From 3922ae5d92ed1cae480b3b8e667f15f11b1602ac Mon Sep 17 00:00:00 2001
From: Seungha Yang <seungha@centricular.com>
Date: Tue, 16 Jul 2024 20:38:41 +0900
Subject: [PATCH] d3d11compositor: Fix transparent background mode with YUV
 output

In case of YUV format without alpha channel, zero clear value
for each channle will result in green color. Use calculated black
background color with alpha=0 for transparent background mode instead.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7181>
---
 subprojects/gst-plugins-bad/sys/d3d11/gstd3d11compositor.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11compositor.cpp b/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11compositor.cpp
index ca940ae59d..6852bf245e 100644
--- a/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11compositor.cpp
+++ b/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11compositor.cpp
@@ -1544,6 +1544,9 @@ gst_d3d11_compositor_calculate_background_color (GstD3D11Compositor * self,
       }
     }
   }
+
+  self->clear_color[2] = self->clear_color[0];
+  self->clear_color[2].color[0][3] = 0.0;
 }
 
 static gboolean