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/*
* 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 "BLI_listbase.h"
#include "BLI_threads.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "BKE_attribute_access.hh"
#include "BKE_attribute_math.hh"
#include "BKE_deform.h"
#include "BKE_geometry_set.hh"
#include "BKE_lib_id.h"
#include "BKE_mesh.h"
#include "attribute_access_intern.hh"
/* Can't include BKE_object_deform.h right now, due to an enum forward declaration. */
extern "C" MDeformVert *BKE_object_defgroup_data_create(ID *id);
using blender::bke::ReadAttributePtr;
/* -------------------------------------------------------------------- */
/** \name Geometry Component Implementation
* \{ */
MeshComponent::MeshComponent() : GeometryComponent(GeometryComponentType::Mesh)
{
}
MeshComponent::~MeshComponent()
{
this->clear();
}
GeometryComponent *MeshComponent::copy() const
{
MeshComponent *new_component = new MeshComponent();
if (mesh_ != nullptr) {
new_component->mesh_ = BKE_mesh_copy_for_eval(mesh_, false);
new_component->ownership_ = GeometryOwnershipType::Owned;
new_component->vertex_group_names_ = blender::Map(vertex_group_names_);
}
return new_component;
}
void MeshComponent::clear()
{
BLI_assert(this->is_mutable());
if (mesh_ != nullptr) {
if (ownership_ == GeometryOwnershipType::Owned) {
BKE_id_free(nullptr, mesh_);
}
mesh_ = nullptr;
}
vertex_group_names_.clear();
}
bool MeshComponent::has_mesh() const
{
return mesh_ != nullptr;
}
/* Clear the component and replace it with the new mesh. */
void MeshComponent::replace(Mesh *mesh, GeometryOwnershipType ownership)
{
BLI_assert(this->is_mutable());
this->clear();
mesh_ = mesh;
ownership_ = ownership;
}
/* This function exists for the same reason as #vertex_group_names_. Non-nodes modifiers need to
* be able to replace the mesh data without losing the vertex group names, which may have come
* from another object. */
void MeshComponent::replace_mesh_but_keep_vertex_group_names(Mesh *mesh,
GeometryOwnershipType ownership)
{
BLI_assert(this->is_mutable());
if (mesh_ != nullptr) {
if (ownership_ == GeometryOwnershipType::Owned) {
BKE_id_free(nullptr, mesh_);
}
mesh_ = nullptr;
}
mesh_ = mesh;
ownership_ = ownership;
}
/* Return the mesh and clear the component. The caller takes over responsibility for freeing the
* mesh (if the component was responsible before). */
Mesh *MeshComponent::release()
{
BLI_assert(this->is_mutable());
Mesh *mesh = mesh_;
mesh_ = nullptr;
return mesh;
}
void MeshComponent::copy_vertex_group_names_from_object(const Object &object)
{
BLI_assert(this->is_mutable());
vertex_group_names_.clear();
int index = 0;
LISTBASE_FOREACH (const bDeformGroup *, group, &object.defbase) {
vertex_group_names_.add(group->name, index);
index++;
}
}
const blender::Map<std::string, int> &MeshComponent::vertex_group_names() const
{
return vertex_group_names_;
}
/* This is only exposed for the internal attribute API. */
blender::Map<std::string, int> &MeshComponent::vertex_group_names()
{
return vertex_group_names_;
}
/* Get the mesh from this component. This method can be used by multiple threads at the same
* time. Therefore, the returned mesh should not be modified. No ownership is transferred. */
const Mesh *MeshComponent::get_for_read() const
{
return mesh_;
}
/* Get the mesh from this component. This method can only be used when the component is mutable,
* i.e. it is not shared. The returned mesh can be modified. No ownership is transferred. */
Mesh *MeshComponent::get_for_write()
{
BLI_assert(this->is_mutable());
if (ownership_ == GeometryOwnershipType::ReadOnly) {
mesh_ = BKE_mesh_copy_for_eval(mesh_, false);
ownership_ = GeometryOwnershipType::Owned;
}
return mesh_;
}
bool MeshComponent::is_empty() const
{
return mesh_ == nullptr;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Attribute Access
* \{ */
int MeshComponent::attribute_domain_size(const AttributeDomain domain) const
{
BLI_assert(this->attribute_domain_supported(domain));
if (mesh_ == nullptr) {
return 0;
}
switch (domain) {
case ATTR_DOMAIN_CORNER:
return mesh_->totloop;
case ATTR_DOMAIN_POINT:
return mesh_->totvert;
case ATTR_DOMAIN_EDGE:
return mesh_->totedge;
case ATTR_DOMAIN_POLYGON:
return mesh_->totpoly;
default:
BLI_assert(false);
break;
}
return 0;
}
namespace blender::bke {
template<typename T>
static void adapt_mesh_domain_corner_to_point_impl(const Mesh &mesh,
const TypedReadAttribute<T> &attribute,
MutableSpan<T> r_values)
{
BLI_assert(r_values.size() == mesh.totvert);
attribute_math::DefaultMixer<T> mixer(r_values);
for (const int loop_index : IndexRange(mesh.totloop)) {
const T value = attribute[loop_index];
const MLoop &loop = mesh.mloop[loop_index];
const int point_index = loop.v;
mixer.mix_in(point_index, value);
}
mixer.finalize();
}
static ReadAttributePtr adapt_mesh_domain_corner_to_point(const Mesh &mesh,
ReadAttributePtr attribute)
{
ReadAttributePtr new_attribute;
const CustomDataType data_type = attribute->custom_data_type();
attribute_math::convert_to_static_type(data_type, [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
/* We compute all interpolated values at once, because for this interpolation, one has to
* iterate over all loops anyway. */
Array<T> values(mesh.totvert);
adapt_mesh_domain_corner_to_point_impl<T>(mesh, *attribute, values);
new_attribute = std::make_unique<OwnedArrayReadAttribute<T>>(ATTR_DOMAIN_POINT,
std::move(values));
}
});
return new_attribute;
}
template<typename T>
static void adapt_mesh_domain_point_to_corner_impl(const Mesh &mesh,
const TypedReadAttribute<T> &attribute,
MutableSpan<T> r_values)
{
BLI_assert(r_values.size() == mesh.totloop);
for (const int loop_index : IndexRange(mesh.totloop)) {
const int vertex_index = mesh.mloop[loop_index].v;
r_values[loop_index] = attribute[vertex_index];
}
}
static ReadAttributePtr adapt_mesh_domain_point_to_corner(const Mesh &mesh,
ReadAttributePtr attribute)
{
ReadAttributePtr new_attribute;
const CustomDataType data_type = attribute->custom_data_type();
attribute_math::convert_to_static_type(data_type, [&](auto dummy) {
using T = decltype(dummy);
/* It is not strictly necessary to compute the value for all corners here. Instead one could
* lazily lookup the mesh topology when a specific index accessed. This can be more efficient
* when an algorithm only accesses very few of the corner values. However, for the algorithms
* we currently have, precomputing the array is fine. Also, it is easier to implement. */
Array<T> values(mesh.totloop);
adapt_mesh_domain_point_to_corner_impl<T>(mesh, *attribute, values);
new_attribute = std::make_unique<OwnedArrayReadAttribute<T>>(ATTR_DOMAIN_CORNER,
std::move(values));
});
return new_attribute;
}
} // namespace blender::bke
ReadAttributePtr MeshComponent::attribute_try_adapt_domain(ReadAttributePtr attribute,
const AttributeDomain new_domain) const
{
if (!attribute) {
return {};
}
if (attribute->size() == 0) {
return {};
}
const AttributeDomain old_domain = attribute->domain();
if (old_domain == new_domain) {
return attribute;
}
switch (old_domain) {
case ATTR_DOMAIN_CORNER: {
switch (new_domain) {
case ATTR_DOMAIN_POINT:
return blender::bke::adapt_mesh_domain_corner_to_point(*mesh_, std::move(attribute));
default:
break;
}
break;
}
case ATTR_DOMAIN_POINT: {
switch (new_domain) {
case ATTR_DOMAIN_CORNER:
return blender::bke::adapt_mesh_domain_point_to_corner(*mesh_, std::move(attribute));
default:
break;
}
}
default:
break;
}
return {};
}
static Mesh *get_mesh_from_component_for_write(GeometryComponent &component)
{
BLI_assert(component.type() == GeometryComponentType::Mesh);
MeshComponent &mesh_component = static_cast<MeshComponent &>(component);
return mesh_component.get_for_write();
}
static const Mesh *get_mesh_from_component_for_read(const GeometryComponent &component)
{
BLI_assert(component.type() == GeometryComponentType::Mesh);
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
return mesh_component.get_for_read();
}
namespace blender::bke {
static float3 get_vertex_position(const MVert &vert)
{
return float3(vert.co);
}
static void set_vertex_position(MVert &vert, const float3 &position)
{
copy_v3_v3(vert.co, position);
}
static ReadAttributePtr make_vertex_position_read_attribute(const void *data,
const int domain_size)
{
return std::make_unique<DerivedArrayReadAttribute<MVert, float3, get_vertex_position>>(
ATTR_DOMAIN_POINT, Span<MVert>((const MVert *)data, domain_size));
}
static WriteAttributePtr make_vertex_position_write_attribute(void *data, const int domain_size)
{
return std::make_unique<
DerivedArrayWriteAttribute<MVert, float3, get_vertex_position, set_vertex_position>>(
ATTR_DOMAIN_POINT, MutableSpan<MVert>((MVert *)data, domain_size));
}
static void tag_normals_dirty_when_writing_position(GeometryComponent &component)
{
Mesh *mesh = get_mesh_from_component_for_write(component);
if (mesh != nullptr) {
mesh->runtime.cd_dirty_vert |= CD_MASK_NORMAL;
}
}
static int get_material_index(const MPoly &mpoly)
{
return static_cast<int>(mpoly.mat_nr);
}
static void set_material_index(MPoly &mpoly, const int &index)
{
mpoly.mat_nr = static_cast<short>(std::clamp(index, 0, SHRT_MAX));
}
static ReadAttributePtr make_material_index_read_attribute(const void *data, const int domain_size)
{
return std::make_unique<DerivedArrayReadAttribute<MPoly, int, get_material_index>>(
ATTR_DOMAIN_POLYGON, Span<MPoly>((const MPoly *)data, domain_size));
}
static WriteAttributePtr make_material_index_write_attribute(void *data, const int domain_size)
{
return std::make_unique<
DerivedArrayWriteAttribute<MPoly, int, get_material_index, set_material_index>>(
ATTR_DOMAIN_POLYGON, MutableSpan<MPoly>((MPoly *)data, domain_size));
}
static float3 get_vertex_normal(const MVert &vert)
{
float3 result;
normal_short_to_float_v3(result, vert.no);
return result;
}
static ReadAttributePtr make_vertex_normal_read_attribute(const void *data, const int domain_size)
{
return std::make_unique<DerivedArrayReadAttribute<MVert, float3, get_vertex_normal>>(
ATTR_DOMAIN_POINT, Span<MVert>((const MVert *)data, domain_size));
}
static void update_vertex_normals_when_dirty(const GeometryComponent &component)
{
const Mesh *mesh = get_mesh_from_component_for_read(component);
if (mesh == nullptr) {
return;
}
/* Since normals are derived data, const write access to them is okay. However, ensure that
* two threads don't use write normals to a mesh at the same time. Note that this relies on
* the idempotence of the operation; calculating the normals just fills the MVert struct
* rather than allocating new memory. */
if (mesh->runtime.cd_dirty_vert & CD_MASK_NORMAL) {
ThreadMutex *mesh_eval_mutex = (ThreadMutex *)mesh->runtime.eval_mutex;
BLI_mutex_lock(mesh_eval_mutex);
/* Check again to avoid a second thread needlessly recalculating the same normals. */
if (mesh->runtime.cd_dirty_vert & CD_MASK_NORMAL) {
BKE_mesh_calc_normals(const_cast<Mesh *>(mesh));
}
BLI_mutex_unlock(mesh_eval_mutex);
}
}
static bool get_shade_smooth(const MPoly &mpoly)
{
return mpoly.flag & ME_SMOOTH;
}
static void set_shade_smooth(MPoly &mpoly, const bool &value)
{
SET_FLAG_FROM_TEST(mpoly.flag, value, ME_SMOOTH);
}
static ReadAttributePtr make_shade_smooth_read_attribute(const void *data, const int domain_size)
{
return std::make_unique<DerivedArrayReadAttribute<MPoly, bool, get_shade_smooth>>(
ATTR_DOMAIN_POLYGON, Span<MPoly>((const MPoly *)data, domain_size));
}
static WriteAttributePtr make_shade_smooth_write_attribute(void *data, const int domain_size)
{
return std::make_unique<
DerivedArrayWriteAttribute<MPoly, bool, get_shade_smooth, set_shade_smooth>>(
ATTR_DOMAIN_POLYGON, MutableSpan<MPoly>((MPoly *)data, domain_size));
}
static float2 get_loop_uv(const MLoopUV &uv)
{
return float2(uv.uv);
}
static void set_loop_uv(MLoopUV &uv, const float2 &co)
{
copy_v2_v2(uv.uv, co);
}
static ReadAttributePtr make_uvs_read_attribute(const void *data, const int domain_size)
{
return std::make_unique<DerivedArrayReadAttribute<MLoopUV, float2, get_loop_uv>>(
ATTR_DOMAIN_CORNER, Span((const MLoopUV *)data, domain_size));
}
static WriteAttributePtr make_uvs_write_attribute(void *data, const int domain_size)
{
return std::make_unique<DerivedArrayWriteAttribute<MLoopUV, float2, get_loop_uv, set_loop_uv>>(
ATTR_DOMAIN_CORNER, MutableSpan((MLoopUV *)data, domain_size));
}
static Color4f get_loop_color(const MLoopCol &col)
{
Color4f value;
rgba_uchar_to_float(value, &col.r);
return value;
}
static void set_loop_color(MLoopCol &col, const Color4f &value)
{
rgba_float_to_uchar(&col.r, value);
}
static ReadAttributePtr make_vertex_color_read_attribute(const void *data, const int domain_size)
{
return std::make_unique<DerivedArrayReadAttribute<MLoopCol, Color4f, get_loop_color>>(
ATTR_DOMAIN_CORNER, Span((const MLoopCol *)data, domain_size));
}
static WriteAttributePtr make_vertex_color_write_attribute(void *data, const int domain_size)
{
return std::make_unique<
DerivedArrayWriteAttribute<MLoopCol, Color4f, get_loop_color, set_loop_color>>(
ATTR_DOMAIN_CORNER, MutableSpan((MLoopCol *)data, domain_size));
}
class VertexWeightWriteAttribute final : public WriteAttribute {
private:
MDeformVert *dverts_;
const int dvert_index_;
public:
VertexWeightWriteAttribute(MDeformVert *dverts, const int totvert, const int dvert_index)
: WriteAttribute(ATTR_DOMAIN_POINT, CPPType::get<float>(), totvert),
dverts_(dverts),
dvert_index_(dvert_index)
{
}
void get_internal(const int64_t index, void *r_value) const override
{
get_internal(dverts_, dvert_index_, index, r_value);
}
void set_internal(const int64_t index, const void *value) override
{
MDeformWeight *weight = BKE_defvert_ensure_index(&dverts_[index], dvert_index_);
weight->weight = *reinterpret_cast<const float *>(value);
}
static void get_internal(const MDeformVert *dverts,
const int dvert_index,
const int64_t index,
void *r_value)
{
if (dverts == nullptr) {
*(float *)r_value = 0.0f;
return;
}
const MDeformVert &dvert = dverts[index];
for (const MDeformWeight &weight : Span(dvert.dw, dvert.totweight)) {
if (weight.def_nr == dvert_index) {
*(float *)r_value = weight.weight;
return;
}
}
*(float *)r_value = 0.0f;
}
};
class VertexWeightReadAttribute final : public ReadAttribute {
private:
const MDeformVert *dverts_;
const int dvert_index_;
public:
VertexWeightReadAttribute(const MDeformVert *dverts, const int totvert, const int dvert_index)
: ReadAttribute(ATTR_DOMAIN_POINT, CPPType::get<float>(), totvert),
dverts_(dverts),
dvert_index_(dvert_index)
{
}
void get_internal(const int64_t index, void *r_value) const override
{
VertexWeightWriteAttribute::get_internal(dverts_, dvert_index_, index, r_value);
}
};
/**
* This provider makes vertex groups available as float attributes.
*/
class VertexGroupsAttributeProvider final : public DynamicAttributesProvider {
public:
ReadAttributePtr try_get_for_read(const GeometryComponent &component,
const StringRef attribute_name) const final
{
BLI_assert(component.type() == GeometryComponentType::Mesh);
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
const Mesh *mesh = mesh_component.get_for_read();
const int vertex_group_index = mesh_component.vertex_group_names().lookup_default_as(
attribute_name, -1);
if (vertex_group_index < 0) {
return {};
}
if (mesh == nullptr || mesh->dvert == nullptr) {
static const float default_value = 0.0f;
return std::make_unique<ConstantReadAttribute>(
ATTR_DOMAIN_POINT, mesh->totvert, CPPType::get<float>(), &default_value);
}
return std::make_unique<VertexWeightReadAttribute>(
mesh->dvert, mesh->totvert, vertex_group_index);
}
WriteAttributePtr try_get_for_write(GeometryComponent &component,
const StringRef attribute_name) const final
{
BLI_assert(component.type() == GeometryComponentType::Mesh);
MeshComponent &mesh_component = static_cast<MeshComponent &>(component);
Mesh *mesh = mesh_component.get_for_write();
if (mesh == nullptr) {
return {};
}
const int vertex_group_index = mesh_component.vertex_group_names().lookup_default_as(
attribute_name, -1);
if (vertex_group_index < 0) {
return {};
}
if (mesh->dvert == nullptr) {
BKE_object_defgroup_data_create(&mesh->id);
}
else {
/* Copy the data layer if it is shared with some other mesh. */
mesh->dvert = (MDeformVert *)CustomData_duplicate_referenced_layer(
&mesh->vdata, CD_MDEFORMVERT, mesh->totvert);
}
return std::make_unique<blender::bke::VertexWeightWriteAttribute>(
mesh->dvert, mesh->totvert, vertex_group_index);
}
bool try_delete(GeometryComponent &component, const StringRef attribute_name) const final
{
BLI_assert(component.type() == GeometryComponentType::Mesh);
MeshComponent &mesh_component = static_cast<MeshComponent &>(component);
const int vertex_group_index = mesh_component.vertex_group_names().pop_default_as(
attribute_name, -1);
if (vertex_group_index < 0) {
return false;
}
Mesh *mesh = mesh_component.get_for_write();
if (mesh == nullptr) {
return true;
}
if (mesh->dvert == nullptr) {
return true;
}
for (MDeformVert &dvert : MutableSpan(mesh->dvert, mesh->totvert)) {
MDeformWeight *weight = BKE_defvert_find_index(&dvert, vertex_group_index);
BKE_defvert_remove_group(&dvert, weight);
}
return true;
}
bool foreach_attribute(const GeometryComponent &component,
const AttributeForeachCallback callback) const final
{
BLI_assert(component.type() == GeometryComponentType::Mesh);
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
for (const auto item : mesh_component.vertex_group_names().items()) {
const StringRefNull name = item.key;
const int vertex_group_index = item.value;
if (vertex_group_index >= 0) {
AttributeMetaData meta_data{ATTR_DOMAIN_POINT, CD_PROP_FLOAT};
if (!callback(name, meta_data)) {
return false;
}
}
}
return true;
}
void supported_domains(Vector<AttributeDomain> &r_domains) const final
{
r_domains.append_non_duplicates(ATTR_DOMAIN_POINT);
}
};
/**
* In this function all the attribute providers for a mesh component are created. Most data in this
* function is statically allocated, because it does not change over time.
*/
static ComponentAttributeProviders create_attribute_providers_for_mesh()
{
static auto update_custom_data_pointers = [](GeometryComponent &component) {
Mesh *mesh = get_mesh_from_component_for_write(component);
if (mesh != nullptr) {
BKE_mesh_update_customdata_pointers(mesh, false);
}
};
#define MAKE_MUTABLE_CUSTOM_DATA_GETTER(NAME) \
[](GeometryComponent &component) -> CustomData * { \
Mesh *mesh = get_mesh_from_component_for_write(component); \
return mesh ? &mesh->NAME : nullptr; \
}
#define MAKE_CONST_CUSTOM_DATA_GETTER(NAME) \
[](const GeometryComponent &component) -> const CustomData * { \
const Mesh *mesh = get_mesh_from_component_for_read(component); \
return mesh ? &mesh->NAME : nullptr; \
}
static CustomDataAccessInfo corner_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(ldata),
MAKE_CONST_CUSTOM_DATA_GETTER(ldata),
update_custom_data_pointers};
static CustomDataAccessInfo point_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(vdata),
MAKE_CONST_CUSTOM_DATA_GETTER(vdata),
update_custom_data_pointers};
static CustomDataAccessInfo edge_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(edata),
MAKE_CONST_CUSTOM_DATA_GETTER(edata),
update_custom_data_pointers};
static CustomDataAccessInfo polygon_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(pdata),
MAKE_CONST_CUSTOM_DATA_GETTER(pdata),
update_custom_data_pointers};
#undef MAKE_CONST_CUSTOM_DATA_GETTER
#undef MAKE_MUTABLE_CUSTOM_DATA_GETTER
static BuiltinCustomDataLayerProvider position("position",
ATTR_DOMAIN_POINT,
CD_PROP_FLOAT3,
CD_MVERT,
BuiltinAttributeProvider::NonCreatable,
BuiltinAttributeProvider::Writable,
BuiltinAttributeProvider::NonDeletable,
point_access,
make_vertex_position_read_attribute,
make_vertex_position_write_attribute,
nullptr,
tag_normals_dirty_when_writing_position);
static BuiltinCustomDataLayerProvider material_index("material_index",
ATTR_DOMAIN_POLYGON,
CD_PROP_INT32,
CD_MPOLY,
BuiltinAttributeProvider::NonCreatable,
BuiltinAttributeProvider::Writable,
BuiltinAttributeProvider::NonDeletable,
polygon_access,
make_material_index_read_attribute,
make_material_index_write_attribute,
nullptr,
nullptr);
static BuiltinCustomDataLayerProvider shade_smooth("shade_smooth",
ATTR_DOMAIN_POLYGON,
CD_PROP_BOOL,
CD_MPOLY,
BuiltinAttributeProvider::NonCreatable,
BuiltinAttributeProvider::Writable,
BuiltinAttributeProvider::NonDeletable,
polygon_access,
make_shade_smooth_read_attribute,
make_shade_smooth_write_attribute,
nullptr,
nullptr);
static BuiltinCustomDataLayerProvider vertex_normal("vertex_normal",
ATTR_DOMAIN_POINT,
CD_PROP_FLOAT3,
CD_MVERT,
BuiltinAttributeProvider::NonCreatable,
BuiltinAttributeProvider::Readonly,
BuiltinAttributeProvider::NonDeletable,
point_access,
make_vertex_normal_read_attribute,
nullptr,
update_vertex_normals_when_dirty,
nullptr);
static NamedLegacyCustomDataProvider uvs(ATTR_DOMAIN_CORNER,
CD_PROP_FLOAT2,
CD_MLOOPUV,
corner_access,
make_uvs_read_attribute,
make_uvs_write_attribute);
static NamedLegacyCustomDataProvider vertex_colors(ATTR_DOMAIN_CORNER,
CD_PROP_COLOR,
CD_MLOOPCOL,
corner_access,
make_vertex_color_read_attribute,
make_vertex_color_write_attribute);
static VertexGroupsAttributeProvider vertex_groups;
static CustomDataAttributeProvider corner_custom_data(ATTR_DOMAIN_CORNER, corner_access);
static CustomDataAttributeProvider point_custom_data(ATTR_DOMAIN_POINT, point_access);
static CustomDataAttributeProvider edge_custom_data(ATTR_DOMAIN_EDGE, edge_access);
static CustomDataAttributeProvider polygon_custom_data(ATTR_DOMAIN_POLYGON, polygon_access);
return ComponentAttributeProviders({&position, &material_index, &vertex_normal, &shade_smooth},
{&uvs,
&vertex_colors,
&corner_custom_data,
&vertex_groups,
&point_custom_data,
&edge_custom_data,
&polygon_custom_data});
}
} // namespace blender::bke
const blender::bke::ComponentAttributeProviders *MeshComponent::get_attribute_providers() const
{
static blender::bke::ComponentAttributeProviders providers =
blender::bke::create_attribute_providers_for_mesh();
return &providers;
}
/** \} */
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