// Copyright 2019 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
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//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
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#ifndef SRC_DAWN_NATIVE_FEATURES_H_
#define SRC_DAWN_NATIVE_FEATURES_H_

#include <bitset>
#include <string>
#include <vector>

#include "dawn/common/ityp_bitset.h"
#include "dawn/native/DawnNative.h"
#include "dawn/native/Features_autogen.h"
#include "dawn/webgpu_cpp.h"

namespace dawn::native {

enum class FeatureLevel { Compatibility, Core };

extern const ityp::array<Feature, FeatureInfo, kEnumCount<Feature>> kFeatureNameAndInfoList;

wgpu::FeatureName ToAPI(Feature feature);
Feature FromAPI(wgpu::FeatureName feature);

// 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 {
    ityp::bitset<Feature, kEnumCount<Feature>> featuresBitSet;

    void EnableFeature(Feature feature);
    void EnableFeature(wgpu::FeatureName feature);
    bool IsEnabled(Feature feature) const;
    bool IsEnabled(wgpu::FeatureName feature) const;
    // Returns |count|, the number of features. Writes out all |count| values if |features| is
    // non-null.
    size_t EnumerateFeatures(wgpu::FeatureName* features) const;
    std::vector<const char*> GetEnabledFeatureNames() const;
};

}  // namespace dawn::native

#endif  // SRC_DAWN_NATIVE_FEATURES_H_