Created attachment 128567 [details]
Image differences of "Trine 2" using Mesa13 vs AMDGPU-PRO

Image differences of "Trine 2" using Mesa13 vs AMDGPU-PRO

Overview:
There are some possible shader issues when comparing screen shots of "Trine 2"
with Mesa13 to AMD's AMDGPU-PRO.

Hardware and versions: 
The images were captured Using the Mesa 13.0 branch and AMD's AMDGPU-PRO's
16.30 driver. These image differences were observed on both AMD's Rx470 and R9
Fury graphic cards.

Attached Images:
Attached are the captured images.