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5d846ab503
But keep a namespace alias to avoid breaking project that depend on the previous namespace name while they get updated. Bug: dawn:824 Change-Id: I1e99c4d0d2acf7644a225a88d07806d1a64478e6 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/75540 Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Corentin Wallez <cwallez@chromium.org>
110 lines
3.8 KiB
C++
110 lines
3.8 KiB
C++
// Copyright 2019 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef DAWNWIRE_CLIENT_BUFFER_H_
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#define DAWNWIRE_CLIENT_BUFFER_H_
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#include <dawn/webgpu.h>
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#include "dawn_wire/WireClient.h"
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#include "dawn_wire/client/ObjectBase.h"
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#include "dawn_wire/client/RequestTracker.h"
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namespace dawn::wire::client {
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class Device;
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class Buffer final : public ObjectBase {
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public:
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using ObjectBase::ObjectBase;
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static WGPUBuffer Create(Device* device, const WGPUBufferDescriptor* descriptor);
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static WGPUBuffer CreateError(Device* device);
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~Buffer();
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bool OnMapAsyncCallback(uint64_t requestSerial,
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uint32_t status,
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uint64_t readDataUpdateInfoLength,
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const uint8_t* readDataUpdateInfo);
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void MapAsync(WGPUMapModeFlags mode,
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size_t offset,
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size_t size,
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WGPUBufferMapCallback callback,
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void* userdata);
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void* GetMappedRange(size_t offset, size_t size);
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const void* GetConstMappedRange(size_t offset, size_t size);
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void Unmap();
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void Destroy();
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private:
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void CancelCallbacksForDisconnect() override;
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void ClearAllCallbacks(WGPUBufferMapAsyncStatus status);
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bool IsMappedForReading() const;
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bool IsMappedForWriting() const;
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bool CheckGetMappedRangeOffsetSize(size_t offset, size_t size) const;
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void FreeMappedData();
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Device* mDevice;
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enum class MapRequestType { None, Read, Write };
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enum class MapState {
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Unmapped,
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MappedForRead,
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MappedForWrite,
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MappedAtCreation,
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};
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// We want to defer all the validation to the server, which means we could have multiple
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// map request in flight at a single time and need to track them separately.
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// On well-behaved applications, only one request should exist at a single time.
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struct MapRequestData {
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WGPUBufferMapCallback callback = nullptr;
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void* userdata = nullptr;
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size_t offset = 0;
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size_t size = 0;
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// When the buffer is destroyed or unmapped too early, the unmappedBeforeX status takes
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// precedence over the success value returned from the server. However Error statuses
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// from the server take precedence over the client-side status.
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WGPUBufferMapAsyncStatus clientStatus = WGPUBufferMapAsyncStatus_Success;
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MapRequestType type = MapRequestType::None;
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};
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RequestTracker<MapRequestData> mRequests;
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uint64_t mSize = 0;
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// Only one mapped pointer can be active at a time because Unmap clears all the in-flight
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// requests.
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// TODO(enga): Use a tagged pointer to save space.
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std::unique_ptr<MemoryTransferService::ReadHandle> mReadHandle = nullptr;
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std::unique_ptr<MemoryTransferService::WriteHandle> mWriteHandle = nullptr;
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MapState mMapState = MapState::Unmapped;
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bool mDestructWriteHandleOnUnmap = false;
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void* mMappedData = nullptr;
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size_t mMapOffset = 0;
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size_t mMapSize = 0;
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std::weak_ptr<bool> mDeviceIsAlive;
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};
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} // namespace dawn::wire::client
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#endif // DAWNWIRE_CLIENT_BUFFER_H_
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