From 7fc0a07c88b679f4a8c9fa117ac33a311038acb1 Mon Sep 17 00:00:00 2001
From: water111 <48171810+water111@users.noreply.github.com>
Date: Mon, 30 May 2022 13:05:49 -0400
Subject: [PATCH] [graphics] improve blending when depth write is disabled
 (#1386)

---
 .../opengl_renderer/background/background_common.cpp   | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/game/graphics/opengl_renderer/background/background_common.cpp b/game/graphics/opengl_renderer/background/background_common.cpp
index d3b85535b3..892f39b32d 100644
--- a/game/graphics/opengl_renderer/background/background_common.cpp
+++ b/game/graphics/opengl_renderer/background/background_common.cpp
@@ -103,9 +103,13 @@ DoubleDraw setup_opengl_from_draw_mode(DrawMode mode, u32 tex_unit, bool mipmap)
             // ok, no need for double draw
             break;
           case GsTest::AlphaFail::FB_ONLY:
-            // darn, we need to draw twice
-            double_draw.kind = DoubleDrawKind::AFAIL_NO_DEPTH_WRITE;
-            double_draw.aref_second = alpha_min;
+            if (mode.get_depth_write_enable()) {
+              // darn, we need to draw twice
+              double_draw.kind = DoubleDrawKind::AFAIL_NO_DEPTH_WRITE;
+              double_draw.aref_second = alpha_min;
+            } else {
+              alpha_min = 0.f;
+            }
             break;
           default:
             ASSERT(false);