Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 238 insertions, 0 deletions

diff --git a/dom/webgpu/ipc/WebGPUParent.h b/dom/webgpu/ipc/WebGPUParent.h
new file mode 100644
index 0000000000..6ad539c21e
--- /dev/null
+++ b/dom/webgpu/ipc/WebGPUParent.h
@@ -0,0 +1,238 @@
+/* -*- 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 <unordered_map>
+
+#include "mozilla/WeakPtr.h"
+#include "mozilla/webgpu/ffi/wgpu.h"
+#include "mozilla/webgpu/PWebGPUParent.h"
+#include "mozilla/webrender/WebRenderAPI.h"
+#include "mozilla/ipc/RawShmem.h"
+#include "WebGPUTypes.h"
+#include "base/timer.h"
+
+namespace mozilla {
+
+namespace layers {
+class RemoteTextureOwnerClient;
+}  // namespace layers
+
+namespace webgpu {
+
+class ErrorBuffer;
+class ExternalTexture;
+class PresentationData;
+
+// Destroy/Drop messages:
+// - Messages with "Destroy" in their name request deallocation of resources
+// owned by the
+//   object and put the object in a destroyed state without deleting the object.
+//   It is still safe to reffer to these objects.
+// - Messages with "Drop" in their name can be thought of as C++ destructors.
+// They completely
+//   delete the object, so future attempts at accessing to these objects will
+//   crash. The child process should *never* send a Drop message if it still
+//   holds references to the object. An object that has been destroyed still
+//   needs to be dropped when the last reference to it dies on the child
+//   process.
+
+class WebGPUParent final : public PWebGPUParent, public SupportsWeakPtr {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WebGPUParent, override)
+
+ public:
+  explicit WebGPUParent();
+
+  ipc::IPCResult RecvInstanceRequestAdapter(
+      const dom::GPURequestAdapterOptions& aOptions,
+      const nsTArray<RawId>& aTargetIds,
+      InstanceRequestAdapterResolver&& resolver);
+  ipc::IPCResult RecvAdapterRequestDevice(
+      RawId aAdapterId, const ipc::ByteBuf& aByteBuf, RawId aDeviceId,
+      AdapterRequestDeviceResolver&& resolver);
+  ipc::IPCResult RecvAdapterDrop(RawId aAdapterId);
+  ipc::IPCResult RecvDeviceDestroy(RawId aDeviceId);
+  ipc::IPCResult RecvDeviceDrop(RawId aDeviceId);
+  ipc::IPCResult RecvDeviceCreateBuffer(RawId aDeviceId, RawId aBufferId,
+                                        dom::GPUBufferDescriptor&& aDesc,
+                                        ipc::UnsafeSharedMemoryHandle&& aShmem);
+  ipc::IPCResult RecvBufferMap(RawId aDeviceId, RawId aBufferId, uint32_t aMode,
+                               uint64_t aOffset, uint64_t size,
+                               BufferMapResolver&& aResolver);
+  ipc::IPCResult RecvBufferUnmap(RawId aDeviceId, RawId aBufferId, bool aFlush);
+  ipc::IPCResult RecvBufferDestroy(RawId aBufferId);
+  ipc::IPCResult RecvBufferDrop(RawId aBufferId);
+  ipc::IPCResult RecvTextureDestroy(RawId aTextureId, RawId aDeviceId);
+  ipc::IPCResult RecvTextureDrop(RawId aTextureId);
+  ipc::IPCResult RecvTextureViewDrop(RawId aTextureViewId);
+  ipc::IPCResult RecvSamplerDrop(RawId aSamplerId);
+  ipc::IPCResult RecvCommandEncoderFinish(
+      RawId aEncoderId, RawId aDeviceId,
+      const dom::GPUCommandBufferDescriptor& aDesc);
+  ipc::IPCResult RecvCommandEncoderDrop(RawId aEncoderId);
+  ipc::IPCResult RecvCommandBufferDrop(RawId aCommandBufferId);
+  ipc::IPCResult RecvRenderBundleDrop(RawId aBundleId);
+  ipc::IPCResult RecvQueueSubmit(RawId aQueueId, RawId aDeviceId,
+                                 const nsTArray<RawId>& aCommandBuffers,
+                                 const nsTArray<RawId>& aTextureIds);
+  ipc::IPCResult RecvQueueOnSubmittedWorkDone(
+      RawId aQueueId, std::function<void(mozilla::void_t)>&& aResolver);
+  ipc::IPCResult RecvQueueWriteAction(RawId aQueueId, RawId aDeviceId,
+                                      const ipc::ByteBuf& aByteBuf,
+                                      ipc::UnsafeSharedMemoryHandle&& aShmem);
+  ipc::IPCResult RecvBindGroupLayoutDrop(RawId aBindGroupLayoutId);
+  ipc::IPCResult RecvPipelineLayoutDrop(RawId aPipelineLayoutId);
+  ipc::IPCResult RecvBindGroupDrop(RawId aBindGroupId);
+  ipc::IPCResult RecvShaderModuleDrop(RawId aModuleId);
+  ipc::IPCResult RecvComputePipelineDrop(RawId aPipelineId);
+  ipc::IPCResult RecvRenderPipelineDrop(RawId aPipelineId);
+  ipc::IPCResult RecvImplicitLayoutDrop(RawId aImplicitPlId,
+                                        const nsTArray<RawId>& aImplicitBglIds);
+  ipc::IPCResult RecvDeviceCreateSwapChain(
+      RawId aDeviceId, RawId aQueueId, const layers::RGBDescriptor& aDesc,
+      const nsTArray<RawId>& aBufferIds,
+      const layers::RemoteTextureOwnerId& aOwnerId,
+      bool aUseExternalTextureInSwapChain);
+  ipc::IPCResult RecvDeviceCreateShaderModule(
+      RawId aDeviceId, RawId aModuleId, const nsString& aLabel,
+      const nsCString& aCode, DeviceCreateShaderModuleResolver&& aOutMessage);
+
+  ipc::IPCResult RecvSwapChainPresent(
+      RawId aTextureId, RawId aCommandEncoderId,
+      const layers::RemoteTextureId& aRemoteTextureId,
+      const layers::RemoteTextureOwnerId& aOwnerId);
+  ipc::IPCResult RecvSwapChainDrop(const layers::RemoteTextureOwnerId& aOwnerId,
+                                   layers::RemoteTextureTxnType aTxnType,
+                                   layers::RemoteTextureTxnId aTxnId);
+
+  ipc::IPCResult RecvDeviceAction(RawId aDeviceId,
+                                  const ipc::ByteBuf& aByteBuf);
+  ipc::IPCResult RecvDeviceActionWithAck(
+      RawId aDeviceId, const ipc::ByteBuf& aByteBuf,
+      DeviceActionWithAckResolver&& aResolver);
+  ipc::IPCResult RecvTextureAction(RawId aTextureId, RawId aDevice,
+                                   const ipc::ByteBuf& aByteBuf);
+  ipc::IPCResult RecvCommandEncoderAction(RawId aEncoderId, RawId aDeviceId,
+                                          const ipc::ByteBuf& aByteBuf);
+  ipc::IPCResult RecvBumpImplicitBindGroupLayout(RawId aPipelineId,
+                                                 bool aIsCompute,
+                                                 uint32_t aIndex,
+                                                 RawId aAssignId);
+
+  ipc::IPCResult RecvDevicePushErrorScope(RawId aDeviceId, dom::GPUErrorFilter);
+  ipc::IPCResult RecvDevicePopErrorScope(
+      RawId aDeviceId, DevicePopErrorScopeResolver&& aResolver);
+  ipc::IPCResult RecvGenerateError(Maybe<RawId> aDeviceId, dom::GPUErrorFilter,
+                                   const nsCString& message);
+
+  ipc::IPCResult GetFrontBufferSnapshot(
+      IProtocol* aProtocol, const layers::RemoteTextureOwnerId& aOwnerId,
+      Maybe<Shmem>& aShmem, gfx::IntSize& aSize);
+
+  void ActorDestroy(ActorDestroyReason aWhy) override;
+
+  struct BufferMapData {
+    ipc::WritableSharedMemoryMapping mShmem;
+    // True if buffer's usage has MAP_READ or MAP_WRITE set.
+    bool mHasMapFlags;
+    uint64_t mMappedOffset;
+    uint64_t mMappedSize;
+    RawId mDeviceId;
+  };
+
+  BufferMapData* GetBufferMapData(RawId aBufferId);
+
+  bool UseExternalTextureForSwapChain(ffi::WGPUSwapChainId aSwapChainId);
+
+  bool EnsureExternalTextureForSwapChain(ffi::WGPUSwapChainId aSwapChainId,
+                                         ffi::WGPUDeviceId aDeviceId,
+                                         ffi::WGPUTextureId aTextureId,
+                                         uint32_t aWidth, uint32_t aHeight,
+                                         struct ffi::WGPUTextureFormat aFormat,
+                                         ffi::WGPUTextureUsages aUsage);
+
+  std::shared_ptr<ExternalTexture> CreateExternalTexture(
+      ffi::WGPUDeviceId aDeviceId, ffi::WGPUTextureId aTextureId,
+      uint32_t aWidth, uint32_t aHeight,
+      const struct ffi::WGPUTextureFormat aFormat,
+      ffi::WGPUTextureUsages aUsage);
+
+  std::shared_ptr<ExternalTexture> GetExternalTexture(ffi::WGPUTextureId aId);
+
+  void PostExternalTexture(
+      const std::shared_ptr<ExternalTexture>&& aExternalTexture,
+      const layers::RemoteTextureId aRemoteTextureId,
+      const layers::RemoteTextureOwnerId aOwnerId);
+
+  bool ForwardError(const RawId aDeviceId, ErrorBuffer& aError) {
+    return ForwardError(Some(aDeviceId), aError);
+  }
+
+ private:
+  static void MapCallback(ffi::WGPUBufferMapAsyncStatus aStatus,
+                          uint8_t* aUserData);
+  static void DeviceLostCallback(uint8_t* aUserData, uint8_t aReason,
+                                 const char* aMessage);
+  void DeallocBufferShmem(RawId aBufferId);
+
+  void RemoveExternalTexture(RawId aTextureId);
+
+  virtual ~WebGPUParent();
+  void MaintainDevices();
+  void LoseDevice(const RawId aDeviceId, Maybe<uint8_t> aReason,
+                  const nsACString& aMessage);
+
+  bool ForwardError(Maybe<RawId> aDeviceId, ErrorBuffer& aError);
+
+  void ReportError(Maybe<RawId> aDeviceId, GPUErrorFilter,
+                   const nsCString& message);
+
+  static Maybe<ffi::WGPUFfiLUID> GetCompositorDeviceLuid();
+
+  UniquePtr<ffi::WGPUGlobal> mContext;
+  base::RepeatingTimer<WebGPUParent> mTimer;
+
+  /// A map from wgpu buffer ids to data about their shared memory segments.
+  /// Includes entries about mappedAtCreation, MAP_READ and MAP_WRITE buffers,
+  /// regardless of their state.
+  std::unordered_map<uint64_t, BufferMapData> mSharedMemoryMap;
+  /// Associated presentation data for each swapchain.
+  std::unordered_map<layers::RemoteTextureOwnerId, RefPtr<PresentationData>,
+                     layers::RemoteTextureOwnerId::HashFn>
+      mPresentationDataMap;
+
+  RefPtr<layers::RemoteTextureOwnerClient> mRemoteTextureOwner;
+
+  /// Associated stack of error scopes for each device.
+  std::unordered_map<uint64_t, std::vector<ErrorScope>>
+      mErrorScopeStackByDevice;
+
+  std::unordered_map<ffi::WGPUTextureId, std::shared_ptr<ExternalTexture>>
+      mExternalTextures;
+
+  // Store a set of DeviceIds that have been SendDeviceLost. We use this to
+  // limit each Device to one DeviceLost message.
+  nsTHashSet<RawId> mLostDeviceIds;
+
+  // Shared handle of wgpu device's fence.
+  RefPtr<gfx::FileHandleWrapper> mFenceHandle;
+
+  // Store DeviceLostRequest structs for each device as unique_ptrs mapped
+  // to their device ids. We keep these unique_ptrs alive as long as the
+  // device is alive.
+  struct DeviceLostRequest {
+    WeakPtr<WebGPUParent> mParent;
+    RawId mDeviceId;
+  };
+  std::unordered_map<RawId, std::unique_ptr<DeviceLostRequest>>
+      mDeviceLostRequests;
+};
+
+}  // namespace webgpu
+}  // namespace mozilla
+
+#endif  // WEBGPU_PARENT_H_