src/dawn/node/binding/GPUAdapter.h

// Copyright 2021 The Dawn & Tint Authors
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#ifndef SRC_DAWN_NODE_BINDING_GPUADAPTER_H_
#define SRC_DAWN_NODE_BINDING_GPUADAPTER_H_

#include <memory>

#include "dawn/native/DawnNative.h"
#include "dawn/webgpu_cpp.h"
#include "src/dawn/node/binding/AsyncRunner.h"
#include "src/dawn/node/interop/NodeAPI.h"
#include "src/dawn/node/interop/WebGPU.h"

namespace wgpu::binding {
class Flags;

// GPUAdapter is an implementation of interop::GPUAdapter that wraps a dawn::native::Adapter.
class GPUAdapter final : public interop::GPUAdapter {
  public:
    GPUAdapter(dawn::native::Adapter a, const Flags& flags, std::shared_ptr<AsyncRunner> async);

    // interop::GPUAdapter interface compliance
    interop::Promise<interop::Interface<interop::GPUDevice>> requestDevice(
        Napi::Env env,
        interop::GPUDeviceDescriptor descriptor) override;
    interop::Promise<interop::Interface<interop::GPUAdapterInfo>> requestAdapterInfo(
        Napi::Env) override;
    interop::Interface<interop::GPUSupportedFeatures> getFeatures(Napi::Env) override;
    interop::Interface<interop::GPUSupportedLimits> getLimits(Napi::Env) override;
    bool getIsFallbackAdapter(Napi::Env) override;
    bool getIsCompatibilityMode(Napi::Env) override;

  private:
    dawn::native::Adapter adapter_;
    const Flags& flags_;
    std::shared_ptr<AsyncRunner> async_;

    // The adapter becomes invalid after the first successful requestDevice and all subsequent
    // requestDevice calls will return an already lost device.
    bool valid_ = true;
};

}  // namespace wgpu::binding

#endif  // SRC_DAWN_NODE_BINDING_GPUADAPTER_H_