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implement 3 configurable and toggleable framerate targets (#2159)

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This pr allows for configuring the framerate target and adds support for two other framerate targets, a "fastforward" and "slowmo" target which can be enabled via either a toggle or holding a button.
this allows for supporting a more accurate framerate target and allows for users to slow down the speed of gameplay if they so desire
This commit is contained in:
Jakly
2024-09-29 03:30:13 -04:00
committed by GitHub
parent 2eb6d44c2c
commit e9446fa9dc
11 changed files with 394 additions and 55 deletions
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43
src/frontend/qt_sdl/EmuThread.cpp
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@ -149,12 +149,17 @@ void EmuThread::run()
char melontitle[100];
bool fastforward = false;
bool slowmo = false;
emuInstance->fastForwardToggled = false;
emuInstance->slowmoToggled = false;
while (emuStatus != emuStatus_Exit)
{
MPInterface::Get().Process();
emuInstance->inputProcess();
if (emuInstance->hotkeyPressed(HK_FastForwardToggle)) emit windowLimitFPSChange();
if (emuInstance->hotkeyPressed(HK_FrameLimitToggle)) emit windowLimitFPSChange();
if (emuInstance->hotkeyPressed(HK_Pause)) emuTogglePause();
if (emuInstance->hotkeyPressed(HK_Reset)) emuReset();
@ -332,22 +337,34 @@ void EmuThread::run()
emit windowUpdate();
winUpdateCount = 0;
}
if (emuInstance->hotkeyPressed(HK_FastForwardToggle)) emuInstance->fastForwardToggled = !emuInstance->fastForwardToggled;
if (emuInstance->hotkeyPressed(HK_SlowMoToggle)) emuInstance->slowmoToggled = !emuInstance->slowmoToggled;
bool fastforward = emuInstance->hotkeyDown(HK_FastForward);
bool enablefastforward = emuInstance->hotkeyDown(HK_FastForward) | emuInstance->fastForwardToggled;
bool enableslowmo = emuInstance->hotkeyDown(HK_SlowMo) | emuInstance->slowmoToggled;
if (useOpenGL)
{
// when using OpenGL: when toggling fast-forward, change the vsync interval
if (emuInstance->hotkeyPressed(HK_FastForward))
// when using OpenGL: when toggling fast-forward or slowmo, change the vsync interval
if ((enablefastforward || enableslowmo) && !(fastforward || slowmo))
{
emuInstance->setVSyncGL(false);
}
else if (emuInstance->hotkeyReleased(HK_FastForward))
else if (!(enablefastforward || enableslowmo) && (fastforward || slowmo))
{
emuInstance->setVSyncGL(true);
}
}
fastforward = enablefastforward;
slowmo = enableslowmo;
if (slowmo) emuInstance->curFPS = emuInstance->slowmoFPS;
else if (fastforward) emuInstance->curFPS = emuInstance->fastForwardFPS;
else if (!emuInstance->doLimitFPS) emuInstance->curFPS = 1.0 / 1000.0;
else emuInstance->curFPS = emuInstance->targetFPS;
if (emuInstance->audioDSiVolumeSync && emuInstance->nds->ConsoleType == 1)
{
DSi* dsi = static_cast<DSi*>(emuInstance->nds);
@ -361,23 +378,19 @@ void EmuThread::run()
emuInstance->audioVolume = volumeLevel * (256.0 / 31.0);
}
if (emuInstance->doAudioSync && !fastforward)
if (emuInstance->doAudioSync && !(fastforward || slowmo))
emuInstance->audioSync();
double frametimeStep = nlines / (60.0 * 263.0);
{
bool limitfps = emuInstance->doLimitFPS && !fastforward;
double practicalFramelimit = limitfps ? frametimeStep : 1.0 / emuInstance->maxFPS;
double curtime = SDL_GetPerformanceCounter() * perfCountsSec;
frameLimitError += practicalFramelimit - (curtime - lastTime);
if (frameLimitError < -practicalFramelimit)
frameLimitError = -practicalFramelimit;
if (frameLimitError > practicalFramelimit)
frameLimitError = practicalFramelimit;
frameLimitError += emuInstance->curFPS - (curtime - lastTime);
if (frameLimitError < -emuInstance->curFPS)
frameLimitError = -emuInstance->curFPS;
if (frameLimitError > emuInstance->curFPS)
frameLimitError = emuInstance->curFPS;
if (round(frameLimitError * 1000.0) > 0.0)
{