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/*
* Copyright (c) 2021-2023 Apple Inc. All rights reserved.
*
* 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.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#import <WebGPU/WebGPU.h>
#import <WebGPU/WebGPUExt.h>
#import <wtf/CompletionHandler.h>
#import <wtf/Deque.h>
#import <wtf/FastMalloc.h>
#import <wtf/Lock.h>
#import <wtf/MachSendRight.h>
#import <wtf/Ref.h>
#import <wtf/TZoneMalloc.h>
#import <wtf/ThreadSafeRefCounted.h>
#import <wtf/ThreadSafetyAnalysis.h>
#import <wtf/WeakObjCPtr.h>
#import <wtf/WeakPtr.h>
struct WGPUInstanceImpl {
};
namespace WTF {
class MachSendRight;
}
namespace WebGPU {
class Adapter;
class DDMesh;
class Device;
class PresentationContext;
class Texture;
// https://gpuweb.github.io/gpuweb/#gpu
class Instance : public WGPUInstanceImpl, public ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr<Instance> {
WTF_MAKE_TZONE_ALLOCATED(Instance);
public:
static Ref<Instance> create(const WGPUInstanceDescriptor&);
static Ref<Instance> createInvalid()
{
return adoptRef(*new Instance());
}
virtual ~Instance();
Ref<PresentationContext> createSurface(const WGPUSurfaceDescriptor&);
void processEvents();
void requestAdapter(const WGPURequestAdapterOptions&, CompletionHandler<void(WGPURequestAdapterStatus, Ref<Adapter>&&, String&&)>&& callback);
bool isValid() const { return m_isValid; }
void retainDevice(Device&, id<MTLCommandBuffer>);
// This can be called on a background thread.
using WorkItem = Function<void()>;
void scheduleWork(WorkItem&&);
const std::optional<const MachSendRight>& webProcessID() const;
Ref<DDMesh> createModelBacking(const WGPUDDCreateMeshDescriptor&);
id<MTLDevice> device() const;
private:
Instance(WGPUScheduleWorkBlock, const WTF::MachSendRight* webProcessResourceOwner);
explicit Instance();
// This can be called on a background thread.
void defaultScheduleWork(WGPUWorkItem&&);
// This can be used on a background thread.
Deque<WGPUWorkItem> m_pendingWork WTF_GUARDED_BY_LOCK(m_lock);
using CommandBufferContainer = Vector<WeakObjCPtr<id<MTLCommandBuffer>>>;
HashMap<RefPtr<Device>, CommandBufferContainer> retainedDeviceInstances WTF_GUARDED_BY_LOCK(m_lock);
const std::optional<const MachSendRight> m_webProcessID;
const WGPUScheduleWorkBlock m_scheduleWorkBlock;
Lock m_lock;
bool m_isValid { true };
};
} // namespace WebGPU
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