77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
// Copyright 2012 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <fstream>
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#include <iomanip>
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#include "Common/CommonTypes.h"
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#include "Common/FileUtil.h"
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#include "Common/Timer.h"
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#include "Core/Core.h"
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#include "VideoCommon/FPSCounter.h"
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#include "VideoCommon/VideoConfig.h"
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static constexpr u64 FPS_REFRESH_INTERVAL = 250000;
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FPSCounter::FPSCounter()
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{
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m_last_time = Common::Timer::GetTimeUs();
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m_on_state_changed_handle = Core::AddOnStateChangedCallback([this](Core::State state) {
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if (state == Core::State::Paused)
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SetPaused(true);
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else if (state == Core::State::Running)
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SetPaused(false);
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});
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}
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FPSCounter::~FPSCounter()
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{
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Core::RemoveOnStateChangedCallback(&m_on_state_changed_handle);
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}
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void FPSCounter::LogRenderTimeToFile(u64 val)
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{
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if (!m_bench_file.is_open())
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{
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File::OpenFStream(m_bench_file, File::GetUserPath(D_LOGS_IDX) + "render_time.txt",
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std::ios_base::out);
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}
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m_bench_file << std::fixed << std::setprecision(8) << (val / 1000.0) << std::endl;
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}
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void FPSCounter::Update()
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{
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const u64 time = Common::Timer::GetTimeUs();
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const u64 diff = time - m_last_time;
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m_time_diff_secs = static_cast<double>(diff / 1000000.0);
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if (g_ActiveConfig.bLogRenderTimeToFile)
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LogRenderTimeToFile(diff);
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m_frame_counter++;
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m_time_since_update += diff;
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m_last_time = time;
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if (m_time_since_update >= FPS_REFRESH_INTERVAL)
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{
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m_fps = m_frame_counter / (m_time_since_update / 1000000.0);
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m_frame_counter = 0;
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m_time_since_update = 0;
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}
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}
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void FPSCounter::SetPaused(bool paused)
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{
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if (paused)
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{
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m_last_time_pause = Common::Timer::GetTimeUs();
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}
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else
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{
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const u64 time = Common::Timer::GetTimeUs();
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const u64 diff = time - m_last_time_pause;
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m_last_time += diff;
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}
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}
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