forked from dolphin-emu/dolphin
8cefcaa94c
Very useful to compare performance between two builds, check the impact of a configuration option, etc. FPS log is stored in User/Logs/fps.txt and is reset each time you launch a game. Only enabled if you check the "Log FPS to file" option in your graphics settings. Could be improved a bit: currently logs only every 1s (so you can't really see small variations), maybe output more infos to the fps.txt like average/stddev (but Excel/Libreoffice/Google Docs can compute that easily too).
64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include "FPSCounter.h"
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#include "FileUtil.h"
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#include "Timer.h"
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#include "VideoConfig.h"
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#define FPS_REFRESH_INTERVAL 1000
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static unsigned int s_counter = 0;
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static unsigned int s_fps = 0;
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static unsigned int s_fps_last_counter = 0;
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static unsigned long s_last_update_time = 0;
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static File::IOFile s_bench_file;
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void InitFPSCounter()
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{
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s_counter = s_fps_last_counter = 0;
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s_fps = 0;
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s_last_update_time = Common::Timer::GetTimeMs();
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if (s_bench_file.IsOpen())
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s_bench_file.Close();
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}
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static void LogFPSToFile(unsigned long val)
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{
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if (!s_bench_file.IsOpen())
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s_bench_file.Open(File::GetUserPath(D_LOGS_IDX) + "fps.txt", "w");
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char buffer[256];
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snprintf(buffer, 256, "%ld\n", val);
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s_bench_file.WriteArray(buffer, strlen(buffer));
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}
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int UpdateFPSCounter()
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{
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if (Common::Timer::GetTimeMs() - s_last_update_time >= FPS_REFRESH_INTERVAL)
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{
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s_last_update_time = Common::Timer::GetTimeMs();
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s_fps = s_counter - s_fps_last_counter;
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s_fps_last_counter = s_counter;
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if (g_ActiveConfig.bLogFPSToFile)
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LogFPSToFile(s_fps);
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}
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s_counter++;
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return s_fps;
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} |