cc: Compute draw transforms dynamically.

third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/graphics/compositing/PaintArtifactCompositor.h"
 
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/picture_layer.h"
 #include "cc/playback/display_item_list.h"
@@ skipping 298 matching lines @@
     int parentId = compositorIdForClipNode(clipNode->parent());
     int id = clipTree().Insert(cc::ClipNode(), parentId);
 
     cc::ClipNode& compositorNode = *clipTree().Node(id);
     compositorNode.owner_id = dummyLayer->id();
 
     // TODO(jbroman): Don't discard rounded corners.
     compositorNode.clip = clipNode->clipRect().rect();
     compositorNode.transform_id = compositorIdForTransformNode(clipNode->localTransformSpace());
     compositorNode.target_transform_id = kRealRootNodeId;
+    compositorNode.target_effect_id = kSecondaryRootNodeId;
     compositorNode.applies_local_clip = true;
     compositorNode.layers_are_clipped = true;
     compositorNode.layers_are_clipped_when_surfaces_disabled = true;
 
     m_rootLayer->AddChild(dummyLayer);
     dummyLayer->SetTransformTreeIndex(compositorNode.transform_id);
     dummyLayer->SetClipTreeIndex(id);
     dummyLayer->SetEffectTreeIndex(kSecondaryRootNodeId);
     dummyLayer->SetScrollTreeIndex(kRealRootNodeId);
     dummyLayer->set_property_tree_sequence_number(kPropertyTreeSequenceNumber);
@@ skipping 67 matching lines @@
     // We currently create dummy layers to host effect nodes and corresponding render surface.
     // This should be removed once cc implements better support for freestanding property trees.
     scoped_refptr<cc::Layer> dummyLayer = cc::Layer::Create();
     m_rootLayer->AddChild(dummyLayer);
 
     // Also cc assumes a clip node is always created by a layer that creates render surface.
     cc::ClipNode& dummyClip = *clipTree().Node(clipTree().Insert(cc::ClipNode(), kSecondaryRootNodeId));
     dummyClip.owner_id = dummyLayer->id();
     dummyClip.transform_id = kRealRootNodeId;
     dummyClip.target_transform_id = kRealRootNodeId;
+    dummyClip.target_effect_id = kSecondaryRootNodeId;
 
     cc::EffectNode& effectNode = *effectTree().Node(effectTree().Insert(cc::EffectNode(), compositorIdForCurrentEffectNode()));
     effectNode.owner_id = dummyLayer->id();
     effectNode.clip_id = dummyClip.id;
     effectNode.opacity = nextEffect->opacity();
     m_effectStack.append(BlinkEffectAndCcIdPair{nextEffect, effectNode.id});
 
     dummyLayer->set_property_tree_sequence_number(kPropertyTreeSequenceNumber);
     dummyLayer->SetTransformTreeIndex(kSecondaryRootNodeId);
     dummyLayer->SetClipTreeIndex(dummyClip.id);
@@ skipping 51 matching lines @@
 
         layer->SetShouldCheckBackfaceVisibility(paintChunk.properties.backfaceHidden);
 
         if (m_extraDataForTestingEnabled)
             m_extraDataForTesting->contentLayers.append(layer);
     }
 
     // Mark the property trees as having been rebuilt.
     host->GetLayerTree()->property_trees()->sequence_number = kPropertyTreeSequenceNumber;
     host->GetLayerTree()->property_trees()->needs_rebuild = false;
+    host->GetLayerTree()->property_trees()->ResetCachedData();
 }
 
 } // namespace blink