| // Copyright 2022 The Tint Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef SRC_TINT_TRANSFORM_SUBSTITUTE_OVERRIDE_H_ |
| #define SRC_TINT_TRANSFORM_SUBSTITUTE_OVERRIDE_H_ |
| |
| #include <string> |
| #include <unordered_map> |
| |
| #include "tint/override_id.h" |
| |
| #include "src/tint/transform/transform.h" |
| |
| namespace tint::transform { |
| |
| /// A transform that replaces overrides with the constant values provided. |
| /// |
| /// # Example |
| /// ``` |
| /// override width: f32; |
| /// @id(1) override height: i32 = 4; |
| /// override depth = 1i; |
| /// ``` |
| /// |
| /// When transformed with `width` -> 1, `1` -> 22, `depth` -> 42 |
| /// |
| /// ``` |
| /// const width: f32 = 1f; |
| /// const height: i32 = 22i; |
| /// const depth = 42i; |
| /// ``` |
| /// |
| /// @see crbug.com/tint/1582 |
| class SubstituteOverride final : public Castable<SubstituteOverride, Transform> { |
| public: |
| /// Configuration options for the transform |
| struct Config final : public Castable<Config, Data> { |
| /// Constructor |
| Config(); |
| |
| /// Copy constructor |
| Config(const Config&); |
| |
| /// Destructor |
| ~Config() override; |
| |
| /// Assignment operator |
| /// @returns this Config |
| Config& operator=(const Config&); |
| |
| /// The map of override identifier to the override value. |
| /// The value is always a double coming into the transform and will be |
| /// converted to the correct type through and initializer. |
| std::unordered_map<OverrideId, double> map; |
| }; |
| |
| /// Constructor |
| SubstituteOverride(); |
| |
| /// Destructor |
| ~SubstituteOverride() override; |
| |
| /// @param program the program to inspect |
| /// @param data optional extra transform-specific input data |
| /// @returns true if this transform should be run for the given program |
| bool ShouldRun(const Program* program, const DataMap& data = {}) const override; |
| |
| protected: |
| /// Runs the transform using the CloneContext built for transforming a |
| /// program. Run() is responsible for calling Clone() on the CloneContext. |
| /// @param ctx the CloneContext primed with the input program and |
| /// ProgramBuilder |
| /// @param inputs optional extra transform-specific input data |
| /// @param outputs optional extra transform-specific output data |
| void Run(CloneContext& ctx, const DataMap& inputs, DataMap& outputs) const override; |
| }; |
| |
| } // namespace tint::transform |
| |
| #endif // SRC_TINT_TRANSFORM_SUBSTITUTE_OVERRIDE_H_ |