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https://github.com/gnif/LookingGlass.git
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[client] imgui: use signalNextFrame if possible
This allows imgui to be rendered at screen refresh rate for supported display server backends.
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@ -166,7 +166,9 @@ static int renderThread(void * unused)
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while(g_state.state != APP_STATE_SHUTDOWN)
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{
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if (g_params.fpsMin != 0)
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if (g_state.overlayMustWait)
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lgWaitEvent(g_state.overlayRenderEvent, TIMEOUT_INFINITE);
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else if (g_params.fpsMin != 0)
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{
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float ups = atomic_load_explicit(&g_state.ups, memory_order_relaxed);
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@ -179,6 +181,14 @@ static int renderThread(void * unused)
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}
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}
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if (g_state.overlayInput && g_state.ds->signalNextFrame)
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{
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g_state.ds->signalNextFrame(g_state.overlayRenderEvent);
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g_state.overlayMustWait = true;
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}
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else
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g_state.overlayMustWait = false;
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int resize = atomic_load(&g_state.lgrResize);
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if (resize)
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{
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@ -966,6 +976,12 @@ static int lg_run(void)
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return -1;
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}
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if (!(g_state.overlayRenderEvent = lgCreateEvent(true, 0)))
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{
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DEBUG_ERROR("failed to create the overlay render event");
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return -1;
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}
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lgInit();
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// start the renderThread so we don't just display junk
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@ -1145,6 +1161,12 @@ static void lg_shutdown(void)
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g_state.frameEvent = NULL;
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}
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if (g_state.overlayRenderEvent)
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{
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lgFreeEvent(g_state.overlayRenderEvent);
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g_state.overlayRenderEvent = NULL;
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}
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if (e_startup)
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{
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lgFreeEvent(e_startup);
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@ -55,6 +55,8 @@ struct AppState
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ImFont * fontLarge;
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bool overlayInput;
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ImGuiMouseCursor cursorLast;
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LGEvent * overlayRenderEvent;
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bool overlayMustWait;
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bool alertShow;
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char * alertMessage;
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