Fix T57633: Particle texture update problem

Textures are now hooked up to the RESET operation of particle
settings, which ensures particles being re-distributed when
texture is changed.

This is limited to a direct user modifications, which matches
old behavior in 2.79.

1 files changed, 14 insertions, 5 deletions

diff --git a/source/blender/blenkernel/intern/particle_system.c b/source/blender/blenkernel/intern/particle_system.c
index 2cb9dd0e6f7..8d09215c564 100644
--- a/source/blender/blenkernel/intern/particle_system.c
+++ b/source/blender/blenkernel/intern/particle_system.c
@@ -4427,16 +4427,25 @@ void BKE_particlesystem_id_loop(ParticleSystem *psys, ParticleSystemIDFunc func,
 
 /* **** Depsgraph evaluation **** */
 
+void BKE_particle_settings_eval_reset(
+        struct Depsgraph *depsgraph,
+        ParticleSettings *particle_settings)
+{
+	DEG_debug_print_eval(depsgraph,
+	                     __func__,
+	                     particle_settings->id.name,
+	                     particle_settings);
+	particle_settings->id.recalc |= ID_RECALC_PSYS_RESET;
+}
+
 void BKE_particle_system_eval_init(struct Depsgraph *depsgraph,
-                                   Scene *scene,
-                                   Object *ob)
+                                   Object *object)
 {
-	DEG_debug_print_eval(depsgraph, __func__, ob->id.name, ob);
-	for (ParticleSystem *psys = ob->particlesystem.first;
+	DEG_debug_print_eval(depsgraph, __func__, object->id.name, object);
+	for (ParticleSystem *psys = object->particlesystem.first;
 	     psys != NULL;
 	     psys = psys->next)
 	{
 		psys->recalc |= (psys->part->id.recalc & ID_RECALC_PSYS_ALL);
 	}
-	BKE_ptcache_object_reset(scene, ob, PTCACHE_RESET_DEPSGRAPH);
 }