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1fdcb16b69
BUG=dawn:22 Change-Id: I4963aa27322086e74947a1a6265c921e2c7d3d85 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/12700 Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Corentin Wallez <cwallez@chromium.org>
59 lines
2.2 KiB
C++
59 lines
2.2 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 <map>
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namespace dawn_wire { namespace client {
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struct Buffer : ObjectBase {
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using ObjectBase::ObjectBase;
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~Buffer();
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void ClearMapRequests(WGPUBufferMapAsyncStatus status);
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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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// TODO(enga): Use a tagged pointer to save space.
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WGPUBufferMapReadCallback readCallback = nullptr;
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WGPUBufferMapWriteCallback writeCallback = nullptr;
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void* userdata = nullptr;
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// TODO(enga): Use a tagged pointer to save space.
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std::unique_ptr<MemoryTransferService::ReadHandle> readHandle = nullptr;
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std::unique_ptr<MemoryTransferService::WriteHandle> writeHandle = nullptr;
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};
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std::map<uint32_t, MapRequestData> requests;
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uint32_t requestSerial = 0;
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uint64_t size = 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> readHandle = nullptr;
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std::unique_ptr<MemoryTransferService::WriteHandle> writeHandle = nullptr;
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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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