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.

diff --git a/gdk/gdkglcontext.c b/gdk/gdkglcontext.c
index 5d73080b9bb76d3d4458c819771651f0bff7c6f1..3bc52b74fb34e059b82000f4e9b2e9c31a2391dc 100644 (file)
--- 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);