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IMX6Q opengl es not smooth while dual display

Question asked by jie jia on Oct 7, 2018
Latest reply on Oct 11, 2018 by jie jia

There are two screen in our board. One is hdmi(1280x1024P-60 32bpp), another is lvds(1280x1024P-60 32bpp).  When we try to render to one of the screen, it's smooth(export FB_MULTI_BUFFER=2).   Now we need to render different graphics to two screen at the same time, but it's not smooth. 

We create two process, and use 'eglNativeDisplayType = fbGetDisplayByIndex(x);' to render  to /dev/fb0 and /dev/fb2.