https://bugs.winehq.org/show_bug.cgi?id=38699
--- Comment #3 from Henri Verbeet hverbeet@gmail.com --- I suspect I won't be able to look at this anytime soon, but the last couple of lines of the terminal output look somewhat suspicious. They seem to imply the application is trying to read from a D3DFMT_NULL texture, e.g. for texturing or perhaps StretchRect(), but D3DFMT_NULL is realy only meant for rendering to. Unfortunately that may not be related to this bug report at all, but I suppose it's also possible it's supposed to behave as if a NULL texture was bound, in which case the alpha channel would be 1.0.