====== Startup parameters ======
[[http://doc.qt.io/qt-5/embedded-linux.html|Qt for Embedded Linux]]

==== from command line ====
<code bash>
./myqtapp -platform linuxfb -plugin evdevkeyboard:/dev/input/event0 -plugin evdevmouse:/dev/input/event1@
./myqtapp -platform eglfs
</code>

==== from env ====
<code bash>
export QT_QPA_EGLFS_PHYSICAL_WIDTH=105
export QT_QPA_EGLFS_PHYSICAL_HEIGHT=65

export QT_QPA_PLATFORM='linuxfb:fb=/dev/fb0'
export QT_QPA_PLATFORM='eglfs'

export QT_QPA_EGLFS_DISABLE_INPUT=1

export QT_QPA_GENERIC_PLUGINS='evdevmouse,evdevkeyboard,tslib:/dev/input/event1'
export QT_QPA_EVDEV_KEYBOARD_PARAMETERS="keymap=/home/pi/cz.qmap"
export QT_QPA_EVDEV_KEYBOARD_PARAMETERS="/dev/input/event0" 

export QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS="rotate=180" 
</code>

To use Qt Quick 2D renderer (only in commercial licenses)
http://doc.qt.io/QtQuick2DRenderer/index.html
<code bash>export QMLSCENE_DEVICE=softwarecontext</code>



==== debugging ====
<code bash>
export QT_LOGGING_RULES=qt.qpa.*=true
export QT_DEBUG_PLUGINS=1
export QT_QPA_EGLFS_DEBUG=1
</code>