diff options
| author | RSDuck <rsduck@users.noreply.github.com> | 2020-12-04 00:00:35 +0100 |
|---|---|---|
| committer | RSDuck <rsduck@users.noreply.github.com> | 2020-12-04 00:00:35 +0100 |
| commit | 42e083960e52cce31589714dcc7fab8e173efb81 (patch) | |
| tree | 834d30bec567362033462fb26ec8b0c9f1edf927 /src/frontend | |
| parent | 906521e7e9ab32f0502a680244db22f53f23b0b7 (diff) | |
always cap FPS to 1000
Diffstat (limited to 'src/frontend')
| -rw-r--r-- | src/frontend/qt_sdl/main.cpp | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/src/frontend/qt_sdl/main.cpp b/src/frontend/qt_sdl/main.cpp index 6fcd8ce..2d3749d 100644 --- a/src/frontend/qt_sdl/main.cpp +++ b/src/frontend/qt_sdl/main.cpp @@ -495,24 +495,24 @@ void EmuThread::run() double frametimeStep = nlines / (60.0 * 263.0); { + bool limitfps = Config::LimitFPS && !fastforward; + + double practicalFramelimit = limitfps ? frametimeStep : 1.0 / 1000.0; + double curtime = SDL_GetPerformanceCounter() * perfCountsSec; - bool limitfps = Config::LimitFPS && !fastforward; - if (limitfps) + frameLimitError += practicalFramelimit - (curtime - lastTime); + if (frameLimitError < -practicalFramelimit) + frameLimitError = -practicalFramelimit; + if (frameLimitError > practicalFramelimit) + frameLimitError = practicalFramelimit; + + if (round(frameLimitError * 1000.0) > 0.0) { - frameLimitError += frametimeStep - (curtime - lastTime); - if (frameLimitError < -frametimeStep) - frameLimitError = -frametimeStep; - if (frameLimitError > frametimeStep) - frameLimitError = frametimeStep; - - if (round(frameLimitError * 1000.0) > 0.0) - { - SDL_Delay(round(frameLimitError * 1000.0)); - double timeBeforeSleep = curtime; - curtime = SDL_GetPerformanceCounter() * perfCountsSec; - frameLimitError -= curtime - timeBeforeSleep; - } + SDL_Delay(round(frameLimitError * 1000.0)); + double timeBeforeSleep = curtime; + curtime = SDL_GetPerformanceCounter() * perfCountsSec; + frameLimitError -= curtime - timeBeforeSleep; } lastTime = curtime; |