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// 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_AST_STORAGE_CLASS_H_
#define SRC_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,
kImage,
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_AST_STORAGE_CLASS_H_