https://bugs.winehq.org/show_bug.cgi?id=14939
--- Comment #59 from Austin English austinenglish@gmail.com --- (In reply to Mike McQuaid from comment #57)
Either way, the attached patch is not acceptable for upstreaming at the moment, if nothing else for the patent reasons mentioned.
Could you suggest how the patent reasons could be resolved and what would need to be done for this patch to be upstreamed? Thanks.
https://en.wikipedia.org/wiki/S3_Texture_Compression#Patent
Though it looks like it's close to running out (Oct 2, 2017).