https://bugs.winehq.org/show_bug.cgi?id=20074
--- Comment #58 from Matteo Bruni matteo.mystral@gmail.com --- (In reply to Lorenzo Ferrillo from comment #53)
Still the bug is NOT present on my game, with all dlls builtins.
Are you sure you're using builtin d3dx9_27.dll (or whatever version of d3dx9 the game uses)? This is probably caused by:
fixme:d3dx:D3DXCreateTextureFromFileInMemoryEx Generation of mipmaps for compressed pixel formats is not implemented yet
which is supposed to be still an issue on plain Wine. I think wine-staging has patches for that though. It's not clear to me if there are additional caveats that might make the bug not reproducible sometimes. Comment 21 seems like the easiest way to test for the bug.
Can you attach a +d3dx,+loaddll log with current plain wine?