decoder_perftest.cc | Explore in Territory

// 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.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include <memory>

#include "base/command_line.h"
#include "base/containers/heap_array.h"
#include "base/memory/raw_ptr.h"
#include "base/process/process.h"
#include "base/threading/platform_thread.h"
#include "base/time/time.h"
#include "gpu/command_buffer/client/gles2_cmd_helper.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/client/gpu_control.h"
#include "gpu/command_buffer/client/shared_memory_limits.h"
#include "gpu/command_buffer/client/transfer_buffer.h"
#include "gpu/command_buffer/common/constants.h"
#include "gpu/command_buffer/common/context_creation_attribs.h"
#include "gpu/command_buffer/common/sync_token.h"
#include "gpu/command_buffer/service/command_buffer_direct.h"
#include "gpu/command_buffer/service/context_group.h"
#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
#include "gpu/command_buffer/service/gpu_switches.h"
#include "gpu/command_buffer/service/gpu_tracer.h"
#include "gpu/command_buffer/service/logger.h"
#include "gpu/command_buffer/service/memory_tracking.h"
#include "gpu/command_buffer/service/passthrough_discardable_manager.h"
#include "gpu/command_buffer/service/service_discardable_manager.h"
#include "gpu/command_buffer/service/service_utils.h"
#include "gpu/command_buffer/service/shared_image/shared_image_manager.h"
#include "gpu/command_buffer/service/sync_point_manager.h"
#include "gpu/command_buffer/service/transfer_buffer_manager.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/perf/perf_result_reporter.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gl/gl_context_stub.h"
#include "ui/gl/gl_share_group.h"
#include "ui/gl/gl_surface_stub.h"
#include "ui/gl/gl_utils.h"
#include "ui/gl/init/gl_factory.h"

namespace gpu {
namespace {

constexpr int kDefaultRuns = …;
constexpr int kDefaultIterations = …;

// A command buffer that can record and replay commands
// This goes through 3 states, allowing setting up of initial state before
// record/replay a tight loop:
// - kDirect directly sends commands to the service on Flush
// - kRecord doesn't send anything on Flush, but keeps track of the put pointer
// - kReplay allows replaying of commands recorded in the kRecord state
//
// The initial state is kDirect. AdvanceMode is used to transition from one
// state to the next. The transition from kDirect to kRecord requires the
// GetBuffer to have been freed, allowing a fresh start for record.
class RecordReplayCommandBuffer : public CommandBufferDirect { … };

GpuPreferences GetGpuPreferences() { … }

// This wraps a RecordReplayCommandBuffer and gives it a back-end decoder, as
// well as a front-end GLES2Implementation. This allows recording commands at
// the GL level and replaying them to the driver (or a stub).
class RecordReplayContext : public GpuControl { … };

// This abstracts the performance capture loop, iterating through a warmup run
// and then a number of performance capturing runs.
class PerfIterator { … };

class DecoderPerfTest : public testing::Test { … };

constexpr const char kVertexShader[] = …;

constexpr const char kFragmentShader[] = …;

constexpr const float kVertices[] = …;

// Measures a loop with Uniform2f and DrawArrays.
TEST_F(DecoderPerfTest, BasicDraw) { … }

// Measures a loop with changing the texture binding between draws.
TEST_F(DecoderPerfTest, TextureDraw) { … }

// Measures a loop with changing the program between draws.
TEST_F(DecoderPerfTest, ProgramDraw) { … }

}  // anonymous namespace
}  // namespace gpu
chromium/gpu/command_buffer/tests/decoder_perftest.cc
