alpha formats

these need u_blitter

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17687>
---
 src/gallium/drivers/zink/zink_blit.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/drivers/zink/zink_blit.c b/src/gallium/drivers/zink/zink_blit.c
index 8ad8849..283eccf 100644
--- a/src/gallium/drivers/zink/zink_blit.c
+++ b/src/gallium/drivers/zink/zink_blit.c
@@ -1,4 +1,5 @@
 #include "zink_context.h"
+#include "zink_format.h"
 #include "zink_kopper.h"
 #include "zink_helpers.h"
 #include "zink_query.h"
@@ -137,6 +138,8 @@ blit_native(struct zink_context *ctx, const struct pipe_blit_info *info, bool *n
    if (src->format != zink_get_format(screen, info->src.format) ||
        dst->format != zink_get_format(screen, info->dst.format))
       return false;
+   if (zink_format_is_emulated_alpha(info->src.format))
+      return false;
 
    if (!(src->obj->vkfeats & VK_FORMAT_FEATURE_BLIT_SRC_BIT) ||
        !(dst->obj->vkfeats & VK_FORMAT_FEATURE_BLIT_DST_BIT))
-- 
2.7.4