[Bug 38274] White water in Heroes VI

https://bugs.winehq.org/show_bug.cgi?id=38274

--- Comment #17 from Stefan Dösinger  ---
We "view" the image when running a game by passing it to OpenGL and let the
driver developers (Nvidia, AMD) bother about the legal stuff. In case of Mesa
OpenGL passes that to the user in the sense of "Install this library. It's your
responsibility now to care for the patent, not ours."

In theory we could also use OpenGL to compress and decompress the textures
without rendering it, but the API architecture, and in particular the
requirement to create an OpenGL context to do that, makes this difficult.

Still, I don't think our ability to create or decompress s3tc textures breaks
your game. It most likely breaks dxtex though.