[gtk/wip/chergert/macos-iosurface] more tweaks

[Christian Hergert <chergert src gnome org>]

commit ec346ee76387a15ec23646cc2dafa6636b5a1c1a
Author: Christian Hergert <christian hergert me>
Date:   Fri Feb 11 16:52:09 2022 -0800

    more tweaks

 gdk/macos/GdkMacosTile.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/gdk/macos/GdkMacosTile.c b/gdk/macos/GdkMacosTile.c
index 54e90434f5..737c719e0d 100644
--- a/gdk/macos/GdkMacosTile.c
+++ b/gdk/macos/GdkMacosTile.c
@@ -31,18 +31,20 @@
   self = [super init];
 
   [self setContentsScale:1.0];
+  [self setEdgeAntialiasingMask:0];
+  [self setDrawsAsynchronously:YES];
 
   return self;
 }
 
 -(void)swapBuffer:(IOSurfaceRef)buffer withRect:(CGRect)rect
 {
-  if (self.contents == (id)buffer)
+  if G_LIKELY ([self contents] == (id)buffer)
     [(id<CanSetContentsChanged>)self setContentsChanged];
   else
-    self.contents = (id)buffer;
+    [self setContents:(id)buffer];
 
-  if (!CGRectEqualToRect ([self contentsRect], rect))
+  if G_UNLIKELY (!CGRectEqualToRect ([self contentsRect], rect))
     self.contentsRect = rect;
 }