Blender Git Commit Log
Git Commits -> Revision 4cf2975
Revision 4cf2975 by Bastien Montagne (compositor-2016) June 8, 2016, 19:45 (GMT) |
Dynapaint: parallelize drip effect. Was not so far, because this effect is not modifying its 'own' PaintPoint, which means it's not threadsafe. Since a global lock (mutex or spinlock) would not be much efficient (we need to lock a given point pretty much all the computaion cycle), and since locking a same PaintPOint from different threads at the same time is *very* unlikely, solution here is to use an 'array of locks', one for each PaintPoint (same thing as BLI_bitmap, using atomic ops to set/clear bits). Here in own test (complex dynapaint over a huge sphere combining all dynapaint types), it gives 20% speedup of the whole dynapaint simulation! Note: maybe we'd want to move that kind of bitlock into BLI lib some day - not totally sure how, so let's keep it local for now... |
Commit Details:
Full Hash: 4cf29754dfe2c4f9bb47db9b7caed10dd30f12f6
Parent Commit: 093bfb9
Committed By: Jeroen Bakker
Lines Changed: +128, -66
1 Modified Path:
/source/blender/blenkernel/intern/dynamicpaint.c (+128, -66) (Diff)