cc : Stop pushing layers from hidden subtrees at commit

cc/trees/layer_tree_host_common_unittest.cc

 // Copyright 2011 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/layer_tree_host_common.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 5350 matching lines @@
   EXPECT_EQ(expect_not_lcd_text, child_->CanUseLCDText());
   EXPECT_EQ(expect_lcd_text, grand_child_->CanUseLCDText());
 }
 
 INSTANTIATE_TEST_CASE_P(LayerTreeHostCommonTest,
                         LCDTextTest,
                         testing::Combine(testing::Bool(),
                                          testing::Bool(),
                                          testing::Bool()));
 
-TEST_F(LayerTreeHostCommonTest, SubtreeHidden_SingleLayerImpl) {

[jaydasika, 2017/04/27 21:36:58]

Deleted these tests as hidden subtrees now don't exists on compositor thread and
there are similar tests on main thread already.

-  FakeImplTaskRunnerProvider task_runner_provider;
-  TestTaskGraphRunner task_graph_runner;
-  FakeLayerTreeHostImpl host_impl(&task_runner_provider, &task_graph_runner);
-  host_impl.CreatePendingTree();
-
-  std::unique_ptr<LayerImpl> root =
-      LayerImpl::Create(host_impl.pending_tree(), 1);
-  root->SetBounds(gfx::Size(50, 50));
-  root->SetDrawsContent(true);
-  LayerImpl* root_layer = root.get();
-
-  std::unique_ptr<LayerImpl> child =
-      LayerImpl::Create(host_impl.pending_tree(), 2);
-  child->SetBounds(gfx::Size(40, 40));
-  child->SetDrawsContent(true);
-
-  std::unique_ptr<LayerImpl> grand_child =
-      LayerImpl::Create(host_impl.pending_tree(), 3);
-  grand_child->SetBounds(gfx::Size(30, 30));
-  grand_child->SetDrawsContent(true);
-  grand_child->test_properties()->hide_layer_and_subtree = true;
-
-  child->test_properties()->AddChild(std::move(grand_child));
-  root->test_properties()->AddChild(std::move(child));
-  host_impl.pending_tree()->SetRootLayerForTesting(std::move(root));
-
-  LayerImplList render_surface_layer_list;
-  LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting inputs(
-      root_layer, root_layer->bounds(), &render_surface_layer_list);
-  inputs.can_adjust_raster_scales = true;
-  LayerTreeHostCommon::CalculateDrawPropertiesForTesting(&inputs);
-
-  // We should have one render surface and two layers. The grand child has
-  // hidden itself.
-  ASSERT_EQ(1u, render_surface_layer_list.size());
-  ASSERT_EQ(2u, root_layer->GetRenderSurface()->layer_list().size());
-  EXPECT_EQ(1, root_layer->GetRenderSurface()->layer_list().at(0)->id());
-  EXPECT_EQ(2, root_layer->GetRenderSurface()->layer_list().at(1)->id());
-}
-
-TEST_F(LayerTreeHostCommonTest, SubtreeHidden_TwoLayersImpl) {
-  FakeImplTaskRunnerProvider task_runner_provider;
-  TestTaskGraphRunner task_graph_runner;
-  FakeLayerTreeHostImpl host_impl(&task_runner_provider, &task_graph_runner);
-  host_impl.CreatePendingTree();
-
-  std::unique_ptr<LayerImpl> root =
-      LayerImpl::Create(host_impl.pending_tree(), 1);
-  root->SetBounds(gfx::Size(50, 50));
-  root->SetDrawsContent(true);
-  LayerImpl* root_layer = root.get();
-
-  std::unique_ptr<LayerImpl> child =
-      LayerImpl::Create(host_impl.pending_tree(), 2);
-  child->SetBounds(gfx::Size(40, 40));
-  child->SetDrawsContent(true);
-  child->test_properties()->hide_layer_and_subtree = true;
-
-  std::unique_ptr<LayerImpl> grand_child =
-      LayerImpl::Create(host_impl.pending_tree(), 3);
-  grand_child->SetBounds(gfx::Size(30, 30));
-  grand_child->SetDrawsContent(true);
-
-  child->test_properties()->AddChild(std::move(grand_child));
-  root->test_properties()->AddChild(std::move(child));
-  host_impl.pending_tree()->SetRootLayerForTesting(std::move(root));
-
-  LayerImplList render_surface_layer_list;
-  LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting inputs(
-      root_layer, root_layer->bounds(), &render_surface_layer_list);
-  inputs.can_adjust_raster_scales = true;
-  LayerTreeHostCommon::CalculateDrawPropertiesForTesting(&inputs);
-
-  // We should have one render surface and one layers. The child has
-  // hidden itself and the grand child.
-  ASSERT_EQ(1u, render_surface_layer_list.size());
-  ASSERT_EQ(1u, root_layer->GetRenderSurface()->layer_list().size());
-  EXPECT_EQ(1, root_layer->GetRenderSurface()->layer_list().at(0)->id());
-}
-
 void EmptyCopyOutputCallback(std::unique_ptr<CopyOutputResult> result) {}
 
 TEST_F(LayerTreeHostCommonTest, SubtreeHiddenWithCopyRequest) {
-  FakeImplTaskRunnerProvider task_runner_provider;
-  TestTaskGraphRunner task_graph_runner;
-  FakeLayerTreeHostImpl host_impl(&task_runner_provider, &task_graph_runner);
-  host_impl.CreatePendingTree();
+  scoped_refptr<Layer> root = Layer::Create();
+  scoped_refptr<Layer> copy_grand_parent = Layer::Create();
+  scoped_refptr<Layer> copy_parent = Layer::Create();
+  scoped_refptr<Layer> copy_layer = Layer::Create();
+  scoped_refptr<Layer> copy_child = Layer::Create();
+  scoped_refptr<Layer> copy_grand_child = Layer::Create();
+  scoped_refptr<Layer> copy_grand_parent_sibling_before = Layer::Create();
+  scoped_refptr<Layer> copy_grand_parent_sibling_after = Layer::Create();
 
-  std::unique_ptr<LayerImpl> root =
-      LayerImpl::Create(host_impl.pending_tree(), 1);
   root->SetBounds(gfx::Size(50, 50));
-  root->SetDrawsContent(true);
-  LayerImpl* root_layer = root.get();
+  copy_grand_parent->SetBounds(gfx::Size(50, 50));
+  copy_parent->SetBounds(gfx::Size(50, 50));
+  copy_parent->SetForceRenderSurfaceForTesting(true);
+  copy_layer->SetBounds(gfx::Size(50, 50));
+  copy_child->SetBounds(gfx::Size(50, 50));
+  copy_grand_child->SetBounds(gfx::Size(50, 50));
+  copy_grand_parent_sibling_before->SetBounds(gfx::Size(50, 50));
+  copy_grand_parent_sibling_after->SetBounds(gfx::Size(50, 50));
 
-  std::unique_ptr<LayerImpl> copy_grand_parent =
-      LayerImpl::Create(host_impl.pending_tree(), 2);
-  copy_grand_parent->SetBounds(gfx::Size(40, 40));
-  copy_grand_parent->SetDrawsContent(true);
-  LayerImpl* copy_grand_parent_layer = copy_grand_parent.get();
+  root->AddChild(copy_grand_parent_sibling_before);
+  root->AddChild(copy_grand_parent);
+  root->AddChild(copy_grand_parent_sibling_after);
+  copy_grand_parent->AddChild(copy_parent);
+  copy_parent->AddChild(copy_layer);
+  copy_layer->AddChild(copy_child);
+  copy_child->AddChild(copy_grand_child);
+  host()->SetRootLayer(root);
 
-  std::unique_ptr<LayerImpl> copy_parent =
-      LayerImpl::Create(host_impl.pending_tree(), 3);
-  copy_parent->SetBounds(gfx::Size(30, 30));
-  copy_parent->SetDrawsContent(true);
-  copy_parent->test_properties()->force_render_surface = true;
-  LayerImpl* copy_parent_layer = copy_parent.get();
-
-  std::unique_ptr<LayerImpl> copy_request =
-      LayerImpl::Create(host_impl.pending_tree(), 4);
-  copy_request->SetBounds(gfx::Size(20, 20));
-  copy_request->SetDrawsContent(true);
-  copy_request->test_properties()->force_render_surface = true;
-  LayerImpl* copy_layer = copy_request.get();
-
-  std::unique_ptr<LayerImpl> copy_child =
-      LayerImpl::Create(host_impl.pending_tree(), 5);
-  copy_child->SetBounds(gfx::Size(20, 20));
-  copy_child->SetDrawsContent(true);
-  LayerImpl* copy_child_layer = copy_child.get();
-
-  std::unique_ptr<LayerImpl> copy_grand_child =
-      LayerImpl::Create(host_impl.pending_tree(), 6);
-  copy_grand_child->SetBounds(gfx::Size(20, 20));
-  copy_grand_child->SetDrawsContent(true);
-  LayerImpl* copy_grand_child_layer = copy_grand_child.get();
-
-  std::unique_ptr<LayerImpl> copy_grand_parent_sibling_before =
-      LayerImpl::Create(host_impl.pending_tree(), 7);
-  copy_grand_parent_sibling_before->SetBounds(gfx::Size(40, 40));
-  copy_grand_parent_sibling_before->SetDrawsContent(true);
-  LayerImpl* copy_grand_parent_sibling_before_layer =
-      copy_grand_parent_sibling_before.get();
-
-  std::unique_ptr<LayerImpl> copy_grand_parent_sibling_after =
-      LayerImpl::Create(host_impl.pending_tree(), 8);
-  copy_grand_parent_sibling_after->SetBounds(gfx::Size(40, 40));
-  copy_grand_parent_sibling_after->SetDrawsContent(true);
-  LayerImpl* copy_grand_parent_sibling_after_layer =
-      copy_grand_parent_sibling_after.get();
-
-  copy_child->test_properties()->AddChild(std::move(copy_grand_child));
-  copy_request->test_properties()->AddChild(std::move(copy_child));
-  copy_parent->test_properties()->AddChild(std::move(copy_request));
-  copy_grand_parent->test_properties()->AddChild(std::move(copy_parent));
-  root->test_properties()->AddChild(
-      std::move(copy_grand_parent_sibling_before));
-  root->test_properties()->AddChild(std::move(copy_grand_parent));
-  root->test_properties()->AddChild(std::move(copy_grand_parent_sibling_after));
-  host_impl.pending_tree()->SetRootLayerForTesting(std::move(root));
-
-  // Hide the copy_grand_parent and its subtree. But make a copy request in that
-  // hidden subtree on copy_layer. Also hide the copy grand child and its
-  // subtree.
-  copy_grand_parent_layer->test_properties()->hide_layer_and_subtree = true;
-  copy_grand_parent_sibling_before_layer->test_properties()
-      ->hide_layer_and_subtree = true;
-  copy_grand_parent_sibling_after_layer->test_properties()
-      ->hide_layer_and_subtree = true;
-  copy_grand_child_layer->test_properties()->hide_layer_and_subtree = true;
-
-  copy_layer->test_properties()->copy_requests.push_back(
+  copy_layer->RequestCopyOfOutput(
       CopyOutputRequest::CreateRequest(base::Bind(&EmptyCopyOutputCallback)));
 
-  LayerImplList render_surface_layer_list;
-  LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting inputs(
-      root_layer, root_layer->bounds(), &render_surface_layer_list);
-  inputs.can_adjust_raster_scales = true;
-  LayerTreeHostCommon::CalculateDrawPropertiesForTesting(&inputs);
+  copy_grand_parent->SetHideLayerAndSubtree(true);
+  copy_grand_parent_sibling_before->SetHideLayerAndSubtree(true);
+  copy_grand_parent_sibling_after->SetHideLayerAndSubtree(true);
+  copy_grand_child->SetHideLayerAndSubtree(true);
 
-  EXPECT_TRUE(root_layer->has_copy_requests_in_target_subtree());
-  EXPECT_TRUE(copy_grand_parent_layer->has_copy_requests_in_target_subtree());
-  EXPECT_TRUE(copy_parent_layer->has_copy_requests_in_target_subtree());
-  EXPECT_TRUE(copy_layer->has_copy_requests_in_target_subtree());
+  ExecuteCalculateDrawPropertiesAndSaveUpdateLayerList(root.get());
+  EXPECT_FALSE(copy_grand_parent->is_hidden());
+  EXPECT_TRUE(copy_grand_parent_sibling_after->is_hidden());
+  EXPECT_TRUE(copy_grand_parent_sibling_before->is_hidden());
+  EXPECT_TRUE(copy_grand_child->is_hidden());
 
-  // We should have four render surfaces, one for the root, one for the grand
-  // parent since it has opacity and two drawing descendants, one for the parent
-  // since it owns a surface, and one for the copy_layer.
-  ASSERT_EQ(4u, render_surface_layer_list.size());
-  EXPECT_EQ(root_layer->id(), render_surface_layer_list.at(0)->id());
-  EXPECT_EQ(copy_grand_parent_layer->id(),
-            render_surface_layer_list.at(1)->id());
-  EXPECT_EQ(copy_parent_layer->id(), render_surface_layer_list.at(2)->id());
-  EXPECT_EQ(copy_layer->id(), render_surface_layer_list.at(3)->id());
-
-  // The root render surface should have 2 contributing layers.
-  ASSERT_EQ(2u, root_layer->GetRenderSurface()->layer_list().size());
-  EXPECT_EQ(root_layer->id(),
-            root_layer->GetRenderSurface()->layer_list().at(0)->id());
-  EXPECT_EQ(copy_grand_parent_layer->id(),
-            root_layer->GetRenderSurface()->layer_list().at(1)->id());
-
-  // Nothing actually draws into the copy parent, so only the copy_layer will
-  // appear in its list, since it needs to be drawn for the copy request.
-  ASSERT_EQ(1u, copy_parent_layer->GetRenderSurface()->layer_list().size());
-  EXPECT_EQ(copy_layer->id(),
-            copy_parent_layer->GetRenderSurface()->layer_list().at(0)->id());
-
-  // The copy_layer's render surface should have two contributing layers.
-  ASSERT_EQ(2u, copy_layer->GetRenderSurface()->layer_list().size());
-  EXPECT_EQ(copy_layer->id(),
-            copy_layer->GetRenderSurface()->layer_list().at(0)->id());
-  EXPECT_EQ(copy_child_layer->id(),
-            copy_layer->GetRenderSurface()->layer_list().at(1)->id());
-
-  // copy_grand_parent, copy_parent shouldn't be drawn because they are hidden,
-  // but the copy_layer and copy_child should be drawn for the copy request.
-  // copy grand child should not be drawn as its hidden even in the copy
-  // request.
-  EffectTree& tree =
-      root_layer->layer_tree_impl()->property_trees()->effect_tree;
-  EffectNode* node = tree.Node(copy_grand_parent_layer->effect_tree_index());
+  EffectTree& tree = host()->property_trees()->effect_tree;
+  EffectNode* node = tree.Node(copy_grand_parent->effect_tree_index());
   EXPECT_FALSE(node->is_drawn);
-  node = tree.Node(copy_parent_layer->effect_tree_index());
+  node = tree.Node(copy_parent->effect_tree_index());
   EXPECT_FALSE(node->is_drawn);
   node = tree.Node(copy_layer->effect_tree_index());
   EXPECT_TRUE(node->is_drawn);
-  node = tree.Node(copy_child_layer->effect_tree_index());
+  node = tree.Node(copy_child->effect_tree_index());
   EXPECT_TRUE(node->is_drawn);
-  node = tree.Node(copy_grand_child_layer->effect_tree_index());
-  EXPECT_FALSE(node->is_drawn);
-
-  // Though copy_layer is drawn, it shouldn't contribute to drawn surface as its
-  // actually hidden.
-  EXPECT_FALSE(copy_layer->GetRenderSurface()->contributes_to_drawn_surface());
 }
 
 TEST_F(LayerTreeHostCommonTest, ClippedOutCopyRequest) {
   FakeImplTaskRunnerProvider task_runner_provider;
   TestTaskGraphRunner task_graph_runner;
   FakeLayerTreeHostImpl host_impl(&task_runner_provider, &task_graph_runner);
   host_impl.CreatePendingTree();
 
   std::unique_ptr<LayerImpl> root =
       LayerImpl::Create(host_impl.pending_tree(), 1);
@@ skipping 3801 matching lines @@
 
   child->SetTransform(singular);
   ExecuteCalculateDrawPropertiesAndSaveUpdateLayerList(root.get());
   update_list = GetUpdateLayerList();
   EXPECT_FALSE(VerifyLayerInList(grandchild, update_list));
   child->SetTransform(gfx::Transform());
 
   child->SetHideLayerAndSubtree(true);
   ExecuteCalculateDrawPropertiesAndSaveUpdateLayerList(root.get());
   update_list = GetUpdateLayerList();
+  EXPECT_TRUE(child->is_hidden());
+  EXPECT_TRUE(grandchild->is_hidden());
+  EXPECT_FALSE(VerifyLayerInList(child, update_list));
   EXPECT_FALSE(VerifyLayerInList(grandchild, update_list));
   child->SetHideLayerAndSubtree(false);
 
   gfx::Transform zero_z_scale;
   zero_z_scale.Scale3d(1, 1, 0);
   child->SetTransform(zero_z_scale);
 
   // Add a transform animation with a start delay. Now, even though |child| has
   // a singular transform, the subtree should still get processed.
   int animation_id = 0;
@@ skipping 93 matching lines @@
   gfx::Transform rotate_back_and_translate;
   rotate_back_and_translate.RotateAboutYAxis(180);
   rotate_back_and_translate.Translate(-10, 0);
 
   child_ptr->test_properties()->transform = singular;
   host_impl.active_tree()->property_trees()->needs_rebuild = true;
   ExecuteCalculateDrawPropertiesAndSaveUpdateLayerList(root_ptr);
   EXPECT_EQ(gfx::Rect(0, 0), grandchild_ptr->visible_layer_rect());
   child_ptr->test_properties()->transform = gfx::Transform();
 
-  child_ptr->test_properties()->hide_layer_and_subtree = true;
-  ExecuteCalculateDrawPropertiesAndSaveUpdateLayerList(root_ptr);
-  EXPECT_EQ(gfx::Rect(0, 0), grandchild_ptr->visible_layer_rect());
-  child_ptr->test_properties()->hide_layer_and_subtree = false;
-
   child_ptr->test_properties()->opacity = 0.f;
   host_impl.active_tree()->property_trees()->needs_rebuild = true;
   ExecuteCalculateDrawPropertiesAndSaveUpdateLayerList(root_ptr);
   EXPECT_EQ(gfx::Rect(0, 0), grandchild_ptr->visible_layer_rect());
   child_ptr->test_properties()->opacity = 1.f;
 
   root_ptr->test_properties()->transform = singular;
   // Force transform tree to have a node for child, so that ancestor's
   // invertible transform can be tested.
   child_ptr->test_properties()->transform = rotate;
@@ skipping 174 matching lines @@
   LayerImpl* child = AddChild<LayerImpl>(root);
 
   root->SetBounds(gfx::Size(100, 100));
   child->SetBounds(gfx::Size(10, 10));
   child->SetDrawsContent(true);
 
   ExecuteCalculateDrawProperties(root);
   EXPECT_EQ(gfx::Rect(10, 10), child->visible_layer_rect());
   child->set_visible_layer_rect(gfx::Rect());
 
-  child->test_properties()->hide_layer_and_subtree = true;
-  root->layer_tree_impl()->property_trees()->needs_rebuild = true;
-  ExecuteCalculateDrawProperties(root);
-  EXPECT_EQ(gfx::Rect(0, 0), child->visible_layer_rect());
-  child->test_properties()->hide_layer_and_subtree = false;
-
   child->SetBounds(gfx::Size());
   root->layer_tree_impl()->property_trees()->needs_rebuild = true;
   ExecuteCalculateDrawProperties(root);
   EXPECT_EQ(gfx::Rect(0, 0), child->visible_layer_rect());
   child->SetBounds(gfx::Size(10, 10));
 
   gfx::Transform rotate;
   child->test_properties()->double_sided = false;
   rotate.RotateAboutXAxis(180.f);
   child->test_properties()->transform = rotate;
@@ skipping 506 matching lines @@
   test_layer->SetDrawsContent(true);
   ExecuteCalculateDrawProperties(root);
 
   EXPECT_EQ(gfx::Rect(30, 30), root->clip_rect());
   EXPECT_EQ(gfx::Rect(50, 50), render_surface->clip_rect());
   EXPECT_EQ(gfx::Rect(50, 50), test_layer->clip_rect());
 }
 
 TEST_F(LayerTreeHostCommonTest, SubtreeIsHiddenTest) {
   // Tests that subtree is hidden is updated.
-  LayerImpl* root = root_layer_for_testing();
-  LayerImpl* hidden = AddChild<LayerImpl>(root);
-  LayerImpl* test = AddChild<LayerImpl>(hidden);
+  scoped_refptr<Layer> root = Layer::Create();
+  scoped_refptr<Layer> hidden = Layer::Create();
+  scoped_refptr<Layer> test = Layer::Create();
 
   root->SetBounds(gfx::Size(30, 30));
   hidden->SetBounds(gfx::Size(30, 30));
-  hidden->test_properties()->force_render_surface = true;
-  hidden->test_properties()->hide_layer_and_subtree = true;
+  hidden->SetHideLayerAndSubtree(true);
   test->SetBounds(gfx::Size(30, 30));
-  test->test_properties()->force_render_surface = true;
 
-  ExecuteCalculateDrawProperties(root);
-  EXPECT_EQ(0.f,
-            test->GetRenderSurface()->OwningEffectNode()->screen_space_opacity);
+  root->AddChild(hidden);
+  hidden->AddChild(test);
+  host()->SetRootLayer(root);
 
-  hidden->test_properties()->hide_layer_and_subtree = false;
-  root->layer_tree_impl()->property_trees()->needs_rebuild = true;
-  ExecuteCalculateDrawProperties(root);
-  EXPECT_EQ(1.f,
-            test->GetRenderSurface()->OwningEffectNode()->screen_space_opacity);
+  ExecuteCalculateDrawPropertiesAndSaveUpdateLayerList(root.get());
+  EXPECT_TRUE(test->is_hidden());
+  // Hidden layers should have invalid property tree indices.
+  const int kInvalidNodeId = -1;
+  EXPECT_EQ(test->effect_tree_index(), kInvalidNodeId);
+  EXPECT_EQ(test->scroll_tree_index(), kInvalidNodeId);
+  EXPECT_EQ(test->clip_tree_index(), kInvalidNodeId);
+  EXPECT_EQ(test->transform_tree_index(), kInvalidNodeId);
+
+  hidden->SetHideLayerAndSubtree(false);
+  root->layer_tree_host()->property_trees()->needs_rebuild = true;
+  ExecuteCalculateDrawPropertiesAndSaveUpdateLayerList(root.get());
+  EXPECT_FALSE(test->is_hidden());
+  EXPECT_NE(test->effect_tree_index(), kInvalidNodeId);
+  EXPECT_NE(test->scroll_tree_index(), kInvalidNodeId);
+  EXPECT_NE(test->clip_tree_index(), kInvalidNodeId);
+  EXPECT_NE(test->transform_tree_index(), kInvalidNodeId);
 }
 
 TEST_F(LayerTreeHostCommonTest, TwoUnclippedRenderSurfaces) {
   LayerImpl* root = root_layer_for_testing();
   LayerImpl* clip_layer = AddChild<LayerImpl>(root);
   LayerImpl* render_surface1 = AddChild<LayerImpl>(clip_layer);
   LayerImpl* render_surface2 = AddChild<LayerImpl>(render_surface1);
   LayerImpl* clip_child = AddChild<LayerImpl>(render_surface2);
 
   root->SetBounds(gfx::Size(30, 30));
@@ skipping 569 matching lines @@
 
   // Check child layer draw properties.
   EXPECT_EQ(gfx::Rect(10, 10), child->visible_layer_rect());
   EXPECT_EQ(gfx::Transform(), child->DrawTransform());
   EXPECT_EQ(gfx::Rect(10, 10), child->clip_rect());
   EXPECT_EQ(gfx::Rect(10, 10), child->drawable_content_rect());
 }
 
 }  // namespace
 }  // namespace cc