[gtk/wip/chergert/gdk-macos-for-master: 2/2] macos: explicitly request color and alpha sizes

[Christian Hergert <chergert src gnome org>]

commit bc05da8dc0e38e8ff56805d85444aec686c131b5
Author: Christian Hergert <chergert redhat com>
Date:   Thu Nov 5 13:37:25 2020 -0800

    macos: explicitly request color and alpha sizes

 gdk/macos/gdkmacosglcontext.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gdk/macos/gdkmacosglcontext.c b/gdk/macos/gdkmacosglcontext.c
index e3d72e54d9..df8f66b136 100644
--- a/gdk/macos/gdkmacosglcontext.c
+++ b/gdk/macos/gdkmacosglcontext.c
@@ -101,6 +101,8 @@ create_pixel_format (int      major,
     NSOpenGLPFAAccelerated,
     NSOpenGLPFADoubleBuffer,
     NSOpenGLPFABackingStore,
+    NSOpenGLPFAColorSize, 32,
+    NSOpenGLPFAAlphaSize, 8,
 
     (NSOpenGLPixelFormatAttribute)nil
   };