1 files changed, 99 insertions, 0 deletions
diff --git a/dom/webgpu/ipc/WebGPUParent.h b/dom/webgpu/ipc/WebGPUParent.h
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+++ b/dom/webgpu/ipc/WebGPUParent.h
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+/* -*- 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 WEBGPU_PARENT_H_
+#define WEBGPU_PARENT_H_
+
+#include "mozilla/webgpu/PWebGPUParent.h"
+#include "mozilla/webrender/WebRenderAPI.h"
+#include "WebGPUTypes.h"
+#include "base/timer.h"
+
+namespace mozilla {
+namespace webgpu {
+class PresentationData;
+
+class WebGPUParent final : public PWebGPUParent {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WebGPUParent)
+
+ public:
+  explicit WebGPUParent();
+
+  ipc::IPCResult RecvInstanceRequestAdapter(
+      const dom::GPURequestAdapterOptions& aOptions,
+      const nsTArray<RawId>& aTargetIds,
+      InstanceRequestAdapterResolver&& resolver);
+  ipc::IPCResult RecvAdapterRequestDevice(RawId aSelfId,
+                                          const dom::GPUDeviceDescriptor& aDesc,
+                                          RawId aNewId);
+  ipc::IPCResult RecvAdapterDestroy(RawId aSelfId);
+  ipc::IPCResult RecvDeviceDestroy(RawId aSelfId);
+  ipc::IPCResult RecvBufferReturnShmem(RawId aSelfId, Shmem&& aShmem);
+  ipc::IPCResult RecvBufferMap(RawId aSelfId, ffi::WGPUHostMap aHostMap,
+                               uint64_t aOffset, uint64_t size,
+                               BufferMapResolver&& aResolver);
+  ipc::IPCResult RecvBufferUnmap(RawId aSelfId, Shmem&& aShmem, bool aFlush);
+  ipc::IPCResult RecvBufferDestroy(RawId aSelfId);
+  ipc::IPCResult RecvTextureDestroy(RawId aSelfId);
+  ipc::IPCResult RecvTextureViewDestroy(RawId aSelfId);
+  ipc::IPCResult RecvSamplerDestroy(RawId aSelfId);
+  ipc::IPCResult RecvCommandEncoderFinish(
+      RawId aSelfId, RawId aDeviceId,
+      const dom::GPUCommandBufferDescriptor& aDesc);
+  ipc::IPCResult RecvCommandEncoderDestroy(RawId aSelfId);
+  ipc::IPCResult RecvCommandBufferDestroy(RawId aSelfId);
+  ipc::IPCResult RecvQueueSubmit(RawId aSelfId,
+                                 const nsTArray<RawId>& aCommandBuffers);
+  ipc::IPCResult RecvQueueWriteBuffer(RawId aSelfId, RawId aBufferId,
+                                      uint64_t aBufferOffset, Shmem&& aShmem);
+  ipc::IPCResult RecvQueueWriteTexture(
+      RawId aSelfId, const ffi::WGPUTextureCopyView& aDestination,
+      Shmem&& aShmem, const ffi::WGPUTextureDataLayout& aDataLayout,
+      const ffi::WGPUExtent3d& aExtent);
+  ipc::IPCResult RecvBindGroupLayoutDestroy(RawId aSelfId);
+  ipc::IPCResult RecvPipelineLayoutDestroy(RawId aSelfId);
+  ipc::IPCResult RecvBindGroupDestroy(RawId aSelfId);
+  ipc::IPCResult RecvShaderModuleDestroy(RawId aSelfId);
+  ipc::IPCResult RecvComputePipelineDestroy(RawId aSelfId);
+  ipc::IPCResult RecvRenderPipelineDestroy(RawId aSelfId);
+  ipc::IPCResult RecvDeviceCreateSwapChain(RawId aSelfId, RawId aQueueId,
+                                           const layers::RGBDescriptor& aDesc,
+                                           const nsTArray<RawId>& aBufferIds,
+                                           ExternalImageId aExternalId);
+  ipc::IPCResult RecvSwapChainPresent(wr::ExternalImageId aExternalId,
+                                      RawId aTextureId,
+                                      RawId aCommandEncoderId);
+  ipc::IPCResult RecvSwapChainDestroy(wr::ExternalImageId aExternalId);
+
+  ipc::IPCResult RecvDeviceAction(RawId aSelf, const ipc::ByteBuf& aByteBuf);
+  ipc::IPCResult RecvTextureAction(RawId aSelf, RawId aDevice,
+                                   const ipc::ByteBuf& aByteBuf);
+  ipc::IPCResult RecvCommandEncoderAction(RawId aSelf, RawId aDevice,
+                                          const ipc::ByteBuf& aByteBuf);
+  ipc::IPCResult RecvBumpImplicitBindGroupLayout(RawId aPipelineId,
+                                                 bool aIsCompute,
+                                                 uint32_t aIndex,
+                                                 RawId aAssignId);
+
+  ipc::IPCResult RecvShutdown();
+
+ private:
+  virtual ~WebGPUParent();
+  void MaintainDevices();
+
+  const ffi::WGPUGlobal* const mContext;
+  base::RepeatingTimer<WebGPUParent> mTimer;
+  /// Shmem associated with a mappable buffer has to be owned by one of the
+  /// processes. We keep it here for every mappable buffer while the buffer is
+  /// used by GPU.
+  std::unordered_map<uint64_t, Shmem> mSharedMemoryMap;
+  /// Associated presentation data for each swapchain.
+  std::unordered_map<uint64_t, RefPtr<PresentationData>> mCanvasMap;
+};
+
+}  // namespace webgpu
+}  // namespace mozilla
+
+#endif  // WEBGPU_PARENT_H_