[Bf-blender-cvs] [6899dcab533] master: Fix T88658: Force Fields of curve shape can crash if curve has only one point
Philipp Oeser
noreply at git.blender.org
Tue Jun 1 13:43:12 CEST 2021
Commit: 6899dcab5339d1f17dd2ea665a38e4ab28ab23fc
Author: Philipp Oeser
Date: Sun May 30 22:26:31 2021 +0200
Branches: master
https://developer.blender.org/rB6899dcab5339d1f17dd2ea665a38e4ab28ab23fc
Fix T88658: Force Fields of curve shape can crash if curve has only one point
`bvhtree_from_mesh_edges_create_tree` can actually leave the BVHTree
NULL (e.g. if no edges are present).
Now dont allocate `BVHTreeFromMesh` on the `SurfaceModifierData` at all
in case the tree would be NULL anyways.
Places like `get_effector_data` check for `SurfaceModifierData`-
>`BVHTreeFromMesh` and dont try to stuff like getting a closest point on
surface, which would crash as soon as BVHNodes would need to be accessed
(from the NULL BVHTree).
Maniphest Tasks: T88658
Differential Revision: https://developer.blender.org/D11443
===================================================================
M source/blender/modifiers/intern/MOD_surface.c
===================================================================
diff --git a/source/blender/modifiers/intern/MOD_surface.c b/source/blender/modifiers/intern/MOD_surface.c
index d2c011a21d3..bfd4cd81803 100644
--- a/source/blender/modifiers/intern/MOD_surface.c
+++ b/source/blender/modifiers/intern/MOD_surface.c
@@ -184,13 +184,17 @@ static void deformVerts(ModifierData *md,
surmd->cfra = cfra;
- surmd->bvhtree = MEM_callocN(sizeof(BVHTreeFromMesh), "BVHTreeFromMesh");
+ const bool has_poly = surmd->mesh->totpoly > 0;
+ const bool has_edge = surmd->mesh->totedge > 0;
+ if (has_poly || has_edge) {
+ surmd->bvhtree = MEM_callocN(sizeof(BVHTreeFromMesh), "BVHTreeFromMesh");
- if (surmd->mesh->totpoly) {
- BKE_bvhtree_from_mesh_get(surmd->bvhtree, surmd->mesh, BVHTREE_FROM_LOOPTRI, 2);
- }
- else {
- BKE_bvhtree_from_mesh_get(surmd->bvhtree, surmd->mesh, BVHTREE_FROM_EDGES, 2);
+ if (has_poly) {
+ BKE_bvhtree_from_mesh_get(surmd->bvhtree, surmd->mesh, BVHTREE_FROM_LOOPTRI, 2);
+ }
+ else if (has_edge) {
+ BKE_bvhtree_from_mesh_get(surmd->bvhtree, surmd->mesh, BVHTREE_FROM_EDGES, 2);
+ }
}
}
}
More information about the Bf-blender-cvs
mailing list