Dirt: Showdown bad performance and broken rendering with enabled advanced lightning
Submitted by Gregor Münch
Assigned to Default DRI bug account
Created attachment 130078 menu options
With higher GL versions, Dirt enables "advanced lighting" options in the graphics menu. Setting this to "On" makes the game basically a slide show. FPS is going down from 60 to 10.
Im on a Radeon HD 7970. Also all other Radeon cards seems to have a performance problem: http://www.phoronix.com/scan.php?page=article&item=mesa171-pro60-rx470&num=2
where figures looked better in 2015 (but probably because Opengl 4.5 wasnt there) http://www.phoronix.com/scan.php?page=article&item=dirt-showdown-linux&num=3
Some more infos about the lightning options: http://www.rage3d.com/articles/gaming/codemaster_dirt_showdown_tech_review/index.php?p=2