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properly adhere to fps limits

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This commit is contained in:
vaxerski 2023-04-21 15:23:10 +01:00
parent 997b9b8ec4
commit 87b765e618
3 changed files with 24 additions and 14 deletions
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28
src/WallpaperEngine/Application/CWallpaperApplication.cpp
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@ -334,7 +334,16 @@ namespace WallpaperEngine::Application
} else {
#endif
while (!videoDriver->closeRequested () && this->m_context.state.general.keepRunning) {
static float startTime, endTime, minimumTime = 1.0f / this->m_context.settings.render.maximumFPS;
// get the start time of the frame
startTime = videoDriver->getRenderTime ();
renderFrame();
// get the end time of the frame
endTime = videoDriver->getRenderTime ();
// ensure the frame time is correct to not overrun FPS
if ((endTime - startTime) < minimumTime)
usleep ((minimumTime - (endTime - startTime)) * CLOCKS_PER_SEC);
}
#ifdef ENABLE_WAYLAND
}
@ -349,8 +358,6 @@ namespace WallpaperEngine::Application
}
void CWallpaperApplication::renderFrame() {
static float startTime, endTime, minimumTime = 1.0f / this->m_context.settings.render.maximumFPS;
static time_t seconds;
static struct tm* timeinfo;
@ -359,24 +366,17 @@ namespace WallpaperEngine::Application
timeinfo = localtime(&seconds);
g_Daytime = ((timeinfo->tm_hour * 60) + timeinfo->tm_min) / (24.0 * 60.0);
// update audio recorder
audioDriver->update ();
// update input information
inputContext->update ();
// keep track of the previous frame's time
g_TimeLast = g_Time;
// calculate the current time value
g_Time = videoDriver->getRenderTime ();
// get the start time of the frame
startTime = g_Time;
// update audio recorder
audioDriver->update ();
// update input information
inputContext->update ();
// render the scene
context->render ();
// get the end time of the frame
endTime = videoDriver->getRenderTime ();
// ensure the frame time is correct to not overrun FPS
if ((endTime - startTime) < minimumTime)
usleep ((minimumTime - (endTime - startTime)) * CLOCKS_PER_SEC);
if (!this->m_context.settings.screenshot.take || videoDriver->getFrameCounter () != 5)
return;

9
src/WallpaperEngine/Render/Drivers/CWaylandOpenGLDriver.cpp
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@ -269,6 +269,13 @@ static void surfaceFrameCallback(void *data, struct wl_callback *cb, uint32_t ti
PLS->output->rendering = true;
PLS->output->driver->wallpaperApplication->renderFrame();
PLS->output->rendering = false;
float renderTime = PLS->output->driver->getRenderTime();
if ((renderTime - PLS->lastTime) < PLS->minimumTime)
usleep ((PLS->minimumTime - (renderTime - PLS->lastTime)) * CLOCKS_PER_SEC);
PLS->lastTime = renderTime;
}
const struct wl_callback_listener frameListener = {
@ -316,6 +323,8 @@ CLayerSurface::CLayerSurface(CWaylandOpenGLDriver* pDriver, SWaylandOutput* pOut
if (eglMakeCurrent(pDriver->eglContext.display, eglSurface, eglSurface, pDriver->eglContext.context) == EGL_FALSE)
sLog.exception("Failed to make egl current");
minimumTime = 1.0f / pDriver->wallpaperApplication->getContext().settings.render.maximumFPS;
}
CLayerSurface::~CLayerSurface() {

1
src/WallpaperEngine/Render/Drivers/CWaylandOpenGLDriver.h
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@ -56,6 +56,7 @@ namespace WallpaperEngine::Render::Drivers
wl_cursor* pointer = nullptr;
wl_surface* cursorSurface = nullptr;
bool callbackInitialized = false;
float lastTime, minimumTime;
};
class CWaylandOpenGLDriver : public CVideoDriver