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// Copyright 2019 The Dawn 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 DAWNNATIVE_EXTENSIONS_H_
#define DAWNNATIVE_EXTENSIONS_H_
#include <bitset>
#include <unordered_map>
#include <vector>
#include "dawn_native/DawnNative.h"
namespace dawn_native {
enum class Extension {
TextureCompressionBC,
EnumCount,
InvalidEnum = EnumCount,
ExtensionMin = TextureCompressionBC,
};
// A wrapper of the bitset to store if an extension is enabled or not. This wrapper provides the
// convenience to convert the enums of enum class Extension to the indices of a bitset.
struct ExtensionsSet {
std::bitset<static_cast<size_t>(Extension::EnumCount)> extensionsBitSet;
void EnableExtension(Extension extension);
bool IsEnabled(Extension extension) const;
std::vector<const char*> GetEnabledExtensionNames() const;
};
const char* ExtensionEnumToName(Extension extension);
class ExtensionsInfo {
public:
ExtensionsInfo();
// Used to query the details of an extension. Return nullptr if extensionName is not a valid
// name of an extension supported in Dawn
const ExtensionInfo* GetExtensionInfo(const char* extensionName) const;
Extension ExtensionNameToEnum(const char* extensionName) const;
ExtensionsSet ExtensionNamesToExtensionsSet(
const std::vector<const char*>& requiredExtensions) const;
private:
std::unordered_map<std::string, Extension> mExtensionNameToEnumMap;
};
} // namespace dawn_native
#endif // DAWNNATIVE_EXTENSIONS_H_
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