[Bf-blender-cvs] [24a965bb16c] master: Fix T91767: crash when instancing geometry coming from modifier
Jacques Lucke
noreply at git.blender.org
Wed Sep 29 10:55:56 CEST 2021
Commit: 24a965bb16c22e33752dfb6c22105b96a8649aeb
Author: Jacques Lucke
Date: Wed Sep 29 10:55:32 2021 +0200
Branches: master
https://developer.blender.org/rB24a965bb16c22e33752dfb6c22105b96a8649aeb
Fix T91767: crash when instancing geometry coming from modifier
The issue was that the `GeometrySet` that comes from the modifier does
not have full ownership of the mesh for legacy reasons to avoid copies.
Calling `ensure_owns_direct_data` makes sure that the geometry set
actually owns the geometry so that it can be instanced.
===================================================================
M source/blender/nodes/geometry/nodes/node_geo_instance_on_points.cc
===================================================================
diff --git a/source/blender/nodes/geometry/nodes/node_geo_instance_on_points.cc b/source/blender/nodes/geometry/nodes/node_geo_instance_on_points.cc
index 490535224c8..8c0c0763be8 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_instance_on_points.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_instance_on_points.cc
@@ -57,10 +57,9 @@ static void geo_node_instance_on_points_declare(NodeDeclarationBuilder &b)
static void add_instances_from_component(InstancesComponent &dst_component,
const GeometryComponent &src_component,
+ const GeometrySet &instance,
const GeoNodeExecParams ¶ms)
{
- GeometrySet instance = params.get_input<GeometrySet>("Instance");
-
const AttributeDomain domain = ATTR_DOMAIN_POINT;
const int domain_size = src_component.attribute_domain_size(domain);
@@ -163,23 +162,27 @@ static void add_instances_from_component(InstancesComponent &dst_component,
static void geo_node_instance_on_points_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Points");
+ GeometrySet instance = params.get_input<GeometrySet>("Instance");
+ instance.ensure_owns_direct_data();
geometry_set.modify_geometry_sets([&](GeometrySet &geometry_set) {
InstancesComponent &instances = geometry_set.get_component_for_write<InstancesComponent>();
if (geometry_set.has<MeshComponent>()) {
add_instances_from_component(
- instances, *geometry_set.get_component_for_read<MeshComponent>(), params);
+ instances, *geometry_set.get_component_for_read<MeshComponent>(), instance, params);
geometry_set.remove(GEO_COMPONENT_TYPE_MESH);
}
if (geometry_set.has<PointCloudComponent>()) {
- add_instances_from_component(
- instances, *geometry_set.get_component_for_read<PointCloudComponent>(), params);
+ add_instances_from_component(instances,
+ *geometry_set.get_component_for_read<PointCloudComponent>(),
+ instance,
+ params);
geometry_set.remove(GEO_COMPONENT_TYPE_POINT_CLOUD);
}
if (geometry_set.has<CurveComponent>()) {
add_instances_from_component(
- instances, *geometry_set.get_component_for_read<CurveComponent>(), params);
+ instances, *geometry_set.get_component_for_read<CurveComponent>(), instance, params);
geometry_set.remove(GEO_COMPONENT_TYPE_CURVE);
}
/* Unused references may have been added above. Remove those now so that other nodes don't
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