| // Copyright 2023 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_IR_SWIZZLE_H_ |
| #define SRC_TINT_IR_SWIZZLE_H_ |
| |
| #include "src/tint/ir/operand_instruction.h" |
| #include "src/tint/utils/castable.h" |
| |
| namespace tint::ir { |
| |
| /// A swizzle instruction in the IR. |
| class Swizzle : public utils::Castable<Swizzle, OperandInstruction<1, 1>> { |
| public: |
| /// The offset in Operands() for the object being swizzled |
| static constexpr size_t kObjectOperandOffset = 0; |
| |
| /// Constructor |
| /// @param result the result value |
| /// @param object the object being swizzled |
| /// @param indices the indices to swizzle |
| Swizzle(InstructionResult* result, Value* object, utils::VectorRef<uint32_t> indices); |
| ~Swizzle() override; |
| |
| /// @returns the object used for the access |
| Value* Object() { return operands_[kObjectOperandOffset]; } |
| |
| /// @returns the swizzle indices |
| utils::VectorRef<uint32_t> Indices() { return indices_; } |
| |
| private: |
| utils::Vector<uint32_t, 4> indices_; |
| }; |
| |
| } // namespace tint::ir |
| |
| #endif // SRC_TINT_IR_SWIZZLE_H_ |