| // Copyright 2021 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_BINDING_REMAPPER_H_ |
| #define SRC_TINT_TRANSFORM_BINDING_REMAPPER_H_ |
| |
| #include <unordered_map> |
| |
| #include "src/tint/ast/access.h" |
| #include "src/tint/sem/binding_point.h" |
| #include "src/tint/transform/transform.h" |
| |
| namespace tint::transform { |
| |
| /// BindingPoint is an alias to sem::BindingPoint |
| using BindingPoint = sem::BindingPoint; |
| |
| /// BindingRemapper is a transform used to remap resource binding points and |
| /// access controls. |
| class BindingRemapper final : public Castable<BindingRemapper, Transform> { |
| public: |
| /// BindingPoints is a map of old binding point to new binding point |
| using BindingPoints = std::unordered_map<BindingPoint, BindingPoint>; |
| |
| /// AccessControls is a map of old binding point to new access control |
| using AccessControls = std::unordered_map<BindingPoint, ast::Access>; |
| |
| /// Remappings is consumed by the BindingRemapper transform. |
| /// Data holds information about shader usage and constant buffer offsets. |
| struct Remappings final : public Castable<Data, transform::Data> { |
| /// Constructor |
| /// @param bp a map of new binding points |
| /// @param ac a map of new access controls |
| /// @param may_collide If true, then validation will be disabled for |
| /// binding point collisions generated by this transform |
| Remappings(BindingPoints bp, AccessControls ac, bool may_collide = true); |
| |
| /// Copy constructor |
| Remappings(const Remappings&); |
| |
| /// Destructor |
| ~Remappings() override; |
| |
| /// A map of old binding point to new binding point |
| const BindingPoints binding_points; |
| |
| /// A map of old binding point to new access controls |
| const AccessControls access_controls; |
| |
| /// If true, then validation will be disabled for binding point collisions |
| /// generated by this transform |
| const bool allow_collisions; |
| }; |
| |
| /// Constructor |
| BindingRemapper(); |
| ~BindingRemapper() 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_BINDING_REMAPPER_H_ |