Tested with latest build 5.8.2016.
Driver: Crimson 16.7.3
Hair PS is connected with OpenCl issue on AMD 7870. (GCN1, Pitcairn).
Reproducing steps:
- Cube with hair PS is on scene (not in camera view)
- Render result:
- Cube with hair PS is on scene (not in camera view) with restrict rendering
- Render result (renders fine):
Conclusion: If object with hair PS is on scene, there are some shading issues.