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how to make multiple-buffer effect immediately

Question asked by jie jia on Jul 21, 2015
Latest reply on Jul 23, 2015 by Bio_TICFSL

bsp:linux3.0.35 cpu:imx6q. My lcd resolution is 800*600

To use multiple-buffer rendering, I set 'export FB_MULTI_BUFFER=2'.

 

And then I print the resolution of fb0:

xres = 800

yres = 600

var.xres_virtual = 800

var.yres_virtual = 600

 

I download the gpu_sdk_v1.00.gz, and execute the GLES example in the file.

And then I print the resolution of fb0:

xres = 800

yres = 600

var.xres_virtual = 800

var.yres_virtual = 1200

 

Why multiple-buffer no effect immediately after I set 'export FB_MULTI_BUFFER=2'?

 

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