Qt EGLFS dithering for 18-bit color display
-
Hi,
we have an i.MX8M Plus board for which we prepared a Boot to Qt based OS with Qt 5.15.
The board has a 18-bit color LVDS display. As the color depth of the display is limited to just 6 bits per color, we'd like to enable dithering, otherwise color gradients will show color banding (https://en.wikipedia.org/wiki/Colour_banding).
For an understanding of what I'm trying to achieve please have a look at:
https://community.nxp.com/t5/i-MX-Processors/imx6-android-dithering-24bit-graphics-on-18bit-panel/m-p/477590/highlight/true#M75826I've tried to adjust the values in
/etc/default/qt
according to:
https://doc.qt.io/qt-5/embedded-linux.html#eglfs
In particular I've changed the values ofQT_QPA_EGLFS_DEPTH
andQT_QPA_EGLFS_FORCE888
, but no combination seemed to enable dithering.Is there any Qt EGLFS or Boot to Qt setting that allows to enable and configure dithering?
Thanks in advance
Diego -
Hi,
Boot2Qt being a commercial product, I would recommend to contact the Qt Company directly for support.