From 3a4366363042722d642b492788377407587c7886 Mon Sep 17 00:00:00 2001
From: Christian Hergert <chergert@redhat.com>
Date: Mon, 8 Feb 2021 15:30:58 -0800
Subject: [PATCH] gl: handle B8G8R8 texture data when uploading

We do not need to translate this on the CPU when we can instead push it
to the GPU in the same format and allow it to swizzle.

This fixes a huge number of memory allocations found while uploading the
GTK animation in widget-factory.
---
 gdk/gdkglcontext.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gdk/gdkglcontext.c b/gdk/gdkglcontext.c
index 5d73080b9b..3bc52b74fb 100644
--- a/gdk/gdkglcontext.c
+++ b/gdk/gdkglcontext.c
@@ -271,6 +271,12 @@ gdk_gl_context_upload_texture (GdkGLContext    *context,
           gl_type = GL_UNSIGNED_BYTE;
           bpp = 3;
         }
+      else if (data_format == GDK_MEMORY_B8G8R8)
+        {
+          gl_format = GL_BGR;
+          gl_type = GL_UNSIGNED_BYTE;
+          bpp = 3;
+        }
       else /* Fall-back, convert to cairo-surface-format */
         {
           copy = g_malloc (width * height * 4);