Fix T43471, based on patch submitted by @sean_loh.

Particle textures always override timing information of particles.
Previously particle times could be scripted, but now these changes are
discarded by the texture evaluation function.

The patch disables texture overriding when no textures are defined, this
way at least some old scripts can keep working.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/blenkernel/BKE_particle.h b/source/blender/blenkernel/BKE_particle.h
index a5f12bb9a3c..6b94797b000 100644
--- a/source/blender/blenkernel/BKE_particle.h
+++ b/source/blender/blenkernel/BKE_particle.h
@@ -403,7 +403,7 @@ float psys_get_dietime_from_cache(struct PointCache *cache, int index);
 void psys_free_pdd(struct ParticleSystem *psys);
 
 float *psys_cache_vgroup(struct DerivedMesh *dm, struct ParticleSystem *psys, int vgroup);
-void psys_get_texture(struct ParticleSimulationData *sim, struct ParticleData *pa, struct ParticleTexture *ptex, int event, float cfra);
+bool psys_get_texture(struct ParticleSimulationData *sim, struct ParticleData *pa, struct ParticleTexture *ptex, int event, float cfra);
 void psys_interpolate_face(struct MVert *mvert, struct MFace *mface, struct MTFace *tface,
                            float (*orcodata)[3], float w[4], float vec[3], float nor[3], float utan[3], float vtan[3],
                            float orco[3], float ornor[3]);