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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_TINT_SEM_STORAGE_TEXTURE_H_
#define SRC_TINT_SEM_STORAGE_TEXTURE_H_
#include <string>
#include "src/tint/ast/access.h"
#include "src/tint/ast/storage_texture.h"
#include "src/tint/sem/texture.h"
// Forward declarations
namespace tint::sem {
class Manager;
} // namespace tint::sem
namespace tint::sem {
/// A storage texture type.
class StorageTexture final : public Castable<StorageTexture, Texture> {
public:
/// Constructor
/// @param dim the dimensionality of the texture
/// @param format the texel format of the texture
/// @param access the access control type of the texture
/// @param subtype the storage subtype. Use SubtypeFor() to calculate this.
StorageTexture(ast::TextureDimension dim,
ast::TexelFormat format,
ast::Access access,
sem::Type* subtype);
/// Move constructor
StorageTexture(StorageTexture&&);
~StorageTexture() override;
/// @returns a hash of the type.
size_t Hash() const override;
/// @param other the other type to compare against
/// @returns true if the this type is equal to the given type
bool Equals(const Type& other) const override;
/// @returns the storage subtype
Type* type() const { return subtype_; }
/// @returns the texel format
ast::TexelFormat texel_format() const { return texel_format_; }
/// @returns the access control
ast::Access access() const { return access_; }
/// @param symbols the program's symbol table
/// @returns the name for this type that closely resembles how it would be
/// declared in WGSL.
std::string FriendlyName(const SymbolTable& symbols) const override;
/// @param format the storage texture image format
/// @param type_mgr the sem::Manager used to build the returned type
/// @returns the storage texture subtype for the given TexelFormat
static sem::Type* SubtypeFor(ast::TexelFormat format, sem::Manager& type_mgr);
private:
ast::TexelFormat const texel_format_;
ast::Access const access_;
Type* const subtype_;
};
} // namespace tint::sem
#endif // SRC_TINT_SEM_STORAGE_TEXTURE_H_