How to enable EGLFS?

aveselinov — Mon, 14 Nov 2016 10:57:49 GMT

I have built an image using Yocto Project. Also built Qt SDK to be able to develop qt applications for my board.

The OS is console-only, so I want to use EGLFS plugin backend. What are the steps?

I'm testing a simple QtWidget application. But I get this output (with debug enabled) when I try to run it:

# ./helloworld
qt.qpa.egldeviceintegration: EGL device integration plugin keys: ("eglfs_viv")
qt.qpa.egldeviceintegration: EGL device integration plugin keys (sorted): ("eglfs_viv")
qt.qpa.egldeviceintegration: Trying to load device EGL integration "eglfs_viv"
qt.qpa.egldeviceintegration: Using EGL device integration "eglfs_viv"
QEglFSVivIntegration will set environment variable FB_MULTI_BUFFER=2 to enable double buffering and vsync.
If this is not desired, you can override this via: export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1
Could not open egl display
Aborted

Having exported:

QT_QPA_PLATFORM=eglfs
DISPLAY=:0.0

Re: How to enable EGLFS?

aveselinov — Mon, 21 Nov 2016 08:00:01 GMT

I fixed it. Could not open egl display | Qt Forum

It was missing the gpu driver.

Kinetis Software Development KitのトピックRe: How to enable EGLFS?

How to enable EGLFS?

Re: How to enable EGLFS?