From 4780685745d788437e1aa5e9d5b8db99328712f4 Mon Sep 17 00:00:00 2001
From: Seungha Yang <seungha@centricular.com>
Date: Tue, 16 Jul 2024 23:07:50 +0900
Subject: [PATCH] d3d12compositor: 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/7185>
---
 subprojects/gst-plugins-bad/sys/d3d12/gstd3d12compositor.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12compositor.cpp b/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12compositor.cpp
index 45a545946f..96283d9965 100644
--- a/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12compositor.cpp
+++ b/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12compositor.cpp
@@ -1895,6 +1895,9 @@ gst_d3d12_compositor_calculate_background_color (GstD3D12Compositor * self,
       }
     }
   }
+
+  priv->clear_color[2] = priv->clear_color[0];
+  priv->clear_color[2].color[0][3] = 0.0;
 }
 
 static gboolean