@cinap_lenrek@hj.9fs.net avatar

cinap_lenrek

@cinap_lenrek@hj.9fs.net

was?

This profile is from a federated server and may be incomplete. For a complete list of posts, browse on the original instance.

cinap_lenrek , to random
@cinap_lenrek@hj.9fs.net avatar

long music

cinap_lenrek , to random
@cinap_lenrek@hj.9fs.net avatar

spooky

cinap_lenrek , to random
@cinap_lenrek@hj.9fs.net avatar

mukke

icoon , to random
@icoon@mastodon.sdf.org avatar

Qiuck question: usually the tiltscreen option is set in the plan9.ini in the 9fat partition. On the raspberry pi editing plan9.ini seems to have no effect, actually it appears to be generated at startup. Where can I set the tiltscreen option then?

cinap_lenrek ,
@cinap_lenrek@hj.9fs.net avatar

no. screen tilting is implemented only by devvga, which the pi kernel lacks.

CC: @mcz @bubstance

cinap_lenrek ,
@cinap_lenrek@hj.9fs.net avatar

actually, implementing it is not too hard.

take a look at pc/screen.c.

essentially, tilting works by having gscreen being a shadow framebuffer (softscreen)
with the rotated/tilted dimension.

and flushmemscreen() copies changed rectangle from gscreen in tilted
coordinates into the real framebuffer.

one also needs to tilt also the mouse coordinates and the mouse cursor bitmap
in cursoron().

the tilting codes are as follows:

0 = none,
1 = left,
2 = inverted,
3 = right,

note that negating a tilt code yields the inverse operation so when you apply -tilt code
to tiltpt()/tiltrect() on transformed coordinates to get the original back.

-0 & 3 = 0 none
-1 & 3 = 3 right
-2 & 3 = 2 inverted
-3 & 3 = 1 left

CC: @icoon @mcz @bubstance

  • All
  • Subscribed
  • Moderated
  • Favorites
  • •
  • random
  • test
  • worldmews
  • mews
  • All magazines
    •