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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_GPU_SUPPORTED_FEATURES_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_GPU_SUPPORTED_FEATURES_H_
#include <bitset>
#include "third_party/blink/renderer/bindings/core/v8/iterable.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_gpu_feature_name.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_sync_iterator_gpu_supported_features.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/graphics/gpu/webgpu_cpp.h"
#include "third_party/blink/renderer/platform/wtf/hash_set.h"
namespace blink {
class GPUSupportedFeatures : public ScriptWrappable,
public ValueSyncIterable<GPUSupportedFeatures> {
DEFINE_WRAPPERTYPEINFO();
public:
static std::optional<V8GPUFeatureName::Enum> ToV8FeatureNameEnum(
wgpu::FeatureName f);
GPUSupportedFeatures();
explicit GPUSupportedFeatures(
const wgpu::SupportedFeatures& supported_features);
void AddFeatureName(const V8GPUFeatureName feature_name);
const HashSet<String>& FeatureNameSet() const { return features_; }
// Fast path, it allows to avoid hash computation from string for
// checking features.
bool Has(const V8GPUFeatureName::Enum feature) const;
// gpu_supported_features.idl {{{
bool hasForBinding(ScriptState* script_state,
const String& feature,
ExceptionState& exception_state) const;
unsigned size() const { return features_.size(); }
// }}} End of WebIDL binding implementation.
private:
HashSet<String> features_;
// For fast path. Make a copy that is synched with features_ to allow
// checking features with bitset test by V8GPUFeatureName::Enum.
std::bitset<V8GPUFeatureName::kEnumSize> features_bitset_;
class IterationSource final
: public ValueSyncIterable<GPUSupportedFeatures>::IterationSource {
public:
explicit IterationSource(const HashSet<String>& features);
bool FetchNextItem(ScriptState* script_state,
String& value,
ExceptionState& exception_state) override;
private:
HashSet<String> features_;
HashSet<String>::iterator iter_;
};
// Starts iteration over the Setlike.
// Needed for ValueSyncIterable to work properly.
GPUSupportedFeatures::IterationSource* CreateIterationSource(
ScriptState* script_state,
ExceptionState& exception_state) override {
return MakeGarbageCollected<GPUSupportedFeatures::IterationSource>(
features_);
}
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_GPU_SUPPORTED_FEATURES_H_
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