void
CompositableParentManager::ReturnTextureDataIfNecessary(CompositableHost* aCompositable,
                                                        EditReplyVector& replyv,
                                                        PCompositableParent* aParent)
{
  if (!aCompositable || !aCompositable->GetCompositableBackendSpecificData()) {
    return;
  }

  const std::vector< RefPtr<TextureHost> > textureList =
        aCompositable->GetCompositableBackendSpecificData()->GetPendingReleaseFenceTextureList();
  // Return pending Texture data
  for (size_t i = 0; i < textureList.size(); i++) {
    // File descriptor number is limited to 4 per IPC message.
    // See Bug 986253
    if (mPrevFenceHandles.size() >= 4) {
      break;
    }
    TextureHostOGL* hostOGL = textureList[i]->AsHostOGL();
    PTextureParent* actor = textureList[i]->GetIPDLActor();
    if (!hostOGL || !actor) {
      continue;
    }
    android::sp<android::Fence> fence = hostOGL->GetAndResetReleaseFence();
    if (fence.get() && fence->isValid()) {
      FenceHandle handle = FenceHandle(fence);
      replyv.push_back(ReturnReleaseFence(aParent, nullptr, actor, nullptr, handle));
      // Hold fence handle to prevent fence's file descriptor is closed before IPC happens.
      mPrevFenceHandles.push_back(handle);
    }
  }
  aCompositable->GetCompositableBackendSpecificData()->ClearPendingReleaseFenceTextureList();
}
bool
CompositableParentManager::ReceiveCompositableUpdate(const CompositableOperation& aEdit,
                                                     EditReplyVector& replyv)
{
  switch (aEdit.type()) {
    case CompositableOperation::TOpCreatedIncrementalTexture: {
      MOZ_LAYERS_LOG(("[ParentSide] Created texture"));
      const OpCreatedIncrementalTexture& op = aEdit.get_OpCreatedIncrementalTexture();
      CompositableHost* compositable = AsCompositable(op);

      bool success =
        compositable->CreatedIncrementalTexture(this,
                                                op.textureInfo(),
                                                op.bufferRect());
      if (!success) {
        return false;
      }
      break;
    }
    case CompositableOperation::TOpPaintTextureRegion: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ThebesLayer"));

      const OpPaintTextureRegion& op = aEdit.get_OpPaintTextureRegion();
      CompositableHost* compositable = AsCompositable(op);
      Layer* layer = compositable->GetLayer();
      if (!layer || layer->GetType() != Layer::TYPE_THEBES) {
        return false;
      }
      ThebesLayerComposite* thebes = static_cast<ThebesLayerComposite*>(layer);

      const ThebesBufferData& bufferData = op.bufferData();

      RenderTraceInvalidateStart(thebes, "FF00FF", op.updatedRegion().GetBounds());

      nsIntRegion frontUpdatedRegion;
      if (!compositable->UpdateThebes(bufferData,
                                      op.updatedRegion(),
                                      thebes->GetValidRegion(),
                                      &frontUpdatedRegion))
      {
        return false;
      }
      replyv.push_back(
        OpContentBufferSwap(op.compositableParent(), nullptr, frontUpdatedRegion));

      RenderTraceInvalidateEnd(thebes, "FF00FF");
      break;
    }
    case CompositableOperation::TOpPaintTextureIncremental: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ThebesLayer"));

      const OpPaintTextureIncremental& op = aEdit.get_OpPaintTextureIncremental();

      CompositableHost* compositable = AsCompositable(op);

      SurfaceDescriptor desc = op.image();

      compositable->UpdateIncremental(op.textureId(),
                                      desc,
                                      op.updatedRegion(),
                                      op.bufferRect(),
                                      op.bufferRotation());
      break;
    }
    case CompositableOperation::TOpUpdatePictureRect: {
      const OpUpdatePictureRect& op = aEdit.get_OpUpdatePictureRect();
      CompositableHost* compositable = AsCompositable(op);
      MOZ_ASSERT(compositable);
      compositable->SetPictureRect(op.picture());
      break;
    }
    case CompositableOperation::TOpUseTiledLayerBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint TiledLayerBuffer"));
      const OpUseTiledLayerBuffer& op = aEdit.get_OpUseTiledLayerBuffer();
      CompositableHost* compositable = AsCompositable(op);

      TiledLayerComposer* tileComposer = compositable->AsTiledLayerComposer();
      NS_ASSERTION(tileComposer, "compositable is not a tile composer");

      const SurfaceDescriptorTiles& tileDesc = op.tileLayerDescriptor();
      tileComposer->UseTiledLayerBuffer(this, tileDesc);
      break;
    }
    case CompositableOperation::TOpRemoveTexture: {
      const OpRemoveTexture& op = aEdit.get_OpRemoveTexture();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> tex = TextureHost::AsTextureHost(op.textureParent());

      MOZ_ASSERT(tex.get());
      compositable->RemoveTextureHost(tex);
      // send FenceHandle if present.
      TextureHost::SendFenceHandleIfPresent(op.textureParent());
      break;
    }
    case CompositableOperation::TOpRemoveTextureAsync: {
      const OpRemoveTextureAsync& op = aEdit.get_OpRemoveTextureAsync();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> tex = TextureHost::AsTextureHost(op.textureParent());

      MOZ_ASSERT(tex.get());
      compositable->RemoveTextureHost(tex);

      if (!IsAsync() && GetChildProcessId()) {
        // send FenceHandle if present via ImageBridge.
        ImageBridgeParent::SendFenceHandleToTrackerIfPresent(
                             GetChildProcessId(),
                             op.holderId(),
                             op.transactionId(),
                             op.textureParent());

        // If the message is recievied via PLayerTransaction,
        // Send message back via PImageBridge.
        ImageBridgeParent::ReplyRemoveTexture(
                             GetChildProcessId(),
                             OpReplyRemoveTexture(true, // isMain
                                                  op.holderId(),
                                                  op.transactionId()));
      } else {
        // send FenceHandle if present.
        TextureHost::SendFenceHandleIfPresent(op.textureParent());

        ReplyRemoveTexture(OpReplyRemoveTexture(false, // isMain
                                                op.holderId(),
                                                op.transactionId()));
      }
      break;
    }
    case CompositableOperation::TOpUseTexture: {
      const OpUseTexture& op = aEdit.get_OpUseTexture();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> tex = TextureHost::AsTextureHost(op.textureParent());

      MOZ_ASSERT(tex.get());
      compositable->UseTextureHost(tex);

      if (IsAsync()) {
        ScheduleComposition(op);
        // Async layer updates don't trigger invalidation, manually tell the layer
        // that its content have changed.
        if (compositable->GetLayer()) {
          compositable->GetLayer()->SetInvalidRectToVisibleRegion();
        }
      }
      break;
    }
    case CompositableOperation::TOpUseComponentAlphaTextures: {
      const OpUseComponentAlphaTextures& op = aEdit.get_OpUseComponentAlphaTextures();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> texOnBlack = TextureHost::AsTextureHost(op.textureOnBlackParent());
      RefPtr<TextureHost> texOnWhite = TextureHost::AsTextureHost(op.textureOnWhiteParent());

      MOZ_ASSERT(texOnBlack && texOnWhite);
      compositable->UseComponentAlphaTextures(texOnBlack, texOnWhite);

      if (IsAsync()) {
        ScheduleComposition(op);
      }
      break;
    }
#ifdef MOZ_WIDGET_GONK
    case CompositableOperation::TOpUseOverlaySource: {
      const OpUseOverlaySource& op = aEdit.get_OpUseOverlaySource();
      CompositableHost* compositable = AsCompositable(op);
      MOZ_ASSERT(compositable->GetType() == CompositableType::IMAGE_OVERLAY, "Invalid operation!");
      compositable->UseOverlaySource(op.overlay());
      break;
    }
#endif
    case CompositableOperation::TOpUpdateTexture: {
      const OpUpdateTexture& op = aEdit.get_OpUpdateTexture();
      RefPtr<TextureHost> texture = TextureHost::AsTextureHost(op.textureParent());
      MOZ_ASSERT(texture);

      texture->Updated(op.region().type() == MaybeRegion::TnsIntRegion
                       ? &op.region().get_nsIntRegion()
                       : nullptr); // no region means invalidate the entire surface
      break;
    }

    default: {
      MOZ_ASSERT(false, "bad type");
    }
  }

  return true;
}
bool
ShadowLayersParent::RecvUpdate(const InfallibleTArray<Edit>& cset,
                               const TargetConfig& targetConfig,
                               const bool& isFirstPaint,
                               InfallibleTArray<EditReply>* reply)
{
#ifdef COMPOSITOR_PERFORMANCE_WARNING
  TimeStamp updateStart = TimeStamp::Now();
#endif

  MOZ_LAYERS_LOG(("[ParentSide] received txn with %d edits", cset.Length()));

  if (mDestroyed || layer_manager()->IsDestroyed()) {
    return true;
  }

  EditReplyVector replyv;

  layer_manager()->BeginTransactionWithTarget(NULL);

  for (EditArray::index_type i = 0; i < cset.Length(); ++i) {
    const Edit& edit = cset[i];

    switch (edit.type()) {
      // Create* ops
    case Edit::TOpCreateThebesLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateThebesLayer"));

      nsRefPtr<ShadowThebesLayer> layer =
        layer_manager()->CreateShadowThebesLayer();
      layer->SetAllocator(this);
      AsShadowLayer(edit.get_OpCreateThebesLayer())->Bind(layer);
      break;
    }
    case Edit::TOpCreateContainerLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateContainerLayer"));

      nsRefPtr<ContainerLayer> layer = layer_manager()->CreateShadowContainerLayer();
      AsShadowLayer(edit.get_OpCreateContainerLayer())->Bind(layer);
      break;
    }
    case Edit::TOpCreateImageLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateImageLayer"));

      nsRefPtr<ShadowImageLayer> layer =
        layer_manager()->CreateShadowImageLayer();
      AsShadowLayer(edit.get_OpCreateImageLayer())->Bind(layer);
      break;
    }
    case Edit::TOpCreateColorLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateColorLayer"));

      nsRefPtr<ShadowColorLayer> layer = layer_manager()->CreateShadowColorLayer();
      AsShadowLayer(edit.get_OpCreateColorLayer())->Bind(layer);
      break;
    }
    case Edit::TOpCreateCanvasLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateCanvasLayer"));

      nsRefPtr<ShadowCanvasLayer> layer = 
        layer_manager()->CreateShadowCanvasLayer();
      layer->SetAllocator(this);
      AsShadowLayer(edit.get_OpCreateCanvasLayer())->Bind(layer);
      break;
    }
    case Edit::TOpCreateRefLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateRefLayer"));

      nsRefPtr<ShadowRefLayer> layer =
        layer_manager()->CreateShadowRefLayer();
      layer->SetAllocator(this);
      AsShadowLayer(edit.get_OpCreateRefLayer())->Bind(layer);
      break;
    }

      // Attributes
    case Edit::TOpSetLayerAttributes: {
      MOZ_LAYERS_LOG(("[ParentSide] SetLayerAttributes"));

      const OpSetLayerAttributes& osla = edit.get_OpSetLayerAttributes();
      Layer* layer = AsShadowLayer(osla)->AsLayer();
      const LayerAttributes& attrs = osla.attrs();

      const CommonLayerAttributes& common = attrs.common();
      layer->SetVisibleRegion(common.visibleRegion());
      layer->SetContentFlags(common.contentFlags());
      layer->SetOpacity(common.opacity());
      layer->SetClipRect(common.useClipRect() ? &common.clipRect() : NULL);
      layer->SetBaseTransform(common.transform().value());
      layer->SetPostScale(common.postXScale(), common.postYScale());
      static bool fixedPositionLayersEnabled = getenv("MOZ_ENABLE_FIXED_POSITION_LAYERS") != 0;
      if (fixedPositionLayersEnabled) {
        layer->SetIsFixedPosition(common.isFixedPosition());
        layer->SetFixedPositionAnchor(common.fixedPositionAnchor());
      }
      if (PLayerParent* maskLayer = common.maskLayerParent()) {
        layer->SetMaskLayer(cast(maskLayer)->AsLayer());
      } else {
        layer->SetMaskLayer(NULL);
      }
      layer->SetAnimations(common.animations());

      typedef SpecificLayerAttributes Specific;
      const SpecificLayerAttributes& specific = attrs.specific();
      switch (specific.type()) {
      case Specific::Tnull_t:
        break;

      case Specific::TThebesLayerAttributes: {
        MOZ_LAYERS_LOG(("[ParentSide]   thebes layer"));

        ShadowThebesLayer* thebesLayer =
          static_cast<ShadowThebesLayer*>(layer);
        const ThebesLayerAttributes& attrs =
          specific.get_ThebesLayerAttributes();

        thebesLayer->SetValidRegion(attrs.validRegion());

        break;
      }
      case Specific::TContainerLayerAttributes: {
        MOZ_LAYERS_LOG(("[ParentSide]   container layer"));

        ContainerLayer* containerLayer =
          static_cast<ContainerLayer*>(layer);
        const ContainerLayerAttributes& attrs =
          specific.get_ContainerLayerAttributes();
        containerLayer->SetFrameMetrics(attrs.metrics());
        containerLayer->SetPreScale(attrs.preXScale(), attrs.preYScale());
        break;
      }
      case Specific::TColorLayerAttributes:
        MOZ_LAYERS_LOG(("[ParentSide]   color layer"));

        static_cast<ColorLayer*>(layer)->SetColor(
          specific.get_ColorLayerAttributes().color().value());
        break;

      case Specific::TCanvasLayerAttributes:
        MOZ_LAYERS_LOG(("[ParentSide]   canvas layer"));

        static_cast<CanvasLayer*>(layer)->SetFilter(
          specific.get_CanvasLayerAttributes().filter());
        break;

      case Specific::TRefLayerAttributes:
        MOZ_LAYERS_LOG(("[ParentSide]   ref layer"));

        static_cast<RefLayer*>(layer)->SetReferentId(
          specific.get_RefLayerAttributes().id());
        break;

      case Specific::TImageLayerAttributes: {
        MOZ_LAYERS_LOG(("[ParentSide]   image layer"));

        ImageLayer* imageLayer = static_cast<ImageLayer*>(layer);
        const ImageLayerAttributes& attrs = specific.get_ImageLayerAttributes();
        imageLayer->SetFilter(attrs.filter());
        imageLayer->SetForceSingleTile(attrs.forceSingleTile());
        break;
      }
      default:
        NS_RUNTIMEABORT("not reached");
      }
      break;
    }

      // Tree ops
    case Edit::TOpSetRoot: {
      MOZ_LAYERS_LOG(("[ParentSide] SetRoot"));

      mRoot = AsShadowLayer(edit.get_OpSetRoot())->AsContainer();
      break;
    }
    case Edit::TOpInsertAfter: {
      MOZ_LAYERS_LOG(("[ParentSide] InsertAfter"));

      const OpInsertAfter& oia = edit.get_OpInsertAfter();
      ShadowContainer(oia)->AsContainer()->InsertAfter(
        ShadowChild(oia)->AsLayer(), ShadowAfter(oia)->AsLayer());
      break;
    }
    case Edit::TOpAppendChild: {
      MOZ_LAYERS_LOG(("[ParentSide] AppendChild"));

      const OpAppendChild& oac = edit.get_OpAppendChild();
      ShadowContainer(oac)->AsContainer()->InsertAfter(
        ShadowChild(oac)->AsLayer(), NULL);
      break;
    }
    case Edit::TOpRemoveChild: {
      MOZ_LAYERS_LOG(("[ParentSide] RemoveChild"));

      const OpRemoveChild& orc = edit.get_OpRemoveChild();
      Layer* childLayer = ShadowChild(orc)->AsLayer();
      ShadowContainer(orc)->AsContainer()->RemoveChild(childLayer);
      break;
    }
    case Edit::TOpRepositionChild: {
      MOZ_LAYERS_LOG(("[ParentSide] RepositionChild"));

      const OpRepositionChild& orc = edit.get_OpRepositionChild();
      ShadowContainer(orc)->AsContainer()->RepositionChild(
        ShadowChild(orc)->AsLayer(), ShadowAfter(orc)->AsLayer());
      break;
    }
    case Edit::TOpRaiseToTopChild: {
      MOZ_LAYERS_LOG(("[ParentSide] RaiseToTopChild"));

      const OpRaiseToTopChild& rtc = edit.get_OpRaiseToTopChild();
      ShadowContainer(rtc)->AsContainer()->RepositionChild(
        ShadowChild(rtc)->AsLayer(), NULL);
      break;
    }

    case Edit::TOpPaintTiledLayerBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint TiledLayerBuffer"));
      const OpPaintTiledLayerBuffer& op = edit.get_OpPaintTiledLayerBuffer();
      ShadowLayerParent* shadow = AsShadowLayer(op);

      ShadowThebesLayer* shadowLayer = static_cast<ShadowThebesLayer*>(shadow->AsLayer());
      TiledLayerComposer* tileComposer = shadowLayer->AsTiledLayerComposer();

      NS_ASSERTION(tileComposer, "shadowLayer is not a tile composer");

      BasicTiledLayerBuffer* p = (BasicTiledLayerBuffer*)op.tiledLayerBuffer();
      tileComposer->PaintedTiledLayerBuffer(p);
      break;
    }
    case Edit::TOpPaintThebesBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ThebesLayer"));

      const OpPaintThebesBuffer& op = edit.get_OpPaintThebesBuffer();
      ShadowLayerParent* shadow = AsShadowLayer(op);
      ShadowThebesLayer* thebes =
        static_cast<ShadowThebesLayer*>(shadow->AsLayer());
      const ThebesBuffer& newFront = op.newFrontBuffer();

      RenderTraceInvalidateStart(thebes, "FF00FF", op.updatedRegion().GetBounds());

      OptionalThebesBuffer newBack;
      nsIntRegion newValidRegion;
      OptionalThebesBuffer readonlyFront;
      nsIntRegion frontUpdatedRegion;
      thebes->Swap(newFront, op.updatedRegion(),
                   &newBack, &newValidRegion,
                   &readonlyFront, &frontUpdatedRegion);
      replyv.push_back(
        OpThebesBufferSwap(
          shadow, NULL,
          newBack, newValidRegion,
          readonlyFront, frontUpdatedRegion));

      RenderTraceInvalidateEnd(thebes, "FF00FF");
      break;
    }
    case Edit::TOpPaintCanvas: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint CanvasLayer"));

      const OpPaintCanvas& op = edit.get_OpPaintCanvas();
      ShadowLayerParent* shadow = AsShadowLayer(op);
      ShadowCanvasLayer* canvas =
        static_cast<ShadowCanvasLayer*>(shadow->AsLayer());

      RenderTraceInvalidateStart(canvas, "FF00FF", canvas->GetVisibleRegion().GetBounds());

      canvas->SetAllocator(this);
      CanvasSurface newBack;
      canvas->Swap(op.newFrontBuffer(), op.needYFlip(), &newBack);
      canvas->Updated();
      replyv.push_back(OpBufferSwap(shadow, NULL,
                                    newBack));

      RenderTraceInvalidateEnd(canvas, "FF00FF");
      break;
    }
    case Edit::TOpPaintImage: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ImageLayer"));

      const OpPaintImage& op = edit.get_OpPaintImage();
      ShadowLayerParent* shadow = AsShadowLayer(op);
      ShadowImageLayer* image =
        static_cast<ShadowImageLayer*>(shadow->AsLayer());

      RenderTraceInvalidateStart(image, "FF00FF", image->GetVisibleRegion().GetBounds());

      image->SetAllocator(this);
      SharedImage newBack;
      image->Swap(op.newFrontBuffer(), &newBack);
      replyv.push_back(OpImageSwap(shadow, NULL,
                                   newBack));

      RenderTraceInvalidateEnd(image, "FF00FF");
      break;
    }

    default:
      NS_RUNTIMEABORT("not reached");
    }
  }

  layer_manager()->EndTransaction(NULL, NULL, LayerManager::END_NO_IMMEDIATE_REDRAW);

  reply->SetCapacity(replyv.size());
  if (replyv.size() > 0) {
    reply->AppendElements(&replyv.front(), replyv.size());
  }

  // Ensure that any pending operations involving back and front
  // buffers have completed, so that neither process stomps on the
  // other's buffer contents.
  ShadowLayerManager::PlatformSyncBeforeReplyUpdate();

  mShadowLayersManager->ShadowLayersUpdated(this, targetConfig, isFirstPaint);

#ifdef COMPOSITOR_PERFORMANCE_WARNING
  int compositeTime = (int)(mozilla::TimeStamp::Now() - updateStart).ToMilliseconds();
  if (compositeTime > 15) {
    printf_stderr("Compositor: Layers update took %i ms (blocking gecko).\n", compositeTime);
  }
#endif

  return true;
}
bool
ShadowLayersParent::RecvUpdate(const InfallibleTArray<Edit>& cset,
                               InfallibleTArray<EditReply>* reply)
{
  MOZ_LAYERS_LOG(("[ParentSide] received txn with %d edits", cset.Length()));

  if (mDestroyed || layer_manager()->IsDestroyed()) {
    return true;
  }

  EditReplyVector replyv;

  layer_manager()->BeginTransactionWithTarget(NULL);

  for (EditArray::index_type i = 0; i < cset.Length(); ++i) {
    const Edit& edit = cset[i];

    switch (edit.type()) {
      // Create* ops
    case Edit::TOpCreateThebesLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateThebesLayer"));

      nsRefPtr<ShadowThebesLayer> layer =
        layer_manager()->CreateShadowThebesLayer();
      layer->SetAllocator(this);
      AsShadowLayer(edit.get_OpCreateThebesLayer())->Bind(layer);
      break;
    }
    case Edit::TOpCreateContainerLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateContainerLayer"));

      nsRefPtr<ContainerLayer> layer = layer_manager()->CreateShadowContainerLayer();
      AsShadowLayer(edit.get_OpCreateContainerLayer())->Bind(layer);
      break;
    }
    case Edit::TOpCreateImageLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateImageLayer"));

      nsRefPtr<ShadowImageLayer> layer =
        layer_manager()->CreateShadowImageLayer();
      layer->SetAllocator(this);
      AsShadowLayer(edit.get_OpCreateImageLayer())->Bind(layer);
      break;
    }
    case Edit::TOpCreateColorLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateColorLayer"));

      nsRefPtr<ShadowColorLayer> layer = layer_manager()->CreateShadowColorLayer();
      AsShadowLayer(edit.get_OpCreateColorLayer())->Bind(layer);
      break;
    }
    case Edit::TOpCreateCanvasLayer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateCanvasLayer"));

      nsRefPtr<ShadowCanvasLayer> layer = 
        layer_manager()->CreateShadowCanvasLayer();
      layer->SetAllocator(this);
      AsShadowLayer(edit.get_OpCreateCanvasLayer())->Bind(layer);
      break;
    }
    case Edit::TOpCreateThebesBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateThebesBuffer"));

      const OpCreateThebesBuffer& otb = edit.get_OpCreateThebesBuffer();
      ShadowThebesLayer* thebes = static_cast<ShadowThebesLayer*>(
        AsShadowLayer(otb)->AsLayer());

      thebes->SetFrontBuffer(otb.initialFront(), otb.frontValidRegion());

      break;
    }
    case Edit::TOpCreateCanvasBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateCanvasBuffer"));

      const OpCreateCanvasBuffer& ocb = edit.get_OpCreateCanvasBuffer();
      ShadowCanvasLayer* canvas = static_cast<ShadowCanvasLayer*>(
        AsShadowLayer(ocb)->AsLayer());

      canvas->Init(ocb.initialFront(), ocb.size(), ocb.needYFlip());

      break;
    }
    case Edit::TOpCreateImageBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] CreateImageBuffer"));

      const OpCreateImageBuffer ocb = edit.get_OpCreateImageBuffer();
      ShadowImageLayer* image = static_cast<ShadowImageLayer*>(
        AsShadowLayer(ocb)->AsLayer());

      image->Init(ocb.initialFront(), ocb.size());

      break;
    }
    case Edit::TOpDestroyThebesFrontBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] DestroyThebesFrontBuffer"));

      const OpDestroyThebesFrontBuffer& odfb =
        edit.get_OpDestroyThebesFrontBuffer();
      ShadowThebesLayer* thebes = static_cast<ShadowThebesLayer*>(
        AsShadowLayer(odfb)->AsLayer());

      thebes->DestroyFrontBuffer();

      break;
    }
    case Edit::TOpDestroyCanvasFrontBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] DestroyCanvasFrontBuffer"));

      const OpDestroyCanvasFrontBuffer& odfb =
        edit.get_OpDestroyCanvasFrontBuffer();
      ShadowCanvasLayer* canvas = static_cast<ShadowCanvasLayer*>(
        AsShadowLayer(odfb)->AsLayer());

      canvas->DestroyFrontBuffer();

      break;
    }
    case Edit::TOpDestroyImageFrontBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] DestroyImageFrontBuffer"));

      const OpDestroyImageFrontBuffer& odfb =
        edit.get_OpDestroyImageFrontBuffer();
      ShadowImageLayer* image = static_cast<ShadowImageLayer*>(
        AsShadowLayer(odfb)->AsLayer());

      image->DestroyFrontBuffer();

      break;
    }

      // Attributes
    case Edit::TOpSetLayerAttributes: {
      MOZ_LAYERS_LOG(("[ParentSide] SetLayerAttributes"));

      const OpSetLayerAttributes& osla = edit.get_OpSetLayerAttributes();
      Layer* layer = AsShadowLayer(osla)->AsLayer();
      const LayerAttributes& attrs = osla.attrs();

      const CommonLayerAttributes& common = attrs.common();
      layer->SetVisibleRegion(common.visibleRegion());
      layer->SetContentFlags(common.contentFlags());
      layer->SetOpacity(common.opacity());
      layer->SetClipRect(common.useClipRect() ? &common.clipRect() : NULL);
      layer->SetTransform(common.transform());
      layer->SetTileSourceRect(common.useTileSourceRect() ? &common.tileSourceRect() : NULL);
      static bool fixedPositionLayersEnabled = getenv("MOZ_ENABLE_FIXED_POSITION_LAYERS") != 0;
      if (fixedPositionLayersEnabled) {
        layer->SetIsFixedPosition(common.isFixedPosition());
      }

      typedef SpecificLayerAttributes Specific;
      const SpecificLayerAttributes& specific = attrs.specific();
      switch (specific.type()) {
      case Specific::Tnull_t:
        break;

      case Specific::TThebesLayerAttributes: {
        MOZ_LAYERS_LOG(("[ParentSide]   thebes layer"));

        ShadowThebesLayer* thebesLayer =
          static_cast<ShadowThebesLayer*>(layer);
        const ThebesLayerAttributes& attrs =
          specific.get_ThebesLayerAttributes();

        thebesLayer->SetValidRegion(attrs.validRegion());

        break;
      }
      case Specific::TContainerLayerAttributes:
        MOZ_LAYERS_LOG(("[ParentSide]   container layer"));

        static_cast<ContainerLayer*>(layer)->SetFrameMetrics(
          specific.get_ContainerLayerAttributes().metrics());
        break;

      case Specific::TColorLayerAttributes:
        MOZ_LAYERS_LOG(("[ParentSide]   color layer"));

        static_cast<ColorLayer*>(layer)->SetColor(
          specific.get_ColorLayerAttributes().color());
        break;

      case Specific::TCanvasLayerAttributes:
        MOZ_LAYERS_LOG(("[ParentSide]   canvas layer"));

        static_cast<CanvasLayer*>(layer)->SetFilter(
          specific.get_CanvasLayerAttributes().filter());
        break;

      case Specific::TImageLayerAttributes:
        MOZ_LAYERS_LOG(("[ParentSide]   image layer"));

        static_cast<ImageLayer*>(layer)->SetFilter(
          specific.get_ImageLayerAttributes().filter());
        break;

      default:
        NS_RUNTIMEABORT("not reached");
      }
      break;
    }

      // Tree ops
    case Edit::TOpSetRoot: {
      MOZ_LAYERS_LOG(("[ParentSide] SetRoot"));

      mRoot = AsShadowLayer(edit.get_OpSetRoot())->AsContainer();
      break;
    }
    case Edit::TOpInsertAfter: {
      MOZ_LAYERS_LOG(("[ParentSide] InsertAfter"));

      const OpInsertAfter& oia = edit.get_OpInsertAfter();
      ShadowContainer(oia)->AsContainer()->InsertAfter(
        ShadowChild(oia)->AsLayer(), ShadowAfter(oia)->AsLayer());
      break;
    }
    case Edit::TOpAppendChild: {
      MOZ_LAYERS_LOG(("[ParentSide] AppendChild"));

      const OpAppendChild& oac = edit.get_OpAppendChild();
      ShadowContainer(oac)->AsContainer()->InsertAfter(
        ShadowChild(oac)->AsLayer(), NULL);
      break;
    }
    case Edit::TOpRemoveChild: {
      MOZ_LAYERS_LOG(("[ParentSide] RemoveChild"));

      const OpRemoveChild& orc = edit.get_OpRemoveChild();
      Layer* childLayer = ShadowChild(orc)->AsLayer();
      ShadowContainer(orc)->AsContainer()->RemoveChild(childLayer);
      break;
    }

    case Edit::TOpPaintThebesBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ThebesLayer"));

      const OpPaintThebesBuffer& op = edit.get_OpPaintThebesBuffer();
      ShadowLayerParent* shadow = AsShadowLayer(op);
      ShadowThebesLayer* thebes =
        static_cast<ShadowThebesLayer*>(shadow->AsLayer());
      const ThebesBuffer& newFront = op.newFrontBuffer();

      ThebesBuffer newBack;
      nsIntRegion newValidRegion;
      OptionalThebesBuffer readonlyFront;
      nsIntRegion frontUpdatedRegion;
      thebes->Swap(newFront, op.updatedRegion(),
                   &newBack, &newValidRegion,
                   &readonlyFront, &frontUpdatedRegion);
      replyv.push_back(
        OpThebesBufferSwap(
          shadow, NULL,
          newBack, newValidRegion,
          readonlyFront, frontUpdatedRegion));
      break;
    }
    case Edit::TOpPaintCanvas: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint CanvasLayer"));

      const OpPaintCanvas& op = edit.get_OpPaintCanvas();
      ShadowLayerParent* shadow = AsShadowLayer(op);
      ShadowCanvasLayer* canvas =
        static_cast<ShadowCanvasLayer*>(shadow->AsLayer());

      SurfaceDescriptor newFront = op.newFrontBuffer();
      SurfaceDescriptor newBack;
      canvas->Swap(op.newFrontBuffer(), &newBack);
      if (newFront == newBack) {
        newFront = SurfaceDescriptor();
      }

      canvas->Updated();

      replyv.push_back(OpBufferSwap(shadow, NULL,
                                    newBack));

      break;
    }
    case Edit::TOpPaintImage: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ImageLayer"));

      const OpPaintImage& op = edit.get_OpPaintImage();
      ShadowLayerParent* shadow = AsShadowLayer(op);
      ShadowImageLayer* image =
        static_cast<ShadowImageLayer*>(shadow->AsLayer());

      SharedImage newFront = op.newFrontBuffer();
      SharedImage newBack;
      image->Swap(op.newFrontBuffer(), &newBack);
      if (newFront == newBack) {
        newFront = SharedImage();
      }

      replyv.push_back(OpImageSwap(shadow, NULL,
                                   newBack));

      break;
    }

    default:
      NS_RUNTIMEABORT("not reached");
    }
  }

  layer_manager()->EndTransaction(NULL, NULL);

  reply->SetCapacity(replyv.size());
  if (replyv.size() > 0) {
    reply->AppendElements(&replyv.front(), replyv.size());
  }

  // Ensure that any pending operations involving back and front
  // buffers have completed, so that neither process stomps on the
  // other's buffer contents.
  ShadowLayerManager::PlatformSyncBeforeReplyUpdate();

  Frame()->ShadowLayersUpdated();

  return true;
}
bool
CompositableParentManager::ReceiveCompositableUpdate(const CompositableOperation& aEdit,
                                                     EditReplyVector& replyv)
{
  switch (aEdit.type()) {
    case CompositableOperation::TOpCreatedTexture: {
      MOZ_LAYERS_LOG(("[ParentSide] Created texture"));
      const OpCreatedTexture& op = aEdit.get_OpCreatedTexture();
      CompositableParent* compositableParent =
        static_cast<CompositableParent*>(op.compositableParent());
      CompositableHost* compositable = compositableParent->GetCompositableHost();

      compositable->EnsureDeprecatedTextureHost(op.textureId(), op.descriptor(),
                                      compositableParent->GetCompositableManager(),
                                      op.textureInfo());

      break;
    }
    case CompositableOperation::TOpCreatedIncrementalTexture: {
      MOZ_LAYERS_LOG(("[ParentSide] Created texture"));
      const OpCreatedIncrementalTexture& op = aEdit.get_OpCreatedIncrementalTexture();

      CompositableParent* compositableParent =
        static_cast<CompositableParent*>(op.compositableParent());
      CompositableHost* compositable = compositableParent->GetCompositableHost();

      compositable->EnsureDeprecatedTextureHostIncremental(compositableParent->GetCompositableManager(),
                                                 op.textureInfo(),
                                                 op.bufferRect());
      break;
    }
    case CompositableOperation::TOpDestroyThebesBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Created double buffer"));
      const OpDestroyThebesBuffer& op = aEdit.get_OpDestroyThebesBuffer();
      CompositableParent* compositableParent = static_cast<CompositableParent*>(op.compositableParent());
      CompositableHost* compositableHost = compositableParent->GetCompositableHost();
      if (compositableHost->GetType() != BUFFER_CONTENT &&
          compositableHost->GetType() != BUFFER_CONTENT_DIRECT)
      {
        return false;
      }
      DeprecatedContentHostBase* content = static_cast<DeprecatedContentHostBase*>(compositableHost);
      content->DestroyTextures();

      break;
    }
    case CompositableOperation::TOpPaintTexture: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint Texture X"));
      const OpPaintTexture& op = aEdit.get_OpPaintTexture();

      CompositableParent* compositableParent =
        static_cast<CompositableParent*>(op.compositableParent());
      CompositableHost* compositable =
        compositableParent->GetCompositableHost();

      Layer* layer = compositable ? compositable->GetLayer() : nullptr;
      LayerComposite* shadowLayer = layer ? layer->AsLayerComposite() : nullptr;
      if (shadowLayer) {
        Compositor* compositor = static_cast<LayerManagerComposite*>(layer->Manager())->GetCompositor();
        compositable->SetCompositor(compositor);
        compositable->SetLayer(layer);
      } else {
        // if we reach this branch, it most likely means that async textures
        // are coming in before we had time to attach the compositable to a
        // layer. Don't panic, it is okay in this case. it should not be
        // happening continuously, though.
      }

      if (layer) {
        RenderTraceInvalidateStart(layer, "FF00FF", layer->GetVisibleRegion().GetBounds());
      }

      if (compositable) {
        const SurfaceDescriptor& descriptor = op.image();
        compositable->EnsureDeprecatedTextureHost(op.textureId(),
                                        descriptor,
                                        compositableParent->GetCompositableManager(),
                                        TextureInfo());
        MOZ_ASSERT(compositable->GetDeprecatedTextureHost());

        SurfaceDescriptor newBack;
        bool shouldRecomposite = compositable->Update(descriptor, &newBack);
        if (IsSurfaceDescriptorValid(newBack)) {
          replyv.push_back(OpTextureSwap(compositableParent, nullptr,
                                         op.textureId(), newBack));
        }

        if (IsAsync() && shouldRecomposite) {
          ScheduleComposition(op);
        }
      }

      if (layer) {
        RenderTraceInvalidateEnd(layer, "FF00FF");
      }

      // return texure data to client if necessary
      ReturnTextureDataIfNecessary(compositable, replyv, op.compositableParent());
      break;
    }
    case CompositableOperation::TOpPaintTextureRegion: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ThebesLayer"));

      const OpPaintTextureRegion& op = aEdit.get_OpPaintTextureRegion();
      CompositableParent* compositableParent = static_cast<CompositableParent*>(op.compositableParent());
      CompositableHost* compositable =
        compositableParent->GetCompositableHost();
      Layer* layer = compositable->GetLayer();
      if (!layer || layer->GetType() != Layer::TYPE_THEBES) {
        return false;
      }
      ThebesLayerComposite* thebes = static_cast<ThebesLayerComposite*>(layer);

      const ThebesBufferData& bufferData = op.bufferData();

      RenderTraceInvalidateStart(thebes, "FF00FF", op.updatedRegion().GetBounds());

      nsIntRegion frontUpdatedRegion;
      if (!compositable->UpdateThebes(bufferData,
                                      op.updatedRegion(),
                                      thebes->GetValidRegion(),
                                      &frontUpdatedRegion))
      {
        return false;
      }
      replyv.push_back(
        OpContentBufferSwap(compositableParent, nullptr, frontUpdatedRegion));

      RenderTraceInvalidateEnd(thebes, "FF00FF");
      // return texure data to client if necessary
      ReturnTextureDataIfNecessary(compositable, replyv, op.compositableParent());
      break;
    }
    case CompositableOperation::TOpPaintTextureIncremental: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ThebesLayer"));

      const OpPaintTextureIncremental& op = aEdit.get_OpPaintTextureIncremental();

      CompositableParent* compositableParent = static_cast<CompositableParent*>(op.compositableParent());
      CompositableHost* compositable =
        compositableParent->GetCompositableHost();

      SurfaceDescriptor desc = op.image();

      compositable->UpdateIncremental(op.textureId(),
                                      desc,
                                      op.updatedRegion(),
                                      op.bufferRect(),
                                      op.bufferRotation());
      break;
    }
    case CompositableOperation::TOpUpdatePictureRect: {
      const OpUpdatePictureRect& op = aEdit.get_OpUpdatePictureRect();
      CompositableHost* compositable
       = static_cast<CompositableParent*>(op.compositableParent())->GetCompositableHost();
      MOZ_ASSERT(compositable);
      compositable->SetPictureRect(op.picture());
      break;
    }
    case CompositableOperation::TOpUseTiledLayerBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint TiledLayerBuffer"));
      const OpUseTiledLayerBuffer& op = aEdit.get_OpUseTiledLayerBuffer();
      CompositableParent* compositableParent = static_cast<CompositableParent*>(op.compositableParent());
      CompositableHost* compositable =
        compositableParent->GetCompositableHost();

      TiledLayerComposer* tileComposer = compositable->AsTiledLayerComposer();
      NS_ASSERTION(tileComposer, "compositable is not a tile composer");

      const SurfaceDescriptorTiles& tileDesc = op.tileLayerDescriptor();
      tileComposer->UseTiledLayerBuffer(this, tileDesc);
      break;
    }
    case CompositableOperation::TOpRemoveTexture: {
      const OpRemoveTexture& op = aEdit.get_OpRemoveTexture();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> tex = TextureHost::AsTextureHost(op.textureParent());

      MOZ_ASSERT(tex.get());
      compositable->RemoveTextureHost(tex);
      // return texure data to client if necessary
      ReturnTextureDataIfNecessary(compositable, replyv, op.compositableParent());
      break;
    }
    case CompositableOperation::TOpUseTexture: {
      const OpUseTexture& op = aEdit.get_OpUseTexture();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> tex = TextureHost::AsTextureHost(op.textureParent());

      MOZ_ASSERT(tex.get());
      compositable->UseTextureHost(tex);

      if (IsAsync()) {
        ScheduleComposition(op);
        // Async layer updates don't trigger invalidation, manually tell the layer
        // that its content have changed.
        if (compositable->GetLayer()) {
          compositable->GetLayer()->SetInvalidRectToVisibleRegion();
        }
      }
      // return texure data to client if necessary
      ReturnTextureDataIfNecessary(compositable, replyv, op.compositableParent());
      break;
    }
    case CompositableOperation::TOpUseComponentAlphaTextures: {
      const OpUseComponentAlphaTextures& op = aEdit.get_OpUseComponentAlphaTextures();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> texOnBlack = TextureHost::AsTextureHost(op.textureOnBlackParent());
      RefPtr<TextureHost> texOnWhite = TextureHost::AsTextureHost(op.textureOnWhiteParent());

      MOZ_ASSERT(texOnBlack && texOnWhite);
      compositable->UseComponentAlphaTextures(texOnBlack, texOnWhite);

      if (IsAsync()) {
        ScheduleComposition(op);
      }
      // return texure data to client if necessary
      ReturnTextureDataIfNecessary(compositable, replyv, op.compositableParent());
      break;
    }
    case CompositableOperation::TOpUpdateTexture: {
      const OpUpdateTexture& op = aEdit.get_OpUpdateTexture();
      RefPtr<TextureHost> texture = TextureHost::AsTextureHost(op.textureParent());
      MOZ_ASSERT(texture);

      texture->Updated(op.region().type() == MaybeRegion::TnsIntRegion
                       ? &op.region().get_nsIntRegion()
                       : nullptr); // no region means invalidate the entire surface
      break;
    }

    default: {
      MOZ_ASSERT(false, "bad type");
    }
  }

  return true;
}
bool
CompositableParentManager::ReceiveCompositableUpdate(const CompositableOperation& aEdit,
                                                     EditReplyVector& replyv)
{
  switch (aEdit.type()) {
    case CompositableOperation::TOpPaintTextureRegion: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint PaintedLayer"));

      const OpPaintTextureRegion& op = aEdit.get_OpPaintTextureRegion();
      CompositableHost* compositable = AsCompositable(op);
      Layer* layer = compositable->GetLayer();
      if (!layer || layer->GetType() != Layer::TYPE_PAINTED) {
        return false;
      }
      PaintedLayerComposite* thebes = static_cast<PaintedLayerComposite*>(layer);

      const ThebesBufferData& bufferData = op.bufferData();

      RenderTraceInvalidateStart(thebes, "FF00FF", op.updatedRegion().GetBounds());

      nsIntRegion frontUpdatedRegion;
      if (!compositable->UpdateThebes(bufferData,
                                      op.updatedRegion(),
                                      thebes->GetValidRegion(),
                                      &frontUpdatedRegion))
      {
        return false;
      }
      replyv.push_back(
        OpContentBufferSwap(op.compositableParent(), nullptr, frontUpdatedRegion));

      RenderTraceInvalidateEnd(thebes, "FF00FF");
      break;
    }
    case CompositableOperation::TOpUseTiledLayerBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint TiledLayerBuffer"));
      const OpUseTiledLayerBuffer& op = aEdit.get_OpUseTiledLayerBuffer();
      TiledContentHost* compositable = AsCompositable(op)->AsTiledContentHost();

      NS_ASSERTION(compositable, "The compositable is not tiled");

      const SurfaceDescriptorTiles& tileDesc = op.tileLayerDescriptor();
      bool success = compositable->UseTiledLayerBuffer(this, tileDesc);
      if (!success) {
        return false;
      }
      break;
    }
    case CompositableOperation::TOpRemoveTexture: {
      const OpRemoveTexture& op = aEdit.get_OpRemoveTexture();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> tex = TextureHost::AsTextureHost(op.textureParent());

      MOZ_ASSERT(tex.get());
      compositable->RemoveTextureHost(tex);
      // send FenceHandle if present.
      SendFenceHandleIfPresent(op.textureParent(), compositable);
      break;
    }
    case CompositableOperation::TOpRemoveTextureAsync: {
      const OpRemoveTextureAsync& op = aEdit.get_OpRemoveTextureAsync();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> tex = TextureHost::AsTextureHost(op.textureParent());

      MOZ_ASSERT(tex.get());
      compositable->RemoveTextureHost(tex);

      if (!IsAsync() && ImageBridgeParent::GetInstance(GetChildProcessId())) {
        // send FenceHandle if present via ImageBridge.
        ImageBridgeParent::AppendDeliverFenceMessage(
                             GetChildProcessId(),
                             op.holderId(),
                             op.transactionId(),
                             op.textureParent(),
                             compositable);

        // If the message is recievied via PLayerTransaction,
        // Send message back via PImageBridge.
        ImageBridgeParent::ReplyRemoveTexture(
                             GetChildProcessId(),
                             OpReplyRemoveTexture(op.holderId(),
                                                  op.transactionId()));
      } else {
        // send FenceHandle if present.
        SendFenceHandleIfPresent(op.textureParent(), compositable);

        ReplyRemoveTexture(OpReplyRemoveTexture(op.holderId(),
                                                op.transactionId()));
      }
      break;
    }
    case CompositableOperation::TOpUseTexture: {
      const OpUseTexture& op = aEdit.get_OpUseTexture();
      CompositableHost* compositable = AsCompositable(op);

      nsAutoTArray<CompositableHost::TimedTexture,4> textures;
      for (auto& timedTexture : op.textures()) {
        CompositableHost::TimedTexture* t = textures.AppendElement();
        t->mTexture =
            TextureHost::AsTextureHost(timedTexture.textureParent());
        MOZ_ASSERT(t->mTexture);
        t->mTimeStamp = timedTexture.timeStamp();
        t->mPictureRect = timedTexture.picture();
        t->mFrameID = timedTexture.frameID();
        t->mProducerID = timedTexture.producerID();
        MOZ_ASSERT(ValidatePictureRect(t->mTexture->GetSize(), t->mPictureRect));

        MaybeFence maybeFence = timedTexture.fence();
        if (maybeFence.type() == MaybeFence::TFenceHandle) {
          FenceHandle fence = maybeFence.get_FenceHandle();
          if (fence.IsValid()) {
            t->mTexture->SetAcquireFenceHandle(fence);
          }
        }
      }
      compositable->UseTextureHost(textures);

      if (IsAsync() && compositable->GetLayer()) {
        ScheduleComposition(op);
      }
      break;
    }
    case CompositableOperation::TOpUseComponentAlphaTextures: {
      const OpUseComponentAlphaTextures& op = aEdit.get_OpUseComponentAlphaTextures();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> texOnBlack = TextureHost::AsTextureHost(op.textureOnBlackParent());
      RefPtr<TextureHost> texOnWhite = TextureHost::AsTextureHost(op.textureOnWhiteParent());

      MOZ_ASSERT(texOnBlack && texOnWhite);
      compositable->UseComponentAlphaTextures(texOnBlack, texOnWhite);

      if (IsAsync()) {
        ScheduleComposition(op);
      }
      break;
    }
#ifdef MOZ_WIDGET_GONK
    case CompositableOperation::TOpUseOverlaySource: {
      const OpUseOverlaySource& op = aEdit.get_OpUseOverlaySource();
      CompositableHost* compositable = AsCompositable(op);
      MOZ_ASSERT(compositable->GetType() == CompositableType::IMAGE_OVERLAY, "Invalid operation!");
      if (!ValidatePictureRect(op.overlay().size(), op.picture())) {
        return false;
      }
      compositable->UseOverlaySource(op.overlay(), op.picture());
      break;
    }
#endif
    default: {
      MOZ_ASSERT(false, "bad type");
    }
  }

  return true;
}
bool
CompositableParentManager::ReceiveCompositableUpdate(const CompositableOperation& aEdit,
                                                     EditReplyVector& replyv)
{
  switch (aEdit.type()) {
    case CompositableOperation::TOpCreatedIncrementalTexture: {
      MOZ_LAYERS_LOG(("[ParentSide] Created texture"));
      const OpCreatedIncrementalTexture& op = aEdit.get_OpCreatedIncrementalTexture();
      CompositableHost* compositable = AsCompositable(op);

      bool success =
        compositable->CreatedIncrementalTexture(this,
                                                op.textureInfo(),
                                                op.bufferRect());
      if (!success) {
        return false;
      }
      break;
    }
    case CompositableOperation::TOpPaintTextureRegion: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ThebesLayer"));

      const OpPaintTextureRegion& op = aEdit.get_OpPaintTextureRegion();
      CompositableHost* compositable = AsCompositable(op);
      Layer* layer = compositable->GetLayer();
      if (!layer || layer->GetType() != Layer::TYPE_THEBES) {
        return false;
      }
      ThebesLayerComposite* thebes = static_cast<ThebesLayerComposite*>(layer);

      const ThebesBufferData& bufferData = op.bufferData();

      RenderTraceInvalidateStart(thebes, "FF00FF", op.updatedRegion().GetBounds());

      nsIntRegion frontUpdatedRegion;
      if (!compositable->UpdateThebes(bufferData,
                                      op.updatedRegion(),
                                      thebes->GetValidRegion(),
                                      &frontUpdatedRegion))
      {
        return false;
      }
      replyv.push_back(
        OpContentBufferSwap(op.compositableParent(), nullptr, frontUpdatedRegion));

      RenderTraceInvalidateEnd(thebes, "FF00FF");
      // return texure data to client if necessary
      ReturnTextureDataIfNecessary(compositable, replyv, op.compositableParent());
      break;
    }
    case CompositableOperation::TOpPaintTextureIncremental: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ThebesLayer"));

      const OpPaintTextureIncremental& op = aEdit.get_OpPaintTextureIncremental();

      CompositableHost* compositable = AsCompositable(op);

      SurfaceDescriptor desc = op.image();

      compositable->UpdateIncremental(op.textureId(),
                                      desc,
                                      op.updatedRegion(),
                                      op.bufferRect(),
                                      op.bufferRotation());
      break;
    }
    case CompositableOperation::TOpUpdatePictureRect: {
      const OpUpdatePictureRect& op = aEdit.get_OpUpdatePictureRect();
      CompositableHost* compositable = AsCompositable(op);
      MOZ_ASSERT(compositable);
      compositable->SetPictureRect(op.picture());
      break;
    }
    case CompositableOperation::TOpUseTiledLayerBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint TiledLayerBuffer"));
      const OpUseTiledLayerBuffer& op = aEdit.get_OpUseTiledLayerBuffer();
      CompositableHost* compositable = AsCompositable(op);

      TiledLayerComposer* tileComposer = compositable->AsTiledLayerComposer();
      NS_ASSERTION(tileComposer, "compositable is not a tile composer");

      const SurfaceDescriptorTiles& tileDesc = op.tileLayerDescriptor();
      tileComposer->UseTiledLayerBuffer(this, tileDesc);
      break;
    }
    case CompositableOperation::TOpRemoveTexture: {
      const OpRemoveTexture& op = aEdit.get_OpRemoveTexture();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> tex = TextureHost::AsTextureHost(op.textureParent());

      MOZ_ASSERT(tex.get());
      compositable->RemoveTextureHost(tex);
      // return texure data to client if necessary
      ReturnTextureDataIfNecessary(compositable, replyv, op.compositableParent());
      break;
    }
    case CompositableOperation::TOpUseTexture: {
      const OpUseTexture& op = aEdit.get_OpUseTexture();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> tex = TextureHost::AsTextureHost(op.textureParent());

      MOZ_ASSERT(tex.get());
      compositable->UseTextureHost(tex);

      if (IsAsync()) {
        ScheduleComposition(op);
        // Async layer updates don't trigger invalidation, manually tell the layer
        // that its content have changed.
        if (compositable->GetLayer()) {
          compositable->GetLayer()->SetInvalidRectToVisibleRegion();
        }
      }
      // return texure data to client if necessary
      ReturnTextureDataIfNecessary(compositable, replyv, op.compositableParent());
      break;
    }
    case CompositableOperation::TOpUseComponentAlphaTextures: {
      const OpUseComponentAlphaTextures& op = aEdit.get_OpUseComponentAlphaTextures();
      CompositableHost* compositable = AsCompositable(op);
      RefPtr<TextureHost> texOnBlack = TextureHost::AsTextureHost(op.textureOnBlackParent());
      RefPtr<TextureHost> texOnWhite = TextureHost::AsTextureHost(op.textureOnWhiteParent());

      MOZ_ASSERT(texOnBlack && texOnWhite);
      compositable->UseComponentAlphaTextures(texOnBlack, texOnWhite);

      if (IsAsync()) {
        ScheduleComposition(op);
      }
      // return texure data to client if necessary
      ReturnTextureDataIfNecessary(compositable, replyv, op.compositableParent());
      break;
    }
    case CompositableOperation::TOpUpdateTexture: {
      const OpUpdateTexture& op = aEdit.get_OpUpdateTexture();
      RefPtr<TextureHost> texture = TextureHost::AsTextureHost(op.textureParent());
      MOZ_ASSERT(texture);

      texture->Updated(op.region().type() == MaybeRegion::TnsIntRegion
                       ? &op.region().get_nsIntRegion()
                       : nullptr); // no region means invalidate the entire surface
      break;
    }

    default: {
      MOZ_ASSERT(false, "bad type");
    }
  }

  return true;
}
Esempio n. 8
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bool
CompositableParentManager::ReceiveCompositableUpdate(const CompositableOperation& aEdit,
                                                     EditReplyVector& replyv)
{
  switch (aEdit.type()) {
    case CompositableOperation::TOpCreatedSingleBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Created single buffer"));
      const OpCreatedSingleBuffer& op = aEdit.get_OpCreatedSingleBuffer();
      CompositableParent* compositableParent = static_cast<CompositableParent*>(op.compositableParent());
      TextureParent* textureParent = static_cast<TextureParent*>(op.bufferParent());

      textureParent->EnsureTextureHost(op.descriptor().type());
      textureParent->GetTextureHost()->SetBuffer(new SurfaceDescriptor(op.descriptor()),
                                                 compositableParent->GetCompositableManager());

      ContentHostBase* content = static_cast<ContentHostBase*>(compositableParent->GetCompositableHost());
      content->SetTextureHosts(textureParent->GetTextureHost());

      break;
    }
    case CompositableOperation::TOpCreatedDoubleBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Created double buffer"));
      const OpCreatedDoubleBuffer& op = aEdit.get_OpCreatedDoubleBuffer();
      CompositableParent* compositableParent = static_cast<CompositableParent*>(op.compositableParent());
      TextureParent* frontParent = static_cast<TextureParent*>(op.frontParent());
      TextureParent* backParent = static_cast<TextureParent*>(op.backParent());


      frontParent->EnsureTextureHost(op.frontDescriptor().type());
      backParent->EnsureTextureHost(op.backDescriptor().type());
      frontParent->GetTextureHost()->SetBuffer(new SurfaceDescriptor(op.frontDescriptor()),
                                               compositableParent->GetCompositableManager());
      backParent->GetTextureHost()->SetBuffer(new SurfaceDescriptor(op.backDescriptor()),
                                              compositableParent->GetCompositableManager());

      ContentHostBase* content = static_cast<ContentHostBase*>(compositableParent->GetCompositableHost());
      content->SetTextureHosts(frontParent->GetTextureHost(),
                               backParent->GetTextureHost());

      break;
    }
    case CompositableOperation::TOpDestroyThebesBuffer: {
      MOZ_LAYERS_LOG(("[ParentSide] Created double buffer"));
      const OpDestroyThebesBuffer& op = aEdit.get_OpDestroyThebesBuffer();
      CompositableParent* compositableParent = static_cast<CompositableParent*>(op.compositableParent());
      ContentHostBase* content = static_cast<ContentHostBase*>(compositableParent->GetCompositableHost());
      content->DestroyTextures();

      break;
    }
    case CompositableOperation::TOpPaintTexture: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint Texture X"));
      const OpPaintTexture& op = aEdit.get_OpPaintTexture();

      TextureParent* textureParent = static_cast<TextureParent*>(op.textureParent());
      CompositableHost* compositable = textureParent->GetCompositableHost();
      Layer* layer = GetLayerFromOpPaint(op);
      ShadowLayer* shadowLayer = layer ? layer->AsShadowLayer() : nullptr;
      if (shadowLayer) {
        Compositor* compositor = static_cast<LayerManagerComposite*>(layer->Manager())->GetCompositor();
        compositable->SetCompositor(compositor);
        compositable->SetLayer(layer);
      } else {
        // if we reach this branch, it most likely means that async textures
        // are coming in before we had time to attach the conmpositable to a
        // layer. Don't panic, it is okay in this case. it should not be
        // happening continuously, though.
      }

      if (layer) {
        RenderTraceInvalidateStart(layer, "FF00FF", layer->GetVisibleRegion().GetBounds());
      }

      const SurfaceDescriptor& descriptor = op.image();
      textureParent->EnsureTextureHost(descriptor.type());
      MOZ_ASSERT(textureParent->GetTextureHost());

      SurfaceDescriptor newBack;
      bool shouldRecomposite = compositable->Update(op.image(), &newBack);
      if (IsSurfaceDescriptorValid(newBack)) {
        replyv.push_back(OpTextureSwap(op.textureParent(), nullptr, newBack));
      }

      if (shouldRecomposite && textureParent->GetCompositorID()) {
        CompositorParent* cp
          = CompositorParent::GetCompositor(textureParent->GetCompositorID());
        if (cp) {
          cp->ScheduleComposition();
        }
      }

      if (layer) {
        RenderTraceInvalidateEnd(layer, "FF00FF");
      }

      break;
    }
    case CompositableOperation::TOpPaintTextureRegion: {
      MOZ_LAYERS_LOG(("[ParentSide] Paint ThebesLayer"));

      const OpPaintTextureRegion& op = aEdit.get_OpPaintTextureRegion();
      CompositableParent* compositableParent = static_cast<CompositableParent*>(op.compositableParent());
      CompositableHost* compositable =
        compositableParent->GetCompositableHost();
      ShadowThebesLayer* thebes =
        static_cast<ShadowThebesLayer*>(compositable->GetLayer());

      const ThebesBufferData& bufferData = op.bufferData();

      RenderTraceInvalidateStart(thebes, "FF00FF", op.updatedRegion().GetBounds());

      nsIntRegion frontUpdatedRegion;
      compositable->UpdateThebes(bufferData,
                                 op.updatedRegion(),
                                 thebes->GetValidRegion(),
                                 &frontUpdatedRegion);
      replyv.push_back(
        OpContentBufferSwap(compositableParent, nullptr, frontUpdatedRegion));

      RenderTraceInvalidateEnd(thebes, "FF00FF");
      break;
    }
    case CompositableOperation::TOpUpdatePictureRect: {
      const OpUpdatePictureRect& op = aEdit.get_OpUpdatePictureRect();
      CompositableHost* compositable
       = static_cast<CompositableParent*>(op.compositableParent())->GetCompositableHost();
      MOZ_ASSERT(compositable);
      compositable->SetPictureRect(op.picture());
      break;
    }
    default: {
      MOZ_ASSERT(false, "bad type");
    }
  }

  return true;
}