Partial fix of T44881: Fix for missing particles update when changing seed

Was only visible with new dependency graph.

Changing emit_from still doesn't behave fully reliably tho, that needs some
closer investigation.

2 files changed, 3 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_particle.h b/source/blender/blenkernel/BKE_particle.h
index 32325707c9a..89cfb3a2aac 100644
--- a/source/blender/blenkernel/BKE_particle.h
+++ b/source/blender/blenkernel/BKE_particle.h
@@ -464,6 +464,7 @@ typedef struct ParticleRenderData {
 struct EvaluationContext;
 
 void BKE_particle_system_eval(struct EvaluationContext *eval_ctx,
+                              struct Scene *scene,
                               struct Object *ob,
                               struct ParticleSystem *psys);
 
diff --git a/source/blender/blenkernel/intern/particle_system.c b/source/blender/blenkernel/intern/particle_system.c
index dd43e63b9c3..9c720126eca 100644
--- a/source/blender/blenkernel/intern/particle_system.c
+++ b/source/blender/blenkernel/intern/particle_system.c
@@ -4212,10 +4212,12 @@ void particle_system_update(Scene *scene, Object *ob, ParticleSystem *psys)
 /* **** Depsgraph evaluation **** */
 
 void BKE_particle_system_eval(EvaluationContext *UNUSED(eval_ctx),
+                              Scene *scene,
                               Object *ob,
                               ParticleSystem *psys)
 {
 	if (G.debug & G_DEBUG_DEPSGRAPH) {
 		printf("%s on %s:%s\n", __func__, ob->id.name, psys->name);
 	}
+	BKE_ptcache_object_reset(scene, ob, PTCACHE_RESET_DEPSGRAPH);
 }