cocoa-cb: change handling of window aspect ratio changes

i tried being smart and handle aspect ratio differences manually via
atomic drawing and resizing to aspect fitted frames. there were a few
issues with that. like unexpected visibility of certain System GUI
elements on entering fullscreen or visually dropped frames due to the
atomic drawing. now we rely on system mechanics to keep the proper
aspect ratio of our layer, the recommended way. as a side effect it also
fixes a segfault.

Fixes #5581

1 files changed, 2 insertions, 0 deletions

diff --git a/video/out/cocoa_cb_common.swift b/video/out/cocoa_cb_common.swift
index 426181d13e..c3366ad2f7 100644
--- a/video/out/cocoa_cb_common.swift
+++ b/video/out/cocoa_cb_common.swift
@@ -57,6 +57,7 @@ class CocoaCB: NSObject {
         layer = VideoLayer(cocoaCB: self)
         view.layer = layer
         view.wantsLayer = true
+        view.layerContentsPlacement = .scaleProportionallyToFit
     }
 
     func setMpvHandle(_ ctx: OpaquePointer) {
@@ -133,6 +134,7 @@ class CocoaCB: NSObject {
             if !window.isVisible {
                 window.makeKeyAndOrderFront(nil)
             }
+            layer.atomicDrawingStart()
             window.updateSize(wr.size)
         }
     }