Re: I wrote a little graphics thing

[Michael <macallan1888%gmail.com@localhost>]

Hello,

On Wed, 3 Jun 2026 10:35:16 -0400 (EDT)
Mouse <mouse%Rodents-Montreal.ORG@localhost> wrote:

> > Goals for this little project:
> > [...]
> > - eventually cover the 'X with a bunch of xterms' use case on
> >   hardware where regular Xorg is getting too fat  
> 
> Why not just use old X?  You'd get a lot of stuff for free.  The most
> I'd expect it'd need would be a ddx layer that talks to wscons, and
> that only on hardware not already supported by the X you use.  I dunno
> about Xorg, but MIT X makes it fairly easy to support dumb-memory
> framebuffers.  I've done multiple ddx layers for R6.4pl3.

As I said, I just wanted to play with dumb, low level graphics again
and see how far I get with what's already there.
Also, X is quite complicated - lots of annoying to implement drawing
primitives for starters. And everything must support clipping. Sure, I
wouldn't have to touch most of them but it's a lot of baggage to carry
around.

That being said, I updated the tarball:
- the terminal now supports underline and bold
- added a few more fonts to try out ( and make sure my drawing routines
  handle more than 8 pixels wide )
- use VIS image copy routines lifted from xf86-video-sunffb on sparc64
- fixed an out of bound memory access bug that bit when drawing a
  partially off-screen mouse cursor at the bottom of the screen ( it
  wasn't the drawing of the cursor but the deleting of the old image
  that wasn't clipped off properly )
- some more minor adjustments, mostly getting rid of assumptions about
  font sizes

The terminal plays a few tricks we can't easily get away with in the
kernel, so its likely faster than a plain genfb console on most
hardware.

have fun
Michael