SubtreeShouldBeSkipped uses information from property trees

cc/trees/property_tree_builder.cc

 // Copyright 2014 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 "cc/trees/property_tree_builder.h"
 
 #include <stddef.h>
 
 #include <map>
 #include <set>
@@ skipping 594 matching lines @@
     return false;
   }
 
   EffectNode node;
   node.owner_id = layer->id();
   node.data.opacity = layer->EffectiveOpacity();
   node.data.has_render_surface = should_create_render_surface;
   node.data.has_copy_request = layer->HasCopyRequest();
   node.data.has_background_filters = !layer->background_filters().IsEmpty();
   node.data.has_animated_opacity = has_animated_opacity;
+  node.data.double_sided = layer->double_sided();
 
   if (!is_root) {
     // The effect node's transform id is used only when we create a render
     // surface. So, we can leave the default value when we don't create a render
     // surface.
     if (should_create_render_surface) {
       // In this case, we will create a transform node, so it's safe to use the
       // next available id from the transform tree as this effect node's
       // transform id.
       node.data.transform_id =
           data_from_ancestor.transform_tree->next_available_id();
     }
     node.data.clip_id = data_from_ancestor.clip_tree_parent;
+    EffectNode* parent_node = data_for_children->effect_tree->Node(parent_id);
+    node.data.node_or_ancestor_has_background_filters =
+        parent_node->data.node_or_ancestor_has_background_filters ||
+        node.data.has_background_filters;
+    node.data.to_screen_opacity_is_animated =
+        parent_node->data.to_screen_opacity_is_animated || has_animated_opacity;
   } else {
     // Root render surface acts the unbounded and untransformed to draw content
     // into. Transform node created from root layer (includes device scale
     // factor) and clip node created from root layer (include viewports) applies
     // to root render surface's content, but not root render surface itself.
     node.data.transform_id = kRootPropertyTreeNodeId;
     node.data.clip_id = kRootPropertyTreeNodeId;
+    node.data.node_or_ancestor_has_background_filters =
+        node.data.has_background_filters;
+    node.data.to_screen_opacity_is_animated = has_animated_opacity;
   }
   node.data.target_id =
       should_create_render_surface
           ? data_from_ancestor.effect_tree->next_available_id()
           : data_for_children->render_target;
   data_for_children->effect_tree_parent =
       data_for_children->effect_tree->Insert(node, parent_id);
   layer->SetEffectTreeIndex(data_for_children->effect_tree_parent);
   if (should_create_render_surface) {
     data_for_children->compound_transform_since_render_target =
@@ skipping 354 matching lines @@
   if (SkColorGetA(color) != 255)
     color = SkColorSetA(color, 255);
   BuildPropertyTreesTopLevelInternal(
       root_layer, page_scale_layer, inner_viewport_scroll_layer,
       outer_viewport_scroll_layer, overscroll_elasticity_layer,
       elastic_overscroll, page_scale_factor, device_scale_factor, viewport,
       device_transform, property_trees, color);
 }
 
 }  // namespace cc