2020年5月22日 星期五

QT, raspberry pi 4, broadcom EGL implementation does not work

https://www.raspberrypi.org/forums/viewtopic.php?t=244984


Re: Anyone cross compiled QT for the Pi 4 yet.

The Broadcom EGL implementation does not work on Pi 4 due to it being a different GPU. This is why Qt's brcm-eglfs platform integration does not work. Try using the mkspec for eglfs-bgm, it might work with fake KMS mode that Pi 4 uses. There is already a mkspec for it:

https://code.qt.io/cgit/qt/qtbase.git/t ... qmake.conf

This might not work without the real KMS driver which unfortunately also does not work yet on Pi 4, again due to it using a different GPU.

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