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damage_tracker_unittest.cc
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damage_tracker_unittest.cc
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// 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/damage_tracker.h"
#include "cc/base/math_util.h"
#include "cc/layers/layer_impl.h"
#include "cc/output/filter_operation.h"
#include "cc/output/filter_operations.h"
#include "cc/test/fake_impl_proxy.h"
#include "cc/test/fake_layer_tree_host_impl.h"
#include "cc/test/geometry_test_utils.h"
#include "cc/trees/layer_tree_host_common.h"
#include "cc/trees/single_thread_proxy.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/effects/SkBlurImageFilter.h"
#include "ui/gfx/quad_f.h"
namespace cc {
namespace {
void ExecuteCalculateDrawProperties(LayerImpl* root,
LayerImplList& render_surface_layer_list) {
// Sanity check: The test itself should create the root layer's render
// surface, so that the surface (and its damage tracker) can
// persist across multiple calls to this function.
ASSERT_TRUE(root->render_surface());
ASSERT_FALSE(render_surface_layer_list.size());
LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting inputs(
root, root->bounds(), &render_surface_layer_list);
LayerTreeHostCommon::CalculateDrawProperties(&inputs);
}
void ClearDamageForAllSurfaces(LayerImpl* layer) {
if (layer->render_surface())
layer->render_surface()->damage_tracker()->DidDrawDamagedArea();
// Recursively clear damage for any existing surface.
for (size_t i = 0; i < layer->children().size(); ++i)
ClearDamageForAllSurfaces(layer->children()[i]);
}
void EmulateDrawingOneFrame(LayerImpl* root) {
// This emulates only steps that are relevant to testing the damage tracker:
// 1. computing the render passes and layerlists
// 2. updating all damage trackers in the correct order
// 3. resetting all update_rects and property_changed flags for all layers
// and surfaces.
LayerImplList render_surface_layer_list;
ExecuteCalculateDrawProperties(root, render_surface_layer_list);
// Iterate back-to-front, so that damage correctly propagates from descendant
// surfaces to ancestors.
for (int i = render_surface_layer_list.size() - 1; i >= 0; --i) {
RenderSurfaceImpl* target_surface =
render_surface_layer_list[i]->render_surface();
target_surface->damage_tracker()->UpdateDamageTrackingState(
target_surface->layer_list(),
target_surface->OwningLayerId(),
target_surface->SurfacePropertyChangedOnlyFromDescendant(),
target_surface->content_rect(),
render_surface_layer_list[i]->mask_layer(),
render_surface_layer_list[i]->filters());
}
root->ResetAllChangeTrackingForSubtree();
}
class DamageTrackerTest : public testing::Test {
public:
DamageTrackerTest() : host_impl_(&proxy_) {}
scoped_ptr<LayerImpl> CreateTestTreeWithOneSurface() {
scoped_ptr<LayerImpl> root =
LayerImpl::Create(host_impl_.active_tree(), 1);
scoped_ptr<LayerImpl> child =
LayerImpl::Create(host_impl_.active_tree(), 2);
root->SetPosition(gfx::PointF());
root->SetAnchorPoint(gfx::PointF());
root->SetBounds(gfx::Size(500, 500));
root->SetContentBounds(gfx::Size(500, 500));
root->SetDrawsContent(true);
root->CreateRenderSurface();
root->render_surface()->SetContentRect(gfx::Rect(0, 0, 500, 500));
child->SetPosition(gfx::PointF(100.f, 100.f));
child->SetAnchorPoint(gfx::PointF());
child->SetBounds(gfx::Size(30, 30));
child->SetContentBounds(gfx::Size(30, 30));
child->SetDrawsContent(true);
root->AddChild(child.Pass());
return root.Pass();
}
scoped_ptr<LayerImpl> CreateTestTreeWithTwoSurfaces() {
// This test tree has two render surfaces: one for the root, and one for
// child1. Additionally, the root has a second child layer, and child1 has
// two children of its own.
scoped_ptr<LayerImpl> root =
LayerImpl::Create(host_impl_.active_tree(), 1);
scoped_ptr<LayerImpl> child1 =
LayerImpl::Create(host_impl_.active_tree(), 2);
scoped_ptr<LayerImpl> child2 =
LayerImpl::Create(host_impl_.active_tree(), 3);
scoped_ptr<LayerImpl> grand_child1 =
LayerImpl::Create(host_impl_.active_tree(), 4);
scoped_ptr<LayerImpl> grand_child2 =
LayerImpl::Create(host_impl_.active_tree(), 5);
root->SetPosition(gfx::PointF());
root->SetAnchorPoint(gfx::PointF());
root->SetBounds(gfx::Size(500, 500));
root->SetContentBounds(gfx::Size(500, 500));
root->SetDrawsContent(true);
root->CreateRenderSurface();
root->render_surface()->SetContentRect(gfx::Rect(0, 0, 500, 500));
child1->SetPosition(gfx::PointF(100.f, 100.f));
child1->SetAnchorPoint(gfx::PointF());
child1->SetBounds(gfx::Size(30, 30));
child1->SetContentBounds(gfx::Size(30, 30));
// With a child that draws_content, opacity will cause the layer to create
// its own RenderSurface. This layer does not draw, but is intended to
// create its own RenderSurface. TODO: setting opacity and
// ForceRenderSurface may be redundant here.
child1->SetOpacity(0.5f);
child1->SetDrawsContent(false);
child1->SetForceRenderSurface(true);
child2->SetPosition(gfx::PointF(11.f, 11.f));
child2->SetAnchorPoint(gfx::PointF());
child2->SetBounds(gfx::Size(18, 18));
child2->SetContentBounds(gfx::Size(18, 18));
child2->SetDrawsContent(true);
grand_child1->SetPosition(gfx::PointF(200.f, 200.f));
grand_child1->SetAnchorPoint(gfx::PointF());
grand_child1->SetBounds(gfx::Size(6, 8));
grand_child1->SetContentBounds(gfx::Size(6, 8));
grand_child1->SetDrawsContent(true);
grand_child2->SetPosition(gfx::PointF(190.f, 190.f));
grand_child2->SetAnchorPoint(gfx::PointF());
grand_child2->SetBounds(gfx::Size(6, 8));
grand_child2->SetContentBounds(gfx::Size(6, 8));
grand_child2->SetDrawsContent(true);
child1->AddChild(grand_child1.Pass());
child1->AddChild(grand_child2.Pass());
root->AddChild(child1.Pass());
root->AddChild(child2.Pass());
return root.Pass();
}
scoped_ptr<LayerImpl> CreateAndSetUpTestTreeWithOneSurface() {
scoped_ptr<LayerImpl> root = CreateTestTreeWithOneSurface();
// Setup includes going past the first frame which always damages
// everything, so that we can actually perform specific tests.
EmulateDrawingOneFrame(root.get());
return root.Pass();
}
scoped_ptr<LayerImpl> CreateAndSetUpTestTreeWithTwoSurfaces() {
scoped_ptr<LayerImpl> root = CreateTestTreeWithTwoSurfaces();
// Setup includes going past the first frame which always damages
// everything, so that we can actually perform specific tests.
EmulateDrawingOneFrame(root.get());
return root.Pass();
}
protected:
FakeImplProxy proxy_;
FakeLayerTreeHostImpl host_impl_;
};
TEST_F(DamageTrackerTest, SanityCheckTestTreeWithOneSurface) {
// Sanity check that the simple test tree will actually produce the expected
// render surfaces and layer lists.
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithOneSurface();
EXPECT_EQ(2u, root->render_surface()->layer_list().size());
EXPECT_EQ(1, root->render_surface()->layer_list()[0]->id());
EXPECT_EQ(2, root->render_surface()->layer_list()[1]->id());
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(0.f, 0.f, 500.f, 500.f), root_damage_rect);
}
TEST_F(DamageTrackerTest, SanityCheckTestTreeWithTwoSurfaces) {
// Sanity check that the complex test tree will actually produce the expected
// render surfaces and layer lists.
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithTwoSurfaces();
LayerImpl* child1 = root->children()[0];
LayerImpl* child2 = root->children()[1];
gfx::RectF child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
ASSERT_TRUE(child1->render_surface());
EXPECT_FALSE(child2->render_surface());
EXPECT_EQ(3u, root->render_surface()->layer_list().size());
EXPECT_EQ(2u, child1->render_surface()->layer_list().size());
// The render surface for child1 only has a content_rect that encloses
// grand_child1 and grand_child2, because child1 does not draw content.
EXPECT_FLOAT_RECT_EQ(gfx::RectF(190.f, 190.f, 16.f, 18.f), child_damage_rect);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(0.f, 0.f, 500.f, 500.f), root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForUpdateRects) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithOneSurface();
LayerImpl* child = root->children()[0];
// CASE 1: Setting the update rect should cause the corresponding damage to
// the surface.
ClearDamageForAllSurfaces(root.get());
child->SetUpdateRect(gfx::RectF(10.f, 11.f, 12.f, 13.f));
EmulateDrawingOneFrame(root.get());
// Damage position on the surface should be: position of update_rect (10, 11)
// relative to the child (100, 100).
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(110.f, 111.f, 12.f, 13.f), root_damage_rect);
// CASE 2: The same update rect twice in a row still produces the same
// damage.
ClearDamageForAllSurfaces(root.get());
child->SetUpdateRect(gfx::RectF(10.f, 11.f, 12.f, 13.f));
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(110.f, 111.f, 12.f, 13.f), root_damage_rect);
// CASE 3: Setting a different update rect should cause damage on the new
// update region, but no additional exposed old region.
ClearDamageForAllSurfaces(root.get());
child->SetUpdateRect(gfx::RectF(20.f, 25.f, 1.f, 2.f));
EmulateDrawingOneFrame(root.get());
// Damage position on the surface should be: position of update_rect (20, 25)
// relative to the child (100, 100).
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(120.f, 125.f, 1.f, 2.f), root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForPropertyChanges) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithOneSurface();
LayerImpl* child = root->children()[0];
// CASE 1: The layer's property changed flag takes priority over update rect.
//
ClearDamageForAllSurfaces(root.get());
child->SetUpdateRect(gfx::RectF(10.f, 11.f, 12.f, 13.f));
child->SetOpacity(0.5f);
EmulateDrawingOneFrame(root.get());
// Sanity check - we should not have accidentally created a separate render
// surface for the translucent layer.
ASSERT_FALSE(child->render_surface());
ASSERT_EQ(2u, root->render_surface()->layer_list().size());
// Damage should be the entire child layer in target_surface space.
gfx::RectF expected_rect = gfx::RectF(100.f, 100.f, 30.f, 30.f);
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(expected_rect, root_damage_rect);
// CASE 2: If a layer moves due to property change, it damages both the new
// location and the old (exposed) location. The old location is the
// entire old layer, not just the update_rect.
// Cycle one frame of no change, just to sanity check that the next rect is
// not because of the old damage state.
ClearDamageForAllSurfaces(root.get());
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_TRUE(root_damage_rect.IsEmpty());
// Then, test the actual layer movement.
ClearDamageForAllSurfaces(root.get());
child->SetPosition(gfx::PointF(200.f, 230.f));
EmulateDrawingOneFrame(root.get());
// Expect damage to be the combination of the previous one and the new one.
expected_rect.Union(gfx::RectF(200, 230, 30, 30));
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(expected_rect, root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForTransformedLayer) {
// If a layer is transformed, the damage rect should still enclose the entire
// transformed layer.
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithOneSurface();
LayerImpl* child = root->children()[0];
gfx::Transform rotation;
rotation.Rotate(45.0);
ClearDamageForAllSurfaces(root.get());
child->SetAnchorPoint(gfx::PointF(0.5f, 0.5f));
child->SetPosition(gfx::PointF(85.f, 85.f));
EmulateDrawingOneFrame(root.get());
// Sanity check that the layer actually moved to (85, 85), damaging its old
// location and new location.
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(85.f, 85.f, 45.f, 45.f), root_damage_rect);
// With the anchor on the layer's center, now we can test the rotation more
// intuitively, since it applies about the layer's anchor.
ClearDamageForAllSurfaces(root.get());
child->SetTransform(rotation);
EmulateDrawingOneFrame(root.get());
// Since the child layer is square, rotation by 45 degrees about the center
// should increase the size of the expected rect by sqrt(2), centered around
// (100, 100). The old exposed region should be fully contained in the new
// region.
float expected_width = 30.f * sqrt(2.f);
float expected_position = 100.f - 0.5f * expected_width;
gfx::RectF expected_rect(
expected_position, expected_position, expected_width, expected_width);
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(expected_rect, root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForPerspectiveClippedLayer) {
// If a layer has a perspective transform that causes w < 0, then not
// clipping the layer can cause an invalid damage rect. This test checks that
// the w < 0 case is tracked properly.
//
// The transform is constructed so that if w < 0 clipping is not performed,
// the incorrect rect will be very small, specifically: position (500.972504,
// 498.544617) and size 0.056610 x 2.910767. Instead, the correctly
// transformed rect should actually be very huge (i.e. in theory, -infinity
// on the left), and positioned so that the right-most bound rect will be
// approximately 501 units in root surface space.
//
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithOneSurface();
LayerImpl* child = root->children()[0];
gfx::Transform transform;
transform.Translate3d(500.0, 500.0, 0.0);
transform.ApplyPerspectiveDepth(1.0);
transform.RotateAboutYAxis(45.0);
transform.Translate3d(-50.0, -50.0, 0.0);
// Set up the child
child->SetPosition(gfx::PointF(0.f, 0.f));
child->SetBounds(gfx::Size(100, 100));
child->SetContentBounds(gfx::Size(100, 100));
child->SetTransform(transform);
EmulateDrawingOneFrame(root.get());
// Sanity check that the child layer's bounds would actually get clipped by
// w < 0, otherwise this test is not actually testing the intended scenario.
gfx::QuadF test_quad(gfx::RectF(gfx::PointF(), gfx::SizeF(100.f, 100.f)));
bool clipped = false;
MathUtil::MapQuad(transform, test_quad, &clipped);
EXPECT_TRUE(clipped);
// Damage the child without moving it.
ClearDamageForAllSurfaces(root.get());
child->SetOpacity(0.5f);
EmulateDrawingOneFrame(root.get());
// The expected damage should cover the entire root surface (500x500), but we
// don't care whether the damage rect was clamped or is larger than the
// surface for this test.
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
gfx::RectF damage_we_care_about =
gfx::RectF(gfx::PointF(), gfx::SizeF(500.f, 500.f));
EXPECT_TRUE(root_damage_rect.Contains(damage_we_care_about));
}
TEST_F(DamageTrackerTest, VerifyDamageForBlurredSurface) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithTwoSurfaces();
LayerImpl* surface = root->children()[0];
LayerImpl* child = surface->children()[0];
FilterOperations filters;
filters.Append(FilterOperation::CreateBlurFilter(5.f));
int outset_top, outset_right, outset_bottom, outset_left;
filters.GetOutsets(&outset_top, &outset_right, &outset_bottom, &outset_left);
// Setting the filter will damage the whole surface.
ClearDamageForAllSurfaces(root.get());
surface->SetFilters(filters);
EmulateDrawingOneFrame(root.get());
// Setting the update rect should cause the corresponding damage to the
// surface, blurred based on the size of the blur filter.
ClearDamageForAllSurfaces(root.get());
child->SetUpdateRect(gfx::RectF(1.f, 2.f, 3.f, 4.f));
EmulateDrawingOneFrame(root.get());
// Damage position on the surface should be: position of update_rect (1, 2)
// relative to the child (300, 300), but expanded by the blur outsets.
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
gfx::RectF expected_damage_rect =
gfx::RectF(301.f, 302.f, 3.f, 4.f);
expected_damage_rect.Inset(-outset_left,
-outset_top,
-outset_right,
-outset_bottom);
EXPECT_FLOAT_RECT_EQ(expected_damage_rect, root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForImageFilter) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithOneSurface();
LayerImpl* child = root->children()[0];
gfx::RectF root_damage_rect, child_damage_rect;
// Allow us to set damage on child too.
child->SetDrawsContent(true);
skia::RefPtr<SkImageFilter> filter =
skia::AdoptRef(new SkBlurImageFilter(SkIntToScalar(2),
SkIntToScalar(2)));
FilterOperations filters;
filters.Append(FilterOperation::CreateReferenceFilter(filter));
// Setting the filter will damage the whole surface.
ClearDamageForAllSurfaces(root.get());
child->SetFilters(filters);
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
child_damage_rect =
child->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(100.f, 100.f, 30.f, 30.f), root_damage_rect);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(0.f, 0.f, 30.f, 30.f), child_damage_rect);
// CASE 1: Setting the update rect should damage the whole surface (for now)
ClearDamageForAllSurfaces(root.get());
child->SetUpdateRect(gfx::RectF(0.f, 0.f, 1.f, 1.f));
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
child_damage_rect =
child->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(100.f, 100.f, 30.f, 30.f), root_damage_rect);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(0.f, 0.f, 30.f, 30.f), child_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForBackgroundBlurredChild) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithTwoSurfaces();
LayerImpl* child1 = root->children()[0];
LayerImpl* child2 = root->children()[1];
// Allow us to set damage on child1 too.
child1->SetDrawsContent(true);
FilterOperations filters;
filters.Append(FilterOperation::CreateBlurFilter(2.f));
int outset_top, outset_right, outset_bottom, outset_left;
filters.GetOutsets(&outset_top, &outset_right, &outset_bottom, &outset_left);
// Setting the filter will damage the whole surface.
ClearDamageForAllSurfaces(root.get());
child1->SetBackgroundFilters(filters);
EmulateDrawingOneFrame(root.get());
// CASE 1: Setting the update rect should cause the corresponding damage to
// the surface, blurred based on the size of the child's background
// blur filter.
ClearDamageForAllSurfaces(root.get());
root->SetUpdateRect(gfx::RectF(297.f, 297.f, 2.f, 2.f));
EmulateDrawingOneFrame(root.get());
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
// Damage position on the surface should be a composition of the damage on
// the root and on child2. Damage on the root should be: position of
// update_rect (297, 297), but expanded by the blur outsets.
gfx::RectF expected_damage_rect =
gfx::RectF(297.f, 297.f, 2.f, 2.f);
expected_damage_rect.Inset(-outset_left,
-outset_top,
-outset_right,
-outset_bottom);
EXPECT_FLOAT_RECT_EQ(expected_damage_rect, root_damage_rect);
// CASE 2: Setting the update rect should cause the corresponding damage to
// the surface, blurred based on the size of the child's background
// blur filter. Since the damage extends to the right/bottom outside
// of the blurred layer, only the left/top should end up expanded.
ClearDamageForAllSurfaces(root.get());
root->SetUpdateRect(gfx::RectF(297.f, 297.f, 30.f, 30.f));
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
// Damage position on the surface should be a composition of the damage on
// the root and on child2. Damage on the root should be: position of
// update_rect (297, 297), but expanded on the left/top by the blur outsets.
expected_damage_rect =
gfx::RectF(297.f, 297.f, 30.f, 30.f);
expected_damage_rect.Inset(-outset_left,
-outset_top,
0,
0);
EXPECT_FLOAT_RECT_EQ(expected_damage_rect, root_damage_rect);
// CASE 3: Setting this update rect outside the blurred content_bounds of the
// blurred child1 will not cause it to be expanded.
ClearDamageForAllSurfaces(root.get());
root->SetUpdateRect(gfx::RectF(30.f, 30.f, 2.f, 2.f));
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
// Damage on the root should be: position of update_rect (30, 30), not
// expanded.
expected_damage_rect =
gfx::RectF(30.f, 30.f, 2.f, 2.f);
EXPECT_FLOAT_RECT_EQ(expected_damage_rect, root_damage_rect);
// CASE 4: Setting this update rect inside the blurred content_bounds but
// outside the original content_bounds of the blurred child1 will
// cause it to be expanded.
ClearDamageForAllSurfaces(root.get());
root->SetUpdateRect(gfx::RectF(99.f, 99.f, 1.f, 1.f));
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
// Damage on the root should be: position of update_rect (99, 99), expanded by
// the blurring on child1, but since it is 1 pixel outside the layer, the
// expanding should be reduced by 1.
expected_damage_rect =
gfx::RectF(99.f, 99.f, 1.f, 1.f);
expected_damage_rect.Inset(-outset_left + 1,
-outset_top + 1,
-outset_right,
-outset_bottom);
EXPECT_FLOAT_RECT_EQ(expected_damage_rect, root_damage_rect);
// CASE 5: Setting the update rect on child2, which is above child1, will
// not get blurred by child1, so it does not need to get expanded.
ClearDamageForAllSurfaces(root.get());
child2->SetUpdateRect(gfx::RectF(0.f, 0.f, 1.f, 1.f));
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
// Damage on child2 should be: position of update_rect offset by the child's
// position (11, 11), and not expanded by anything.
expected_damage_rect =
gfx::RectF(11.f, 11.f, 1.f, 1.f);
EXPECT_FLOAT_RECT_EQ(expected_damage_rect, root_damage_rect);
// CASE 6: Setting the update rect on child1 will also blur the damage, so
// that any pixels needed for the blur are redrawn in the current
// frame.
ClearDamageForAllSurfaces(root.get());
child1->SetUpdateRect(gfx::RectF(0.f, 0.f, 1.f, 1.f));
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
// Damage on child1 should be: position of update_rect offset by the child's
// position (100, 100), and expanded by the damage.
expected_damage_rect =
gfx::RectF(100.f, 100.f, 1.f, 1.f);
expected_damage_rect.Inset(-outset_left,
-outset_top,
-outset_right,
-outset_bottom);
EXPECT_FLOAT_RECT_EQ(expected_damage_rect, root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForAddingAndRemovingLayer) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithOneSurface();
LayerImpl* child1 = root->children()[0];
// CASE 1: Adding a new layer should cause the appropriate damage.
//
ClearDamageForAllSurfaces(root.get());
{
scoped_ptr<LayerImpl> child2 =
LayerImpl::Create(host_impl_.active_tree(), 3);
child2->SetPosition(gfx::PointF(400.f, 380.f));
child2->SetAnchorPoint(gfx::PointF());
child2->SetBounds(gfx::Size(6, 8));
child2->SetContentBounds(gfx::Size(6, 8));
child2->SetDrawsContent(true);
root->AddChild(child2.Pass());
}
EmulateDrawingOneFrame(root.get());
// Sanity check - all 3 layers should be on the same render surface; render
// surfaces are tested elsewhere.
ASSERT_EQ(3u, root->render_surface()->layer_list().size());
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(400.f, 380.f, 6.f, 8.f), root_damage_rect);
// CASE 2: If the layer is removed, its entire old layer becomes exposed, not
// just the last update rect.
// Advance one frame without damage so that we know the damage rect is not
// leftover from the previous case.
ClearDamageForAllSurfaces(root.get());
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_TRUE(root_damage_rect.IsEmpty());
// Then, test removing child1.
root->RemoveChild(child1);
child1 = NULL;
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(100.f, 100.f, 30.f, 30.f), root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForNewUnchangedLayer) {
// If child2 is added to the layer tree, but it doesn't have any explicit
// damage of its own, it should still indeed damage the target surface.
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithOneSurface();
ClearDamageForAllSurfaces(root.get());
{
scoped_ptr<LayerImpl> child2 =
LayerImpl::Create(host_impl_.active_tree(), 3);
child2->SetPosition(gfx::PointF(400.f, 380.f));
child2->SetAnchorPoint(gfx::PointF());
child2->SetBounds(gfx::Size(6, 8));
child2->SetContentBounds(gfx::Size(6, 8));
child2->SetDrawsContent(true);
child2->ResetAllChangeTrackingForSubtree();
// Sanity check the initial conditions of the test, if these asserts
// trigger, it means the test no longer actually covers the intended
// scenario.
ASSERT_FALSE(child2->LayerPropertyChanged());
ASSERT_TRUE(child2->update_rect().IsEmpty());
root->AddChild(child2.Pass());
}
EmulateDrawingOneFrame(root.get());
// Sanity check - all 3 layers should be on the same render surface; render
// surfaces are tested elsewhere.
ASSERT_EQ(3u, root->render_surface()->layer_list().size());
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(400.f, 380.f, 6.f, 8.f), root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForMultipleLayers) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithOneSurface();
LayerImpl* child1 = root->children()[0];
// In this test we don't want the above tree manipulation to be considered
// part of the same frame.
ClearDamageForAllSurfaces(root.get());
{
scoped_ptr<LayerImpl> child2 =
LayerImpl::Create(host_impl_.active_tree(), 3);
child2->SetPosition(gfx::PointF(400.f, 380.f));
child2->SetAnchorPoint(gfx::PointF());
child2->SetBounds(gfx::Size(6, 8));
child2->SetContentBounds(gfx::Size(6, 8));
child2->SetDrawsContent(true);
root->AddChild(child2.Pass());
}
LayerImpl* child2 = root->children()[1];
EmulateDrawingOneFrame(root.get());
// Damaging two layers simultaneously should cause combined damage.
// - child1 update rect in surface space: gfx::RectF(100.f, 100.f, 1.f, 2.f);
// - child2 update rect in surface space: gfx::RectF(400.f, 380.f, 3.f, 4.f);
ClearDamageForAllSurfaces(root.get());
child1->SetUpdateRect(gfx::RectF(0.f, 0.f, 1.f, 2.f));
child2->SetUpdateRect(gfx::RectF(0.f, 0.f, 3.f, 4.f));
EmulateDrawingOneFrame(root.get());
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(
gfx::RectF(100.f, 100.f, 303.f, 284.f), root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForNestedSurfaces) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithTwoSurfaces();
LayerImpl* child1 = root->children()[0];
LayerImpl* child2 = root->children()[1];
LayerImpl* grand_child1 = root->children()[0]->children()[0];
gfx::RectF child_damage_rect;
gfx::RectF root_damage_rect;
// CASE 1: Damage to a descendant surface should propagate properly to
// ancestor surface.
ClearDamageForAllSurfaces(root.get());
grand_child1->SetOpacity(0.5f);
EmulateDrawingOneFrame(root.get());
child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(200.f, 200.f, 6.f, 8.f), child_damage_rect);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(300.f, 300.f, 6.f, 8.f), root_damage_rect);
// CASE 2: Same as previous case, but with additional damage elsewhere that
// should be properly unioned.
// - child1 surface damage in root surface space:
// gfx::RectF(300.f, 300.f, 6.f, 8.f);
// - child2 damage in root surface space:
// gfx::RectF(11.f, 11.f, 18.f, 18.f);
ClearDamageForAllSurfaces(root.get());
grand_child1->SetOpacity(0.7f);
child2->SetOpacity(0.7f);
EmulateDrawingOneFrame(root.get());
child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(200.f, 200.f, 6.f, 8.f), child_damage_rect);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(11.f, 11.f, 295.f, 297.f), root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForSurfaceChangeFromDescendantLayer) {
// If descendant layer changes and affects the content bounds of the render
// surface, then the entire descendant surface should be damaged, and it
// should damage its ancestor surface with the old and new surface regions.
// This is a tricky case, since only the first grand_child changes, but the
// entire surface should be marked dirty.
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithTwoSurfaces();
LayerImpl* child1 = root->children()[0];
LayerImpl* grand_child1 = root->children()[0]->children()[0];
gfx::RectF child_damage_rect;
gfx::RectF root_damage_rect;
ClearDamageForAllSurfaces(root.get());
grand_child1->SetPosition(gfx::PointF(195.f, 205.f));
EmulateDrawingOneFrame(root.get());
child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
// The new surface bounds should be damaged entirely, even though only one of
// the layers changed.
EXPECT_FLOAT_RECT_EQ(gfx::RectF(190.f, 190.f, 11.f, 23.f), child_damage_rect);
// Damage to the root surface should be the union of child1's *entire* render
// surface (in target space), and its old exposed area (also in target
// space).
EXPECT_FLOAT_RECT_EQ(gfx::RectF(290.f, 290.f, 16.f, 23.f), root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForSurfaceChangeFromAncestorLayer) {
// An ancestor/owning layer changes that affects the position/transform of
// the render surface. Note that in this case, the layer_property_changed flag
// already propagates to the subtree (tested in LayerImpltest), which damages
// the entire child1 surface, but the damage tracker still needs the correct
// logic to compute the exposed region on the root surface.
// TODO(shawnsingh): the expectations of this test case should change when we
// add support for a unique scissor_rect per RenderSurface. In that case, the
// child1 surface should be completely unchanged, since we are only
// transforming it, while the root surface would be damaged appropriately.
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithTwoSurfaces();
LayerImpl* child1 = root->children()[0];
gfx::RectF child_damage_rect;
gfx::RectF root_damage_rect;
ClearDamageForAllSurfaces(root.get());
child1->SetPosition(gfx::PointF(50.f, 50.f));
EmulateDrawingOneFrame(root.get());
child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
// The new surface bounds should be damaged entirely.
EXPECT_FLOAT_RECT_EQ(gfx::RectF(190.f, 190.f, 16.f, 18.f), child_damage_rect);
// The entire child1 surface and the old exposed child1 surface should damage
// the root surface.
// - old child1 surface in target space: gfx::RectF(290.f, 290.f, 16.f, 18.f)
// - new child1 surface in target space: gfx::RectF(240.f, 240.f, 16.f, 18.f)
EXPECT_FLOAT_RECT_EQ(gfx::RectF(240.f, 240.f, 66.f, 68.f), root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyDamageForAddingAndRemovingRenderSurfaces) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithTwoSurfaces();
LayerImpl* child1 = root->children()[0];
gfx::RectF child_damage_rect;
gfx::RectF root_damage_rect;
// CASE 1: If a descendant surface disappears, its entire old area becomes
// exposed.
ClearDamageForAllSurfaces(root.get());
child1->SetOpacity(1.f);
child1->SetForceRenderSurface(false);
EmulateDrawingOneFrame(root.get());
// Sanity check that there is only one surface now.
ASSERT_FALSE(child1->render_surface());
ASSERT_EQ(4u, root->render_surface()->layer_list().size());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(290.f, 290.f, 16.f, 18.f), root_damage_rect);
// CASE 2: If a descendant surface appears, its entire old area becomes
// exposed.
// Cycle one frame of no change, just to sanity check that the next rect is
// not because of the old damage state.
ClearDamageForAllSurfaces(root.get());
EmulateDrawingOneFrame(root.get());
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_TRUE(root_damage_rect.IsEmpty());
// Then change the tree so that the render surface is added back.
ClearDamageForAllSurfaces(root.get());
child1->SetOpacity(0.5f);
child1->SetForceRenderSurface(true);
EmulateDrawingOneFrame(root.get());
// Sanity check that there is a new surface now.
ASSERT_TRUE(child1->render_surface());
EXPECT_EQ(3u, root->render_surface()->layer_list().size());
EXPECT_EQ(2u, child1->render_surface()->layer_list().size());
child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_FLOAT_RECT_EQ(gfx::RectF(190.f, 190.f, 16.f, 18.f), child_damage_rect);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(290.f, 290.f, 16.f, 18.f), root_damage_rect);
}
TEST_F(DamageTrackerTest, VerifyNoDamageWhenNothingChanged) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithTwoSurfaces();
LayerImpl* child1 = root->children()[0];
gfx::RectF child_damage_rect;
gfx::RectF root_damage_rect;
// CASE 1: If nothing changes, the damage rect should be empty.
//
ClearDamageForAllSurfaces(root.get());
EmulateDrawingOneFrame(root.get());
child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_TRUE(child_damage_rect.IsEmpty());
EXPECT_TRUE(root_damage_rect.IsEmpty());
// CASE 2: If nothing changes twice in a row, the damage rect should still be
// empty.
//
ClearDamageForAllSurfaces(root.get());
EmulateDrawingOneFrame(root.get());
child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_TRUE(child_damage_rect.IsEmpty());
EXPECT_TRUE(root_damage_rect.IsEmpty());
}
TEST_F(DamageTrackerTest, VerifyNoDamageForUpdateRectThatDoesNotDrawContent) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithTwoSurfaces();
LayerImpl* child1 = root->children()[0];
gfx::RectF child_damage_rect;
gfx::RectF root_damage_rect;
// In our specific tree, the update rect of child1 should not cause any
// damage to any surface because it does not actually draw content.
ClearDamageForAllSurfaces(root.get());
child1->SetUpdateRect(gfx::RectF(0.f, 0.f, 1.f, 2.f));
EmulateDrawingOneFrame(root.get());
child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
EXPECT_TRUE(child_damage_rect.IsEmpty());
EXPECT_TRUE(root_damage_rect.IsEmpty());
}
TEST_F(DamageTrackerTest, VerifyDamageForReplica) {
scoped_ptr<LayerImpl> root = CreateAndSetUpTestTreeWithTwoSurfaces();
LayerImpl* child1 = root->children()[0];
LayerImpl* grand_child1 = child1->children()[0];
LayerImpl* grand_child2 = child1->children()[1];
// Damage on a surface that has a reflection should cause the target surface
// to receive the surface's damage and the surface's reflected damage.
// For this test case, we modify grand_child2, and add grand_child3 to extend
// the bounds of child1's surface. This way, we can test reflection changes
// without changing content_bounds of the surface.
grand_child2->SetPosition(gfx::PointF(180.f, 180.f));
{
scoped_ptr<LayerImpl> grand_child3 =
LayerImpl::Create(host_impl_.active_tree(), 6);
grand_child3->SetPosition(gfx::PointF(240.f, 240.f));
grand_child3->SetAnchorPoint(gfx::PointF());
grand_child3->SetBounds(gfx::Size(10, 10));
grand_child3->SetContentBounds(gfx::Size(10, 10));
grand_child3->SetDrawsContent(true);
child1->AddChild(grand_child3.Pass());
}
child1->SetOpacity(0.5f);
EmulateDrawingOneFrame(root.get());
// CASE 1: adding a reflection about the left edge of grand_child1.
//
ClearDamageForAllSurfaces(root.get());
{
scoped_ptr<LayerImpl> grand_child1_replica =
LayerImpl::Create(host_impl_.active_tree(), 7);
grand_child1_replica->SetPosition(gfx::PointF());
grand_child1_replica->SetAnchorPoint(gfx::PointF());
gfx::Transform reflection;
reflection.Scale3d(-1.0, 1.0, 1.0);
grand_child1_replica->SetTransform(reflection);
grand_child1->SetReplicaLayer(grand_child1_replica.Pass());
}
EmulateDrawingOneFrame(root.get());
gfx::RectF grand_child_damage_rect =
grand_child1->render_surface()->damage_tracker()->
current_damage_rect();
gfx::RectF child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
gfx::RectF root_damage_rect =
root->render_surface()->damage_tracker()->current_damage_rect();
// The grand_child surface damage should not include its own replica. The
// child surface damage should include the normal and replica surfaces.
EXPECT_FLOAT_RECT_EQ(gfx::RectF(0.f, 0.f, 6.f, 8.f), grand_child_damage_rect);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(194.f, 200.f, 12.f, 8.f), child_damage_rect);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(294.f, 300.f, 12.f, 8.f), root_damage_rect);
// CASE 2: moving the descendant surface should cause both the original and
// reflected areas to be damaged on the target.
ClearDamageForAllSurfaces(root.get());
gfx::Rect old_content_rect = child1->render_surface()->content_rect();
grand_child1->SetPosition(gfx::PointF(195.f, 205.f));
EmulateDrawingOneFrame(root.get());
ASSERT_EQ(old_content_rect.width(),
child1->render_surface()->content_rect().width());
ASSERT_EQ(old_content_rect.height(),
child1->render_surface()->content_rect().height());
grand_child_damage_rect =
grand_child1->render_surface()->
damage_tracker()->current_damage_rect();
child_damage_rect =
child1->render_surface()->damage_tracker()->current_damage_rect();
root_damage_rect =