https://bugs.freedesktop.org/show_bug.cgi?id=93591
--- Comment #6 from EoD EoD@xmw.de --- (In reply to Nicolai Hähnle from comment #5)
So, I've looked into this again out of curiosity, because I do have an LLVM patch that can be used to work around this. However, the patch introduces some inefficiencies, and this is a game bug: it is clear from playing with the provided apitrace that a derivative is taken after a non-uniform discard/kill, which is undefined behaviour in GLSL.
Does anybody paying attention to this bug report know of a way to contact the game developer about this?
Unfortunately there seems to be no bugtracker. The list of (core) devs can be found on their homepage http://www.instinctgames.com/#c-about-us together with email info@instinctgames.com and phone +20222913556 though.
They are apparently also use Twitter: https://twitter.com/instinctgames Facebook: https://www.facebook.com/InstinctGames Linkedin: https://www.linkedin.com/company/instinct-games
I could find the linkedin profile of one of the graphics engine programmers too: https://www.linkedin.com/in/mohammad-yusuf-2b7531a7