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GUI: add option to disable VSync

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also add frame rate limiter
This commit is contained in:
tildearrow 2024-04-02 17:49:48 -05:00
parent 9dbda09cd0
commit fc68f17107
11 changed files with 145 additions and 75 deletions
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25
src/gui/gui.cpp
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@ -3769,6 +3769,10 @@ bool FurnaceGUI::loop() {
scrConfW=scrW;
scrConfH=scrH;
}
if (rend!=NULL) {
logV("restoring swap interval...");
rend->setSwapInterval(settings.vsync);
}
}
// update canvas size as well
if (!rend->getOutputSize(canvasW,canvasH)) {
@ -4037,7 +4041,7 @@ bool FurnaceGUI::loop() {
logD("starting render backend...");
while (++initAttempts<=5) {
if (rend->init(sdlWin)) {
if (rend->init(sdlWin,settings.vsync)) {
break;
}
SDL_Delay(1000);
@ -6534,6 +6538,22 @@ bool FurnaceGUI::loop() {
}
drawTimeEnd=SDL_GetPerformanceCounter();
swapTimeBegin=SDL_GetPerformanceCounter();
if (!settings.vsync || !rend->canVSync()) {
unsigned int presentDelay=SDL_GetPerformanceFrequency()/settings.frameRateLimit;
if ((nextPresentTime-swapTimeBegin)<presentDelay) {
#ifdef _WIN32
unsigned int mDivider=SDL_GetPerformanceFrequency()/1000;
Sleep((unsigned int)(nextPresentTime-swapTimeBegin)/mDivider);
#else
unsigned int mDivider=SDL_GetPerformanceFrequency()/1000000;
usleep((unsigned int)(nextPresentTime-swapTimeBegin)/mDivider);
#endif
nextPresentTime+=presentDelay;
} else {
nextPresentTime=swapTimeBegin+presentDelay;
}
}
rend->present();
if (settings.renderClearPos) {
rend->clear(uiColors[GUI_COLOR_BACKGROUND]);
@ -7036,7 +7056,7 @@ bool FurnaceGUI::init() {
}
logD("starting render backend...");
if (!rend->init(sdlWin)) {
if (!rend->init(sdlWin,settings.vsync)) {
logE("it failed...");
if (settings.renderBackend!="SDL") {
settings.renderBackend="SDL";
@ -7784,6 +7804,7 @@ FurnaceGUI::FurnaceGUI():
eventTimeBegin(0),
eventTimeEnd(0),
eventTimeDelta(0),
nextPresentTime(0),
perfMetricsLen(0),
chanToMove(-1),
sysToMove(-1),