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:
> {
>      WineWindow* window = (WineWindow*)w;
>
> -    CGImageRetain(image);
> +    IOSurfaceIncrementUseCount(image);
>
> OnMainThreadAsync(^{
>          WineContentView *view = [window contentView];
>
> -        [view setColorImage:image];
> +        [view setIOSurface:image];
>          [view setSurfaceRect:cgrect_mac_from_win(rect)];
>          [view setNeedsDisplayInRect:NSRectFromCGRect(cgrect_mac_from_win(dirty))];
>
> -        CGImageRelease(image);
> +        IOSurfaceDecrementUseCount(image);
> I think this should be `CFRetain`/`CFRelease` rather than use count, use count seems to be for knowing when an IOSurface can be reused rather than for memory management.

https://github.com/k06a/UIView-FastScreenshot/blob/de71c02b61e59dadde3387491...

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https://gitlab.winehq.org/wine/wine/-/merge_requests/7938#note_104284