macos: only flush when not attached

This makes it so we only flush the context for the NSView, not the context
that is the center of our center of the GL context spokes.

diff --git a/gdk/macos/gdkmacosglcontext.c b/gdk/macos/gdkmacosglcontext.c
index 8dd6bc2e005c736dfb6ac86decc44d9b34cd8f28..28b3ed7ac74de4ddfe5519128199be2d03b2c535 100644 (file)
--- a/gdk/macos/gdkmacosglcontext.c
+++ b/gdk/macos/gdkmacosglcontext.c
@@ -362,7 +362,8 @@ gdk_macos_gl_context_end_frame (GdkDrawContext *context,
 
   GDK_DRAW_CONTEXT_CLASS (gdk_macos_gl_context_parent_class)->end_frame (context, painted);
 
-  [self->gl_context flushBuffer];
+  if (!self->is_attached)
+    [self->gl_context flushBuffer];
 }
 
 static void