https://bugs.winehq.org/show_bug.cgi?id=39150
--- Comment #24 from winetest@luukku.com --- (In reply to Lunknown from comment #23)
Hello Wine-test,
Sorry thats what shipped with slackware 14.2. And it should be mesa-11.2.2.
https://www.mesa3d.org/ https://mesamatrix.net/
Your mesa driver is around 1 year behind in development. I really would suggest to upgrade, but that can be a bit hard. I am using ppa myself. I think wine 2.8 release had some fix for lightning, but I have no idea if it helps this bug.