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Sculpt: Fix T102567: multires crash with high subdivision levels

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Previous fix did not work for ngons.
The pbvh leaf limit minimum is now set
to the maximum ngon's vertex count.
This commit is contained in:
Joseph Eagar
2022-11-20 07:30:14 -08:00
parent 41d29a1603
commit 5097105b3c
1 changed files with 9 additions and 1 deletions
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10
source/blender/blenkernel/intern/pbvh.c
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@@ -834,11 +834,19 @@ void BKE_pbvh_build_grids(PBVH *pbvh,
pbvh->grid_hidden = grid_hidden;
pbvh->subdiv_ccg = subdiv_ccg;
/* Find maximum number of grids per face. */
int max_grids = 1;
MPoly *mpoly = BKE_mesh_polys(me);
for (int i = 0; i < me->totpoly; i++) {
max_grids = max_ii(max_grids, mpoly[i].totloop);
}
/* Ensure leaf limit is at least 4 so there's room
* to split at original face boundaries.
* Fixes T102209.
*/
pbvh->leaf_limit = max_ii(LEAF_LIMIT / (gridsize * gridsize), 4);
pbvh->leaf_limit = max_ii(LEAF_LIMIT / (gridsize * gridsize), max_grids);
/* We need the base mesh attribute layout for PBVH draw. */
pbvh->vdata = &me->vdata;