Adding upstream version 115.7.0esr.upstream/115.7.0esr

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

1 files changed, 848 insertions, 0 deletions

diff --git a/gfx/layers/composite/TextureHost.cpp b/gfx/layers/composite/TextureHost.cpp
new file mode 100644
index 0000000000..bb11b3463b
--- /dev/null
+++ b/gfx/layers/composite/TextureHost.cpp
@@ -0,0 +1,848 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "TextureHost.h"
+
+#include "CompositableHost.h"  // for CompositableHost
+#include "mozilla/gfx/2D.h"    // for DataSourceSurface, Factory
+#include "mozilla/gfx/gfxVars.h"
+#include "mozilla/ipc/Shmem.h"  // for Shmem
+#include "mozilla/layers/AsyncImagePipelineManager.h"
+#include "mozilla/layers/BufferTexture.h"
+#include "mozilla/layers/CompositableTransactionParent.h"  // for CompositableParentManager
+#include "mozilla/layers/CompositorBridgeParent.h"
+#include "mozilla/layers/Compositor.h"         // for Compositor
+#include "mozilla/layers/ISurfaceAllocator.h"  // for ISurfaceAllocator
+#include "mozilla/layers/ImageBridgeParent.h"  // for ImageBridgeParent
+#include "mozilla/layers/LayersSurfaces.h"     // for SurfaceDescriptor, etc
+#include "mozilla/layers/RemoteTextureMap.h"
+#include "mozilla/layers/TextureHostOGL.h"  // for TextureHostOGL
+#include "mozilla/layers/ImageDataSerializer.h"
+#include "mozilla/layers/TextureClient.h"
+#include "mozilla/layers/GPUVideoTextureHost.h"
+#include "mozilla/layers/WebRenderTextureHost.h"
+#include "mozilla/StaticPrefs_layers.h"
+#include "mozilla/StaticPrefs_gfx.h"
+#include "mozilla/webrender/RenderBufferTextureHost.h"
+#include "mozilla/webrender/RenderExternalTextureHost.h"
+#include "mozilla/webrender/RenderThread.h"
+#include "mozilla/webrender/WebRenderAPI.h"
+#include "nsAString.h"
+#include "mozilla/RefPtr.h"   // for nsRefPtr
+#include "nsPrintfCString.h"  // for nsPrintfCString
+#include "mozilla/layers/PTextureParent.h"
+#include "mozilla/Unused.h"
+#include <limits>
+#include "../opengl/CompositorOGL.h"
+
+#include "gfxUtils.h"
+#include "IPDLActor.h"
+
+#ifdef XP_MACOSX
+#  include "../opengl/MacIOSurfaceTextureHostOGL.h"
+#endif
+
+#ifdef XP_WIN
+#  include "../d3d11/CompositorD3D11.h"
+#  include "mozilla/layers/TextureD3D11.h"
+#  ifdef MOZ_WMF_MEDIA_ENGINE
+#    include "mozilla/layers/DcompSurfaceImage.h"
+#  endif
+#endif
+
+#if 0
+#  define RECYCLE_LOG(...) printf_stderr(__VA_ARGS__)
+#else
+#  define RECYCLE_LOG(...) \
+    do {                   \
+    } while (0)
+#endif
+
+namespace mozilla {
+namespace layers {
+
+/**
+ * TextureParent is the host-side IPDL glue between TextureClient and
+ * TextureHost. It is an IPDL actor just like LayerParent, CompositableParent,
+ * etc.
+ */
+class TextureParent : public ParentActor<PTextureParent> {
+ public:
+  TextureParent(HostIPCAllocator* aAllocator,
+                const dom::ContentParentId& aContentId, uint64_t aSerial,
+                const wr::MaybeExternalImageId& aExternalImageId);
+
+  virtual ~TextureParent();
+
+  bool Init(const SurfaceDescriptor& aSharedData,
+            ReadLockDescriptor&& aReadLock, const LayersBackend& aLayersBackend,
+            const TextureFlags& aFlags);
+
+  void NotifyNotUsed(uint64_t aTransactionId);
+
+  mozilla::ipc::IPCResult RecvRecycleTexture(
+      const TextureFlags& aTextureFlags) final;
+
+  TextureHost* GetTextureHost() { return mTextureHost; }
+
+  void Destroy() override;
+
+  const dom::ContentParentId& GetContentId() const { return mContentId; }
+
+  uint64_t GetSerial() const { return mSerial; }
+
+  HostIPCAllocator* mSurfaceAllocator;
+  RefPtr<TextureHost> mTextureHost;
+  dom::ContentParentId mContentId;
+  // mSerial is unique in TextureClient's process.
+  const uint64_t mSerial;
+  wr::MaybeExternalImageId mExternalImageId;
+};
+
+static bool WrapWithWebRenderTextureHost(ISurfaceAllocator* aDeallocator,
+                                         LayersBackend aBackend,
+                                         TextureFlags aFlags) {
+  if (!aDeallocator) {
+    return false;
+  }
+  if ((aFlags & TextureFlags::SNAPSHOT) ||
+      (!aDeallocator->UsesImageBridge() &&
+       !aDeallocator->AsCompositorBridgeParentBase())) {
+    return false;
+  }
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+PTextureParent* TextureHost::CreateIPDLActor(
+    HostIPCAllocator* aAllocator, const SurfaceDescriptor& aSharedData,
+    ReadLockDescriptor&& aReadLock, LayersBackend aLayersBackend,
+    TextureFlags aFlags, const dom::ContentParentId& aContentId,
+    uint64_t aSerial, const wr::MaybeExternalImageId& aExternalImageId) {
+  TextureParent* actor =
+      new TextureParent(aAllocator, aContentId, aSerial, aExternalImageId);
+  if (!actor->Init(aSharedData, std::move(aReadLock), aLayersBackend, aFlags)) {
+    actor->ActorDestroy(ipc::IProtocol::ActorDestroyReason::FailedConstructor);
+    delete actor;
+    return nullptr;
+  }
+  return actor;
+}
+
+// static
+bool TextureHost::DestroyIPDLActor(PTextureParent* actor) {
+  delete actor;
+  return true;
+}
+
+// static
+bool TextureHost::SendDeleteIPDLActor(PTextureParent* actor) {
+  return PTextureParent::Send__delete__(actor);
+}
+
+// static
+TextureHost* TextureHost::AsTextureHost(PTextureParent* actor) {
+  if (!actor) {
+    return nullptr;
+  }
+  return static_cast<TextureParent*>(actor)->mTextureHost;
+}
+
+// static
+uint64_t TextureHost::GetTextureSerial(PTextureParent* actor) {
+  if (!actor) {
+    return UINT64_MAX;
+  }
+  return static_cast<TextureParent*>(actor)->mSerial;
+}
+
+// static
+dom::ContentParentId TextureHost::GetTextureContentId(PTextureParent* actor) {
+  if (!actor) {
+    return dom::ContentParentId();
+  }
+  return static_cast<TextureParent*>(actor)->mContentId;
+}
+
+PTextureParent* TextureHost::GetIPDLActor() { return mActor; }
+
+void TextureHost::SetLastFwdTransactionId(uint64_t aTransactionId) {
+  MOZ_ASSERT(mFwdTransactionId <= aTransactionId);
+  mFwdTransactionId = aTransactionId;
+}
+
+already_AddRefed<TextureHost> CreateDummyBufferTextureHost(
+    mozilla::layers::LayersBackend aBackend,
+    mozilla::layers::TextureFlags aFlags) {
+  // Ensure that the host will delete the memory.
+  aFlags &= ~TextureFlags::DEALLOCATE_CLIENT;
+  aFlags |= TextureFlags::DUMMY_TEXTURE;
+  UniquePtr<TextureData> textureData(BufferTextureData::Create(
+      gfx::IntSize(1, 1), gfx::SurfaceFormat::B8G8R8A8, gfx::BackendType::SKIA,
+      aBackend, aFlags, TextureAllocationFlags::ALLOC_DEFAULT, nullptr));
+  SurfaceDescriptor surfDesc;
+  textureData->Serialize(surfDesc);
+  const SurfaceDescriptorBuffer& bufferDesc =
+      surfDesc.get_SurfaceDescriptorBuffer();
+  const MemoryOrShmem& data = bufferDesc.data();
+  RefPtr<TextureHost> host =
+      new MemoryTextureHost(reinterpret_cast<uint8_t*>(data.get_uintptr_t()),
+                            bufferDesc.desc(), aFlags);
+  return host.forget();
+}
+
+already_AddRefed<TextureHost> TextureHost::Create(
+    const SurfaceDescriptor& aDesc, ReadLockDescriptor&& aReadLock,
+    ISurfaceAllocator* aDeallocator, LayersBackend aBackend,
+    TextureFlags aFlags, wr::MaybeExternalImageId& aExternalImageId) {
+  RefPtr<TextureHost> result;
+
+  switch (aDesc.type()) {
+    case SurfaceDescriptor::TSurfaceDescriptorBuffer:
+    case SurfaceDescriptor::TSurfaceDescriptorGPUVideo:
+      result = CreateBackendIndependentTextureHost(aDesc, aDeallocator,
+                                                   aBackend, aFlags);
+      break;
+
+    case SurfaceDescriptor::TEGLImageDescriptor:
+    case SurfaceDescriptor::TSurfaceTextureDescriptor:
+    case SurfaceDescriptor::TSurfaceDescriptorAndroidHardwareBuffer:
+    case SurfaceDescriptor::TSurfaceDescriptorSharedGLTexture:
+    case SurfaceDescriptor::TSurfaceDescriptorDMABuf:
+      result = CreateTextureHostOGL(aDesc, aDeallocator, aBackend, aFlags);
+      break;
+
+    case SurfaceDescriptor::TSurfaceDescriptorMacIOSurface:
+      result = CreateTextureHostOGL(aDesc, aDeallocator, aBackend, aFlags);
+      break;
+
+#ifdef XP_WIN
+    case SurfaceDescriptor::TSurfaceDescriptorD3D10:
+    case SurfaceDescriptor::TSurfaceDescriptorDXGIYCbCr:
+      result = CreateTextureHostD3D11(aDesc, aDeallocator, aBackend, aFlags);
+      break;
+#  ifdef MOZ_WMF_MEDIA_ENGINE
+    case SurfaceDescriptor::TSurfaceDescriptorDcompSurface:
+      result =
+          CreateTextureHostDcompSurface(aDesc, aDeallocator, aBackend, aFlags);
+      break;
+#  endif
+#endif
+    case SurfaceDescriptor::TSurfaceDescriptorRecorded: {
+      const SurfaceDescriptorRecorded& desc =
+          aDesc.get_SurfaceDescriptorRecorded();
+      CompositorBridgeParentBase* actor =
+          aDeallocator ? aDeallocator->AsCompositorBridgeParentBase() : nullptr;
+      UniquePtr<SurfaceDescriptor> realDesc =
+          actor
+              ? actor->LookupSurfaceDescriptorForClientTexture(desc.textureId())
+              : nullptr;
+      if (!realDesc) {
+        gfxCriticalNote << "Failed to get descriptor for recorded texture.";
+        // Create a dummy to prevent any crashes due to missing IPDL actors.
+        result = CreateDummyBufferTextureHost(aBackend, aFlags);
+        break;
+      }
+
+      result =
+          TextureHost::Create(*realDesc, std::move(aReadLock), aDeallocator,
+                              aBackend, aFlags, aExternalImageId);
+      return result.forget();
+    }
+    default:
+      MOZ_CRASH("GFX: Unsupported Surface type host");
+  }
+
+  if (!result) {
+    gfxCriticalNote << "TextureHost creation failure type=" << aDesc.type();
+  }
+
+  if (result && WrapWithWebRenderTextureHost(aDeallocator, aBackend, aFlags)) {
+    MOZ_ASSERT(aExternalImageId.isSome());
+    result = new WebRenderTextureHost(aFlags, result, aExternalImageId.ref());
+  }
+
+  if (result) {
+    result->DeserializeReadLock(std::move(aReadLock), aDeallocator);
+  }
+
+  return result.forget();
+}
+
+already_AddRefed<TextureHost> CreateBackendIndependentTextureHost(
+    const SurfaceDescriptor& aDesc, ISurfaceAllocator* aDeallocator,
+    LayersBackend aBackend, TextureFlags aFlags) {
+  RefPtr<TextureHost> result;
+  switch (aDesc.type()) {
+    case SurfaceDescriptor::TSurfaceDescriptorBuffer: {
+      const SurfaceDescriptorBuffer& bufferDesc =
+          aDesc.get_SurfaceDescriptorBuffer();
+      const MemoryOrShmem& data = bufferDesc.data();
+      switch (data.type()) {
+        case MemoryOrShmem::TShmem: {
+          const ipc::Shmem& shmem = data.get_Shmem();
+          const BufferDescriptor& desc = bufferDesc.desc();
+          if (!shmem.IsReadable()) {
+            // We failed to map the shmem so we can't verify its size. This
+            // should not be a fatal error, so just create the texture with
+            // nothing backing it.
+            result = new ShmemTextureHost(shmem, desc, aDeallocator, aFlags);
+            break;
+          }
+
+          size_t bufSize = shmem.Size<char>();
+          size_t reqSize = SIZE_MAX;
+          switch (desc.type()) {
+            case BufferDescriptor::TYCbCrDescriptor: {
+              const YCbCrDescriptor& ycbcr = desc.get_YCbCrDescriptor();
+              reqSize = ImageDataSerializer::ComputeYCbCrBufferSize(
+                  ycbcr.ySize(), ycbcr.yStride(), ycbcr.cbCrSize(),
+                  ycbcr.cbCrStride(), ycbcr.yOffset(), ycbcr.cbOffset(),
+                  ycbcr.crOffset());
+              break;
+            }
+            case BufferDescriptor::TRGBDescriptor: {
+              const RGBDescriptor& rgb = desc.get_RGBDescriptor();
+              reqSize = ImageDataSerializer::ComputeRGBBufferSize(rgb.size(),
+                                                                  rgb.format());
+              break;
+            }
+            default:
+              gfxCriticalError()
+                  << "Bad buffer host descriptor " << (int)desc.type();
+              MOZ_CRASH("GFX: Bad descriptor");
+          }
+
+          if (reqSize == 0 || bufSize < reqSize) {
+            NS_ERROR(
+                "A client process gave a shmem too small to fit for its "
+                "descriptor!");
+            return nullptr;
+          }
+
+          result = new ShmemTextureHost(shmem, desc, aDeallocator, aFlags);
+          break;
+        }
+        case MemoryOrShmem::Tuintptr_t: {
+          if (aDeallocator && !aDeallocator->IsSameProcess()) {
+            NS_ERROR(
+                "A client process is trying to peek at our address space using "
+                "a MemoryTexture!");
+            return nullptr;
+          }
+
+          result = new MemoryTextureHost(
+              reinterpret_cast<uint8_t*>(data.get_uintptr_t()),
+              bufferDesc.desc(), aFlags);
+          break;
+        }
+        default:
+          gfxCriticalError()
+              << "Failed texture host for backend " << (int)data.type();
+          MOZ_CRASH("GFX: No texture host for backend");
+      }
+      break;
+    }
+    case SurfaceDescriptor::TSurfaceDescriptorGPUVideo: {
+      MOZ_ASSERT(aDesc.get_SurfaceDescriptorGPUVideo().type() ==
+                 SurfaceDescriptorGPUVideo::TSurfaceDescriptorRemoteDecoder);
+      result = GPUVideoTextureHost::CreateFromDescriptor(
+          aDeallocator->GetContentId(), aFlags,
+          aDesc.get_SurfaceDescriptorGPUVideo());
+      break;
+    }
+    default: {
+      NS_WARNING("No backend independent TextureHost for this descriptor type");
+    }
+  }
+  return result.forget();
+}
+
+TextureHost::TextureHost(TextureHostType aType, TextureFlags aFlags)
+    : AtomicRefCountedWithFinalize("TextureHost"),
+      mTextureHostType(aType),
+      mActor(nullptr),
+      mFlags(aFlags),
+      mCompositableCount(0),
+      mFwdTransactionId(0),
+      mReadLocked(false) {}
+
+TextureHost::~TextureHost() {
+  if (mReadLocked) {
+    // If we still have a ReadLock, unlock it. At this point we don't care about
+    // the texture client being written into on the other side since it should
+    // be destroyed by now. But we will hit assertions if we don't ReadUnlock
+    // before destroying the lock itself.
+    ReadUnlock();
+  }
+  if (mDestroyedCallback) {
+    mDestroyedCallback();
+  }
+}
+
+void TextureHost::Finalize() {
+  MaybeDestroyRenderTexture();
+
+  if (!(GetFlags() & TextureFlags::DEALLOCATE_CLIENT)) {
+    DeallocateSharedData();
+    DeallocateDeviceData();
+  }
+}
+
+void TextureHost::UnbindTextureSource() {
+  if (mReadLocked) {
+    ReadUnlock();
+  }
+}
+
+void TextureHost::RecycleTexture(TextureFlags aFlags) {
+  MOZ_ASSERT(GetFlags() & TextureFlags::RECYCLE);
+  MOZ_ASSERT(aFlags & TextureFlags::RECYCLE);
+  mFlags = aFlags;
+}
+
+void TextureHost::PrepareForUse() {}
+
+void TextureHost::NotifyNotUsed() {
+  if (!mActor) {
+    if ((mFlags & TextureFlags::REMOTE_TEXTURE) && AsSurfaceTextureHost()) {
+      MOZ_ASSERT(mExternalImageId.isSome());
+      wr::RenderThread::Get()->NotifyNotUsed(*mExternalImageId);
+    }
+    return;
+  }
+
+  // Do not need to call NotifyNotUsed() if TextureHost does not have
+  // TextureFlags::RECYCLE flag nor TextureFlags::WAIT_HOST_USAGE_END flag.
+  if (!(GetFlags() & TextureFlags::RECYCLE) &&
+      !(GetFlags() & TextureFlags::WAIT_HOST_USAGE_END)) {
+    return;
+  }
+
+  static_cast<TextureParent*>(mActor)->NotifyNotUsed(mFwdTransactionId);
+}
+
+void TextureHost::CallNotifyNotUsed() {
+  if (!mActor) {
+    return;
+  }
+  static_cast<TextureParent*>(mActor)->NotifyNotUsed(mFwdTransactionId);
+}
+
+void TextureHost::MaybeDestroyRenderTexture() {
+  if (mExternalImageId.isNothing()) {
+    // RenderTextureHost was not created
+    return;
+  }
+  // When TextureHost created RenderTextureHost, delete it here.
+  TextureHost::DestroyRenderTexture(mExternalImageId.ref());
+  mExternalImageId = Nothing();
+}
+
+void TextureHost::DestroyRenderTexture(
+    const wr::ExternalImageId& aExternalImageId) {
+  wr::RenderThread::Get()->UnregisterExternalImage(aExternalImageId);
+}
+
+void TextureHost::EnsureRenderTexture(
+    const wr::MaybeExternalImageId& aExternalImageId) {
+  if (aExternalImageId.isNothing()) {
+    // TextureHost is wrapped by GPUVideoTextureHost.
+    if (mExternalImageId.isSome()) {
+      // RenderTextureHost was already created.
+      return;
+    }
+    mExternalImageId =
+        Some(AsyncImagePipelineManager::GetNextExternalImageId());
+  } else {
+    // TextureHost is wrapped by WebRenderTextureHost.
+    if (aExternalImageId == mExternalImageId) {
+      // The texture has already been created.
+      return;
+    }
+    MOZ_ASSERT(mExternalImageId.isNothing());
+    mExternalImageId = aExternalImageId;
+  }
+  CreateRenderTexture(mExternalImageId.ref());
+}
+
+TextureSource::TextureSource() : mCompositableCount(0) {}
+
+TextureSource::~TextureSource() = default;
+BufferTextureHost::BufferTextureHost(const BufferDescriptor& aDesc,
+                                     TextureFlags aFlags)
+    : TextureHost(TextureHostType::Buffer, aFlags), mLocked(false) {
+  mDescriptor = aDesc;
+  switch (mDescriptor.type()) {
+    case BufferDescriptor::TYCbCrDescriptor: {
+      const YCbCrDescriptor& ycbcr = mDescriptor.get_YCbCrDescriptor();
+      mSize = ycbcr.display().Size();
+      mFormat = gfx::SurfaceFormat::YUV;
+      break;
+    }
+    case BufferDescriptor::TRGBDescriptor: {
+      const RGBDescriptor& rgb = mDescriptor.get_RGBDescriptor();
+      mSize = rgb.size();
+      mFormat = rgb.format();
+      break;
+    }
+    default:
+      gfxCriticalError() << "Bad buffer host descriptor "
+                         << (int)mDescriptor.type();
+      MOZ_CRASH("GFX: Bad descriptor");
+  }
+
+#ifdef XP_MACOSX
+  const int kMinSize = 1024;
+  const int kMaxSize = 4096;
+  mUseExternalTextures =
+      kMaxSize >= mSize.width && mSize.width >= kMinSize &&
+      kMaxSize >= mSize.height && mSize.height >= kMinSize &&
+      StaticPrefs::gfx_webrender_enable_client_storage_AtStartup();
+#else
+  mUseExternalTextures = false;
+#endif
+}
+
+BufferTextureHost::~BufferTextureHost() = default;
+
+void BufferTextureHost::DeallocateDeviceData() {}
+
+void BufferTextureHost::CreateRenderTexture(
+    const wr::ExternalImageId& aExternalImageId) {
+  RefPtr<wr::RenderTextureHost> texture;
+
+  if (UseExternalTextures()) {
+    texture =
+        new wr::RenderExternalTextureHost(GetBuffer(), GetBufferDescriptor());
+  } else {
+    texture =
+        new wr::RenderBufferTextureHost(GetBuffer(), GetBufferDescriptor());
+  }
+
+  wr::RenderThread::Get()->RegisterExternalImage(aExternalImageId,
+                                                 texture.forget());
+}
+
+uint32_t BufferTextureHost::NumSubTextures() {
+  if (GetFormat() == gfx::SurfaceFormat::YUV) {
+    return 3;
+  }
+
+  return 1;
+}
+
+void BufferTextureHost::PushResourceUpdates(
+    wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+  auto method = aOp == TextureHost::ADD_IMAGE
+                    ? &wr::TransactionBuilder::AddExternalImage
+                    : &wr::TransactionBuilder::UpdateExternalImage;
+
+  // Use native textures if our backend requires it, or if our backend doesn't
+  // forbid it and we want to use them.
+  NativeTexturePolicy policy =
+      BackendNativeTexturePolicy(aResources.GetBackendType(), GetSize());
+  bool useNativeTexture =
+      (policy == REQUIRE) || (policy != FORBID && UseExternalTextures());
+  auto imageType = useNativeTexture ? wr::ExternalImageType::TextureHandle(
+                                          wr::ImageBufferKind::TextureRect)
+                                    : wr::ExternalImageType::Buffer();
+
+  if (GetFormat() != gfx::SurfaceFormat::YUV) {
+    MOZ_ASSERT(aImageKeys.length() == 1);
+
+    wr::ImageDescriptor descriptor(
+        GetSize(),
+        ImageDataSerializer::ComputeRGBStride(GetFormat(), GetSize().width),
+        GetFormat());
+    (aResources.*method)(aImageKeys[0], descriptor, aExtID, imageType, 0);
+  } else {
+    MOZ_ASSERT(aImageKeys.length() == 3);
+
+    const layers::YCbCrDescriptor& desc = mDescriptor.get_YCbCrDescriptor();
+    gfx::IntSize ySize = desc.display().Size();
+    gfx::IntSize cbcrSize = ImageDataSerializer::GetCroppedCbCrSize(desc);
+    wr::ImageDescriptor yDescriptor(
+        ySize, desc.yStride(), SurfaceFormatForColorDepth(desc.colorDepth()));
+    wr::ImageDescriptor cbcrDescriptor(
+        cbcrSize, desc.cbCrStride(),
+        SurfaceFormatForColorDepth(desc.colorDepth()));
+    (aResources.*method)(aImageKeys[0], yDescriptor, aExtID, imageType, 0);
+    (aResources.*method)(aImageKeys[1], cbcrDescriptor, aExtID, imageType, 1);
+    (aResources.*method)(aImageKeys[2], cbcrDescriptor, aExtID, imageType, 2);
+  }
+}
+
+void BufferTextureHost::PushDisplayItems(wr::DisplayListBuilder& aBuilder,
+                                         const wr::LayoutRect& aBounds,
+                                         const wr::LayoutRect& aClip,
+                                         wr::ImageRendering aFilter,
+                                         const Range<wr::ImageKey>& aImageKeys,
+                                         PushDisplayItemFlagSet aFlags) {
+  // SWGL should always try to bypass shaders and composite directly.
+  bool preferCompositorSurface =
+      aFlags.contains(PushDisplayItemFlag::PREFER_COMPOSITOR_SURFACE);
+  bool useExternalSurface =
+      aFlags.contains(PushDisplayItemFlag::SUPPORTS_EXTERNAL_BUFFER_TEXTURES);
+  if (GetFormat() != gfx::SurfaceFormat::YUV) {
+    MOZ_ASSERT(aImageKeys.length() == 1);
+    aBuilder.PushImage(aBounds, aClip, true, false, aFilter, aImageKeys[0],
+                       !(mFlags & TextureFlags::NON_PREMULTIPLIED),
+                       wr::ColorF{1.0f, 1.0f, 1.0f, 1.0f},
+                       preferCompositorSurface, useExternalSurface);
+  } else {
+    MOZ_ASSERT(aImageKeys.length() == 3);
+    const YCbCrDescriptor& desc = mDescriptor.get_YCbCrDescriptor();
+    aBuilder.PushYCbCrPlanarImage(
+        aBounds, aClip, true, aImageKeys[0], aImageKeys[1], aImageKeys[2],
+        wr::ToWrColorDepth(desc.colorDepth()),
+        wr::ToWrYuvColorSpace(desc.yUVColorSpace()),
+        wr::ToWrColorRange(desc.colorRange()), aFilter, preferCompositorSurface,
+        useExternalSurface);
+  }
+}
+
+void TextureHost::DeserializeReadLock(ReadLockDescriptor&& aDesc,
+                                      ISurfaceAllocator* aAllocator) {
+  if (mReadLock) {
+    return;
+  }
+
+  mReadLock = TextureReadLock::Deserialize(std::move(aDesc), aAllocator);
+}
+
+void TextureHost::SetReadLocked() {
+  if (!mReadLock) {
+    return;
+  }
+  // If mReadLocked is true it means we haven't read unlocked yet and the
+  // content side should not have been able to write into this texture and read
+  // lock again!
+  MOZ_ASSERT(!mReadLocked);
+  mReadLocked = true;
+}
+
+void TextureHost::ReadUnlock() {
+  if (mReadLock && mReadLocked) {
+    mReadLock->ReadUnlock();
+    mReadLocked = false;
+  }
+}
+
+bool TextureHost::NeedsYFlip() const {
+  return bool(mFlags & TextureFlags::ORIGIN_BOTTOM_LEFT);
+}
+
+void BufferTextureHost::UnbindTextureSource() {
+  // This texture is not used by any layer anymore.
+  // If the texture has an intermediate buffer we don't care either because
+  // texture uploads are also performed synchronously for BufferTextureHost.
+  ReadUnlock();
+}
+
+gfx::SurfaceFormat BufferTextureHost::GetFormat() const { return mFormat; }
+
+gfx::YUVColorSpace BufferTextureHost::GetYUVColorSpace() const {
+  if (mFormat == gfx::SurfaceFormat::YUV) {
+    const YCbCrDescriptor& desc = mDescriptor.get_YCbCrDescriptor();
+    return desc.yUVColorSpace();
+  }
+  return gfx::YUVColorSpace::Identity;
+}
+
+gfx::ColorDepth BufferTextureHost::GetColorDepth() const {
+  if (mFormat == gfx::SurfaceFormat::YUV) {
+    const YCbCrDescriptor& desc = mDescriptor.get_YCbCrDescriptor();
+    return desc.colorDepth();
+  }
+  return gfx::ColorDepth::COLOR_8;
+}
+
+gfx::ColorRange BufferTextureHost::GetColorRange() const {
+  if (mFormat == gfx::SurfaceFormat::YUV) {
+    const YCbCrDescriptor& desc = mDescriptor.get_YCbCrDescriptor();
+    return desc.colorRange();
+  }
+  return TextureHost::GetColorRange();
+}
+
+already_AddRefed<gfx::DataSourceSurface> BufferTextureHost::GetAsSurface() {
+  RefPtr<gfx::DataSourceSurface> result;
+  if (mFormat == gfx::SurfaceFormat::UNKNOWN) {
+    NS_WARNING("BufferTextureHost: unsupported format!");
+    return nullptr;
+  } else if (mFormat == gfx::SurfaceFormat::YUV) {
+    result = ImageDataSerializer::DataSourceSurfaceFromYCbCrDescriptor(
+        GetBuffer(), mDescriptor.get_YCbCrDescriptor());
+    if (NS_WARN_IF(!result)) {
+      return nullptr;
+    }
+  } else {
+    result = gfx::Factory::CreateWrappingDataSourceSurface(
+        GetBuffer(),
+        ImageDataSerializer::GetRGBStride(mDescriptor.get_RGBDescriptor()),
+        mSize, mFormat);
+  }
+  return result.forget();
+}
+
+ShmemTextureHost::ShmemTextureHost(const ipc::Shmem& aShmem,
+                                   const BufferDescriptor& aDesc,
+                                   ISurfaceAllocator* aDeallocator,
+                                   TextureFlags aFlags)
+    : BufferTextureHost(aDesc, aFlags), mDeallocator(aDeallocator) {
+  if (aShmem.IsReadable()) {
+    mShmem = MakeUnique<ipc::Shmem>(aShmem);
+  } else {
+    // This can happen if we failed to map the shmem on this process, perhaps
+    // because it was big and we didn't have enough contiguous address space
+    // available, even though we did on the child process.
+    // As a result this texture will be in an invalid state and Lock will
+    // always fail.
+
+    gfxCriticalNote << "Failed to create a valid ShmemTextureHost";
+  }
+
+  MOZ_COUNT_CTOR(ShmemTextureHost);
+}
+
+ShmemTextureHost::~ShmemTextureHost() {
+  MOZ_ASSERT(!mShmem || (mFlags & TextureFlags::DEALLOCATE_CLIENT),
+             "Leaking our buffer");
+  DeallocateDeviceData();
+  MOZ_COUNT_DTOR(ShmemTextureHost);
+}
+
+void ShmemTextureHost::DeallocateSharedData() {
+  if (mShmem) {
+    MOZ_ASSERT(mDeallocator,
+               "Shared memory would leak without a ISurfaceAllocator");
+    mDeallocator->AsShmemAllocator()->DeallocShmem(*mShmem);
+    mShmem = nullptr;
+  }
+}
+
+void ShmemTextureHost::ForgetSharedData() {
+  if (mShmem) {
+    mShmem = nullptr;
+  }
+}
+
+void ShmemTextureHost::OnShutdown() { mShmem = nullptr; }
+
+uint8_t* ShmemTextureHost::GetBuffer() {
+  return mShmem ? mShmem->get<uint8_t>() : nullptr;
+}
+
+size_t ShmemTextureHost::GetBufferSize() {
+  return mShmem ? mShmem->Size<uint8_t>() : 0;
+}
+
+MemoryTextureHost::MemoryTextureHost(uint8_t* aBuffer,
+                                     const BufferDescriptor& aDesc,
+                                     TextureFlags aFlags)
+    : BufferTextureHost(aDesc, aFlags), mBuffer(aBuffer) {
+  MOZ_COUNT_CTOR(MemoryTextureHost);
+}
+
+MemoryTextureHost::~MemoryTextureHost() {
+  MOZ_ASSERT(!mBuffer || (mFlags & TextureFlags::DEALLOCATE_CLIENT),
+             "Leaking our buffer");
+  DeallocateDeviceData();
+  MOZ_COUNT_DTOR(MemoryTextureHost);
+}
+
+void MemoryTextureHost::DeallocateSharedData() {
+  if (mBuffer) {
+    GfxMemoryImageReporter::WillFree(mBuffer);
+  }
+  delete[] mBuffer;
+  mBuffer = nullptr;
+}
+
+void MemoryTextureHost::ForgetSharedData() { mBuffer = nullptr; }
+
+uint8_t* MemoryTextureHost::GetBuffer() { return mBuffer; }
+
+size_t MemoryTextureHost::GetBufferSize() {
+  // MemoryTextureHost just trusts that the buffer size is large enough to read
+  // anything we need to. That's because MemoryTextureHost has to trust the
+  // buffer pointer anyway, so the security model here is just that
+  // MemoryTexture's are restricted to same-process clients.
+  return std::numeric_limits<size_t>::max();
+}
+
+TextureParent::TextureParent(HostIPCAllocator* aSurfaceAllocator,
+                             const dom::ContentParentId& aContentId,
+                             uint64_t aSerial,
+                             const wr::MaybeExternalImageId& aExternalImageId)
+    : mSurfaceAllocator(aSurfaceAllocator),
+      mContentId(aContentId),
+      mSerial(aSerial),
+      mExternalImageId(aExternalImageId) {
+  MOZ_COUNT_CTOR(TextureParent);
+}
+
+TextureParent::~TextureParent() { MOZ_COUNT_DTOR(TextureParent); }
+
+void TextureParent::NotifyNotUsed(uint64_t aTransactionId) {
+  if (!mTextureHost) {
+    return;
+  }
+  mSurfaceAllocator->NotifyNotUsed(this, aTransactionId);
+}
+
+bool TextureParent::Init(const SurfaceDescriptor& aSharedData,
+                         ReadLockDescriptor&& aReadLock,
+                         const LayersBackend& aBackend,
+                         const TextureFlags& aFlags) {
+  mTextureHost =
+      TextureHost::Create(aSharedData, std::move(aReadLock), mSurfaceAllocator,
+                          aBackend, aFlags, mExternalImageId);
+  if (mTextureHost) {
+    mTextureHost->mActor = this;
+  }
+
+  return !!mTextureHost;
+}
+
+void TextureParent::Destroy() {
+  if (!mTextureHost) {
+    return;
+  }
+
+  if (mTextureHost->mReadLocked) {
+    // ReadUnlock here to make sure the ReadLock's shmem does not outlive the
+    // protocol that created it.
+    mTextureHost->ReadUnlock();
+  }
+
+  if (mTextureHost->GetFlags() & TextureFlags::DEALLOCATE_CLIENT) {
+    mTextureHost->ForgetSharedData();
+  }
+
+  mTextureHost->mActor = nullptr;
+  mTextureHost = nullptr;
+}
+
+void TextureHost::ReceivedDestroy(PTextureParent* aActor) {
+  static_cast<TextureParent*>(aActor)->RecvDestroy();
+}
+
+mozilla::ipc::IPCResult TextureParent::RecvRecycleTexture(
+    const TextureFlags& aTextureFlags) {
+  if (!mTextureHost) {
+    return IPC_OK();
+  }
+  mTextureHost->RecycleTexture(aTextureFlags);
+  return IPC_OK();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+}  // namespace layers
+}  // namespace mozilla