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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/viz/service/display/overdraw_tracker.h"
#include <memory>
#include <optional>
#include <vector>
#include "base/time/time.h"
#include "components/viz/common/quads/aggregated_render_pass.h"
#include "components/viz/common/quads/solid_color_draw_quad.h"
#include "components/viz/service/display/aggregated_frame.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/transform.h"
namespace viz {
namespace {
using OverdrawTrackerTest = testing::Test;
AggregatedFrame MakeAggregatedFrame(const gfx::Rect& output_rect) {
static AggregatedRenderPassId::Generator id_generator;
AggregatedFrame frame;
frame.render_pass_list.push_back(std::make_unique<AggregatedRenderPass>());
frame.render_pass_list.back()->SetNew(id_generator.GenerateNextId(),
output_rect, output_rect,
gfx::Transform());
return frame;
}
void AppendDrawQuad(AggregatedFrame* frame,
const gfx::Rect& visible_rect,
const gfx::Transform& transform = gfx::Transform(),
const std::optional<gfx::Rect>& clip_rect = std::nullopt) {
auto& root_render_pass = frame->render_pass_list.back();
auto* sqs = root_render_pass->CreateAndAppendSharedQuadState();
sqs->quad_to_target_transform = transform;
sqs->clip_rect = clip_rect;
auto* quad = root_render_pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>();
quad->SetAll(sqs, visible_rect, visible_rect, false, SkColor4f(), true);
}
TEST_F(OverdrawTrackerTest, OverdrawCalculations) {
AggregatedFrame frame = MakeAggregatedFrame(gfx::Rect(20, 20));
for (const auto& rect :
{gfx::Rect(0, 0, 20, 20), gfx::Rect(10, 0, 10, 20),
gfx::Rect(10, 10, 10, 10), gfx::Rect(5, 5, 10, 10)}) {
AppendDrawQuad(&frame, rect);
}
EXPECT_EQ(OverdrawTracker::EstimateOverdraw(&frame), 2.0);
}
TEST_F(OverdrawTrackerTest, OverdrawCalculationsOfQuadsWithTransform) {
{
// Check that Transforms of quads are taken into account.
AggregatedFrame frame = MakeAggregatedFrame(gfx::Rect(20, 20));
AppendDrawQuad(&frame, gfx::Rect(10, 10), gfx::Transform::MakeScale(2));
EXPECT_EQ(OverdrawTracker::EstimateOverdraw(&frame), 1.0);
}
{
// Check that the quads with transforms that do not preserve axis alignment
// are ignored.
AggregatedFrame frame = MakeAggregatedFrame(gfx::Rect(20, 20));
gfx::Transform rotation_transform;
rotation_transform.Rotate(5.0f);
AppendDrawQuad(&frame, gfx::Rect(10, 10), rotation_transform);
EXPECT_EQ(OverdrawTracker::EstimateOverdraw(&frame), 0.0);
}
}
TEST_F(OverdrawTrackerTest, OverdrawCalculationsOfQuadsWithClip) {
{
AggregatedFrame frame = MakeAggregatedFrame(gfx::Rect(20, 20));
AppendDrawQuad(&frame, gfx::Rect(100, 100), gfx::Transform(),
gfx::Rect(20, 20));
EXPECT_EQ(OverdrawTracker::EstimateOverdraw(&frame), 1.0f);
}
{
AggregatedFrame frame = MakeAggregatedFrame(gfx::Rect(20, 20));
AppendDrawQuad(&frame, gfx::Rect(100, 100), gfx::Transform(),
gfx::Rect(5, 5, 10, 10));
EXPECT_EQ(OverdrawTracker::EstimateOverdraw(&frame), 0.25f);
}
}
TEST_F(OverdrawTrackerTest, OverdrawRecording) {
OverdrawTracker::Settings settings;
settings.interval_length_in_seconds = 2;
OverdrawTracker tracker(settings);
base::TimeTicks start_time = tracker.start_time_for_testing();
{
AggregatedFrame frame = MakeAggregatedFrame(gfx::Rect(10, 10));
AppendDrawQuad(&frame, gfx::Rect(10, 10)); // overdraw is 1.0f.
// Record overdraw at the 0th interval.
tracker.EstimateAndRecordOverdraw(&frame, start_time);
auto data = tracker.TakeDataAsTimeSeries();
EXPECT_THAT(data, testing::ElementsAreArray({1.0f}));
tracker.Reset();
}
{
AggregatedFrame frame = MakeAggregatedFrame(gfx::Rect(10, 10));
AppendDrawQuad(&frame, gfx::Rect(10, 10)); // overdraw is 1.0f.
// Record overdraw at the 0th interval.
tracker.EstimateAndRecordOverdraw(&frame, start_time);
AppendDrawQuad(&frame, gfx::Rect(5, 10)); // overdraw is 1.5f.
// Update overdraw at the 0th interval.
tracker.EstimateAndRecordOverdraw(&frame, start_time + base::Seconds(1));
auto data = tracker.TakeDataAsTimeSeries();
EXPECT_THAT(data, testing::ElementsAreArray(
{1.25f})); // average overdraw is 1.25f.
tracker.Reset();
}
{
AggregatedFrame frame = MakeAggregatedFrame(gfx::Rect(10, 10));
AppendDrawQuad(&frame, gfx::Rect(10, 10)); // overdraw is 1.0f.
// Record overdraw at the 0th interval.
tracker.EstimateAndRecordOverdraw(&frame, start_time);
AppendDrawQuad(&frame, gfx::Rect(5, 10)); // overdraw is 1.5f.
// Record overdraw at a later interval.
tracker.EstimateAndRecordOverdraw(&frame, start_time + base::Seconds(8));
auto data = tracker.TakeDataAsTimeSeries();
EXPECT_THAT(data,
testing::ElementsAreArray({1.0f, 0.0f, 0.0f, 0.0f, 1.5f}));
tracker.Reset();
}
}
TEST_F(OverdrawTrackerTest, RequestDataWithoutRecordingAnyFrame) {
OverdrawTracker::Settings settings;
OverdrawTracker tracker(settings);
auto data = tracker.TakeDataAsTimeSeries();
EXPECT_EQ(data.size(), 0u);
}
} // namespace
} // namespace viz
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