Re: [PATCH v2 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/surface.c:
> - if (shape_changed || surface->shape_changed)
> {
> -
>    surface->shape_changed = FALSE;
> -
> -
>    /* No shape, fully opaque */
>    if (!shape_bits)
> -
>        macdrv_window_set_shape_image(surface->window, NULL);
> -
>    {
> -
>        Pixel_8888 alpha1 = { 0, 0, 0, 255 };
> -
>        vImage_Buffer dst = {
> -
>            .data = IOSurfaceGetBaseAddress(io_surface),
> -
>            .height = IOSurfaceGetHeight(io_surface),
> -
>            .width = IOSurfaceGetWidth(io_surface),
> -
>            .rowBytes = IOSurfaceGetBytesPerRow(io_surface),
> -
>        };
> -
>        vImageOverwriteChannelsWithPixel_ARGB8888(alpha1, &dst, &dst, 0x1, kvImageNoFlags);

Need to unlock/lock `io_surface` around this call