Fix T94969: Crash in Volume to Mesh with 0 voxels

Checks if voxel amount or -size is <= 0 and if so, returns early.

Differential Revision: https://developer.blender.org/D15241

1 files changed, 10 insertions, 0 deletions

diff --git a/source/blender/nodes/geometry/nodes/node_geo_volume_to_mesh.cc b/source/blender/nodes/geometry/nodes/node_geo_volume_to_mesh.cc
index 8770fa2b74b..e1d1c67b8c8 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_volume_to_mesh.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_volume_to_mesh.cc
@@ -153,6 +153,16 @@ static Mesh *create_mesh_from_volume(GeometrySet &geometry_set, GeoNodeExecParam
   }
 
   const bke::VolumeToMeshResolution resolution = get_resolution_param(params);
+
+  if (resolution.mode == VOLUME_TO_MESH_RESOLUTION_MODE_VOXEL_SIZE &&
+      resolution.settings.voxel_size <= 0.0f) {
+    return nullptr;
+  }
+  if (resolution.mode == VOLUME_TO_MESH_RESOLUTION_MODE_VOXEL_AMOUNT &&
+      resolution.settings.voxel_amount <= 0) {
+    return nullptr;
+  }
+
   const Main *bmain = DEG_get_bmain(params.depsgraph());
   BKE_volume_load(volume, bmain);