Created attachment 114229 [details]
Screenshot

On the map "Uptown" of the game Urban Terror [1] some light shaders are not
transparent. Attached is a screenshot which shows the incorrect rendering.

How to reproduce:
1. Start Urban Terror
2. Open the console with SHIFT+ESC
3. Type "/map ut4_uptown"
4. Search the parking deck on the map

System: Up-to-date Arch Linux with
- Linux 3.19.1
- Mesa 10.4.6
- Xorg-server 1.17.1
- xf86-video-ati 7.5.0
- Urban Terror 4.2.023

The GPU is a HD6850 (AMD BARTS).

[1] http://www.urbanterror.info/home/