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|
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "GEO_realize_instances.hh"
#include "DNA_collection_types.h"
#include "DNA_layer_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_pointcloud_types.h"
#include "BLI_noise.hh"
#include "BLI_task.hh"
#include "BKE_collection.h"
#include "BKE_curves.hh"
#include "BKE_geometry_set_instances.hh"
#include "BKE_material.h"
#include "BKE_mesh.h"
#include "BKE_pointcloud.h"
#include "BKE_type_conversions.hh"
namespace blender::geometry {
using blender::bke::AttributeIDRef;
using blender::bke::custom_data_type_to_cpp_type;
using blender::bke::CustomDataAttributes;
using blender::bke::object_get_evaluated_geometry_set;
using blender::bke::OutputAttribute;
using blender::bke::OutputAttribute_Typed;
using blender::bke::ReadAttributeLookup;
/**
* An ordered set of attribute ids. Attributes are ordered to avoid name lookups in many places.
* Once the attributes are ordered, they can just be referred to by index.
*/
struct OrderedAttributes {
VectorSet<AttributeIDRef> ids;
Vector<AttributeKind> kinds;
int size() const
{
return this->kinds.size();
}
IndexRange index_range() const
{
return this->kinds.index_range();
}
};
struct AttributeFallbacksArray {
/**
* Instance attribute values used as fallback when the geometry does not have the
* corresponding attributes itself. The pointers point to attributes stored in the instances
* component or in #r_temporary_arrays. The order depends on the corresponding #OrderedAttributes
* instance.
*/
Array<const void *> array;
AttributeFallbacksArray(int size) : array(size, nullptr)
{
}
};
struct PointCloudRealizeInfo {
const PointCloud *pointcloud = nullptr;
/** Matches the order stored in #AllPointCloudsInfo.attributes. */
Array<std::optional<GVArray_GSpan>> attributes;
/** Id attribute on the point cloud. If there are no ids, this #Span is empty. */
Span<int> stored_ids;
};
struct RealizePointCloudTask {
/** Starting index in the final realized point cloud. */
int start_index;
/** Preprocessed information about the point cloud. */
const PointCloudRealizeInfo *pointcloud_info;
/** Transformation that is applied to all positions. */
float4x4 transform;
AttributeFallbacksArray attribute_fallbacks;
/** Only used when the output contains an output attribute. */
uint32_t id = 0;
};
/** Start indices in the final output mesh. */
struct MeshElementStartIndices {
int vertex = 0;
int edge = 0;
int poly = 0;
int loop = 0;
};
struct MeshRealizeInfo {
const Mesh *mesh = nullptr;
/** Maps old material indices to new material indices. */
Array<int> material_index_map;
/** Matches the order in #AllMeshesInfo.attributes. */
Array<std::optional<GVArray_GSpan>> attributes;
/** Vertex ids stored on the mesh. If there are no ids, this #Span is empty. */
Span<int> stored_vertex_ids;
};
struct RealizeMeshTask {
MeshElementStartIndices start_indices;
const MeshRealizeInfo *mesh_info;
/** Transformation that is applied to all positions. */
float4x4 transform;
AttributeFallbacksArray attribute_fallbacks;
/** Only used when the output contains an output attribute. */
uint32_t id = 0;
};
struct RealizeCurveInfo {
const Curves *curves;
/**
* Matches the order in #AllCurvesInfo.attributes.
*/
Array<std::optional<GVArray_GSpan>> attributes;
/** ID attribute on the curves. If there are no ids, this #Span is empty. */
Span<int> stored_ids;
/**
* Handle position attributes must be transformed along with positions. Accessing them in
* advance isn't necessary theoretically, but is done to simplify other code and to avoid
* some overhead.
*/
Span<float3> handle_left;
Span<float3> handle_right;
/**
* The radius attribute must be filled with a default of 1.0 if it
* doesn't exist on some (but not all) of the input curves data-blocks.
*/
Span<float> radius;
};
/** Start indices in the final output curves data-block. */
struct CurvesElementStartIndices {
int point = 0;
int curve = 0;
};
struct RealizeCurveTask {
CurvesElementStartIndices start_indices;
const RealizeCurveInfo *curve_info;
/* Transformation applied to the position of control points and handles. */
float4x4 transform;
AttributeFallbacksArray attribute_fallbacks;
/** Only used when the output contains an output attribute. */
uint32_t id = 0;
};
struct AllPointCloudsInfo {
/** Ordering of all attributes that are propagated to the output point cloud generically. */
OrderedAttributes attributes;
/** Ordering of the original point clouds that are joined. */
VectorSet<const PointCloud *> order;
/** Preprocessed data about every original point cloud. This is ordered by #order. */
Array<PointCloudRealizeInfo> realize_info;
bool create_id_attribute = false;
};
struct AllMeshesInfo {
/** Ordering of all attributes that are propagated to the output mesh generically. */
OrderedAttributes attributes;
/** Ordering of the original meshes that are joined. */
VectorSet<const Mesh *> order;
/** Preprocessed data about every original mesh. This is ordered by #order. */
Array<MeshRealizeInfo> realize_info;
/** Ordered materials on the output mesh. */
VectorSet<Material *> materials;
bool create_id_attribute = false;
};
struct AllCurvesInfo {
/** Ordering of all attributes that are propagated to the output curve generically. */
OrderedAttributes attributes;
/** Ordering of the original curves that are joined. */
VectorSet<const Curves *> order;
/** Preprocessed data about every original curve. This is ordered by #order. */
Array<RealizeCurveInfo> realize_info;
bool create_id_attribute = false;
bool create_handle_postion_attributes = false;
bool create_radius_attribute = false;
};
/** Collects all tasks that need to be executed to realize all instances. */
struct GatherTasks {
Vector<RealizePointCloudTask> pointcloud_tasks;
Vector<RealizeMeshTask> mesh_tasks;
Vector<RealizeCurveTask> curve_tasks;
/* Volumes only have very simple support currently. Only the first found volume is put into the
* output. */
UserCounter<VolumeComponent> first_volume;
};
/** Current offsets while during the gather operation. */
struct GatherOffsets {
int pointcloud_offset = 0;
MeshElementStartIndices mesh_offsets;
CurvesElementStartIndices curves_offsets;
};
struct GatherTasksInfo {
/** Static information about all geometries that are joined. */
const AllPointCloudsInfo &pointclouds;
const AllMeshesInfo &meshes;
const AllCurvesInfo &curves;
bool create_id_attribute_on_any_component = false;
/**
* Under some circumstances, temporary arrays need to be allocated during the gather operation.
* For example, when an instance attribute has to be realized as a different data type. This
* array owns all the temporary arrays so that they can live until all processing is done.
* Use #std::unique_ptr to avoid depending on whether #GArray has an inline buffer or not.
*/
Vector<std::unique_ptr<GArray<>>> &r_temporary_arrays;
/** All gathered tasks. */
GatherTasks r_tasks;
/** Current offsets while gathering tasks. */
GatherOffsets r_offsets;
};
/**
* Information about the parent instances in the current context.
*/
struct InstanceContext {
/** Ordered by #AllPointCloudsInfo.attributes. */
AttributeFallbacksArray pointclouds;
/** Ordered by #AllMeshesInfo.attributes. */
AttributeFallbacksArray meshes;
/** Ordered by #AllCurvesInfo.attributes. */
AttributeFallbacksArray curves;
/** Id mixed from all parent instances. */
uint32_t id = 0;
InstanceContext(const GatherTasksInfo &gather_info)
: pointclouds(gather_info.pointclouds.attributes.size()),
meshes(gather_info.meshes.attributes.size()),
curves(gather_info.curves.attributes.size())
{
}
};
static void copy_transformed_positions(const Span<float3> src,
const float4x4 &transform,
MutableSpan<float3> dst)
{
threading::parallel_for(src.index_range(), 1024, [&](const IndexRange range) {
for (const int i : range) {
dst[i] = transform * src[i];
}
});
}
static void threaded_copy(const GSpan src, GMutableSpan dst)
{
BLI_assert(src.size() == dst.size());
BLI_assert(src.type() == dst.type());
threading::parallel_for(IndexRange(src.size()), 1024, [&](const IndexRange range) {
src.type().copy_construct_n(src.slice(range).data(), dst.slice(range).data(), range.size());
});
}
static void threaded_fill(const GPointer value, GMutableSpan dst)
{
BLI_assert(*value.type() == dst.type());
threading::parallel_for(IndexRange(dst.size()), 1024, [&](const IndexRange range) {
value.type()->fill_construct_n(value.get(), dst.slice(range).data(), range.size());
});
}
static void copy_generic_attributes_to_result(
const Span<std::optional<GVArray_GSpan>> src_attributes,
const AttributeFallbacksArray &attribute_fallbacks,
const OrderedAttributes &ordered_attributes,
const FunctionRef<IndexRange(AttributeDomain)> &range_fn,
MutableSpan<GMutableSpan> dst_attributes)
{
threading::parallel_for(dst_attributes.index_range(), 10, [&](const IndexRange attribute_range) {
for (const int attribute_index : attribute_range) {
const AttributeDomain domain = ordered_attributes.kinds[attribute_index].domain;
const IndexRange element_slice = range_fn(domain);
GMutableSpan dst_span = dst_attributes[attribute_index].slice(element_slice);
if (src_attributes[attribute_index].has_value()) {
threaded_copy(*src_attributes[attribute_index], dst_span);
}
else {
const CPPType &cpp_type = dst_span.type();
const void *fallback = attribute_fallbacks.array[attribute_index] == nullptr ?
cpp_type.default_value() :
attribute_fallbacks.array[attribute_index];
threaded_fill({cpp_type, fallback}, dst_span);
}
}
});
}
static void create_result_ids(const RealizeInstancesOptions &options,
Span<int> stored_ids,
const int task_id,
MutableSpan<int> dst_ids)
{
if (options.keep_original_ids) {
if (stored_ids.is_empty()) {
dst_ids.fill(0);
}
else {
dst_ids.copy_from(stored_ids);
}
}
else {
if (stored_ids.is_empty()) {
threading::parallel_for(dst_ids.index_range(), 1024, [&](const IndexRange range) {
for (const int i : range) {
dst_ids[i] = noise::hash(task_id, i);
}
});
}
else {
threading::parallel_for(dst_ids.index_range(), 1024, [&](const IndexRange range) {
for (const int i : range) {
dst_ids[i] = noise::hash(task_id, stored_ids[i]);
}
});
}
}
}
/* -------------------------------------------------------------------- */
/** \name Gather Realize Tasks
* \{ */
/* Forward declaration. */
static void gather_realize_tasks_recursive(GatherTasksInfo &gather_info,
const GeometrySet &geometry_set,
const float4x4 &base_transform,
const InstanceContext &base_instance_context);
/**
* Checks which of the #ordered_attributes exist on the #instances_component. For each attribute
* that exists on the instances, a pair is returned that contains the attribute index and the
* corresponding attribute data.
*/
static Vector<std::pair<int, GSpan>> prepare_attribute_fallbacks(
GatherTasksInfo &gather_info,
const InstancesComponent &instances_component,
const OrderedAttributes &ordered_attributes)
{
Vector<std::pair<int, GSpan>> attributes_to_override;
const CustomDataAttributes &attributes = instances_component.attributes();
attributes.foreach_attribute(
[&](const AttributeIDRef &attribute_id, const AttributeMetaData &meta_data) {
const int attribute_index = ordered_attributes.ids.index_of_try(attribute_id);
if (attribute_index == -1) {
/* The attribute is not propagated to the final geometry. */
return true;
}
GSpan span = *attributes.get_for_read(attribute_id);
const CustomDataType expected_type = ordered_attributes.kinds[attribute_index].data_type;
if (meta_data.data_type != expected_type) {
const CPPType &from_type = span.type();
const CPPType &to_type = *custom_data_type_to_cpp_type(expected_type);
const bke::DataTypeConversions &conversions = bke::get_implicit_type_conversions();
if (!conversions.is_convertible(from_type, to_type)) {
/* Ignore the attribute because it can not be converted to the desired type. */
return true;
}
/* Convert the attribute on the instances component to the expected attribute type. */
std::unique_ptr<GArray<>> temporary_array = std::make_unique<GArray<>>(
to_type, instances_component.instances_amount());
conversions.convert_to_initialized_n(span, temporary_array->as_mutable_span());
span = temporary_array->as_span();
gather_info.r_temporary_arrays.append(std::move(temporary_array));
}
attributes_to_override.append({attribute_index, span});
return true;
},
ATTR_DOMAIN_INSTANCE);
return attributes_to_override;
}
/**
* Calls #fn for every geometry in the given #InstanceReference. Also passes on the transformation
* that is applied to every instance.
*/
static void foreach_geometry_in_reference(
const InstanceReference &reference,
const float4x4 &base_transform,
const uint32_t id,
FunctionRef<void(const GeometrySet &geometry_set, const float4x4 &transform, uint32_t id)> fn)
{
switch (reference.type()) {
case InstanceReference::Type::Object: {
const Object &object = reference.object();
const GeometrySet object_geometry_set = object_get_evaluated_geometry_set(object);
fn(object_geometry_set, base_transform, id);
break;
}
case InstanceReference::Type::Collection: {
Collection &collection = reference.collection();
float4x4 offset_matrix = float4x4::identity();
sub_v3_v3(offset_matrix.values[3], collection.instance_offset);
int index = 0;
FOREACH_COLLECTION_OBJECT_RECURSIVE_BEGIN (&collection, object) {
const GeometrySet object_geometry_set = object_get_evaluated_geometry_set(*object);
const float4x4 matrix = base_transform * offset_matrix * object->obmat;
const int sub_id = noise::hash(id, index);
fn(object_geometry_set, matrix, sub_id);
index++;
}
FOREACH_COLLECTION_OBJECT_RECURSIVE_END;
break;
}
case InstanceReference::Type::GeometrySet: {
const GeometrySet &instance_geometry_set = reference.geometry_set();
fn(instance_geometry_set, base_transform, id);
break;
}
case InstanceReference::Type::None: {
break;
}
}
}
static void gather_realize_tasks_for_instances(GatherTasksInfo &gather_info,
const InstancesComponent &instances_component,
const float4x4 &base_transform,
const InstanceContext &base_instance_context)
{
const Span<InstanceReference> references = instances_component.references();
const Span<int> handles = instances_component.instance_reference_handles();
const Span<float4x4> transforms = instances_component.instance_transforms();
Span<int> stored_instance_ids;
if (gather_info.create_id_attribute_on_any_component) {
std::optional<GSpan> ids = instances_component.attributes().get_for_read("id");
if (ids.has_value()) {
stored_instance_ids = ids->typed<int>();
}
}
/* Prepare attribute fallbacks. */
InstanceContext instance_context = base_instance_context;
Vector<std::pair<int, GSpan>> pointcloud_attributes_to_override = prepare_attribute_fallbacks(
gather_info, instances_component, gather_info.pointclouds.attributes);
Vector<std::pair<int, GSpan>> mesh_attributes_to_override = prepare_attribute_fallbacks(
gather_info, instances_component, gather_info.meshes.attributes);
Vector<std::pair<int, GSpan>> curve_attributes_to_override = prepare_attribute_fallbacks(
gather_info, instances_component, gather_info.curves.attributes);
for (const int i : transforms.index_range()) {
const int handle = handles[i];
const float4x4 &transform = transforms[i];
const InstanceReference &reference = references[handle];
const float4x4 new_base_transform = base_transform * transform;
/* Update attribute fallbacks for the current instance. */
for (const std::pair<int, GSpan> &pair : pointcloud_attributes_to_override) {
instance_context.pointclouds.array[pair.first] = pair.second[i];
}
for (const std::pair<int, GSpan> &pair : mesh_attributes_to_override) {
instance_context.meshes.array[pair.first] = pair.second[i];
}
for (const std::pair<int, GSpan> &pair : curve_attributes_to_override) {
instance_context.curves.array[pair.first] = pair.second[i];
}
uint32_t local_instance_id = 0;
if (gather_info.create_id_attribute_on_any_component) {
if (stored_instance_ids.is_empty()) {
local_instance_id = (uint32_t)i;
}
else {
local_instance_id = (uint32_t)stored_instance_ids[i];
}
}
const uint32_t instance_id = noise::hash(base_instance_context.id, local_instance_id);
/* Add realize tasks for all referenced geometry sets recursively. */
foreach_geometry_in_reference(reference,
new_base_transform,
instance_id,
[&](const GeometrySet &instance_geometry_set,
const float4x4 &transform,
const uint32_t id) {
instance_context.id = id;
gather_realize_tasks_recursive(gather_info,
instance_geometry_set,
transform,
instance_context);
});
}
}
/**
* Gather tasks for all geometries in the #geometry_set.
*/
static void gather_realize_tasks_recursive(GatherTasksInfo &gather_info,
const GeometrySet &geometry_set,
const float4x4 &base_transform,
const InstanceContext &base_instance_context)
{
for (const GeometryComponent *component : geometry_set.get_components_for_read()) {
const GeometryComponentType type = component->type();
switch (type) {
case GEO_COMPONENT_TYPE_MESH: {
const MeshComponent &mesh_component = *static_cast<const MeshComponent *>(component);
const Mesh *mesh = mesh_component.get_for_read();
if (mesh != nullptr && mesh->totvert > 0) {
const int mesh_index = gather_info.meshes.order.index_of(mesh);
const MeshRealizeInfo &mesh_info = gather_info.meshes.realize_info[mesh_index];
gather_info.r_tasks.mesh_tasks.append({gather_info.r_offsets.mesh_offsets,
&mesh_info,
base_transform,
base_instance_context.meshes,
base_instance_context.id});
gather_info.r_offsets.mesh_offsets.vertex += mesh->totvert;
gather_info.r_offsets.mesh_offsets.edge += mesh->totedge;
gather_info.r_offsets.mesh_offsets.loop += mesh->totloop;
gather_info.r_offsets.mesh_offsets.poly += mesh->totpoly;
}
break;
}
case GEO_COMPONENT_TYPE_POINT_CLOUD: {
const PointCloudComponent &pointcloud_component =
*static_cast<const PointCloudComponent *>(component);
const PointCloud *pointcloud = pointcloud_component.get_for_read();
if (pointcloud != nullptr && pointcloud->totpoint > 0) {
const int pointcloud_index = gather_info.pointclouds.order.index_of(pointcloud);
const PointCloudRealizeInfo &pointcloud_info =
gather_info.pointclouds.realize_info[pointcloud_index];
gather_info.r_tasks.pointcloud_tasks.append({gather_info.r_offsets.pointcloud_offset,
&pointcloud_info,
base_transform,
base_instance_context.pointclouds,
base_instance_context.id});
gather_info.r_offsets.pointcloud_offset += pointcloud->totpoint;
}
break;
}
case GEO_COMPONENT_TYPE_CURVE: {
const CurveComponent &curve_component = *static_cast<const CurveComponent *>(component);
const Curves *curves = curve_component.get_for_read();
if (curves != nullptr && curves->geometry.curve_num > 0) {
const int curve_index = gather_info.curves.order.index_of(curves);
const RealizeCurveInfo &curve_info = gather_info.curves.realize_info[curve_index];
gather_info.r_tasks.curve_tasks.append({gather_info.r_offsets.curves_offsets,
&curve_info,
base_transform,
base_instance_context.curves,
base_instance_context.id});
gather_info.r_offsets.curves_offsets.point += curves->geometry.point_num;
gather_info.r_offsets.curves_offsets.curve += curves->geometry.curve_num;
}
break;
}
case GEO_COMPONENT_TYPE_INSTANCES: {
const InstancesComponent &instances_component = *static_cast<const InstancesComponent *>(
component);
gather_realize_tasks_for_instances(
gather_info, instances_component, base_transform, base_instance_context);
break;
}
case GEO_COMPONENT_TYPE_VOLUME: {
const VolumeComponent *volume_component = static_cast<const VolumeComponent *>(component);
if (!gather_info.r_tasks.first_volume) {
volume_component->user_add();
gather_info.r_tasks.first_volume = const_cast<VolumeComponent *>(volume_component);
}
break;
}
}
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Point Cloud
* \{ */
static OrderedAttributes gather_generic_pointcloud_attributes_to_propagate(
const GeometrySet &in_geometry_set, const RealizeInstancesOptions &options, bool &r_create_id)
{
Vector<GeometryComponentType> src_component_types;
src_component_types.append(GEO_COMPONENT_TYPE_POINT_CLOUD);
if (options.realize_instance_attributes) {
src_component_types.append(GEO_COMPONENT_TYPE_INSTANCES);
}
Map<AttributeIDRef, AttributeKind> attributes_to_propagate;
in_geometry_set.gather_attributes_for_propagation(
src_component_types, GEO_COMPONENT_TYPE_POINT_CLOUD, true, attributes_to_propagate);
attributes_to_propagate.remove("position");
r_create_id = attributes_to_propagate.pop_try("id").has_value();
OrderedAttributes ordered_attributes;
for (const auto item : attributes_to_propagate.items()) {
ordered_attributes.ids.add_new(item.key);
ordered_attributes.kinds.append(item.value);
}
return ordered_attributes;
}
static void gather_pointclouds_to_realize(const GeometrySet &geometry_set,
VectorSet<const PointCloud *> &r_pointclouds)
{
if (const PointCloud *pointcloud = geometry_set.get_pointcloud_for_read()) {
if (pointcloud->totpoint > 0) {
r_pointclouds.add(pointcloud);
}
}
if (const InstancesComponent *instances =
geometry_set.get_component_for_read<InstancesComponent>()) {
instances->foreach_referenced_geometry([&](const GeometrySet &instance_geometry_set) {
gather_pointclouds_to_realize(instance_geometry_set, r_pointclouds);
});
}
}
static AllPointCloudsInfo preprocess_pointclouds(const GeometrySet &geometry_set,
const RealizeInstancesOptions &options)
{
AllPointCloudsInfo info;
info.attributes = gather_generic_pointcloud_attributes_to_propagate(
geometry_set, options, info.create_id_attribute);
gather_pointclouds_to_realize(geometry_set, info.order);
info.realize_info.reinitialize(info.order.size());
for (const int pointcloud_index : info.realize_info.index_range()) {
PointCloudRealizeInfo &pointcloud_info = info.realize_info[pointcloud_index];
const PointCloud *pointcloud = info.order[pointcloud_index];
pointcloud_info.pointcloud = pointcloud;
/* Access attributes. */
PointCloudComponent component;
component.replace(const_cast<PointCloud *>(pointcloud), GeometryOwnershipType::ReadOnly);
pointcloud_info.attributes.reinitialize(info.attributes.size());
for (const int attribute_index : info.attributes.index_range()) {
const AttributeIDRef &attribute_id = info.attributes.ids[attribute_index];
const CustomDataType data_type = info.attributes.kinds[attribute_index].data_type;
const AttributeDomain domain = info.attributes.kinds[attribute_index].domain;
if (component.attribute_exists(attribute_id)) {
GVArray attribute = component.attribute_get_for_read(attribute_id, domain, data_type);
pointcloud_info.attributes[attribute_index].emplace(std::move(attribute));
}
}
if (info.create_id_attribute) {
ReadAttributeLookup ids_lookup = component.attribute_try_get_for_read("id");
if (ids_lookup) {
pointcloud_info.stored_ids = ids_lookup.varray.get_internal_span().typed<int>();
}
}
}
return info;
}
static void execute_realize_pointcloud_task(const RealizeInstancesOptions &options,
const RealizePointCloudTask &task,
const OrderedAttributes &ordered_attributes,
PointCloud &dst_pointcloud,
MutableSpan<GMutableSpan> dst_attribute_spans,
MutableSpan<int> all_dst_ids)
{
const PointCloudRealizeInfo &pointcloud_info = *task.pointcloud_info;
const PointCloud &pointcloud = *pointcloud_info.pointcloud;
const Span<float3> src_positions{(float3 *)pointcloud.co, pointcloud.totpoint};
const IndexRange point_slice{task.start_index, pointcloud.totpoint};
MutableSpan<float3> dst_positions{(float3 *)dst_pointcloud.co + task.start_index,
pointcloud.totpoint};
copy_transformed_positions(src_positions, task.transform, dst_positions);
/* Create point ids. */
if (!all_dst_ids.is_empty()) {
create_result_ids(
options, pointcloud_info.stored_ids, task.id, all_dst_ids.slice(point_slice));
}
copy_generic_attributes_to_result(
pointcloud_info.attributes,
task.attribute_fallbacks,
ordered_attributes,
[&](const AttributeDomain domain) {
BLI_assert(domain == ATTR_DOMAIN_POINT);
UNUSED_VARS_NDEBUG(domain);
return point_slice;
},
dst_attribute_spans);
}
static void execute_realize_pointcloud_tasks(const RealizeInstancesOptions &options,
const AllPointCloudsInfo &all_pointclouds_info,
const Span<RealizePointCloudTask> tasks,
const OrderedAttributes &ordered_attributes,
GeometrySet &r_realized_geometry)
{
if (tasks.is_empty()) {
return;
}
const RealizePointCloudTask &last_task = tasks.last();
const PointCloud &last_pointcloud = *last_task.pointcloud_info->pointcloud;
const int tot_points = last_task.start_index + last_pointcloud.totpoint;
/* Allocate new point cloud. */
PointCloud *dst_pointcloud = BKE_pointcloud_new_nomain(tot_points);
PointCloudComponent &dst_component =
r_realized_geometry.get_component_for_write<PointCloudComponent>();
dst_component.replace(dst_pointcloud);
/* Prepare id attribute. */
OutputAttribute_Typed<int> point_ids;
MutableSpan<int> point_ids_span;
if (all_pointclouds_info.create_id_attribute) {
point_ids = dst_component.attribute_try_get_for_output_only<int>("id", ATTR_DOMAIN_POINT);
point_ids_span = point_ids.as_span();
}
/* Prepare generic output attributes. */
Vector<OutputAttribute> dst_attributes;
Vector<GMutableSpan> dst_attribute_spans;
for (const int attribute_index : ordered_attributes.index_range()) {
const AttributeIDRef &attribute_id = ordered_attributes.ids[attribute_index];
const CustomDataType data_type = ordered_attributes.kinds[attribute_index].data_type;
OutputAttribute dst_attribute = dst_component.attribute_try_get_for_output_only(
attribute_id, ATTR_DOMAIN_POINT, data_type);
dst_attribute_spans.append(dst_attribute.as_span());
dst_attributes.append(std::move(dst_attribute));
}
/* Actually execute all tasks. */
threading::parallel_for(tasks.index_range(), 100, [&](const IndexRange task_range) {
for (const int task_index : task_range) {
const RealizePointCloudTask &task = tasks[task_index];
execute_realize_pointcloud_task(
options, task, ordered_attributes, *dst_pointcloud, dst_attribute_spans, point_ids_span);
}
});
/* Save modified attributes. */
for (OutputAttribute &dst_attribute : dst_attributes) {
dst_attribute.save();
}
if (point_ids) {
point_ids.save();
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Mesh
* \{ */
static OrderedAttributes gather_generic_mesh_attributes_to_propagate(
const GeometrySet &in_geometry_set, const RealizeInstancesOptions &options, bool &r_create_id)
{
Vector<GeometryComponentType> src_component_types;
src_component_types.append(GEO_COMPONENT_TYPE_MESH);
if (options.realize_instance_attributes) {
src_component_types.append(GEO_COMPONENT_TYPE_INSTANCES);
}
Map<AttributeIDRef, AttributeKind> attributes_to_propagate;
in_geometry_set.gather_attributes_for_propagation(
src_component_types, GEO_COMPONENT_TYPE_MESH, true, attributes_to_propagate);
attributes_to_propagate.remove("position");
attributes_to_propagate.remove("normal");
attributes_to_propagate.remove("material_index");
attributes_to_propagate.remove("shade_smooth");
attributes_to_propagate.remove("crease");
r_create_id = attributes_to_propagate.pop_try("id").has_value();
OrderedAttributes ordered_attributes;
for (const auto item : attributes_to_propagate.items()) {
ordered_attributes.ids.add_new(item.key);
ordered_attributes.kinds.append(item.value);
}
return ordered_attributes;
}
static void gather_meshes_to_realize(const GeometrySet &geometry_set,
VectorSet<const Mesh *> &r_meshes)
{
if (const Mesh *mesh = geometry_set.get_mesh_for_read()) {
if (mesh->totvert > 0) {
r_meshes.add(mesh);
}
}
if (const InstancesComponent *instances =
geometry_set.get_component_for_read<InstancesComponent>()) {
instances->foreach_referenced_geometry([&](const GeometrySet &instance_geometry_set) {
gather_meshes_to_realize(instance_geometry_set, r_meshes);
});
}
}
static AllMeshesInfo preprocess_meshes(const GeometrySet &geometry_set,
const RealizeInstancesOptions &options)
{
AllMeshesInfo info;
info.attributes = gather_generic_mesh_attributes_to_propagate(
geometry_set, options, info.create_id_attribute);
gather_meshes_to_realize(geometry_set, info.order);
for (const Mesh *mesh : info.order) {
for (const int slot_index : IndexRange(mesh->totcol)) {
Material *material = mesh->mat[slot_index];
info.materials.add(material);
}
}
info.realize_info.reinitialize(info.order.size());
for (const int mesh_index : info.realize_info.index_range()) {
MeshRealizeInfo &mesh_info = info.realize_info[mesh_index];
const Mesh *mesh = info.order[mesh_index];
mesh_info.mesh = mesh;
/* Create material index mapping. */
mesh_info.material_index_map.reinitialize(mesh->totcol);
for (const int old_slot_index : IndexRange(mesh->totcol)) {
Material *material = mesh->mat[old_slot_index];
const int new_slot_index = info.materials.index_of(material);
mesh_info.material_index_map[old_slot_index] = new_slot_index;
}
/* Access attributes. */
MeshComponent component;
component.replace(const_cast<Mesh *>(mesh), GeometryOwnershipType::ReadOnly);
mesh_info.attributes.reinitialize(info.attributes.size());
for (const int attribute_index : info.attributes.index_range()) {
const AttributeIDRef &attribute_id = info.attributes.ids[attribute_index];
const CustomDataType data_type = info.attributes.kinds[attribute_index].data_type;
const AttributeDomain domain = info.attributes.kinds[attribute_index].domain;
if (component.attribute_exists(attribute_id)) {
GVArray attribute = component.attribute_get_for_read(attribute_id, domain, data_type);
mesh_info.attributes[attribute_index].emplace(std::move(attribute));
}
}
if (info.create_id_attribute) {
ReadAttributeLookup ids_lookup = component.attribute_try_get_for_read("id");
if (ids_lookup) {
mesh_info.stored_vertex_ids = ids_lookup.varray.get_internal_span().typed<int>();
}
}
}
return info;
}
static void execute_realize_mesh_task(const RealizeInstancesOptions &options,
const RealizeMeshTask &task,
const OrderedAttributes &ordered_attributes,
Mesh &dst_mesh,
MutableSpan<GMutableSpan> dst_attribute_spans,
MutableSpan<int> all_dst_vertex_ids)
{
const MeshRealizeInfo &mesh_info = *task.mesh_info;
const Mesh &mesh = *mesh_info.mesh;
const Span<MVert> src_verts{mesh.mvert, mesh.totvert};
const Span<MEdge> src_edges{mesh.medge, mesh.totedge};
const Span<MLoop> src_loops{mesh.mloop, mesh.totloop};
const Span<MPoly> src_polys{mesh.mpoly, mesh.totpoly};
MutableSpan<MVert> dst_verts{dst_mesh.mvert + task.start_indices.vertex, mesh.totvert};
MutableSpan<MEdge> dst_edges{dst_mesh.medge + task.start_indices.edge, mesh.totedge};
MutableSpan<MLoop> dst_loops{dst_mesh.mloop + task.start_indices.loop, mesh.totloop};
MutableSpan<MPoly> dst_polys{dst_mesh.mpoly + task.start_indices.poly, mesh.totpoly};
const Span<int> material_index_map = mesh_info.material_index_map;
threading::parallel_for(IndexRange(mesh.totvert), 1024, [&](const IndexRange vert_range) {
for (const int i : vert_range) {
const MVert &src_vert = src_verts[i];
MVert &dst_vert = dst_verts[i];
dst_vert = src_vert;
copy_v3_v3(dst_vert.co, task.transform * float3(src_vert.co));
}
});
threading::parallel_for(IndexRange(mesh.totedge), 1024, [&](const IndexRange edge_range) {
for (const int i : edge_range) {
const MEdge &src_edge = src_edges[i];
MEdge &dst_edge = dst_edges[i];
dst_edge = src_edge;
dst_edge.v1 += task.start_indices.vertex;
dst_edge.v2 += task.start_indices.vertex;
}
});
threading::parallel_for(IndexRange(mesh.totloop), 1024, [&](const IndexRange loop_range) {
for (const int i : loop_range) {
const MLoop &src_loop = src_loops[i];
MLoop &dst_loop = dst_loops[i];
dst_loop = src_loop;
dst_loop.v += task.start_indices.vertex;
dst_loop.e += task.start_indices.edge;
}
});
threading::parallel_for(IndexRange(mesh.totpoly), 1024, [&](const IndexRange poly_range) {
for (const int i : poly_range) {
const MPoly &src_poly = src_polys[i];
MPoly &dst_poly = dst_polys[i];
dst_poly = src_poly;
dst_poly.loopstart += task.start_indices.loop;
if (src_poly.mat_nr >= 0 && src_poly.mat_nr < mesh.totcol) {
dst_poly.mat_nr = material_index_map[src_poly.mat_nr];
}
else {
/* The material index was invalid before. */
dst_poly.mat_nr = 0;
}
}
});
if (!all_dst_vertex_ids.is_empty()) {
create_result_ids(options,
mesh_info.stored_vertex_ids,
task.id,
all_dst_vertex_ids.slice(task.start_indices.vertex, mesh.totvert));
}
copy_generic_attributes_to_result(
mesh_info.attributes,
task.attribute_fallbacks,
ordered_attributes,
[&](const AttributeDomain domain) {
switch (domain) {
case ATTR_DOMAIN_POINT:
return IndexRange(task.start_indices.vertex, mesh.totvert);
case ATTR_DOMAIN_EDGE:
return IndexRange(task.start_indices.edge, mesh.totedge);
case ATTR_DOMAIN_CORNER:
return IndexRange(task.start_indices.loop, mesh.totloop);
case ATTR_DOMAIN_FACE:
return IndexRange(task.start_indices.poly, mesh.totpoly);
default:
BLI_assert_unreachable();
return IndexRange();
}
},
dst_attribute_spans);
}
static void execute_realize_mesh_tasks(const RealizeInstancesOptions &options,
const AllMeshesInfo &all_meshes_info,
const Span<RealizeMeshTask> tasks,
const OrderedAttributes &ordered_attributes,
const VectorSet<Material *> &ordered_materials,
GeometrySet &r_realized_geometry)
{
if (tasks.is_empty()) {
return;
}
const RealizeMeshTask &last_task = tasks.last();
const Mesh &last_mesh = *last_task.mesh_info->mesh;
const int tot_vertices = last_task.start_indices.vertex + last_mesh.totvert;
const int tot_edges = last_task.start_indices.edge + last_mesh.totedge;
const int tot_loops = last_task.start_indices.loop + last_mesh.totloop;
const int tot_poly = last_task.start_indices.poly + last_mesh.totpoly;
Mesh *dst_mesh = BKE_mesh_new_nomain(tot_vertices, tot_edges, 0, tot_loops, tot_poly);
MeshComponent &dst_component = r_realized_geometry.get_component_for_write<MeshComponent>();
dst_component.replace(dst_mesh);
/* Copy settings from the first input geometry set with a mesh. */
const RealizeMeshTask &first_task = tasks.first();
const Mesh &first_mesh = *first_task.mesh_info->mesh;
BKE_mesh_copy_parameters_for_eval(dst_mesh, &first_mesh);
/* Add materials. */
for (const int i : IndexRange(ordered_materials.size())) {
Material *material = ordered_materials[i];
BKE_id_material_eval_assign(&dst_mesh->id, i + 1, material);
}
/* Prepare id attribute. */
OutputAttribute_Typed<int> vertex_ids;
MutableSpan<int> vertex_ids_span;
if (all_meshes_info.create_id_attribute) {
vertex_ids = dst_component.attribute_try_get_for_output_only<int>("id", ATTR_DOMAIN_POINT);
vertex_ids_span = vertex_ids.as_span();
}
/* Prepare generic output attributes. */
Vector<OutputAttribute> dst_attributes;
Vector<GMutableSpan> dst_attribute_spans;
for (const int attribute_index : ordered_attributes.index_range()) {
const AttributeIDRef &attribute_id = ordered_attributes.ids[attribute_index];
const AttributeDomain domain = ordered_attributes.kinds[attribute_index].domain;
const CustomDataType data_type = ordered_attributes.kinds[attribute_index].data_type;
OutputAttribute dst_attribute = dst_component.attribute_try_get_for_output_only(
attribute_id, domain, data_type);
dst_attribute_spans.append(dst_attribute.as_span());
dst_attributes.append(std::move(dst_attribute));
}
/* Actually execute all tasks. */
threading::parallel_for(tasks.index_range(), 100, [&](const IndexRange task_range) {
for (const int task_index : task_range) {
const RealizeMeshTask &task = tasks[task_index];
execute_realize_mesh_task(
options, task, ordered_attributes, *dst_mesh, dst_attribute_spans, vertex_ids_span);
}
});
/* Save modified attributes. */
for (OutputAttribute &dst_attribute : dst_attributes) {
dst_attribute.save();
}
if (vertex_ids) {
vertex_ids.save();
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Curves
* \{ */
static OrderedAttributes gather_generic_curve_attributes_to_propagate(
const GeometrySet &in_geometry_set, const RealizeInstancesOptions &options, bool &r_create_id)
{
Vector<GeometryComponentType> src_component_types;
src_component_types.append(GEO_COMPONENT_TYPE_CURVE);
if (options.realize_instance_attributes) {
src_component_types.append(GEO_COMPONENT_TYPE_INSTANCES);
}
Map<AttributeIDRef, AttributeKind> attributes_to_propagate;
in_geometry_set.gather_attributes_for_propagation(
src_component_types, GEO_COMPONENT_TYPE_CURVE, true, attributes_to_propagate);
attributes_to_propagate.remove("position");
attributes_to_propagate.remove("radius");
attributes_to_propagate.remove("handle_right");
attributes_to_propagate.remove("handle_left");
r_create_id = attributes_to_propagate.pop_try("id").has_value();
OrderedAttributes ordered_attributes;
for (const auto item : attributes_to_propagate.items()) {
ordered_attributes.ids.add_new(item.key);
ordered_attributes.kinds.append(item.value);
}
return ordered_attributes;
}
static void gather_curves_to_realize(const GeometrySet &geometry_set,
VectorSet<const Curves *> &r_curves)
{
if (const Curves *curves = geometry_set.get_curves_for_read()) {
if (curves->geometry.curve_num != 0) {
r_curves.add(curves);
}
}
if (const InstancesComponent *instances =
geometry_set.get_component_for_read<InstancesComponent>()) {
instances->foreach_referenced_geometry([&](const GeometrySet &instance_geometry_set) {
gather_curves_to_realize(instance_geometry_set, r_curves);
});
}
}
static AllCurvesInfo preprocess_curves(const GeometrySet &geometry_set,
const RealizeInstancesOptions &options)
{
AllCurvesInfo info;
info.attributes = gather_generic_curve_attributes_to_propagate(
geometry_set, options, info.create_id_attribute);
gather_curves_to_realize(geometry_set, info.order);
info.realize_info.reinitialize(info.order.size());
for (const int curve_index : info.realize_info.index_range()) {
RealizeCurveInfo &curve_info = info.realize_info[curve_index];
const Curves *curves = info.order[curve_index];
curve_info.curves = curves;
/* Access attributes. */
CurveComponent component;
component.replace(const_cast<Curves *>(curves), GeometryOwnershipType::ReadOnly);
curve_info.attributes.reinitialize(info.attributes.size());
for (const int attribute_index : info.attributes.index_range()) {
const AttributeDomain domain = info.attributes.kinds[attribute_index].domain;
const AttributeIDRef &attribute_id = info.attributes.ids[attribute_index];
const CustomDataType data_type = info.attributes.kinds[attribute_index].data_type;
if (component.attribute_exists(attribute_id)) {
GVArray attribute = component.attribute_get_for_read(attribute_id, domain, data_type);
curve_info.attributes[attribute_index].emplace(std::move(attribute));
}
}
if (info.create_id_attribute) {
ReadAttributeLookup ids_lookup = component.attribute_try_get_for_read("id");
if (ids_lookup) {
curve_info.stored_ids = ids_lookup.varray.get_internal_span().typed<int>();
}
}
/* Retrieve the radius attribute, if it exists. */
if (component.attribute_exists("radius")) {
curve_info.radius = component
.attribute_get_for_read<float>("radius", ATTR_DOMAIN_POINT, 0.0f)
.get_internal_span();
info.create_radius_attribute = true;
}
/* Retrieve handle position attributes, if they exist. */
if (component.attribute_exists("handle_right")) {
curve_info.handle_left = component
.attribute_get_for_read<float3>(
"handle_left", ATTR_DOMAIN_POINT, float3(0))
.get_internal_span();
curve_info.handle_right = component
.attribute_get_for_read<float3>(
"handle_right", ATTR_DOMAIN_POINT, float3(0))
.get_internal_span();
info.create_handle_postion_attributes = true;
}
}
return info;
}
static void execute_realize_curve_task(const RealizeInstancesOptions &options,
const AllCurvesInfo &all_curves_info,
const RealizeCurveTask &task,
const OrderedAttributes &ordered_attributes,
bke::CurvesGeometry &dst_curves,
MutableSpan<GMutableSpan> dst_attribute_spans,
MutableSpan<int> all_dst_ids,
MutableSpan<float3> all_handle_left,
MutableSpan<float3> all_handle_right,
MutableSpan<float> all_radii)
{
const RealizeCurveInfo &curves_info = *task.curve_info;
const Curves &curves_id = *curves_info.curves;
const bke::CurvesGeometry &curves = bke::CurvesGeometry::wrap(curves_id.geometry);
const IndexRange dst_point_range{task.start_indices.point, curves.points_num()};
const IndexRange dst_curve_range{task.start_indices.curve, curves.curves_num()};
copy_transformed_positions(
curves.positions(), task.transform, dst_curves.positions_for_write().slice(dst_point_range));
/* Copy and transform handle positions if necessary. */
if (all_curves_info.create_handle_postion_attributes) {
if (curves_info.handle_left.is_empty()) {
all_handle_left.slice(dst_point_range).fill(float3(0));
}
else {
copy_transformed_positions(
curves_info.handle_left, task.transform, all_handle_left.slice(dst_point_range));
}
if (curves_info.handle_right.is_empty()) {
all_handle_right.slice(dst_point_range).fill(float3(0));
}
else {
copy_transformed_positions(
curves_info.handle_right, task.transform, all_handle_right.slice(dst_point_range));
}
}
/* Copy radius attribute with 1.0 default if it doesn't exist. */
if (all_curves_info.create_radius_attribute) {
if (curves_info.radius.is_empty()) {
all_radii.slice(dst_point_range).fill(1.0f);
}
else {
all_radii.slice(dst_point_range).copy_from(curves_info.radius);
}
}
/* Copy curve offsets. */
const Span<int> src_offsets = curves.offsets();
const MutableSpan<int> dst_offsets = dst_curves.offsets_for_write().slice(dst_curve_range);
threading::parallel_for(curves.curves_range(), 2048, [&](const IndexRange range) {
for (const int i : range) {
dst_offsets[i] = task.start_indices.point + src_offsets[i];
}
});
if (!all_dst_ids.is_empty()) {
create_result_ids(
options, curves_info.stored_ids, task.id, all_dst_ids.slice(dst_point_range));
}
copy_generic_attributes_to_result(
curves_info.attributes,
task.attribute_fallbacks,
ordered_attributes,
[&](const AttributeDomain domain) {
switch (domain) {
case ATTR_DOMAIN_POINT:
return IndexRange(task.start_indices.point, curves.points_num());
case ATTR_DOMAIN_CURVE:
return IndexRange(task.start_indices.curve, curves.curves_num());
default:
BLI_assert_unreachable();
return IndexRange();
}
},
dst_attribute_spans);
}
static void execute_realize_curve_tasks(const RealizeInstancesOptions &options,
const AllCurvesInfo &all_curves_info,
const Span<RealizeCurveTask> tasks,
const OrderedAttributes &ordered_attributes,
GeometrySet &r_realized_geometry)
{
if (tasks.is_empty()) {
return;
}
const RealizeCurveTask &last_task = tasks.last();
const Curves &last_curves = *last_task.curve_info->curves;
const int points_size = last_task.start_indices.point + last_curves.geometry.point_num;
const int curves_size = last_task.start_indices.curve + last_curves.geometry.curve_num;
/* Allocate new curves data-block. */
Curves *dst_curves_id = bke::curves_new_nomain(points_size, curves_size);
bke::CurvesGeometry &dst_curves = bke::CurvesGeometry::wrap(dst_curves_id->geometry);
dst_curves.offsets_for_write().last() = points_size;
CurveComponent &dst_component = r_realized_geometry.get_component_for_write<CurveComponent>();
dst_component.replace(dst_curves_id);
/* Prepare id attribute. */
OutputAttribute_Typed<int> point_ids;
MutableSpan<int> point_ids_span;
if (all_curves_info.create_id_attribute) {
point_ids = dst_component.attribute_try_get_for_output_only<int>("id", ATTR_DOMAIN_POINT);
point_ids_span = point_ids.as_span();
}
/* Prepare generic output attributes. */
Vector<OutputAttribute> dst_attributes;
Vector<GMutableSpan> dst_attribute_spans;
for (const int attribute_index : ordered_attributes.index_range()) {
const AttributeIDRef &attribute_id = ordered_attributes.ids[attribute_index];
const AttributeDomain domain = ordered_attributes.kinds[attribute_index].domain;
const CustomDataType data_type = ordered_attributes.kinds[attribute_index].data_type;
OutputAttribute dst_attribute = dst_component.attribute_try_get_for_output_only(
attribute_id, domain, data_type);
dst_attribute_spans.append(dst_attribute.as_span());
dst_attributes.append(std::move(dst_attribute));
}
/* Prepare handle position attributes if necessary. */
OutputAttribute_Typed<float3> handle_left;
OutputAttribute_Typed<float3> handle_right;
MutableSpan<float3> handle_left_span;
MutableSpan<float3> handle_right_span;
if (all_curves_info.create_handle_postion_attributes) {
handle_left = dst_component.attribute_try_get_for_output_only<float3>("handle_left",
ATTR_DOMAIN_POINT);
handle_right = dst_component.attribute_try_get_for_output_only<float3>("handle_right",
ATTR_DOMAIN_POINT);
handle_left_span = handle_left.as_span();
handle_right_span = handle_right.as_span();
}
/* Prepare radius attribute if necessary. */
OutputAttribute_Typed<float> radius;
MutableSpan<float> radius_span;
if (all_curves_info.create_radius_attribute) {
radius = dst_component.attribute_try_get_for_output_only<float>("radius", ATTR_DOMAIN_POINT);
radius_span = radius.as_span();
}
/* Actually execute all tasks. */
threading::parallel_for(tasks.index_range(), 100, [&](const IndexRange task_range) {
for (const int task_index : task_range) {
const RealizeCurveTask &task = tasks[task_index];
execute_realize_curve_task(options,
all_curves_info,
task,
ordered_attributes,
dst_curves,
dst_attribute_spans,
point_ids_span,
handle_left_span,
handle_right_span,
radius_span);
}
});
/* Save modified attributes. */
for (OutputAttribute &dst_attribute : dst_attributes) {
dst_attribute.save();
}
if (point_ids) {
point_ids.save();
}
if (radius) {
radius.save();
}
if (all_curves_info.create_handle_postion_attributes) {
handle_left.save();
handle_right.save();
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Realize Instances
* \{ */
static void remove_id_attribute_from_instances(GeometrySet &geometry_set)
{
geometry_set.modify_geometry_sets([&](GeometrySet &sub_geometry) {
if (sub_geometry.has<InstancesComponent>()) {
InstancesComponent &component = sub_geometry.get_component_for_write<InstancesComponent>();
component.attributes().remove("id");
}
});
}
GeometrySet realize_instances(GeometrySet geometry_set, const RealizeInstancesOptions &options)
{
/* The algorithm works in three steps:
* 1. Preprocess each unique geometry that is instanced (e.g. each `Mesh`).
* 2. Gather "tasks" that need to be executed to realize the instances. Each task corresponds to
* instances of the previously preprocessed geometry.
* 3. Execute all tasks in parallel.
*/
if (!geometry_set.has_instances()) {
return geometry_set;
}
if (options.keep_original_ids) {
remove_id_attribute_from_instances(geometry_set);
}
AllPointCloudsInfo all_pointclouds_info = preprocess_pointclouds(geometry_set, options);
AllMeshesInfo all_meshes_info = preprocess_meshes(geometry_set, options);
AllCurvesInfo all_curves_info = preprocess_curves(geometry_set, options);
Vector<std::unique_ptr<GArray<>>> temporary_arrays;
const bool create_id_attribute = all_pointclouds_info.create_id_attribute ||
all_meshes_info.create_id_attribute ||
all_curves_info.create_id_attribute;
GatherTasksInfo gather_info = {all_pointclouds_info,
all_meshes_info,
all_curves_info,
create_id_attribute,
temporary_arrays};
const float4x4 transform = float4x4::identity();
InstanceContext attribute_fallbacks(gather_info);
gather_realize_tasks_recursive(gather_info, geometry_set, transform, attribute_fallbacks);
GeometrySet new_geometry_set;
execute_realize_pointcloud_tasks(options,
all_pointclouds_info,
gather_info.r_tasks.pointcloud_tasks,
all_pointclouds_info.attributes,
new_geometry_set);
execute_realize_mesh_tasks(options,
all_meshes_info,
gather_info.r_tasks.mesh_tasks,
all_meshes_info.attributes,
all_meshes_info.materials,
new_geometry_set);
execute_realize_curve_tasks(options,
all_curves_info,
gather_info.r_tasks.curve_tasks,
all_curves_info.attributes,
new_geometry_set);
if (gather_info.r_tasks.first_volume) {
new_geometry_set.add(*gather_info.r_tasks.first_volume);
}
return new_geometry_set;
}
/** \} */
} // namespace blender::geometry
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