Fix T43694, by Krzysztof Rećko (chrisr), reviewed in D1177.

Added some guards to prevent clumping to non existing particles. Also, adjusted threaded child path evaluation, so each child is evaluated once - previously virtual parents were done twice.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/blenkernel/BKE_particle.h b/source/blender/blenkernel/BKE_particle.h
index 0f1389bfeec..619c061cea5 100644
--- a/source/blender/blenkernel/BKE_particle.h
+++ b/source/blender/blenkernel/BKE_particle.h
@@ -361,7 +361,7 @@ void psys_get_dupli_path_transform(struct ParticleSimulationData *sim, struct Pa
 
 void psys_thread_context_init(struct ParticleThreadContext *ctx, struct ParticleSimulationData *sim);
 void psys_thread_context_free(struct ParticleThreadContext *ctx);
-void psys_tasks_create(struct ParticleThreadContext *ctx, int totpart, struct ParticleTask **r_tasks, int *r_numtasks);
+void psys_tasks_create(struct ParticleThreadContext *ctx, int startpart, int endpart, struct ParticleTask **r_tasks, int *r_numtasks);
 void psys_tasks_free(struct ParticleTask *tasks, int numtasks);
 
 void psys_make_billboard(ParticleBillboardData *bb, float xvec[3], float yvec[3], float zvec[3], float center[3]);