[Bug 43062] Installer from GOG.com displays black rectangles
wine-bugs at winehq.org
wine-bugs at winehq.org
Sat May 20 17:03:39 CDT 2017
https://bugs.winehq.org/show_bug.cgi?id=43062
--- Comment #3 from Alexandre Julliard <julliard at winehq.org> ---
That's a gdiplus bug, it uses SHADEBLENDCAPS to check if alpha blending is
supported, but the meaning is different on display devices. Quoting MSDN:
"For a display device, all blending operations are available; besides SB_NONE,
the only return values are SB_CONST_ALPHA and SB_PIXEL_ALPHA, which indicate
whether these operations are accelerated."
It works OK with native gdiplus.
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