File one_swizzle_to_rule_them_all.patch of Package MozillaThunderbird.40006

# HG changeset patch

From: Martin Sirringhaus <martin.sirringhaus@suse.com>

# User M. Sirringhaus <msirringhaus@suse.de>
# Date 1645518286 -3600
#      Tue Feb 22 09:24:46 2022 +0100
# Node ID 494640792b4677f6462e95b90a54a4e22aeb738b
# Parent  81832d035e101471dcf52dd91de287268add7a91
imported patch one_swizzle_to_rule_them_all.patch
---
 gfx/webrender_bindings/RenderCompositorSWGL.cpp |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gfx/webrender_bindings/RenderCompositorSWGL.cpp b/gfx/webrender_bindings/RenderCompositorSWGL.cpp
index 664416a407a8..2b0e9e16adb7 100644
--- a/gfx/webrender_bindings/RenderCompositorSWGL.cpp
+++ b/gfx/webrender_bindings/RenderCompositorSWGL.cpp
@@ -7,6 +7,7 @@
 #include "RenderCompositorSWGL.h"
 
 #include "mozilla/gfx/Logging.h"
+#include "mozilla/gfx/Swizzle.h"
 #include "mozilla/widget/CompositorWidget.h"
 
 #ifdef MOZ_WIDGET_GTK
@@ -240,6 +241,13 @@ void RenderCompositorSWGL::CommitMappedBuffer(bool aDirty) {
   }
   mDT->Flush();
 
+#if MOZ_BIG_ENDIAN()
+  // One swizzle to rule them all.
+  gfx::SwizzleData(mMappedData, mMappedStride, gfx::SurfaceFormat::B8G8R8A8,
+                   mMappedData, mMappedStride, gfx::SurfaceFormat::A8R8G8B8,
+                   mDT->GetSize());
+#endif
+
   // Done with the DT. Hand it back to the widget and clear out any trace of it.
   mWidget->EndRemoteDrawingInRegion(mDT, mDirtyRegion);
   mDirtyRegion.SetEmpty();