[gtk/wip/chergert/macos-iosurface] macos: update CGL context when surface resizes

[Christian Hergert <chergert src gnome org>]

commit e1d3d01e2fbafd51b5d764d03a40607073a3e854
Author: Christian Hergert <christian hergert me>
Date:   Tue Feb 22 13:15:25 2022 -0800

    macos: update CGL context when surface resizes

 gdk/macos/gdkmacosglcontext.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gdk/macos/gdkmacosglcontext.c b/gdk/macos/gdkmacosglcontext.c
index b062196ba8..5baff95a9b 100644
--- a/gdk/macos/gdkmacosglcontext.c
+++ b/gdk/macos/gdkmacosglcontext.c
@@ -532,6 +532,9 @@ gdk_macos_gl_context_surface_resized (GdkDrawContext *draw_context)
   g_assert (GDK_IS_MACOS_GL_CONTEXT (self));
 
   g_clear_pointer (&self->damage, cairo_region_destroy);
+
+  if (self->cgl_context != NULL)
+    CGLUpdateContext (self->cgl_context);
 }
 
 static gboolean