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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/layers/effect_tree_layer_list_iterator.h"
#include <memory>
#include <vector>
#include "base/memory/ptr_util.h"
#include "cc/layers/layer.h"
#include "cc/test/fake_layer_tree_host.h"
#include "cc/test/layer_tree_impl_test_base.h"
#include "cc/test/test_task_graph_runner.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/geometry/transform.h"
namespace cc {
namespace {
class TestLayerImpl : public LayerImpl {
public:
static std::unique_ptr<TestLayerImpl> Create(LayerTreeImpl* tree, int id) {
return base::WrapUnique(new TestLayerImpl(tree, id));
}
~TestLayerImpl() override = default;
int count_;
private:
explicit TestLayerImpl(LayerTreeImpl* tree, int id)
: LayerImpl(tree, id), count_(-1) {
SetBounds(gfx::Size(100, 100));
SetDrawsContent(true);
}
};
#define EXPECT_COUNT(layer, target, contrib, itself) \
if (GetRenderSurface(layer)) { \
EXPECT_EQ(target, target_surface_count_[layer->effect_tree_index()]); \
EXPECT_EQ(contrib, \
contributing_surface_count_[layer->effect_tree_index()]); \
} \
EXPECT_EQ(itself, layer->count_);
class EffectTreeLayerListIteratorTest : public LayerTreeImplTestBase,
public testing::Test {
public:
void SetUp() override {
// This test suite needs the root layer to be TestLayerImpl.
LayerTreeImpl* active_tree = host_impl()->active_tree();
active_tree->DetachLayers();
active_tree->property_trees()->clear();
active_tree->SetRootLayerForTesting(TestLayerImpl::Create(active_tree, 1));
root_layer()->SetBounds(gfx::Size(1, 1));
SetupRootProperties(root_layer());
}
void IterateFrontToBack() {
ResetCounts();
int count = 0;
for (EffectTreeLayerListIterator it(host_impl()->active_tree());
it.state() != EffectTreeLayerListIterator::State::kEnd;
++it, ++count) {
switch (it.state()) {
case EffectTreeLayerListIterator::State::kLayer:
static_cast<TestLayerImpl*>(it.current_layer())->count_ = count;
break;
case EffectTreeLayerListIterator::State::kTargetSurface:
target_surface_count_[it.target_render_surface()->EffectTreeIndex()] =
count;
break;
case EffectTreeLayerListIterator::State::kContributingSurface:
contributing_surface_count_[it.current_render_surface()
->EffectTreeIndex()] = count;
break;
default:
NOTREACHED();
}
}
}
void ResetCounts() {
for (LayerImpl* layer : *host_impl()->active_tree()) {
static_cast<TestLayerImpl*>(layer)->count_ = -1;
}
target_surface_count_ = std::vector<int>(
host_impl()->active_tree()->property_trees()->effect_tree().size(), -1);
contributing_surface_count_ = std::vector<int>(
host_impl()->active_tree()->property_trees()->effect_tree().size(), -1);
}
protected:
// Tracks when each render surface is visited as a target surface or
// contributing surface. Indexed by effect node id.
std::vector<int> target_surface_count_;
std::vector<int> contributing_surface_count_;
};
TEST_F(EffectTreeLayerListIteratorTest, TreeWithNoDrawnLayers) {
auto* root = static_cast<TestLayerImpl*>(root_layer());
root->SetDrawsContent(false);
UpdateActiveTreeDrawProperties();
IterateFrontToBack();
EXPECT_COUNT(root, 0, -1, -1);
}
TEST_F(EffectTreeLayerListIteratorTest, SimpleTree) {
auto* root = static_cast<TestLayerImpl*>(root_layer());
auto* first = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root, first);
auto* second = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root, second);
auto* third = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root, third);
auto* fourth = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root, fourth);
UpdateActiveTreeDrawProperties();
IterateFrontToBack();
EXPECT_COUNT(root, 5, -1, 4);
EXPECT_COUNT(first, 5, -1, 3);
EXPECT_COUNT(second, 5, -1, 2);
EXPECT_COUNT(third, 5, -1, 1);
EXPECT_COUNT(fourth, 5, -1, 0);
}
TEST_F(EffectTreeLayerListIteratorTest, ComplexTreeMultiSurface) {
auto* root = static_cast<TestLayerImpl*>(root_layer());
auto* root1 = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root, root1);
auto* root2 = AddLayerInActiveTree<TestLayerImpl>();
root2->SetDrawsContent(false);
CopyProperties(root, root2);
CreateEffectNode(root2).render_surface_reason = RenderSurfaceReason::kTest;
auto* root21 = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root2, root21);
auto* root22 = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root2, root22);
CreateEffectNode(root22).render_surface_reason = RenderSurfaceReason::kTest;
auto* root221 = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root22, root221);
auto* root23 = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root2, root23);
CreateEffectNode(root23).render_surface_reason = RenderSurfaceReason::kTest;
auto* root231 = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root23, root231);
auto* root3 = AddLayerInActiveTree<TestLayerImpl>();
CopyProperties(root, root3);
UpdateActiveTreeDrawProperties();
IterateFrontToBack();
EXPECT_COUNT(root, 14, -1, 13);
EXPECT_COUNT(root1, 14, -1, 12);
EXPECT_COUNT(root2, 10, 11, -1);
EXPECT_COUNT(root21, 10, 11, 9);
EXPECT_COUNT(root22, 7, 8, 6);
EXPECT_COUNT(root221, 7, 8, 5);
EXPECT_COUNT(root23, 3, 4, 2);
EXPECT_COUNT(root231, 3, 4, 1);
EXPECT_COUNT(root3, 14, -1, 0);
}
} // namespace
} // namespace cc
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