On Wed, 19 Feb 2025 09:20:45 +0100 "Enrico Weigelt, metux IT consult" <i...@metux.net> said:
> 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 why i mentioned going to swaps (i was implying you'd end up with kms etc.) but fbdev is a simple way to learn the basics of what a framebuffer is and how to possibly fill it with content. moving to a nice multi-buffer swapping mechanism is another stage in the learning... :) > I'd also recommend using some existing library for drawing (eg. cairo). i actually suspect that learning something about drawing/rendering and so on is part of the task... so as a college project ... it's better to DIY with some cpu compositing to learn it all.. :) what you do to learn and what you do to get a quick result will be different :) > > ------------- Codito, ergo sum - "I code, therefore I am" -------------- > > Indeed ;-) > > > --mtx > > -- > --- > Hinweis: unverschlüsselte E-Mails können leicht abgehört und manipuliert > werden ! Für eine vertrauliche Kommunikation senden Sie bitte ihren > GPG/PGP-Schlüssel zu. > --- > Enrico Weigelt, metux IT consult > Free software and Linux embedded engineering > i...@metux.net -- +49-151-27565287 > -- ------------- Codito, ergo sum - "I code, therefore I am" -------------- Carsten Haitzler - ras...@rasterman.com
