Hi, I have a strange issue with GtkGlArea under linux: it seems my program runs with a different fps than the monitor's refresh rate. (The rendering itself is fast, faster than 1ms.)
I use a 60Hz monitor mode, and the rendering fps is around 39.5Hz. I verified my monitor refresh rate with xrandr, and even with another -- X11-EGL based -- program; it is really 60Hz. I also measured the time interval between two render calls, and the min and max is around 22ms and 28ms, so it seems that I even do not drop a frame. I do not set anything special in GtkGlArea or opengl (glSwapInterval or so)... Did you encounter with such an issue? Any idea what can be the problem? Ubuntu 16.04, unity, gtk+ 3.18.9 Thanks, Ferenc
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