Re: [PATCH 0/2] MR7938: Draft: winemac: Use IOSurface to update native window layers instead of CGImage.

[Brendan Shanks (＠bshanks)]

Brendan Shanks (@bshanks) commented about dlls/winemac.drv/cocoa_window.m:
>      surfaceRect = rect;
>  }
>
> -
> - (void) setColorImage:(CGImageRef)image
> -
> - (void) setIOSurface:(IOSurfaceRef)image
> {
> -
>    CGImageRelease(colorImage);
> -
>    colorImage = CGImageRetain(image);
> -
>    _IOSurface = image;

`WineWindow` should hold a ref to the IOSurface. There's an `IOSurface` ObjC class (toll-free bridged to IOSurfaceRef) which could save a few lines of code, or `CFRetain`/`CFRelease` should work too.