https://bugs.winehq.org/show_bug.cgi?id=32083
--- Comment #20 from Zeke Sonxx zeke@zekesonxx.com --- (In reply to super_man from comment #19)
(In reply to Zeke Sonxx from comment #18)
I can confirm that the issue still exists on Wine 1.9.4. The splash screen does, however, show up when I launch the game in my Windows 7 VM.
Some poking around the executable has revealed that the launcher image is a bitmap (.bmp) image. (Diablo III.exe/.rsrc/1033/BITMAP/10033.bmp).
Could you open that file with some file editor that exposes the file details?
[snip]/rsrc/1033/BITMAP $ file 10033.bmp 10033.bmp: PC bitmap, Windows 3.x format, 770 x 423 x 32
Sure, although I'm not sure what 'file editor' you're looking for here.