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// Copyright 2019 The Chromium Authors. All rights reserved.
// 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_DAWN_OBJECT_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_DAWN_OBJECT_H_
#include <dawn/dawn_proc_table.h>
#include <dawn/webgpu.h>
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/graphics/gpu/dawn_control_client_holder.h"
namespace gpu {
namespace webgpu {
class WebGPUInterface;
} // namespace webgpu
} // namespace gpu
namespace blink {
class GPUDevice;
class Visitor;
// This class allows objects to hold onto a DawnControlClientHolder.
// The DawnControlClientHolder is used to hold the WebGPUInterface and keep
// track of whether or not the client has been destroyed. If the client is
// destroyed, we should not call any Dawn functions.
class DawnObjectBase {
public:
explicit DawnObjectBase(
scoped_refptr<DawnControlClientHolder> dawn_control_client);
const scoped_refptr<DawnControlClientHolder>& GetDawnControlClient() const;
bool IsDawnControlClientDestroyed() const;
gpu::webgpu::WebGPUInterface* GetInterface() const;
const DawnProcTable& GetProcs() const;
private:
scoped_refptr<DawnControlClientHolder> dawn_control_client_;
};
// This class allows objects to hold onto a DawnControlClientHolder and a
// device client id. Now one GPUDevice is related to one WebGPUSerializer in
// the client side of WebGPU context. When the GPUDevice and all the other
// WebGPU objects that are created from the GPUDevice are destroyed, this
// object will be destroyed and in the destructor of this object we will
// trigger the clean-ups to the corresponding WebGPUSerailzer and other data
// structures in the GPU process.
class DawnDeviceClientSerializerHolder
: public RefCounted<DawnDeviceClientSerializerHolder> {
public:
DawnDeviceClientSerializerHolder(
scoped_refptr<DawnControlClientHolder> dawn_control_client,
uint64_t device_client_id);
private:
friend class RefCounted<DawnDeviceClientSerializerHolder>;
friend class DeviceTreeObject;
~DawnDeviceClientSerializerHolder();
scoped_refptr<DawnControlClientHolder> dawn_control_client_;
uint64_t device_client_id_;
};
// This class is the parent of GPUDevice and all the WebGPU objects that are
// created from a GPUDevice, which holds a
// scoped_refptr<DawnDeviceClientSerializerHolder> and provides functions to
// access all the members inside it. When a GPUDevice and all the WebGPU
// objects created from it are destroyed, the refcount of
// DawnDeviceClientSerializerHolder will become 0 and the clean-ups to the
// corresponding WebGPUSerailzer and other data structures in the GPU process
// will be triggered.
class DeviceTreeObject {
public:
explicit DeviceTreeObject(scoped_refptr<DawnDeviceClientSerializerHolder>
device_client_seralizer_holder)
: device_client_serializer_holder_(
std::move(device_client_seralizer_holder)) {}
const scoped_refptr<DawnControlClientHolder>& GetDawnControlClient() const;
bool IsDawnControlClientDestroyed() const;
gpu::webgpu::WebGPUInterface* GetInterface() const;
const DawnProcTable& GetProcs() const;
uint64_t GetDeviceClientID() const;
// Ensure commands up until now on this object's parent device are flushed by
// the end of the task.
void EnsureFlush();
// Flush commands up until now on this object's parent device immediately.
void FlushNow();
protected:
scoped_refptr<DawnDeviceClientSerializerHolder>
device_client_serializer_holder_;
};
class DawnObjectImpl : public ScriptWrappable, public DeviceTreeObject {
public:
explicit DawnObjectImpl(GPUDevice* device);
~DawnObjectImpl() override;
void Trace(Visitor* visitor) const override;
protected:
Member<GPUDevice> device_;
};
template <typename Handle>
class DawnObject : public DawnObjectImpl {
public:
DawnObject(GPUDevice* device, Handle handle)
: DawnObjectImpl(device), handle_(handle) {}
~DawnObject() override = default;
Handle GetHandle() const { return handle_; }
private:
Handle const handle_;
};
template <>
class DawnObject<WGPUDevice> : public DeviceTreeObject {
public:
DawnObject(scoped_refptr<DawnControlClientHolder> dawn_control_client,
uint64_t device_client_id,
WGPUDevice handle)
: DeviceTreeObject(base::MakeRefCounted<DawnDeviceClientSerializerHolder>(
std::move(dawn_control_client),
device_client_id)),
handle_(handle) {}
WGPUDevice GetHandle() const { return handle_; }
const scoped_refptr<DawnDeviceClientSerializerHolder>&
GetDeviceClientSerializerHolder() const {
return device_client_serializer_holder_;
}
private:
WGPUDevice const handle_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_DAWN_OBJECT_H_
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