Blender Git Commit Log

Git Commits -> Revision e180529

June 8, 2017, 09:35 (GMT)
Cycles: Pass all buffers to each kernel call for OpenCL

Technically not passing all buffers used by a kernel is undefined
behavior. We haven't had any issues with this so far on AMD or
Nvidia, but it's known to be a problem with Intel and we received
a report from AMD that this is a problem on newer hardware, so we
need to make this change at some point.

Unfortunately there a cost to being correct, about 5% for the
benchmark scenes. For low sample counts it's even worse, I've
seen up to 50% slowdown. For the latter case I think adjusting
tile updating logic can help, but not sure what that would look
like yet (it would be just a few lines change however).

Commit Details:

Full Hash: e1805299d2f43f8ab473a979bafc7a8b57d9270b
Parent Commit: e7ad962
Lines Changed: +225, -122

By: Miika HämäläinenLast update: Nov-07-2014 14:18 MiikaHweb | 2003-2019