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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_FEATURES_H_
#define DAWNNATIVE_FEATURES_H_
#include <bitset>
#include <unordered_map>
#include <vector>
#include "dawn_native/DawnNative.h"
namespace dawn_native {
enum class Feature {
TextureCompressionBC,
TextureCompressionETC2,
TextureCompressionASTC,
ShaderFloat16,
PipelineStatisticsQuery,
TimestampQuery,
DepthClamping,
Depth24UnormStencil8,
Depth32FloatStencil8,
// Dawn-specific
DawnInternalUsages,
MultiPlanarFormats,
EnumCount,
InvalidEnum = EnumCount,
FeatureMin = TextureCompressionBC,
};
// A wrapper of the bitset to store if an feature is enabled or not. This wrapper provides the
// convenience to convert the enums of enum class Feature to the indices of a bitset.
struct FeaturesSet {
std::bitset<static_cast<size_t>(Feature::EnumCount)> featuresBitSet;
void EnableFeature(Feature feature);
bool IsEnabled(Feature feature) const;
std::vector<const char*> GetEnabledFeatureNames() const;
void InitializeDeviceProperties(WGPUDeviceProperties* properties) const;
};
const char* FeatureEnumToName(Feature feature);
class FeaturesInfo {
public:
FeaturesInfo();
// Used to query the details of an feature. Return nullptr if featureName is not a valid
// name of an feature supported in Dawn
const FeatureInfo* GetFeatureInfo(const char* featureName) const;
Feature FeatureNameToEnum(const char* featureName) const;
FeaturesSet FeatureNamesToFeaturesSet(
const std::vector<const char*>& requiredFeatures) const;
private:
std::unordered_map<std::string, Feature> mFeatureNameToEnumMap;
};
} // namespace dawn_native
#endif // DAWNNATIVE_FEATURES_H_