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Geometry Nodes: new Realize Instances node 

This node has a simple geometry input and output.
If the input geometry contains instances, they will be realized
into actual geometry. When there are many instances, this can
be very slow and memory intensive. Generally, instances should
only be made real when necessary, e.g. when every instance
should be deformed independently.

Differential Revision: https://developer.blender.org/D12556
This commit is contained in:
Jacques Lucke 2021-09-20 12:37:52 +02:00
parent 029d042e85
commit 7da9da2b27
7 changed files with 54 additions and 0 deletions
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1
release/scripts/startup/nodeitems_builtins.py
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@ -546,6 +546,7 @@ geometry_node_categories = [
NodeItem("GeometryNodeJoinGeometry"),
NodeItem("GeometryNodeSeparateComponents"),
NodeItem("GeometryNodeSetPosition", poll=geometry_nodes_fields_poll),
NodeItem("GeometryNodeRealizeInstances", poll=geometry_nodes_fields_poll),
]),
GeometryNodeCategory("GEO_INPUT", "Input", items=[
NodeItem("GeometryNodeObjectInfo"),

1
source/blender/blenkernel/BKE_node.h
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@ -1493,6 +1493,7 @@ int ntreeTexExecTree(struct bNodeTree *ntree,
#define GEO_NODE_ATTRIBUTE_CAPTURE 1080
#define GEO_NODE_MATERIAL_SELECTION 1081
#define GEO_NODE_MATERIAL_ASSIGN 1082
#define GEO_NODE_REALIZE_INSTANCES 1083
/** \} */

1
source/blender/blenkernel/intern/node.cc
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@ -5229,6 +5229,7 @@ static void registerGeometryNodes()
register_node_type_geo_point_translate();
register_node_type_geo_points_to_volume();
register_node_type_geo_raycast();
register_node_type_geo_realize_instances();
register_node_type_geo_sample_texture();
register_node_type_geo_select_by_handle_type();
register_node_type_geo_material_selection();

1
source/blender/nodes/CMakeLists.txt
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@ -218,6 +218,7 @@ set(SRC
geometry/nodes/node_geo_point_translate.cc
geometry/nodes/node_geo_points_to_volume.cc
geometry/nodes/node_geo_raycast.cc
geometry/nodes/node_geo_realize_instances.cc
geometry/nodes/node_geo_separate_components.cc
geometry/nodes/node_geo_set_position.cc
geometry/nodes/node_geo_subdivision_surface.cc

1
source/blender/nodes/NOD_geometry.h
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@ -103,6 +103,7 @@ void register_node_type_geo_point_separate(void);
void register_node_type_geo_point_translate(void);
void register_node_type_geo_points_to_volume(void);
void register_node_type_geo_raycast(void);
void register_node_type_geo_realize_instances(void);
void register_node_type_geo_sample_texture(void);
void register_node_type_geo_select_by_handle_type(void);
void register_node_type_geo_separate_components(void);

1
source/blender/nodes/NOD_static_types.h
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@ -345,6 +345,7 @@ DefNode(GeometryNode, GEO_NODE_MESH_PRIMITIVE_LINE, def_geo_mesh_line, "MESH_PRI
DefNode(GeometryNode, GEO_NODE_MESH_PRIMITIVE_UV_SPHERE, 0, "MESH_PRIMITIVE_UV_SPHERE", MeshUVSphere, "UV Sphere", "")
DefNode(GeometryNode, GEO_NODE_MESH_SUBDIVIDE, 0, "MESH_SUBDIVIDE", MeshSubdivide, "Mesh Subdivide", "")
DefNode(GeometryNode, GEO_NODE_OBJECT_INFO, def_geo_object_info, "OBJECT_INFO", ObjectInfo, "Object Info", "")
DefNode(GeometryNode, GEO_NODE_REALIZE_INSTANCES, 0, "REALIZE_INSTANCES", RealizeInstances, "Realize Instances", "")
DefNode(GeometryNode, GEO_NODE_SEPARATE_COMPONENTS, 0, "SEPARATE_COMPONENTS", SeparateComponents, "Separate Components", "")
DefNode(GeometryNode, GEO_NODE_SET_POSITION, 0, "SET_POSITION", SetPosition, "Set Position", "")
DefNode(GeometryNode, GEO_NODE_SUBDIVISION_SURFACE, def_geo_subdivision_surface, "SUBDIVISION_SURFACE", SubdivisionSurface, "Subdivision Surface", "")

48
source/blender/nodes/geometry/nodes/node_geo_realize_instances.cc Normal file
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@ -0,0 +1,48 @@
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "node_geometry_util.hh"
#include "UI_interface.h"
#include "UI_resources.h"
namespace blender::nodes {
static void geo_node_realize_instances_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>("Geometry");
b.add_output<decl::Geometry>("Geometry");
}
static void geo_node_realize_instances_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
geometry_set = bke::geometry_set_realize_instances(geometry_set);
params.set_output("Geometry", std::move(geometry_set));
}
} // namespace blender::nodes
void register_node_type_geo_realize_instances()
{
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_REALIZE_INSTANCES, "Realize Instances", NODE_CLASS_GEOMETRY, 0);
ntype.declare = blender::nodes::geo_node_realize_instances_declare;
ntype.geometry_node_execute = blender::nodes::geo_node_realize_instances_exec;
nodeRegisterType(&ntype);
}