Fix T60599: Multires crash after doing dyntopo sculpt

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/subdiv_displacement_multires.c b/source/blender/blenkernel/intern/subdiv_displacement_multires.c
index 5727c8d487b..638f7200145 100644
--- a/source/blender/blenkernel/intern/subdiv_displacement_multires.c
+++ b/source/blender/blenkernel/intern/subdiv_displacement_multires.c
@@ -479,6 +479,11 @@ void BKE_subdiv_displacement_attach_from_multires(
 {
 	/* Make sure we don't have previously assigned displacement. */
 	BKE_subdiv_displacement_detach(subdiv);
+	/* It is possible to have mesh without MDISPS layer. Happens when using
+	 * dynamic topology. */
+	if (!CustomData_has_layer(&mesh->ldata, CD_MDISPS)) {
+		return;
+	}
 	/* Allocate all required memory. */
 	SubdivDisplacement *displacement = MEM_callocN(sizeof(SubdivDisplacement),
 	                                               "multires displacement");