[Bf-blender-cvs] [7935d3668a9] blender-v3.1-release: Fix T95479: geometry nodes crash with cage display
Jacques Lucke
noreply at git.blender.org
Wed Mar 2 16:10:51 CET 2022
Commit: 7935d3668a937ec5046558f9ff885a42a87b3384
Author: Jacques Lucke
Date: Wed Mar 2 16:10:42 2022 +0100
Branches: blender-v3.1-release
https://developer.blender.org/rB7935d3668a937ec5046558f9ff885a42a87b3384
Fix T95479: geometry nodes crash with cage display
Differential Revision: https://developer.blender.org/D14225
===================================================================
M source/blender/modifiers/intern/MOD_nodes.cc
===================================================================
diff --git a/source/blender/modifiers/intern/MOD_nodes.cc b/source/blender/modifiers/intern/MOD_nodes.cc
index a4b46b951a3..269f0d94dc1 100644
--- a/source/blender/modifiers/intern/MOD_nodes.cc
+++ b/source/blender/modifiers/intern/MOD_nodes.cc
@@ -1227,8 +1227,34 @@ static void modifyGeometry(ModifierData *md,
return;
}
+ bool use_orig_index_verts = false;
+ bool use_orig_index_edges = false;
+ bool use_orig_index_polys = false;
+ if (geometry_set.has_mesh()) {
+ const Mesh &mesh = *geometry_set.get_mesh_for_read();
+ use_orig_index_verts = CustomData_has_layer(&mesh.vdata, CD_ORIGINDEX);
+ use_orig_index_edges = CustomData_has_layer(&mesh.edata, CD_ORIGINDEX);
+ use_orig_index_polys = CustomData_has_layer(&mesh.pdata, CD_ORIGINDEX);
+ }
+
geometry_set = compute_geometry(
tree, input_nodes, output_node, std::move(geometry_set), nmd, ctx);
+
+ if (geometry_set.has_mesh()) {
+ /* Add #CD_ORIGINDEX layers if they don't exist already. This is required because the
+ * #eModifierTypeFlag_SupportsMapping flag is set. If the layers did not exist before, it is
+ * assumed that the output mesh does not have a mapping to the original mesh. */
+ Mesh &mesh = *geometry_set.get_mesh_for_write();
+ if (use_orig_index_verts) {
+ CustomData_add_layer(&mesh.vdata, CD_ORIGINDEX, CD_DEFAULT, nullptr, mesh.totvert);
+ }
+ if (use_orig_index_edges) {
+ CustomData_add_layer(&mesh.edata, CD_ORIGINDEX, CD_DEFAULT, nullptr, mesh.totedge);
+ }
+ if (use_orig_index_polys) {
+ CustomData_add_layer(&mesh.pdata, CD_ORIGINDEX, CD_DEFAULT, nullptr, mesh.totpoly);
+ }
+ }
}
static Mesh *modifyMesh(ModifierData *md, const ModifierEvalContext *ctx, Mesh *mesh)
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