https://bugs.winehq.org/show_bug.cgi?id=41098
--- Comment #6 from Henri Verbeet hverbeet@gmail.com --- I guess the issue is more subtle than just the pixel format then. You could perhaps also try WINED3DFMT_B8G8R8X8_UNORM for the color format, which in theory should result in the exact same pixel format as before c92451f295242110bf016facf0e80564f3643d94, but the general issue is that mixing OpenGL and Direct3D on the same thread/drawable just doesn't work reliably.