diff options
Diffstat (limited to 'source/blender/functions/FN_field.hh')
| -rw-r--r-- | source/blender/functions/FN_field.hh | 129 |
1 files changed, 93 insertions, 36 deletions
diff --git a/source/blender/functions/FN_field.hh b/source/blender/functions/FN_field.hh index 5e0302130af..28bb120bb17 100644 --- a/source/blender/functions/FN_field.hh +++ b/source/blender/functions/FN_field.hh @@ -178,11 +178,19 @@ class GFieldRef : public GFieldBase<const FieldNode *> { } }; +namespace detail { +/* Utility class to make #is_field_v work. */ +struct TypedFieldBase { +}; +} // namespace detail + /** * A typed version of #GField. It has the same memory layout as #GField. */ -template<typename T> class Field : public GField { +template<typename T> class Field : public GField, detail::TypedFieldBase { public: + using base_type = T; + Field() = default; Field(GField field) : GField(std::move(field)) @@ -196,6 +204,11 @@ template<typename T> class Field : public GField { } }; +/** True when T is any Field<...> type. */ +template<typename T> +static constexpr bool is_field_v = std::is_base_of_v<detail::TypedFieldBase, T> && + !std::is_same_v<detail::TypedFieldBase, T>; + /** * A #FieldNode that allows composing existing fields into new fields. */ @@ -248,9 +261,9 @@ class FieldInput : public FieldNode { * Get the value of this specific input based on the given context. The returned virtual array, * should live at least as long as the passed in #scope. May return null. */ - virtual const GVArray *get_varray_for_context(const FieldContext &context, - IndexMask mask, - ResourceScope &scope) const = 0; + virtual GVArray get_varray_for_context(const FieldContext &context, + IndexMask mask, + ResourceScope &scope) const = 0; virtual std::string socket_inspection_name() const; blender::StringRef debug_name() const; @@ -268,9 +281,9 @@ class FieldContext { public: ~FieldContext() = default; - virtual const GVArray *get_varray_for_input(const FieldInput &field_input, - IndexMask mask, - ResourceScope &scope) const; + virtual GVArray get_varray_for_input(const FieldInput &field_input, + IndexMask mask, + ResourceScope &scope) const; }; /** @@ -289,8 +302,8 @@ class FieldEvaluator : NonMovable, NonCopyable { const FieldContext &context_; const IndexMask mask_; Vector<GField> fields_to_evaluate_; - Vector<GVMutableArray *> dst_varrays_; - Vector<const GVArray *> evaluated_varrays_; + Vector<GVMutableArray> dst_varrays_; + Vector<GVArray> evaluated_varrays_; Vector<OutputPointerInfo> output_pointer_infos_; bool is_evaluated_ = false; @@ -317,13 +330,12 @@ class FieldEvaluator : NonMovable, NonCopyable { * \param field: Field to add to the evaluator. * \param dst: Mutable virtual array that the evaluated result for this field is be written into. */ - int add_with_destination(GField field, GVMutableArray &dst); + int add_with_destination(GField field, GVMutableArray dst); /** Same as #add_with_destination but typed. */ - template<typename T> int add_with_destination(Field<T> field, VMutableArray<T> &dst) + template<typename T> int add_with_destination(Field<T> field, VMutableArray<T> dst) { - GVMutableArray &varray = scope_.construct<GVMutableArray_For_VMutableArray<T>>(dst); - return this->add_with_destination(GField(std::move(field)), varray); + return this->add_with_destination(GField(std::move(field)), GVMutableArray(std::move(dst))); } /** @@ -342,11 +354,10 @@ class FieldEvaluator : NonMovable, NonCopyable { */ template<typename T> int add_with_destination(Field<T> field, MutableSpan<T> dst) { - GVMutableArray &varray = scope_.construct<GVMutableArray_For_MutableSpan<T>>(dst); - return this->add_with_destination(std::move(field), varray); + return this->add_with_destination(std::move(field), VMutableArray<T>::ForSpan(dst)); } - int add(GField field, const GVArray **varray_ptr); + int add(GField field, GVArray *varray_ptr); /** * \param field: Field to add to the evaluator. @@ -354,14 +365,14 @@ class FieldEvaluator : NonMovable, NonCopyable { * assigned to the given position. * \return Index of the field in the evaluator which can be used in the #get_evaluated methods. */ - template<typename T> int add(Field<T> field, const VArray<T> **varray_ptr) + template<typename T> int add(Field<T> field, VArray<T> *varray_ptr) { const int field_index = fields_to_evaluate_.append_and_get_index(std::move(field)); - dst_varrays_.append(nullptr); - output_pointer_infos_.append( - OutputPointerInfo{varray_ptr, [](void *dst, const GVArray &varray, ResourceScope &scope) { - *(const VArray<T> **)dst = &*scope.construct<GVArray_Typed<T>>(varray); - }}); + dst_varrays_.append({}); + output_pointer_infos_.append(OutputPointerInfo{ + varray_ptr, [](void *dst, const GVArray &varray, ResourceScope &UNUSED(scope)) { + *(VArray<T> *)dst = varray.typed<T>(); + }}); return field_index; } @@ -378,14 +389,12 @@ class FieldEvaluator : NonMovable, NonCopyable { const GVArray &get_evaluated(const int field_index) const { BLI_assert(is_evaluated_); - return *evaluated_varrays_[field_index]; + return evaluated_varrays_[field_index]; } - template<typename T> const VArray<T> &get_evaluated(const int field_index) + template<typename T> VArray<T> get_evaluated(const int field_index) { - const GVArray &varray = this->get_evaluated(field_index); - GVArray_Typed<T> &typed_varray = scope_.construct<GVArray_Typed<T>>(varray); - return *typed_varray; + return this->get_evaluated(field_index).typed<T>(); } /** @@ -396,11 +405,11 @@ class FieldEvaluator : NonMovable, NonCopyable { IndexMask get_evaluated_as_mask(const int field_index); }; -Vector<const GVArray *> evaluate_fields(ResourceScope &scope, - Span<GFieldRef> fields_to_evaluate, - IndexMask mask, - const FieldContext &context, - Span<GVMutableArray *> dst_varrays = {}); +Vector<GVArray> evaluate_fields(ResourceScope &scope, + Span<GFieldRef> fields_to_evaluate, + IndexMask mask, + const FieldContext &context, + Span<GVMutableArray> dst_varrays = {}); /* -------------------------------------------------------------------- */ /** \name Utility functions for simple field creation and evaluation @@ -423,17 +432,19 @@ template<typename T> Field<T> make_constant_field(T value) return Field<T>{GField{std::move(operation), 0}}; } +GField make_constant_field(const CPPType &type, const void *value); + GField make_field_constant_if_possible(GField field); class IndexFieldInput final : public FieldInput { public: IndexFieldInput(); - static GVArray *get_index_varray(IndexMask mask, ResourceScope &scope); + static GVArray get_index_varray(IndexMask mask, ResourceScope &scope); - const GVArray *get_varray_for_context(const FieldContext &context, - IndexMask mask, - ResourceScope &scope) const final; + GVArray get_varray_for_context(const FieldContext &context, + IndexMask mask, + ResourceScope &scope) const final; uint64_t hash() const override; bool is_equal_to(const fn::FieldNode &other) const override; @@ -442,6 +453,52 @@ class IndexFieldInput final : public FieldInput { /** \} */ /* -------------------------------------------------------------------- */ +/** \name Value or Field Class + * + * Utility class that wraps a single value and a field, to simplify accessing both of the types. + * \{ */ + +template<typename T> struct ValueOrField { + /** Value that is used when the field is empty. */ + T value{}; + Field<T> field; + + ValueOrField() = default; + + ValueOrField(T value) : value(std::move(value)) + { + } + + ValueOrField(Field<T> field) : field(std::move(field)) + { + } + + bool is_field() const + { + return (bool)this->field; + } + + Field<T> as_field() const + { + if (this->field) { + return this->field; + } + return make_constant_field(this->value); + } + + T as_value() const + { + if (this->field) { + /* This returns a default value when the field is not constant. */ + return evaluate_constant_field(this->field); + } + return this->value; + } +}; + +/** \} */ + +/* -------------------------------------------------------------------- */ /** \name #FieldNode Inline Methods * \{ */ |