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// Copyright 2012 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.h"
#include "base/file_util.h"
#include "base/files/file_path.h"
#include "base/path_service.h"
#include "base/strings/string_piece.h"
#include "cc/layers/content_layer.h"
#include "cc/layers/nine_patch_layer.h"
#include "cc/layers/solid_color_layer.h"
#include "cc/test/fake_content_layer_client.h"
#include "cc/test/layer_tree_json_parser.h"
#include "cc/test/layer_tree_test.h"
#include "cc/test/paths.h"
namespace cc {
namespace {
static const int kTimeLimitMillis = 2000;
static const int kWarmupRuns = 5;
static const int kTimeCheckInterval = 10;
class LayerTreeHostPerfTest : public LayerTreeTest {
public:
LayerTreeHostPerfTest()
: num_draws_(0),
full_damage_each_frame_(false),
animation_driven_drawing_(false),
measure_commit_cost_(false) {
fake_content_layer_client_.set_paint_all_opaque(true);
}
virtual void BeginTest() OVERRIDE {
BuildTree();
PostSetNeedsCommitToMainThread();
}
virtual void Animate(base::TimeTicks monotonic_time) OVERRIDE {
if (animation_driven_drawing_ && !TestEnded())
layer_tree_host()->SetNeedsAnimate();
}
virtual void BeginCommitOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
if (measure_commit_cost_)
commit_start_time_ = base::TimeTicks::HighResNow();
}
virtual void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
if (measure_commit_cost_ && num_draws_ >= kWarmupRuns)
total_commit_time_ += base::TimeTicks::HighResNow() - commit_start_time_;
}
virtual void DrawLayersOnThread(LayerTreeHostImpl* impl) OVERRIDE {
++num_draws_;
if (num_draws_ == kWarmupRuns)
start_time_ = base::TimeTicks::HighResNow();
if (!start_time_.is_null() && (num_draws_ % kTimeCheckInterval) == 0) {
base::TimeDelta elapsed = base::TimeTicks::HighResNow() - start_time_;
if (elapsed >= base::TimeDelta::FromMilliseconds(kTimeLimitMillis)) {
elapsed_ = elapsed;
EndTest();
return;
}
}
if (!animation_driven_drawing_)
impl->SetNeedsRedraw();
if (full_damage_each_frame_)
impl->SetFullRootLayerDamage();
}
virtual void BuildTree() {}
virtual void AfterTest() OVERRIDE {
// Format matches chrome/test/perf/perf_test.h:PrintResult
printf("*RESULT %s: frames= %.2f runs/s\n",
test_name_.c_str(),
num_draws_ / elapsed_.InSecondsF());
if (measure_commit_cost_) {
printf("*RESULT %s: commit_cost= %.2f ms/commit\n",
test_name_.c_str(),
total_commit_time_.InMillisecondsF() / num_draws_);
}
}
protected:
base::TimeTicks start_time_;
int num_draws_;
std::string test_name_;
base::TimeDelta elapsed_;
FakeContentLayerClient fake_content_layer_client_;
bool full_damage_each_frame_;
bool animation_driven_drawing_;
bool measure_commit_cost_;
base::TimeTicks commit_start_time_;
base::TimeDelta total_commit_time_;
};
class LayerTreeHostPerfTestJsonReader : public LayerTreeHostPerfTest {
public:
LayerTreeHostPerfTestJsonReader()
: LayerTreeHostPerfTest() {
}
void ReadTestFile(std::string name) {
test_name_ = name;
base::FilePath test_data_dir;
ASSERT_TRUE(PathService::Get(cc::DIR_TEST_DATA, &test_data_dir));
base::FilePath json_file = test_data_dir.AppendASCII(name + ".json");
ASSERT_TRUE(file_util::ReadFileToString(json_file, &json_));
}
virtual void BuildTree() OVERRIDE {
gfx::Size viewport = gfx::Size(720, 1038);
layer_tree_host()->SetViewportSize(viewport);
scoped_refptr<Layer> root = ParseTreeFromJson(json_,
&fake_content_layer_client_);
ASSERT_TRUE(root.get());
layer_tree_host()->SetRootLayer(root);
}
private:
std::string json_;
};
// Simulates a tab switcher scene with two stacks of 10 tabs each.
TEST_F(LayerTreeHostPerfTestJsonReader, TenTenSingleThread) {
ReadTestFile("10_10_layer_tree");
RunTest(false, false, false);
}
// Simulates a tab switcher scene with two stacks of 10 tabs each.
TEST_F(LayerTreeHostPerfTestJsonReader,
TenTenSingleThread_FullDamageEachFrame) {
full_damage_each_frame_ = true;
ReadTestFile("10_10_layer_tree");
RunTest(false, false, false);
}
// Simulates main-thread scrolling on each frame.
class ScrollingLayerTreePerfTest : public LayerTreeHostPerfTestJsonReader {
public:
ScrollingLayerTreePerfTest()
: LayerTreeHostPerfTestJsonReader() {
}
virtual void BuildTree() OVERRIDE {
LayerTreeHostPerfTestJsonReader::BuildTree();
scrollable_ = layer_tree_host()->root_layer()->children()[1];
ASSERT_TRUE(scrollable_);
}
virtual void Layout() OVERRIDE {
static const gfx::Vector2d delta = gfx::Vector2d(0, 10);
scrollable_->SetScrollOffset(scrollable_->scroll_offset() + delta);
}
private:
scoped_refptr<Layer> scrollable_;
};
TEST_F(ScrollingLayerTreePerfTest, LongScrollablePage) {
ReadTestFile("long_scrollable_page");
RunTest(false, false, false);
}
class ImplSidePaintingPerfTest : public LayerTreeHostPerfTestJsonReader {
protected:
// Run test with impl-side painting.
void RunTestWithImplSidePainting() { RunTest(true, false, true); }
};
// Simulates a page with several large, transformed and animated layers.
TEST_F(ImplSidePaintingPerfTest, HeavyPage) {
animation_driven_drawing_ = true;
measure_commit_cost_ = true;
ReadTestFile("heavy_layer_tree");
RunTestWithImplSidePainting();
}
} // namespace
} // namespace cc
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