зеркало из https://github.com/mozilla/gecko-dev.git
81 строка
2.2 KiB
C++
81 строка
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef GPU_BUFFER_H_
|
|
#define GPU_BUFFER_H_
|
|
|
|
#include "js/RootingAPI.h"
|
|
#include "mozilla/dom/Nullable.h"
|
|
#include "mozilla/ipc/Shmem.h"
|
|
#include "mozilla/webgpu/WebGPUTypes.h"
|
|
#include "nsTArray.h"
|
|
#include "ObjectModel.h"
|
|
|
|
namespace mozilla {
|
|
class ErrorResult;
|
|
|
|
namespace dom {
|
|
template <typename T>
|
|
class Optional;
|
|
}
|
|
|
|
namespace ipc {
|
|
class Shmem;
|
|
} // namespace ipc
|
|
namespace webgpu {
|
|
|
|
class Device;
|
|
|
|
struct MappedInfo {
|
|
ipc::Shmem mShmem;
|
|
// True if mapping is requested for writing.
|
|
bool mWritable = false;
|
|
// Populated by `GetMappedRange`.
|
|
nsTArray<JS::Heap<JSObject*>> mArrayBuffers;
|
|
|
|
MappedInfo() = default;
|
|
MappedInfo(const MappedInfo&) = delete;
|
|
bool IsReady() const { return mShmem.IsReadable(); }
|
|
};
|
|
|
|
class Buffer final : public ObjectBase, public ChildOf<Device> {
|
|
public:
|
|
GPU_DECL_CYCLE_COLLECTION(Buffer)
|
|
GPU_DECL_JS_WRAP(Buffer)
|
|
|
|
Buffer(Device* const aParent, RawId aId, BufferAddress aSize, bool aMappable);
|
|
void SetMapped(ipc::Shmem&& aShmem, bool aWritable);
|
|
|
|
const RawId mId;
|
|
|
|
private:
|
|
virtual ~Buffer();
|
|
void Cleanup();
|
|
|
|
// Note: we can't map a buffer with the size that don't fit into `size_t`
|
|
// (which may be smaller than `BufferAddress`), but general not all buffers
|
|
// are mapped.
|
|
const BufferAddress mSize;
|
|
const bool mMappable;
|
|
nsString mLabel;
|
|
// Information about the currently active mapping.
|
|
Maybe<MappedInfo> mMapped;
|
|
|
|
public:
|
|
already_AddRefed<dom::Promise> MapAsync(uint32_t aMode, uint64_t aOffset,
|
|
const dom::Optional<uint64_t>& aSize,
|
|
ErrorResult& aRv);
|
|
void GetMappedRange(JSContext* aCx, uint64_t aOffset,
|
|
const dom::Optional<uint64_t>& aSize,
|
|
JS::Rooted<JSObject*>* aObject, ErrorResult& aRv);
|
|
void Unmap(JSContext* aCx, ErrorResult& aRv);
|
|
void Destroy();
|
|
};
|
|
|
|
} // namespace webgpu
|
|
} // namespace mozilla
|
|
|
|
#endif // GPU_BUFFER_H_
|