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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gl/gpu_timing.h"
#include <stdint.h>
#include <memory>
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gl/gl_context_stub.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_mock.h"
#include "ui/gl/gl_surface_stub.h"
#include "ui/gl/gpu_preference.h"
#include "ui/gl/gpu_timing_fake.h"
#include "ui/gl/init/gl_factory.h"
#include "ui/gl/test/gl_surface_test_support.h"
namespace gl {
using ::testing::Exactly;
using ::testing::NotNull;
using ::testing::DoAll;
using ::testing::Return;
using ::testing::SetArgPointee;
class GPUTimingTest : public testing::Test {
public:
void SetUp() override {
setup_ = false;
cpu_time_bounded_ = false;
}
void TearDown() override {
context_ = nullptr;
surface_ = nullptr;
if (setup_) {
MockGLInterface::SetGLInterface(nullptr);
GLSurfaceTestSupport::ShutdownGL(display_);
}
setup_ = false;
cpu_time_bounded_ = false;
gl_.reset();
gpu_timing_fake_queries_.Reset();
}
void SetupGLContext(const char* gl_version, const char* gl_extensions) {
ASSERT_FALSE(setup_) << "Cannot setup GL context twice.";
SetGLGetProcAddressProc(MockGLInterface::GetGLProcAddress);
display_ = GLSurfaceTestSupport::InitializeOneOffWithMockBindings();
gl_ = std::make_unique<::testing::StrictMock<MockGLInterface>>();
MockGLInterface::SetGLInterface(gl_.get());
context_ = new GLContextStub;
context_->SetExtensionsString(gl_extensions);
context_->SetGLVersionString(gl_version);
surface_ = new GLSurfaceStub;
context_->MakeCurrent(surface_.get());
gpu_timing_fake_queries_.Reset();
setup_ = true;
}
scoped_refptr<GPUTimingClient> CreateGPUTimingClient() {
if (!setup_) {
SetupGLContext("2.0", "");
}
scoped_refptr<GPUTimingClient> client = context_->CreateGPUTimingClient();
if (!cpu_time_bounded_) {
client->SetCpuTimeForTesting(
base::BindRepeating(&GPUTimingFake::GetFakeCPUTime));
cpu_time_bounded_ = true;
}
return client;
}
protected:
bool setup_ = false;
bool cpu_time_bounded_ = false;
std::unique_ptr<::testing::StrictMock<MockGLInterface>> gl_;
scoped_refptr<GLContextStub> context_;
scoped_refptr<GLSurfaceStub> surface_;
GPUTimingFake gpu_timing_fake_queries_;
raw_ptr<GLDisplay> display_ = nullptr;
};
TEST_F(GPUTimingTest, FakeTimerTest) {
scoped_refptr<GPUTimingClient> gpu_timing_client = CreateGPUTimingClient();
// Tests that we can properly set fake cpu times.
gpu_timing_fake_queries_.SetCurrentCPUTime(123);
EXPECT_EQ(123, gpu_timing_client->GetCurrentCPUTime());
base::RepeatingCallback<int64_t(void)> empty;
gpu_timing_client->SetCpuTimeForTesting(empty);
EXPECT_NE(123, gpu_timing_client->GetCurrentCPUTime());
}
TEST_F(GPUTimingTest, ForceTimeElapsedQuery) {
// Test that forcing time elapsed query affects all clients.
SetupGLContext("3.2", "GL_ARB_timer_query");
scoped_refptr<GPUTimingClient> client1 = CreateGPUTimingClient();
EXPECT_FALSE(client1->IsForceTimeElapsedQuery());
scoped_refptr<GPUTimingClient> client_force = CreateGPUTimingClient();
EXPECT_FALSE(client1->IsForceTimeElapsedQuery());
client_force->ForceTimeElapsedQuery();
EXPECT_TRUE(client1->IsForceTimeElapsedQuery());
EXPECT_TRUE(client1->IsForceTimeElapsedQuery());
scoped_refptr<GPUTimingClient> client2 = CreateGPUTimingClient();
EXPECT_TRUE(client2->IsForceTimeElapsedQuery());
}
TEST_F(GPUTimingTest, QueryTimeStampTest) {
SetupGLContext("3.2", "GL_ARB_timer_query");
scoped_refptr<GPUTimingClient> client = CreateGPUTimingClient();
std::unique_ptr<GPUTimer> gpu_timer = client->CreateGPUTimer(false);
const int64_t begin_cpu_time = 1230;
const int64_t begin_gl_time = 10 * base::Time::kNanosecondsPerMicrosecond;
const int64_t cpu_gl_offset =
begin_gl_time / base::Time::kNanosecondsPerMicrosecond - begin_cpu_time;
gpu_timing_fake_queries_.SetCPUGLOffset(cpu_gl_offset);
gpu_timing_fake_queries_.SetCurrentCPUTime(begin_cpu_time);
gpu_timing_fake_queries_.ExpectGPUTimeStampQuery(*gl_, false);
gpu_timer->QueryTimeStamp();
gpu_timing_fake_queries_.SetCurrentCPUTime(begin_cpu_time - 1);
EXPECT_FALSE(gpu_timer->IsAvailable());
gpu_timing_fake_queries_.SetCurrentCPUTime(begin_cpu_time);
EXPECT_TRUE(gpu_timer->IsAvailable());
gpu_timing_fake_queries_.SetCurrentCPUTime(begin_cpu_time + 1);
EXPECT_TRUE(gpu_timer->IsAvailable());
EXPECT_EQ(0, gpu_timer->GetDeltaElapsed());
int64_t start, end;
gpu_timer->GetStartEndTimestamps(&start, &end);
EXPECT_EQ(begin_cpu_time, start);
EXPECT_EQ(begin_cpu_time, end);
}
TEST_F(GPUTimingTest, QueryTimeStampUsingElapsedTest) {
// Test timestamp queries using GL_EXT_timer_query which does not support
// timestamp queries. Internally we fall back to time elapsed queries.
SetupGLContext("3.2", "GL_EXT_timer_query");
scoped_refptr<GPUTimingClient> client = CreateGPUTimingClient();
std::unique_ptr<GPUTimer> gpu_timer = client->CreateGPUTimer(false);
ASSERT_TRUE(client->IsForceTimeElapsedQuery());
const int64_t begin_cpu_time = 123;
const int64_t begin_gl_time = 10 * base::Time::kNanosecondsPerMicrosecond;
const int64_t cpu_gl_offset = begin_gl_time - begin_cpu_time;
gpu_timing_fake_queries_.SetCPUGLOffset(cpu_gl_offset);
gpu_timing_fake_queries_.SetCurrentCPUTime(begin_cpu_time);
gpu_timing_fake_queries_.ExpectGPUTimeStampQuery(*gl_, true);
gpu_timer->QueryTimeStamp();
gpu_timing_fake_queries_.SetCurrentCPUTime(begin_cpu_time - 1);
EXPECT_FALSE(gpu_timer->IsAvailable());
gpu_timing_fake_queries_.SetCurrentCPUTime(begin_cpu_time + 1);
EXPECT_TRUE(gpu_timer->IsAvailable());
EXPECT_EQ(0, gpu_timer->GetDeltaElapsed());
int64_t start, end;
gpu_timer->GetStartEndTimestamps(&start, &end);
EXPECT_EQ(begin_cpu_time, start);
EXPECT_EQ(begin_cpu_time, end);
}
TEST_F(GPUTimingTest, QueryTimestampUsingElapsedARBTest) {
// Test timestamp queries on platforms with GL_ARB_timer_query but still lack
// support for timestamp queries
SetupGLContext("3.2", "GL_ARB_timer_query");
scoped_refptr<GPUTimingClient> client = CreateGPUTimingClient();
std::unique_ptr<GPUTimer> gpu_timer = client->CreateGPUTimer(false);
const int64_t begin_cpu_time = 123;
const int64_t begin_gl_time = 10 * base::Time::kNanosecondsPerMicrosecond;
const int64_t cpu_gl_offset = begin_gl_time - begin_cpu_time;
gpu_timing_fake_queries_.SetCPUGLOffset(cpu_gl_offset);
gpu_timing_fake_queries_.SetCurrentCPUTime(begin_cpu_time);
gpu_timing_fake_queries_.ExpectGPUTimeStampQuery(*gl_, true);
// Custom mock override to ensure the timestamp bits are 0
EXPECT_CALL(*gl_, GetQueryiv(GL_TIMESTAMP, GL_QUERY_COUNTER_BITS, NotNull()))
.Times(Exactly(1))
.WillRepeatedly(DoAll(SetArgPointee<2>(0), Return()));
gpu_timer->QueryTimeStamp();
gpu_timing_fake_queries_.SetCurrentCPUTime(begin_cpu_time - 1);
EXPECT_FALSE(gpu_timer->IsAvailable());
gpu_timing_fake_queries_.SetCurrentCPUTime(begin_cpu_time + 1);
EXPECT_TRUE(gpu_timer->IsAvailable());
EXPECT_EQ(0, gpu_timer->GetDeltaElapsed());
int64_t start, end;
gpu_timer->GetStartEndTimestamps(&start, &end);
// Force time elapsed won't be set until a query is actually attempted
ASSERT_TRUE(client->IsForceTimeElapsedQuery());
EXPECT_EQ(begin_cpu_time, start);
EXPECT_EQ(begin_cpu_time, end);
}
} // namespace gl
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