| // Copyright 2020 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_AST_STORAGE_CLASS_H_ |
| #define SRC_TINT_AST_STORAGE_CLASS_H_ |
| |
| #include <ostream> |
| |
| namespace tint { |
| namespace ast { |
| |
| /// Storage class of a given pointer. |
| enum class StorageClass { |
| kInvalid = -1, |
| kNone, |
| kInput, |
| kOutput, |
| kUniform, |
| kWorkgroup, |
| kUniformConstant, |
| kStorage, |
| kPrivate, |
| kFunction |
| }; |
| |
| /// @returns true if the StorageClass is host-shareable |
| /// @param sc the StorageClass |
| /// @see https://gpuweb.github.io/gpuweb/wgsl.html#host-shareable |
| inline bool IsHostShareable(StorageClass sc) { |
| return sc == ast::StorageClass::kUniform || sc == ast::StorageClass::kStorage; |
| } |
| |
| /// @param sc the StorageClass |
| /// @return the name of the given storage class |
| const char* ToString(StorageClass sc); |
| |
| /// @param out the std::ostream to write to |
| /// @param sc the StorageClass |
| /// @return the std::ostream so calls can be chained |
| std::ostream& operator<<(std::ostream& out, StorageClass sc); |
| |
| } // namespace ast |
| } // namespace tint |
| |
| #endif // SRC_TINT_AST_STORAGE_CLASS_H_ |