Blender Git Commit Log
Git Commits -> Revision a4a968f
Revision a4a968f by Bastien Montagne (master) May 19, 2016, 12:44 (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: a4a968fd99c0bf473f022a00b6cc756ee9d429cb
Parent Commit: 4b81012
Lines Changed: +128, -66
1 Modified Path:
/source/blender/blenkernel/intern/dynamicpaint.c (+128, -66) (Diff)