[Apalis-IMX8] Launch Qt application in eglfs // Multi Gpu Buffer

Technical Support
, ,
1

Hi,

I’m currently working Qt app using eglfs and take advantage of having a fullscreen app in gpu buffer for our multimedia application.

However, it appears we’d need to launch another application in fullscreen…knowing that eglfs means no windowing system.
It looks like in IMX6 we can enable MULTI BUFFER GPU and starts a program this way:

#!/bin/sh
fb=/dev/fb$1
export QT_QPA_FONTDIR=/usr/share/fonts/
export QT_QPA_EGLFS_FORCEVSYNC=1
export QT_QPA_EGLFS_HIDECURSOR=1
export QT_QPA_EGLFS_FB=$fb
export FB_FRAMEBUFFER_0=$fb
export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1
export QT_QPA_PLATFORM=eglfs
/path/to/program

Is it something we coul achieve with the apalis imx8 ?
I’ve looked in the /dev/ directory and I only found:

/dev/fb -> fb0
/dev/fb0

Cheers,

Karim

2

Hello @karim ,

Thank you for writing to Community!

I am curious as to why you would have to launch another application on top of an already running application. Could you give us more context?

And have you already tried that on iMX8?

Best regards,
Janani