[Bug 38581] Petka 1: some objects render without transparency

https://bugs.winehq.org/show_bug.cgi?id=38581

--- Comment #13 from Stefan Dösinger  ---
Wrt HW acceleration, it probably doesn't require it at all. However, none of my
windows systems support range color key (DDCKEY_COLORSPACE) with software nor
hardware blits.

I found some online evidence that old GPUs (i810, some SiS cards) support src
key color spaces, but nothing from Nvidia or ATI, and nothing from the DirectX
9 era or newer.

If the game indeed needs range color keys I'll implement this in Wine, but I
need a Windows machine that supports this feature to find out how it is
supposed to work...