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test/source/blender/blenkernel/intern/geometry_fields.cc
Hans Goudey dd75c0b5ec Fix #147429: Set Resolution node doesn't use default for unselected curves 
The fix in this case is to properly use the stored builtin attribute defaults
when capturing the field on the mesh. I extracted that to a function so
the code would read better with early returns.

Pull Request: https://projects.blender.org/blender/blender/pulls/147646
2025-10-08 19:26:12 +02:00

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/* SPDX-FileCopyrightText: 2023 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BLI_array_utils.hh"
#include "BKE_attribute.hh"
#include "BKE_curves.hh"
#include "BKE_geometry_fields.hh"
#include "BKE_geometry_set.hh"
#include "BKE_grease_pencil.hh"
#include "BKE_instances.hh"
#include "BKE_mesh.hh"
#include "DNA_mesh_types.h"
#include "DNA_pointcloud_types.h"
#include "BLT_translation.hh"
#include <fmt/format.h>
namespace blender::bke {
MeshFieldContext::MeshFieldContext(const Mesh &mesh, const AttrDomain domain)
: mesh_(mesh), domain_(domain)
{
BLI_assert(mesh.attributes().domain_supported(domain_));
}
CurvesFieldContext::CurvesFieldContext(const CurvesGeometry &curves, const AttrDomain domain)
: curves_(curves), domain_(domain)
{
BLI_assert(curves.attributes().domain_supported(domain));
}
CurvesFieldContext::CurvesFieldContext(const Curves &curves_id, const AttrDomain domain)
: CurvesFieldContext(curves_id.geometry.wrap(), domain)
{
curves_id_ = &curves_id;
}
GVArray GreasePencilLayerFieldContext::get_varray_for_input(const fn::FieldInput &field_input,
const IndexMask &mask,
ResourceScope &scope) const
{
if (const CurvesFieldInput *curves_field_input = dynamic_cast<const CurvesFieldInput *>(
&field_input))
{
if (const bke::greasepencil::Drawing *drawing = this->grease_pencil().get_eval_drawing(
this->grease_pencil().layer(this->layer_index())))
{
if (drawing->strokes().attributes().domain_supported(this->domain())) {
const CurvesFieldContext context{drawing->strokes(), this->domain()};
return curves_field_input->get_varray_for_context(context, mask, scope);
}
}
return {};
}
return field_input.get_varray_for_context(*this, mask, scope);
}
GeometryFieldContext::GeometryFieldContext(const GeometryFieldContext &other,
const AttrDomain domain)
: geometry_(other.geometry_),
type_(other.type_),
domain_(domain),
curves_id_(other.curves_id_),
grease_pencil_layer_index_(other.grease_pencil_layer_index_)
{
}
GeometryFieldContext::GeometryFieldContext(const void *geometry,
const GeometryComponent::Type type,
const AttrDomain domain,
const int grease_pencil_layer_index)
: geometry_(geometry),
type_(type),
domain_(domain),
grease_pencil_layer_index_(grease_pencil_layer_index)
{
BLI_assert(ELEM(type,
GeometryComponent::Type::Mesh,
GeometryComponent::Type::Curve,
GeometryComponent::Type::PointCloud,
GeometryComponent::Type::GreasePencil,
GeometryComponent::Type::Instance));
}
GeometryFieldContext::GeometryFieldContext(const GeometryComponent &component,
const AttrDomain domain)
: type_(component.type()), domain_(domain)
{
switch (component.type()) {
case GeometryComponent::Type::Mesh: {
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
geometry_ = mesh_component.get();
break;
}
case GeometryComponent::Type::Curve: {
const CurveComponent &curve_component = static_cast<const CurveComponent &>(component);
const Curves *curves = curve_component.get();
geometry_ = curves ? &curves->geometry.wrap() : nullptr;
curves_id_ = curve_component.get();
break;
}
case GeometryComponent::Type::PointCloud: {
const PointCloudComponent &pointcloud_component = static_cast<const PointCloudComponent &>(
component);
geometry_ = pointcloud_component.get();
break;
}
case GeometryComponent::Type::GreasePencil: {
const GreasePencilComponent &grease_pencil_component =
static_cast<const GreasePencilComponent &>(component);
geometry_ = grease_pencil_component.get();
/* Need to use another constructor for other domains. */
BLI_assert(domain == AttrDomain::Layer);
break;
}
case GeometryComponent::Type::Instance: {
const InstancesComponent &instances_component = static_cast<const InstancesComponent &>(
component);
geometry_ = instances_component.get();
break;
}
case GeometryComponent::Type::Volume:
case GeometryComponent::Type::Edit:
BLI_assert_unreachable();
break;
}
}
GeometryFieldContext::GeometryFieldContext(const Mesh &mesh, AttrDomain domain)
: geometry_(&mesh), type_(GeometryComponent::Type::Mesh), domain_(domain)
{
}
GeometryFieldContext::GeometryFieldContext(const CurvesGeometry &curves, AttrDomain domain)
: geometry_(&curves), type_(GeometryComponent::Type::Curve), domain_(domain)
{
}
GeometryFieldContext::GeometryFieldContext(const Curves &curves_id, AttrDomain domain)
: geometry_(&curves_id.geometry.wrap()),
type_(GeometryComponent::Type::Curve),
domain_(domain),
curves_id_(&curves_id)
{
}
GeometryFieldContext::GeometryFieldContext(const PointCloud &points)
: geometry_(&points), type_(GeometryComponent::Type::PointCloud), domain_(AttrDomain::Point)
{
}
GeometryFieldContext::GeometryFieldContext(const GreasePencil &grease_pencil)
: geometry_(&grease_pencil),
type_(GeometryComponent::Type::GreasePencil),
domain_(AttrDomain::Layer)
{
}
GeometryFieldContext::GeometryFieldContext(const GreasePencil &grease_pencil,
const AttrDomain domain,
const int layer_index)
: geometry_(&grease_pencil),
type_(GeometryComponent::Type::GreasePencil),
domain_(domain),
grease_pencil_layer_index_(layer_index)
{
}
GeometryFieldContext::GeometryFieldContext(const Instances &instances)
: geometry_(&instances),
type_(GeometryComponent::Type::Instance),
domain_(AttrDomain::Instance)
{
}
std::optional<AttributeAccessor> GeometryFieldContext::attributes() const
{
if (const Mesh *mesh = this->mesh()) {
return mesh->attributes();
}
if (const CurvesGeometry *curves = this->curves()) {
return curves->attributes();
}
if (const PointCloud *pointcloud = this->pointcloud()) {
return pointcloud->attributes();
}
if (const GreasePencil *grease_pencil = this->grease_pencil()) {
if (domain_ == AttrDomain::Layer) {
return grease_pencil->attributes();
}
if (const greasepencil::Drawing *drawing = grease_pencil->get_eval_drawing(
grease_pencil->layer(grease_pencil_layer_index_)))
{
return drawing->strokes().attributes();
}
}
if (const Instances *instances = this->instances()) {
return instances->attributes();
}
return {};
}
const Mesh *GeometryFieldContext::mesh() const
{
return this->type() == GeometryComponent::Type::Mesh ? static_cast<const Mesh *>(geometry_) :
nullptr;
}
const CurvesGeometry *GeometryFieldContext::curves() const
{
return this->type() == GeometryComponent::Type::Curve ?
static_cast<const CurvesGeometry *>(geometry_) :
nullptr;
}
const PointCloud *GeometryFieldContext::pointcloud() const
{
return this->type() == GeometryComponent::Type::PointCloud ?
static_cast<const PointCloud *>(geometry_) :
nullptr;
}
const GreasePencil *GeometryFieldContext::grease_pencil() const
{
return this->type() == GeometryComponent::Type::GreasePencil ?
static_cast<const GreasePencil *>(geometry_) :
nullptr;
}
const greasepencil::Drawing *GeometryFieldContext::grease_pencil_layer_drawing() const
{
if (!(this->type() == GeometryComponent::Type::GreasePencil) ||
!ELEM(domain_, AttrDomain::Curve, AttrDomain::Point))
{
return nullptr;
}
return this->grease_pencil()->get_eval_drawing(
this->grease_pencil()->layer(this->grease_pencil_layer_index_));
}
const CurvesGeometry *GeometryFieldContext::curves_or_strokes() const
{
if (const CurvesGeometry *curves = this->curves()) {
return curves;
}
if (const greasepencil::Drawing *drawing = this->grease_pencil_layer_drawing()) {
return &drawing->strokes();
}
return nullptr;
}
const Curves *GeometryFieldContext::curves_id() const
{
return curves_id_;
}
const Instances *GeometryFieldContext::instances() const
{
return this->type() == GeometryComponent::Type::Instance ?
static_cast<const Instances *>(geometry_) :
nullptr;
}
GVArray GeometryFieldInput::get_varray_for_context(const fn::FieldContext &context,
const IndexMask &mask,
ResourceScope & /*scope*/) const
{
if (const GeometryFieldContext *geometry_context = dynamic_cast<const GeometryFieldContext *>(
&context))
{
return this->get_varray_for_context(*geometry_context, mask);
}
if (const MeshFieldContext *mesh_context = dynamic_cast<const MeshFieldContext *>(&context)) {
return this->get_varray_for_context({mesh_context->mesh(), mesh_context->domain()}, mask);
}
if (const CurvesFieldContext *curve_context = dynamic_cast<const CurvesFieldContext *>(&context))
{
if (const Curves *curves_id = curve_context->curves_id()) {
return this->get_varray_for_context({*curves_id, curve_context->domain()}, mask);
}
return this->get_varray_for_context({curve_context->curves(), curve_context->domain()}, mask);
}
if (const PointCloudFieldContext *point_context = dynamic_cast<const PointCloudFieldContext *>(
&context))
{
return this->get_varray_for_context({point_context->pointcloud()}, mask);
}
if (const GreasePencilFieldContext *grease_pencil_context =
dynamic_cast<const GreasePencilFieldContext *>(&context))
{
return this->get_varray_for_context({grease_pencil_context->grease_pencil()}, mask);
}
if (const GreasePencilLayerFieldContext *grease_pencil_context =
dynamic_cast<const GreasePencilLayerFieldContext *>(&context))
{
return this->get_varray_for_context({grease_pencil_context->grease_pencil(),
grease_pencil_context->domain(),
grease_pencil_context->layer_index()},
mask);
}
if (const InstancesFieldContext *instances_context = dynamic_cast<const InstancesFieldContext *>(
&context))
{
return this->get_varray_for_context({instances_context->instances()}, mask);
}
return {};
}
std::optional<AttrDomain> GeometryFieldInput::preferred_domain(
const GeometryComponent & /*component*/) const
{
return std::nullopt;
}
GVArray MeshFieldInput::get_varray_for_context(const fn::FieldContext &context,
const IndexMask &mask,
ResourceScope & /*scope*/) const
{
if (const GeometryFieldContext *geometry_context = dynamic_cast<const GeometryFieldContext *>(
&context))
{
if (const Mesh *mesh = geometry_context->mesh()) {
return this->get_varray_for_context(*mesh, geometry_context->domain(), mask);
}
}
if (const MeshFieldContext *mesh_context = dynamic_cast<const MeshFieldContext *>(&context)) {
return this->get_varray_for_context(mesh_context->mesh(), mesh_context->domain(), mask);
}
return {};
}
std::optional<AttrDomain> MeshFieldInput::preferred_domain(const Mesh & /*mesh*/) const
{
return std::nullopt;
}
GVArray CurvesFieldInput::get_varray_for_context(const fn::FieldContext &context,
const IndexMask &mask,
ResourceScope & /*scope*/) const
{
if (const GeometryFieldContext *geometry_context = dynamic_cast<const GeometryFieldContext *>(
&context))
{
if (const CurvesGeometry *curves = geometry_context->curves_or_strokes()) {
return this->get_varray_for_context(*curves, geometry_context->domain(), mask);
}
}
if (const CurvesFieldContext *curves_context = dynamic_cast<const CurvesFieldContext *>(
&context))
{
return this->get_varray_for_context(curves_context->curves(), curves_context->domain(), mask);
}
return {};
}
std::optional<AttrDomain> CurvesFieldInput::preferred_domain(
const CurvesGeometry & /*curves*/) const
{
return std::nullopt;
}
GVArray PointCloudFieldInput::get_varray_for_context(const fn::FieldContext &context,
const IndexMask &mask,
ResourceScope & /*scope*/) const
{
if (const GeometryFieldContext *geometry_context = dynamic_cast<const GeometryFieldContext *>(
&context))
{
if (const PointCloud *pointcloud = geometry_context->pointcloud()) {
return this->get_varray_for_context(*pointcloud, mask);
}
}
if (const PointCloudFieldContext *point_context = dynamic_cast<const PointCloudFieldContext *>(
&context))
{
return this->get_varray_for_context(point_context->pointcloud(), mask);
}
return {};
}
GVArray InstancesFieldInput::get_varray_for_context(const fn::FieldContext &context,
const IndexMask &mask,
ResourceScope & /*scope*/) const
{
if (const GeometryFieldContext *geometry_context = dynamic_cast<const GeometryFieldContext *>(
&context))
{
if (const Instances *instances = geometry_context->instances()) {
return this->get_varray_for_context(*instances, mask);
}
}
if (const InstancesFieldContext *instances_context = dynamic_cast<const InstancesFieldContext *>(
&context))
{
return this->get_varray_for_context(instances_context->instances(), mask);
}
return {};
}
GVArray AttributeFieldInput::get_varray_for_context(const GeometryFieldContext &context,
const IndexMask & /*mask*/) const
{
const bke::AttrType data_type = cpp_type_to_attribute_type(*type_);
const AttrDomain domain = context.domain();
if (const GreasePencil *grease_pencil = context.grease_pencil()) {
const AttributeAccessor layer_attributes = grease_pencil->attributes();
if (domain == AttrDomain::Layer) {
return *layer_attributes.lookup(name_, data_type);
}
if (ELEM(domain, AttrDomain::Point, AttrDomain::Curve)) {
const int layer_index = context.grease_pencil_layer_index();
const AttributeAccessor curves_attributes = *context.attributes();
if (const GAttributeReader reader = curves_attributes.lookup(name_, domain, data_type)) {
return *reader;
}
/* Lookup attribute on the layer domain if it does not exist on points or curves. */
if (const GAttributeReader reader = layer_attributes.lookup(name_)) {
const CPPType &cpp_type = reader.varray.type();
BUFFER_FOR_CPP_TYPE_VALUE(cpp_type, value);
BLI_SCOPED_DEFER([&]() { cpp_type.destruct(value); });
reader.varray.get_to_uninitialized(layer_index, value);
const int domain_size = curves_attributes.domain_size(domain);
return GVArray::from_single(cpp_type, domain_size, value);
}
}
}
else if (context.domain() == bke::AttrDomain::Instance && name_ == "position") {
/* Special case for "position" which is no longer an attribute on instances. */
return bke::instance_position_varray(*context.instances());
}
else if (auto attributes = context.attributes()) {
return *attributes->lookup(name_, domain, data_type);
}
return {};
}
GVArray AttributeExistsFieldInput::get_varray_for_context(const bke::GeometryFieldContext &context,
const IndexMask & /*mask*/) const
{
const AttrDomain domain = context.domain();
if (context.type() == GeometryComponent::Type::GreasePencil) {
const AttributeAccessor layer_attributes = context.grease_pencil()->attributes();
if (context.domain() == AttrDomain::Layer) {
const bool exists = layer_attributes.contains(name_);
const int domain_size = layer_attributes.domain_size(AttrDomain::Layer);
return VArray<bool>::from_single(exists, domain_size);
}
const greasepencil::Drawing *drawing = context.grease_pencil_layer_drawing();
const AttributeAccessor curve_attributes = drawing->strokes().attributes();
const bool exists = layer_attributes.contains(name_) || curve_attributes.contains(name_);
const int domain_size = curve_attributes.domain_size(domain);
return VArray<bool>::from_single(exists, domain_size);
}
const bool exists = context.attributes()->contains(name_);
const int domain_size = context.attributes()->domain_size(domain);
return VArray<bool>::from_single(exists, domain_size);
}
std::string AttributeFieldInput::socket_inspection_name() const
{
if (socket_inspection_name_) {
return *socket_inspection_name_;
}
return fmt::format(fmt::runtime(TIP_("\"{}\" attribute from geometry")), name_);
}
uint64_t AttributeFieldInput::hash() const
{
return get_default_hash(name_, type_);
}
bool AttributeFieldInput::is_equal_to(const fn::FieldNode &other) const
{
if (const AttributeFieldInput *other_typed = dynamic_cast<const AttributeFieldInput *>(&other)) {
return name_ == other_typed->name_ && type_ == other_typed->type_;
}
return false;
}
std::optional<AttrDomain> AttributeFieldInput::preferred_domain(
const GeometryComponent &component) const
{
const std::optional<AttributeAccessor> attributes = component.attributes();
if (!attributes.has_value()) {
return std::nullopt;
}
const std::optional<AttributeMetaData> meta_data = attributes->lookup_meta_data(name_);
if (!meta_data.has_value()) {
return std::nullopt;
}
return meta_data->domain;
}
static StringRef get_random_id_attribute_name(const AttrDomain domain)
{
switch (domain) {
case AttrDomain::Point:
case AttrDomain::Instance:
return "id";
default:
return "";
}
}
GVArray IDAttributeFieldInput::get_varray_for_context(const GeometryFieldContext &context,
const IndexMask &mask) const
{
const StringRef name = get_random_id_attribute_name(context.domain());
if (auto attributes = context.attributes()) {
if (GVArray attribute = *attributes->lookup<int>(name, context.domain())) {
return attribute;
}
}
/* Use the index as the fallback if no random ID attribute exists. */
return fn::IndexFieldInput::get_index_varray(mask);
}
std::string IDAttributeFieldInput::socket_inspection_name() const
{
return TIP_("ID / Index");
}
uint64_t IDAttributeFieldInput::hash() const
{
/* All random ID attribute inputs are the same within the same evaluation context. */
return 92386459827;
}
bool IDAttributeFieldInput::is_equal_to(const fn::FieldNode &other) const
{
/* All random ID attribute inputs are the same within the same evaluation context. */
return dynamic_cast<const IDAttributeFieldInput *>(&other) != nullptr;
}
GVArray NamedLayerSelectionFieldInput::get_varray_for_context(
const bke::GeometryFieldContext &context, const IndexMask &mask) const
{
using namespace bke::greasepencil;
const AttrDomain domain = context.domain();
if (!ELEM(domain, AttrDomain::Point, AttrDomain::Curve, AttrDomain::Layer)) {
return {};
}
const GreasePencil &grease_pencil = *context.grease_pencil();
if (!context.grease_pencil()) {
return {};
}
auto layer_is_selected = [selection_name = StringRef(layer_name_),
&grease_pencil,
size = mask.min_array_size()](const int layer_i) {
if (layer_i < 0 || layer_i >= grease_pencil.layers().size()) {
return false;
}
const Layer &layer = grease_pencil.layer(layer_i);
return layer.name() == selection_name;
};
if (ELEM(domain, AttrDomain::Point, AttrDomain::Curve)) {
const int layer_i = context.grease_pencil_layer_index();
const bool selected = layer_is_selected(layer_i);
return VArray<bool>::from_single(selected, mask.min_array_size());
}
return VArray<bool>::from_func(mask.min_array_size(), layer_is_selected);
}
uint64_t NamedLayerSelectionFieldInput::hash() const
{
return get_default_hash(layer_name_, type_);
}
bool NamedLayerSelectionFieldInput::is_equal_to(const fn::FieldNode &other) const
{
if (const NamedLayerSelectionFieldInput *other_named_layer =
dynamic_cast<const NamedLayerSelectionFieldInput *>(&other))
{
return layer_name_ == other_named_layer->layer_name_;
}
return false;
}
std::optional<AttrDomain> NamedLayerSelectionFieldInput::preferred_domain(
const bke::GeometryComponent & /*component*/) const
{
return AttrDomain::Layer;
}
template<typename T>
void copy_with_checked_indices(const VArray<T> &src,
const VArray<int> &indices,
const IndexMask &mask,
MutableSpan<T> dst)
{
const IndexRange src_range = src.index_range();
devirtualize_varray2(src, indices, [&](const auto src, const auto indices) {
mask.foreach_index(GrainSize(4096), [&](const int i) {
const int index = indices[i];
if (src_range.contains(index)) {
dst[i] = src[index];
}
else {
dst[i] = {};
}
});
});
}
void copy_with_checked_indices(const GVArray &src,
const VArray<int> &indices,
const IndexMask &mask,
GMutableSpan dst)
{
bke::attribute_math::convert_to_static_type(src.type(), [&](auto dummy) {
using T = decltype(dummy);
copy_with_checked_indices(src.typed<T>(), indices, mask, dst.typed<T>());
});
}
EvaluateAtIndexInput::EvaluateAtIndexInput(fn::Field<int> index_field,
fn::GField value_field,
AttrDomain value_field_domain)
: bke::GeometryFieldInput(value_field.cpp_type(), "Evaluate at Index"),
index_field_(std::move(index_field)),
value_field_(std::move(value_field)),
value_field_domain_(value_field_domain)
{
}
GVArray EvaluateAtIndexInput::get_varray_for_context(const bke::GeometryFieldContext &context,
const IndexMask &mask) const
{
const std::optional<AttributeAccessor> attributes = context.attributes();
if (!attributes) {
return {};
}
const bke::GeometryFieldContext value_context{context, value_field_domain_};
fn::FieldEvaluator value_evaluator{value_context, attributes->domain_size(value_field_domain_)};
value_evaluator.add(value_field_);
value_evaluator.evaluate();
const GVArray &values = value_evaluator.get_evaluated(0);
fn::FieldEvaluator index_evaluator{context, &mask};
index_evaluator.add(index_field_);
index_evaluator.evaluate();
const VArray<int> indices = index_evaluator.get_evaluated<int>(0);
GArray<> dst_array(values.type(), mask.min_array_size());
copy_with_checked_indices(values, indices, mask, dst_array);
return GVArray::from_garray(std::move(dst_array));
}
EvaluateOnDomainInput::EvaluateOnDomainInput(fn::GField field, AttrDomain domain)
: bke::GeometryFieldInput(field.cpp_type(), "Evaluate on Domain"),
src_field_(std::move(field)),
src_domain_(domain)
{
}
GVArray EvaluateOnDomainInput::get_varray_for_context(const bke::GeometryFieldContext &context,
const IndexMask & /*mask*/) const
{
const AttrDomain dst_domain = context.domain();
const int dst_domain_size = context.attributes()->domain_size(dst_domain);
const CPPType &cpp_type = src_field_.cpp_type();
if (context.type() == GeometryComponent::Type::GreasePencil &&
(src_domain_ == AttrDomain::Layer) != (dst_domain == AttrDomain::Layer))
{
/* Evaluate field just for the current layer. */
if (src_domain_ == AttrDomain::Layer) {
const bke::GeometryFieldContext src_domain_context{context, AttrDomain::Layer};
const int layer_index = context.grease_pencil_layer_index();
const IndexMask single_layer_mask = IndexRange(layer_index, 1);
fn::FieldEvaluator value_evaluator{src_domain_context, &single_layer_mask};
value_evaluator.add(src_field_);
value_evaluator.evaluate();
const GVArray &values = value_evaluator.get_evaluated(0);
BUFFER_FOR_CPP_TYPE_VALUE(cpp_type, value);
BLI_SCOPED_DEFER([&]() { cpp_type.destruct(value); });
values.get_to_uninitialized(layer_index, value);
return GVArray::from_single(cpp_type, dst_domain_size, value);
}
/* We don't adapt from curve to layer domain currently. */
return GVArray::from_single_default(cpp_type, dst_domain_size);
}
const bke::AttributeAccessor attributes = *context.attributes();
const bke::GeometryFieldContext other_domain_context{context, src_domain_};
const int64_t src_domain_size = attributes.domain_size(src_domain_);
GArray<> values(cpp_type, src_domain_size);
fn::FieldEvaluator value_evaluator{other_domain_context, src_domain_size};
value_evaluator.add_with_destination(src_field_, values.as_mutable_span());
value_evaluator.evaluate();
return attributes.adapt_domain(GVArray::from_garray(std::move(values)), src_domain_, dst_domain);
}
void EvaluateOnDomainInput::for_each_field_input_recursive(
FunctionRef<void(const FieldInput &)> fn) const
{
src_field_.node().for_each_field_input_recursive(fn);
}
std::optional<AttrDomain> EvaluateOnDomainInput::preferred_domain(
const GeometryComponent & /*component*/) const
{
return src_domain_;
}
} // namespace blender::bke
/* -------------------------------------------------------------------- */
/** \name Mesh and Curve Normals Field Input
* \{ */
namespace blender::bke {
GVArray NormalFieldInput::get_varray_for_context(const GeometryFieldContext &context,
const IndexMask &mask) const
{
if (const Mesh *mesh = context.mesh()) {
return mesh_normals_varray(
*mesh, mask, context.domain(), legacy_corner_normals_, true_normals_);
}
if (const CurvesGeometry *curves = context.curves_or_strokes()) {
return curve_normals_varray(*curves, context.domain());
}
return {};
}
std::string NormalFieldInput::socket_inspection_name() const
{
return true_normals_ ? TIP_("True Normal") : TIP_("Normal");
}
uint64_t NormalFieldInput::hash() const
{
return get_default_hash(2980541, legacy_corner_normals_, true_normals_);
}
bool NormalFieldInput::is_equal_to(const fn::FieldNode &other) const
{
if (const NormalFieldInput *other_typed = dynamic_cast<const NormalFieldInput *>(&other)) {
return legacy_corner_normals_ == other_typed->legacy_corner_normals_ &&
true_normals_ == other_typed->true_normals_;
}
return false;
}
static std::optional<StringRefNull> try_get_field_direct_attribute_id(const fn::GField &any_field)
{
if (const auto *field = dynamic_cast<const AttributeFieldInput *>(&any_field.node())) {
return field->attribute_name();
}
return {};
}
static bool attribute_kind_matches(const AttributeMetaData meta_data,
const AttrDomain domain,
const bke::AttrType data_type)
{
return meta_data.domain == domain && meta_data.data_type == data_type;
}
/**
* Some fields reference attributes directly. When the referenced attribute has the requested type
* and domain, use implicit sharing to avoid duplication when creating the captured attribute.
*/
static bool try_add_shared_field_attribute(MutableAttributeAccessor attributes,
const StringRef id_to_create,
const AttrDomain domain,
const fn::GField &field)
{
const std::optional<StringRef> field_id = try_get_field_direct_attribute_id(field);
if (!field_id) {
return false;
}
const std::optional<AttributeMetaData> meta_data = attributes.lookup_meta_data(*field_id);
if (!meta_data) {
return false;
}
const bke::AttrType data_type = bke::cpp_type_to_attribute_type(field.cpp_type());
if (!attribute_kind_matches(*meta_data, domain, data_type)) {
/* Avoid costly domain and type interpolation, which would make sharing impossible. */
return false;
}
const GAttributeReader attribute = attributes.lookup(*field_id, domain, data_type);
if (!attribute.sharing_info || !attribute.varray.is_span()) {
return false;
}
const AttributeInitShared init(attribute.varray.get_internal_span().data(),
*attribute.sharing_info);
return attributes.add(id_to_create, domain, data_type, init);
}
static bool attribute_data_matches_varray(const GAttributeReader &attribute, const GVArray &varray)
{
const CommonVArrayInfo varray_info = varray.common_info();
if (varray_info.type != CommonVArrayInfo::Type::Span) {
return false;
}
const CommonVArrayInfo attribute_info = attribute.varray.common_info();
if (attribute_info.type != CommonVArrayInfo::Type::Span) {
return false;
}
return varray_info.data == attribute_info.data;
}
static void initialize_new_data(MutableAttributeAccessor &attributes,
const AttrDomain domain,
const int domain_size,
const StringRef name,
const CPPType &type,
const bke::AttrType data_type,
void *buffer)
{
/* NOTE: It's unnecessary to fill the values for elements that will be selected and also set
* during field evaluation. A future optimization could evaluate the selection separately and use
* its inverse here. */
if (attributes.is_builtin(name)) {
if (const GPointer value = attributes.get_builtin_default(name)) {
type.fill_construct_n(value.get(), buffer, domain_size);
return;
}
}
if (const GAttributeReader old_attribute = attributes.lookup(name, domain, data_type)) {
old_attribute.varray.materialize(buffer);
return;
}
type.fill_construct_n(type.default_value(), buffer, domain_size);
}
bool try_capture_fields_on_geometry(MutableAttributeAccessor attributes,
const fn::FieldContext &field_context,
const Span<StringRef> attribute_ids,
const AttrDomain domain,
const fn::Field<bool> &selection,
const Span<fn::GField> fields)
{
BLI_assert(attribute_ids.size() == fields.size());
const int domain_size = attributes.domain_size(domain);
if (domain_size == 0) {
bool all_added = true;
for (const int i : attribute_ids.index_range()) {
const bke::AttrType data_type = bke::cpp_type_to_attribute_type(fields[i].cpp_type());
all_added &= attributes.add(attribute_ids[i], domain, data_type, AttributeInitConstruct{});
}
return all_added;
}
fn::FieldEvaluator evaluator{field_context, domain_size};
evaluator.set_selection(selection);
const bool selection_is_full = !selection.node().depends_on_input() &&
fn::evaluate_constant_field(selection);
struct StoreResult {
int input_index;
int evaluator_index;
};
Vector<StoreResult> results_to_store;
struct AddResult {
int input_index;
int evaluator_index;
void *buffer;
};
Vector<AddResult> results_to_add;
bool success = true;
for (const int input_index : attribute_ids.index_range()) {
const StringRef id = attribute_ids[input_index];
const CPPType &type = fields[input_index].cpp_type();
const bke::AttrType data_type = bke::cpp_type_to_attribute_type(type);
/* Avoid adding or writing to builtin attributes with an incorrect type or domain. */
if (const std::optional<AttributeDomainAndType> meta_data =
attributes.get_builtin_domain_and_type(id))
{
if (*meta_data != AttributeDomainAndType{domain, data_type}) {
success = false;
continue;
}
}
const AttributeValidator validator = attributes.lookup_validator(id);
const fn::GField field = validator.validate_field_if_necessary(fields[input_index]);
/* We are writing to an attribute that exists already with the correct domain and type. */
if (const GAttributeReader dst = attributes.lookup(id)) {
if (dst.domain == domain && dst.varray.type() == field.cpp_type()) {
const int evaluator_index = evaluator.add(field);
results_to_store.append({input_index, evaluator_index});
continue;
}
}
if (!validator && selection_is_full) {
if (try_add_shared_field_attribute(attributes, id, domain, field)) {
continue;
}
}
/* Could avoid allocating a new buffer if:
* - The field does not depend on that attribute (we can't easily check for that yet). */
void *buffer = MEM_mallocN_aligned(type.size * domain_size, type.alignment, __func__);
if (!selection_is_full) {
initialize_new_data(attributes, domain, domain_size, id, type, data_type, buffer);
}
GMutableSpan dst(type, buffer, domain_size);
const int evaluator_index = evaluator.add_with_destination(field, dst);
results_to_add.append({input_index, evaluator_index, buffer});
}
evaluator.evaluate();
const IndexMask &mask = evaluator.get_evaluated_selection_as_mask();
for (const StoreResult &result : results_to_store) {
const StringRef id = attribute_ids[result.input_index];
const GVArray &result_data = evaluator.get_evaluated(result.evaluator_index);
const GAttributeReader dst = attributes.lookup(id);
if (!attribute_data_matches_varray(dst, result_data)) {
GSpanAttributeWriter dst_mut = attributes.lookup_for_write_span(id);
array_utils::copy(result_data, mask, dst_mut.span);
dst_mut.finish();
}
}
for (const AddResult &result : results_to_add) {
const StringRef id = attribute_ids[result.input_index];
attributes.remove(id);
const CPPType &type = fields[result.input_index].cpp_type();
const bke::AttrType data_type = bke::cpp_type_to_attribute_type(type);
if (!attributes.add(id, domain, data_type, AttributeInitMoveArray(result.buffer))) {
/* If the name corresponds to a builtin attribute, removing the attribute might fail if
* it's required, adding the attribute might fail if the domain or type is incorrect. */
type.destruct_n(result.buffer, domain_size);
MEM_freeN(result.buffer);
success = false;
}
}
return success;
}
bool try_capture_fields_on_geometry(GeometryComponent &component,
const Span<StringRef> attribute_ids,
const AttrDomain domain,
const fn::Field<bool> &selection,
const Span<fn::GField> fields)
{
const GeometryComponent::Type component_type = component.type();
if (component_type == GeometryComponent::Type::GreasePencil &&
ELEM(domain, AttrDomain::Point, AttrDomain::Curve))
{
/* Capture the field on every layer individually. */
auto &grease_pencil_component = static_cast<GreasePencilComponent &>(component);
GreasePencil *grease_pencil = grease_pencil_component.get_for_write();
if (grease_pencil == nullptr) {
return false;
}
bool any_success = false;
threading::parallel_for(grease_pencil->layers().index_range(), 8, [&](const IndexRange range) {
for (const int layer_index : range) {
if (greasepencil::Drawing *drawing = grease_pencil->get_eval_drawing(
grease_pencil->layer(layer_index)))
{
const GeometryFieldContext field_context{*grease_pencil, domain, layer_index};
const bool success = try_capture_fields_on_geometry(
drawing->strokes_for_write().attributes_for_write(),
field_context,
attribute_ids,
domain,
selection,
fields);
if (success & !any_success) {
any_success = true;
}
}
}
});
return any_success;
}
if (component_type == GeometryComponent::Type::GreasePencil && domain != AttrDomain::Layer) {
/* The remaining code only handles the layer domain for grease pencil geometries. */
return false;
}
MutableAttributeAccessor attributes = *component.attributes_for_write();
const GeometryFieldContext field_context{component, domain};
return try_capture_fields_on_geometry(
attributes, field_context, attribute_ids, domain, selection, fields);
}
bool try_capture_fields_on_geometry(GeometryComponent &component,
const Span<StringRef> attribute_ids,
const AttrDomain domain,
const Span<fn::GField> fields)
{
const fn::Field<bool> selection = fn::make_constant_field<bool>(true);
return try_capture_fields_on_geometry(component, attribute_ids, domain, selection, fields);
}
std::optional<AttrDomain> try_detect_field_domain(const GeometryComponent &component,
const fn::GField &field)
{
const GeometryComponent::Type component_type = component.type();
if (component_type == GeometryComponent::Type::PointCloud) {
return AttrDomain::Point;
}
if (component_type == GeometryComponent::Type::GreasePencil) {
return AttrDomain::Layer;
}
if (component_type == GeometryComponent::Type::Instance) {
return AttrDomain::Instance;
}
const std::shared_ptr<const fn::FieldInputs> &field_inputs = field.node().field_inputs();
if (!field_inputs) {
return std::nullopt;
}
std::optional<AttrDomain> output_domain;
auto handle_domain = [&](const std::optional<AttrDomain> domain) {
if (!domain.has_value()) {
return false;
}
if (output_domain.has_value()) {
if (*output_domain != *domain) {
return false;
}
return true;
}
output_domain = domain;
return true;
};
if (component_type == GeometryComponent::Type::Mesh) {
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
const Mesh *mesh = mesh_component.get();
if (mesh == nullptr) {
return std::nullopt;
}
for (const fn::FieldInput &field_input : field_inputs->deduplicated_nodes) {
if (const auto *geometry_field_input = dynamic_cast<const GeometryFieldInput *>(
&field_input))
{
if (!handle_domain(geometry_field_input->preferred_domain(component))) {
return std::nullopt;
}
}
else if (const auto *mesh_field_input = dynamic_cast<const MeshFieldInput *>(&field_input)) {
if (!handle_domain(mesh_field_input->preferred_domain(*mesh))) {
return std::nullopt;
}
}
else {
return std::nullopt;
}
}
}
if (component_type == GeometryComponent::Type::Curve) {
const CurveComponent &curve_component = static_cast<const CurveComponent &>(component);
const Curves *curves = curve_component.get();
if (curves == nullptr) {
return std::nullopt;
}
for (const fn::FieldInput &field_input : field_inputs->deduplicated_nodes) {
if (const auto *geometry_field_input = dynamic_cast<const GeometryFieldInput *>(
&field_input))
{
if (!handle_domain(geometry_field_input->preferred_domain(component))) {
return std::nullopt;
}
}
else if (const auto *curves_field_input = dynamic_cast<const CurvesFieldInput *>(
&field_input))
{
if (!handle_domain(curves_field_input->preferred_domain(curves->geometry.wrap()))) {
return std::nullopt;
}
}
else {
return std::nullopt;
}
}
}
return output_domain;
}
} // namespace blender::bke
/** \} */
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