cc/layer_impl_unittest.cc - chromium/src - Git at Google

 // 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/layer_impl.h"

 #include "cc/layer_tree_impl.h"
 #include "cc/single_thread_proxy.h"
 #include "cc/test/fake_impl_proxy.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/fake_output_surface.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperation.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperations.h"
 #include "third_party/skia/include/effects/SkBlurImageFilter.h"

 using namespace WebKit;

 namespace cc {
 namespace {

 #define EXECUTE_AND_VERIFY_SUBTREE_CHANGED(codeToTest)                  \
     root->ResetAllChangeTrackingForSubtree();                           \
     codeToTest;                                                         \
     EXPECT_TRUE(root->LayerPropertyChanged());                          \
     EXPECT_TRUE(child->LayerPropertyChanged());                         \
     EXPECT_TRUE(grandChild->LayerPropertyChanged());                    \
     EXPECT_FALSE(root->LayerSurfacePropertyChanged())


 #define EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(codeToTest)           \
     root->ResetAllChangeTrackingForSubtree();                           \
     codeToTest;                                                         \
     EXPECT_FALSE(root->LayerPropertyChanged());                         \
     EXPECT_FALSE(child->LayerPropertyChanged());                        \
     EXPECT_FALSE(grandChild->LayerPropertyChanged());                   \
     EXPECT_FALSE(root->LayerSurfacePropertyChanged())

 #define EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(codeToTest)               \
     root->ResetAllChangeTrackingForSubtree();                           \
     codeToTest;                                                         \
     EXPECT_TRUE(root->LayerPropertyChanged());                          \
     EXPECT_FALSE(child->LayerPropertyChanged());                        \
     EXPECT_FALSE(grandChild->LayerPropertyChanged());                   \
     EXPECT_FALSE(root->LayerSurfacePropertyChanged())

 #define EXECUTE_AND_VERIFY_ONLY_SURFACE_CHANGED(codeToTest)             \
     root->ResetAllChangeTrackingForSubtree();                           \
     codeToTest;                                                         \
     EXPECT_FALSE(root->LayerPropertyChanged());                         \
     EXPECT_FALSE(child->LayerPropertyChanged());                        \
     EXPECT_FALSE(grandChild->LayerPropertyChanged());                   \
     EXPECT_TRUE(root->LayerSurfacePropertyChanged())

 #define VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(codeToTest)                   \
     root->ResetAllChangeTrackingForSubtree();                             \
     hostImpl.ForcePrepareToDraw();                                        \
     EXPECT_FALSE(hostImpl.active_tree()->needs_update_draw_properties()); \
     codeToTest;                                                           \
     EXPECT_TRUE(hostImpl.active_tree()->needs_update_draw_properties());

 #define VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(codeToTest)                \
     root->ResetAllChangeTrackingForSubtree();                             \
     hostImpl.ForcePrepareToDraw();                                        \
     EXPECT_FALSE(hostImpl.active_tree()->needs_update_draw_properties()); \
     codeToTest;                                                           \
     EXPECT_FALSE(hostImpl.active_tree()->needs_update_draw_properties());

 TEST(LayerImplTest, verifyLayerChangesAreTrackedProperly)
 {
     //
     // This test checks that layerPropertyChanged() has the correct behavior.
     //

     // The constructor on this will fake that we are on the correct thread.
     // Create a simple LayerImpl tree:
     FakeImplProxy proxy;
     FakeLayerTreeHostImpl hostImpl(&proxy);
     EXPECT_TRUE(hostImpl.InitializeRenderer(createFakeOutputSurface()));
     scoped_ptr<LayerImpl> root = LayerImpl::Create(hostImpl.active_tree(), 1);
     root->AddChild(LayerImpl::Create(hostImpl.active_tree(), 2));
     LayerImpl* child = root->children()[0];
     child->AddChild(LayerImpl::Create(hostImpl.active_tree(), 3));
     LayerImpl* grandChild = child->children()[0];

     // Adding children is an internal operation and should not mark layers as changed.
     EXPECT_FALSE(root->LayerPropertyChanged());
     EXPECT_FALSE(child->LayerPropertyChanged());
     EXPECT_FALSE(grandChild->LayerPropertyChanged());

     gfx::PointF arbitraryPointF = gfx::PointF(0.125f, 0.25f);
     float arbitraryNumber = 0.352f;
     gfx::Size arbitrarySize = gfx::Size(111, 222);
     gfx::Point arbitraryPoint = gfx::Point(333, 444);
     gfx::Vector2d arbitraryVector2d = gfx::Vector2d(111, 222);
     gfx::Rect arbitraryRect = gfx::Rect(arbitraryPoint, arbitrarySize);
     gfx::RectF arbitraryRectF = gfx::RectF(arbitraryPointF, gfx::SizeF(1.234f, 5.678f));
     SkColor arbitraryColor = SkColorSetRGB(10, 20, 30);
     gfx::Transform arbitraryTransform;
     arbitraryTransform.Scale3d(0.1, 0.2, 0.3);
     WebFilterOperations arbitraryFilters;
     arbitraryFilters.append(WebFilterOperation::createOpacityFilter(0.5));
     skia::RefPtr<SkImageFilter> arbitraryFilter = skia::AdoptRef(new SkBlurImageFilter(SK_Scalar1, SK_Scalar1));

     // These properties are internal, and should not be considered "change" when they are used.
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->set_update_rect(arbitraryRectF));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetMaxScrollOffset(arbitraryVector2d));

     // Changing these properties affects the entire subtree of layers.
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetAnchorPoint(arbitraryPointF));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetAnchorPointZ(arbitraryNumber));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilters(arbitraryFilters));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilters(WebFilterOperations()));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilter(arbitraryFilter));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetMaskLayer(LayerImpl::Create(hostImpl.active_tree(), 4)));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetMasksToBounds(true));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetContentsOpaque(true));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetReplicaLayer(LayerImpl::Create(hostImpl.active_tree(), 5)));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPosition(arbitraryPointF));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPreserves3d(true));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetDoubleSided(false)); // constructor initializes it to "true".
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->ScrollBy(arbitraryVector2d));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollDelta(gfx::Vector2d()));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollOffset(arbitraryVector2d));
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetImplTransform(arbitraryTransform));

     // Changing these properties only affects the layer itself.
     EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetContentBounds(arbitrarySize));
     EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetContentsScale(arbitraryNumber, arbitraryNumber));
     EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetDrawsContent(true));
     EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetBackgroundColor(SK_ColorGRAY));
     EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetBackgroundFilters(arbitraryFilters));

     // Changing these properties only affects how render surface is drawn
     EXECUTE_AND_VERIFY_ONLY_SURFACE_CHANGED(root->SetOpacity(arbitraryNumber));
     EXECUTE_AND_VERIFY_ONLY_SURFACE_CHANGED(root->SetTransform(arbitraryTransform));

     // Special case: check that sublayer transform changes all layer's descendants, but not the layer itself.
     root->ResetAllChangeTrackingForSubtree();
     root->SetSublayerTransform(arbitraryTransform);
     EXPECT_FALSE(root->LayerPropertyChanged());
     EXPECT_TRUE(child->LayerPropertyChanged());
     EXPECT_TRUE(grandChild->LayerPropertyChanged());

     // Special case: check that setBounds changes behavior depending on masksToBounds.
     root->SetMasksToBounds(false);
     EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetBounds(gfx::Size(135, 246)));
     root->SetMasksToBounds(true);
     EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetBounds(arbitrarySize)); // should be a different size than previous call, to ensure it marks tree changed.

     // After setting all these properties already, setting to the exact same values again should
     // not cause any change.
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetAnchorPoint(arbitraryPointF));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetAnchorPointZ(arbitraryNumber));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetMasksToBounds(true));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetPosition(arbitraryPointF));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetPreserves3d(true));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetTransform(arbitraryTransform));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetDoubleSided(false)); // constructor initializes it to "true".
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetScrollDelta(gfx::Vector2d()));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetScrollOffset(arbitraryVector2d));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetImplTransform(arbitraryTransform));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetContentBounds(arbitrarySize));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetContentsScale(arbitraryNumber, arbitraryNumber));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetContentsOpaque(true));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetOpacity(arbitraryNumber));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetDrawsContent(true));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetSublayerTransform(arbitraryTransform));
     EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetBounds(arbitrarySize));
 }

 TEST(LayerImplTest, VerifyNeedsUpdateDrawProperties)
 {
     FakeImplProxy proxy;
     FakeLayerTreeHostImpl hostImpl(&proxy);
     EXPECT_TRUE(hostImpl.InitializeRenderer(createFakeOutputSurface()));
     scoped_ptr<LayerImpl> root = LayerImpl::Create(hostImpl.active_tree(), 1);

     gfx::PointF arbitraryPointF = gfx::PointF(0.125f, 0.25f);
     float arbitraryNumber = 0.352f;
     gfx::Size arbitrarySize = gfx::Size(111, 222);
     gfx::Point arbitraryPoint = gfx::Point(333, 444);
     gfx::Vector2d arbitraryVector2d = gfx::Vector2d(111, 222);
     gfx::Vector2d largeVector2d = gfx::Vector2d(1000, 1000);
     gfx::Rect arbitraryRect = gfx::Rect(arbitraryPoint, arbitrarySize);
     gfx::RectF arbitraryRectF = gfx::RectF(arbitraryPointF, gfx::SizeF(1.234f, 5.678f));
     SkColor arbitraryColor = SkColorSetRGB(10, 20, 30);
     gfx::Transform arbitraryTransform;
     arbitraryTransform.Scale3d(0.1, 0.2, 0.3);
     WebFilterOperations arbitraryFilters;
     arbitraryFilters.append(WebFilterOperation::createOpacityFilter(0.5));
     skia::RefPtr<SkImageFilter> arbitraryFilter = skia::AdoptRef(new SkBlurImageFilter(SK_Scalar1, SK_Scalar1));

     // Related filter functions.
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(arbitraryFilters));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(arbitraryFilters));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(WebFilterOperations()));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilter(arbitraryFilter));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilter(arbitraryFilter));

     // Related scrolling functions.
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMaxScrollOffset(largeVector2d));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMaxScrollOffset(largeVector2d));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->ScrollBy(arbitraryVector2d));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->ScrollBy(gfx::Vector2d()));
     root->SetScrollDelta(gfx::Vector2d(0, 0));
     hostImpl.ForcePrepareToDraw();
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetScrollDelta(arbitraryVector2d));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetScrollDelta(arbitraryVector2d));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetScrollOffset(arbitraryVector2d));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetScrollOffset(arbitraryVector2d));

     // Unrelated functions, always set to new values, always set needs update.
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetAnchorPointZ(arbitraryNumber));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMaskLayer(LayerImpl::Create(hostImpl.active_tree(), 4)));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMasksToBounds(true));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentsOpaque(true));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetReplicaLayer(LayerImpl::Create(hostImpl.active_tree(), 5)));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPosition(arbitraryPointF));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPreserves3d(true));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetDoubleSided(false)); // constructor initializes it to "true".
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetImplTransform(arbitraryTransform));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentBounds(arbitrarySize));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentsScale(arbitraryNumber, arbitraryNumber));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetDrawsContent(true));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBackgroundColor(SK_ColorGRAY));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBackgroundFilters(arbitraryFilters));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetOpacity(arbitraryNumber));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetTransform(arbitraryTransform));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetSublayerTransform(arbitraryTransform));
     VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBounds(arbitrarySize));

     // Unrelated functions, set to the same values, no needs update.
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetAnchorPointZ(arbitraryNumber));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilter(arbitraryFilter));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMasksToBounds(true));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentsOpaque(true));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPosition(arbitraryPointF));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPreserves3d(true));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetDoubleSided(false)); // constructor initializes it to "true".
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetImplTransform(arbitraryTransform));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentBounds(arbitrarySize));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentsScale(arbitraryNumber, arbitraryNumber));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetDrawsContent(true));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBackgroundColor(SK_ColorGRAY));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBackgroundFilters(arbitraryFilters));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetOpacity(arbitraryNumber));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetTransform(arbitraryTransform));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetSublayerTransform(arbitraryTransform));
     VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBounds(arbitrarySize));
 }

 }  // namespace
 }  // namespace 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/layer_impl.h"

	#include "cc/layer_tree_impl.h"
	#include "cc/single_thread_proxy.h"
	#include "cc/test/fake_impl_proxy.h"
	#include "cc/test/fake_layer_tree_host_impl.h"
	#include "cc/test/fake_output_surface.h"
	#include "testing/gmock/include/gmock/gmock.h"
	#include "testing/gtest/include/gtest/gtest.h"
	#include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperation.h"
	#include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperations.h"
	#include "third_party/skia/include/effects/SkBlurImageFilter.h"

	using namespace WebKit;

	namespace cc {
	namespace {

	#define EXECUTE_AND_VERIFY_SUBTREE_CHANGED(codeToTest) \
	root->ResetAllChangeTrackingForSubtree(); \
	codeToTest; \
	EXPECT_TRUE(root->LayerPropertyChanged()); \
	EXPECT_TRUE(child->LayerPropertyChanged()); \
	EXPECT_TRUE(grandChild->LayerPropertyChanged()); \
	EXPECT_FALSE(root->LayerSurfacePropertyChanged())


	#define EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(codeToTest) \
	root->ResetAllChangeTrackingForSubtree(); \
	codeToTest; \
	EXPECT_FALSE(root->LayerPropertyChanged()); \
	EXPECT_FALSE(child->LayerPropertyChanged()); \
	EXPECT_FALSE(grandChild->LayerPropertyChanged()); \
	EXPECT_FALSE(root->LayerSurfacePropertyChanged())

	#define EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(codeToTest) \
	root->ResetAllChangeTrackingForSubtree(); \
	codeToTest; \
	EXPECT_TRUE(root->LayerPropertyChanged()); \
	EXPECT_FALSE(child->LayerPropertyChanged()); \
	EXPECT_FALSE(grandChild->LayerPropertyChanged()); \
	EXPECT_FALSE(root->LayerSurfacePropertyChanged())

	#define EXECUTE_AND_VERIFY_ONLY_SURFACE_CHANGED(codeToTest) \
	root->ResetAllChangeTrackingForSubtree(); \
	codeToTest; \
	EXPECT_FALSE(root->LayerPropertyChanged()); \
	EXPECT_FALSE(child->LayerPropertyChanged()); \
	EXPECT_FALSE(grandChild->LayerPropertyChanged()); \
	EXPECT_TRUE(root->LayerSurfacePropertyChanged())

	#define VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(codeToTest) \
	root->ResetAllChangeTrackingForSubtree(); \
	hostImpl.ForcePrepareToDraw(); \
	EXPECT_FALSE(hostImpl.active_tree()->needs_update_draw_properties()); \
	codeToTest; \
	EXPECT_TRUE(hostImpl.active_tree()->needs_update_draw_properties());

	#define VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(codeToTest) \
	root->ResetAllChangeTrackingForSubtree(); \
	hostImpl.ForcePrepareToDraw(); \
	EXPECT_FALSE(hostImpl.active_tree()->needs_update_draw_properties()); \
	codeToTest; \
	EXPECT_FALSE(hostImpl.active_tree()->needs_update_draw_properties());

	TEST(LayerImplTest, verifyLayerChangesAreTrackedProperly)
	{
	//
	// This test checks that layerPropertyChanged() has the correct behavior.
	//

	// The constructor on this will fake that we are on the correct thread.
	// Create a simple LayerImpl tree:
	FakeImplProxy proxy;
	FakeLayerTreeHostImpl hostImpl(&proxy);
	EXPECT_TRUE(hostImpl.InitializeRenderer(createFakeOutputSurface()));
	scoped_ptr<LayerImpl> root = LayerImpl::Create(hostImpl.active_tree(), 1);
	root->AddChild(LayerImpl::Create(hostImpl.active_tree(), 2));
	LayerImpl* child = root->children()[0];
	child->AddChild(LayerImpl::Create(hostImpl.active_tree(), 3));
	LayerImpl* grandChild = child->children()[0];

	// Adding children is an internal operation and should not mark layers as changed.
	EXPECT_FALSE(root->LayerPropertyChanged());
	EXPECT_FALSE(child->LayerPropertyChanged());
	EXPECT_FALSE(grandChild->LayerPropertyChanged());

	gfx::PointF arbitraryPointF = gfx::PointF(0.125f, 0.25f);
	float arbitraryNumber = 0.352f;
	gfx::Size arbitrarySize = gfx::Size(111, 222);
	gfx::Point arbitraryPoint = gfx::Point(333, 444);
	gfx::Vector2d arbitraryVector2d = gfx::Vector2d(111, 222);
	gfx::Rect arbitraryRect = gfx::Rect(arbitraryPoint, arbitrarySize);
	gfx::RectF arbitraryRectF = gfx::RectF(arbitraryPointF, gfx::SizeF(1.234f, 5.678f));
	SkColor arbitraryColor = SkColorSetRGB(10, 20, 30);
	gfx::Transform arbitraryTransform;
	arbitraryTransform.Scale3d(0.1, 0.2, 0.3);
	WebFilterOperations arbitraryFilters;
	arbitraryFilters.append(WebFilterOperation::createOpacityFilter(0.5));
	skia::RefPtr<SkImageFilter> arbitraryFilter = skia::AdoptRef(new SkBlurImageFilter(SK_Scalar1, SK_Scalar1));

	// These properties are internal, and should not be considered "change" when they are used.
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->set_update_rect(arbitraryRectF));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetMaxScrollOffset(arbitraryVector2d));

	// Changing these properties affects the entire subtree of layers.
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetAnchorPoint(arbitraryPointF));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetAnchorPointZ(arbitraryNumber));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilters(arbitraryFilters));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilters(WebFilterOperations()));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilter(arbitraryFilter));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetMaskLayer(LayerImpl::Create(hostImpl.active_tree(), 4)));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetMasksToBounds(true));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetContentsOpaque(true));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetReplicaLayer(LayerImpl::Create(hostImpl.active_tree(), 5)));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPosition(arbitraryPointF));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPreserves3d(true));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetDoubleSided(false)); // constructor initializes it to "true".
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->ScrollBy(arbitraryVector2d));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollDelta(gfx::Vector2d()));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollOffset(arbitraryVector2d));
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetImplTransform(arbitraryTransform));

	// Changing these properties only affects the layer itself.
	EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetContentBounds(arbitrarySize));
	EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetContentsScale(arbitraryNumber, arbitraryNumber));
	EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetDrawsContent(true));
	EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetBackgroundColor(SK_ColorGRAY));
	EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetBackgroundFilters(arbitraryFilters));

	// Changing these properties only affects how render surface is drawn
	EXECUTE_AND_VERIFY_ONLY_SURFACE_CHANGED(root->SetOpacity(arbitraryNumber));
	EXECUTE_AND_VERIFY_ONLY_SURFACE_CHANGED(root->SetTransform(arbitraryTransform));

	// Special case: check that sublayer transform changes all layer's descendants, but not the layer itself.
	root->ResetAllChangeTrackingForSubtree();
	root->SetSublayerTransform(arbitraryTransform);
	EXPECT_FALSE(root->LayerPropertyChanged());
	EXPECT_TRUE(child->LayerPropertyChanged());
	EXPECT_TRUE(grandChild->LayerPropertyChanged());

	// Special case: check that setBounds changes behavior depending on masksToBounds.
	root->SetMasksToBounds(false);
	EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetBounds(gfx::Size(135, 246)));
	root->SetMasksToBounds(true);
	EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetBounds(arbitrarySize)); // should be a different size than previous call, to ensure it marks tree changed.

	// After setting all these properties already, setting to the exact same values again should
	// not cause any change.
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetAnchorPoint(arbitraryPointF));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetAnchorPointZ(arbitraryNumber));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetMasksToBounds(true));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetPosition(arbitraryPointF));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetPreserves3d(true));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetTransform(arbitraryTransform));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetDoubleSided(false)); // constructor initializes it to "true".
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetScrollDelta(gfx::Vector2d()));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetScrollOffset(arbitraryVector2d));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetImplTransform(arbitraryTransform));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetContentBounds(arbitrarySize));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetContentsScale(arbitraryNumber, arbitraryNumber));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetContentsOpaque(true));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetOpacity(arbitraryNumber));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetDrawsContent(true));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetSublayerTransform(arbitraryTransform));
	EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetBounds(arbitrarySize));
	}

	TEST(LayerImplTest, VerifyNeedsUpdateDrawProperties)
	{
	FakeImplProxy proxy;
	FakeLayerTreeHostImpl hostImpl(&proxy);
	EXPECT_TRUE(hostImpl.InitializeRenderer(createFakeOutputSurface()));
	scoped_ptr<LayerImpl> root = LayerImpl::Create(hostImpl.active_tree(), 1);

	gfx::PointF arbitraryPointF = gfx::PointF(0.125f, 0.25f);
	float arbitraryNumber = 0.352f;
	gfx::Size arbitrarySize = gfx::Size(111, 222);
	gfx::Point arbitraryPoint = gfx::Point(333, 444);
	gfx::Vector2d arbitraryVector2d = gfx::Vector2d(111, 222);
	gfx::Vector2d largeVector2d = gfx::Vector2d(1000, 1000);
	gfx::Rect arbitraryRect = gfx::Rect(arbitraryPoint, arbitrarySize);
	gfx::RectF arbitraryRectF = gfx::RectF(arbitraryPointF, gfx::SizeF(1.234f, 5.678f));
	SkColor arbitraryColor = SkColorSetRGB(10, 20, 30);
	gfx::Transform arbitraryTransform;
	arbitraryTransform.Scale3d(0.1, 0.2, 0.3);
	WebFilterOperations arbitraryFilters;
	arbitraryFilters.append(WebFilterOperation::createOpacityFilter(0.5));
	skia::RefPtr<SkImageFilter> arbitraryFilter = skia::AdoptRef(new SkBlurImageFilter(SK_Scalar1, SK_Scalar1));

	// Related filter functions.
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(arbitraryFilters));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(arbitraryFilters));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(WebFilterOperations()));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilter(arbitraryFilter));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilter(arbitraryFilter));

	// Related scrolling functions.
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMaxScrollOffset(largeVector2d));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMaxScrollOffset(largeVector2d));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->ScrollBy(arbitraryVector2d));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->ScrollBy(gfx::Vector2d()));
	root->SetScrollDelta(gfx::Vector2d(0, 0));
	hostImpl.ForcePrepareToDraw();
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetScrollDelta(arbitraryVector2d));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetScrollDelta(arbitraryVector2d));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetScrollOffset(arbitraryVector2d));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetScrollOffset(arbitraryVector2d));

	// Unrelated functions, always set to new values, always set needs update.
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetAnchorPointZ(arbitraryNumber));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMaskLayer(LayerImpl::Create(hostImpl.active_tree(), 4)));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMasksToBounds(true));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentsOpaque(true));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetReplicaLayer(LayerImpl::Create(hostImpl.active_tree(), 5)));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPosition(arbitraryPointF));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPreserves3d(true));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetDoubleSided(false)); // constructor initializes it to "true".
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetImplTransform(arbitraryTransform));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentBounds(arbitrarySize));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentsScale(arbitraryNumber, arbitraryNumber));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetDrawsContent(true));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBackgroundColor(SK_ColorGRAY));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBackgroundFilters(arbitraryFilters));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetOpacity(arbitraryNumber));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetTransform(arbitraryTransform));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetSublayerTransform(arbitraryTransform));
	VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBounds(arbitrarySize));

	// Unrelated functions, set to the same values, no needs update.
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetAnchorPointZ(arbitraryNumber));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilter(arbitraryFilter));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMasksToBounds(true));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentsOpaque(true));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPosition(arbitraryPointF));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPreserves3d(true));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetDoubleSided(false)); // constructor initializes it to "true".
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetImplTransform(arbitraryTransform));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentBounds(arbitrarySize));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentsScale(arbitraryNumber, arbitraryNumber));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetDrawsContent(true));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBackgroundColor(SK_ColorGRAY));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBackgroundFilters(arbitraryFilters));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetOpacity(arbitraryNumber));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetTransform(arbitraryTransform));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetSublayerTransform(arbitraryTransform));
	VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBounds(arbitrarySize));
	}

	} // namespace
	} // namespace cc