Mouse drawing directly to fb0

[Enrico Weigelt, metux IT consult]

On 18.02.25 08:12, Carsten Haitzler wrote:

> Advice - don't try and just bolt on a mouse with a hack. reality is to do a
> mouse, you're doing sprites/overlays and/or compositing (to do it right) so
> instead of bolting it on with a hack, bite the bullet and work out how to do
> some proper compositing of images (sprites) off-screen with also retained
> off-screen content of the screen then transfer any changes on to the screen when
> done.

Actually, raw fbdev isn't the right choice for such things - unless one
really hasn't any other choice.

DRM has support for such things, easy to use via libdrm:
https://github.com/metux/twtk/blob/master/src/platform/drm.c

I'd also recommend using some existing library for drawing (eg. cairo).


> ------------- Codito, ergo sum - "I code, therefore I am" --------------

Indeed ;-)


--mtx

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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info at metux.net -- +49-151-27565287