Avoid tearing in graphics display

Cross-platform BBS (ANSI) Terminal

Brought to you by: deuce

#143 Avoid tearing in graphics display

Milestone: NextMajor

Status: open

Owner: Stephen James Hurd

Labels: graphics (2)

Priority: 5

Updated: 2 hours ago

Created: 1 day ago

Creator: Rob Swindell

Private: No

I see this both in JXL and Sixel output, but interestingly, it's seems door (e.g. side-scroller) and possibly host or OS dependant (e.g. see it much more on doors running on cvs.synchro.net/Linux than vert.synchro.net/Windows) though my local capture of the transmitted door frames never contain the tearing. Note: SyncRetro (through which the NES roms currently play) only support Sixel, I had just experimented with JXL output to see if the tearing still occurred, and it did.

Super Mario Bros seems to be best example of this, particularly in the lower brick walk way.

3 Attachments

vlcsnap-2026-07-26-23h32m19s783.png

vlcsnap-2026-07-26-23h38m29s044.png

vlcsnap-2026-07-27-18h38m18s783.png

Discussion

Rob Swindell - 1 day ago

summary: Tearing in graphial display --> Tearing in graphics display
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Anonymous
  
  Add attachments
  Cancel
  You seem to have CSS turned off. Please don't fill out this field.
  
  You seem to have CSS turned off. Please don't fill out this field.

Stephen James Hurd - 15 hours ago

Sixel tearing isn't really a surprise, but JXL is.

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Anonymous
  
  Add attachments
  Cancel
  You seem to have CSS turned off. Please don't fill out this field.
  
  You seem to have CSS turned off. Please don't fill out this field.

Stephen James Hurd - 15 hours ago

It looks like GDI has no mechanism to avoid tearing.

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Anonymous
  
  Add attachments
  Cancel
  You seem to have CSS turned off. Please don't fill out this field.
  
  You seem to have CSS turned off. Please don't fill out this field.

Rob Swindell - 6 hours ago

Attachments has changed:

Diff:

--- old +++ new @@ -1,2 +1,3 @@ vlcsnap-2026-07-26-23h32m19s783.png (196.2 kB; image/png) vlcsnap-2026-07-26-23h38m29s044.png (192.2 kB; image/png) +vlcsnap-2026-07-27-18h38m18s783.png (106.4 kB; image/png)
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Anonymous
  
  Add attachments
  Cancel
  You seem to have CSS turned off. Please don't fill out this field.
  
  You seem to have CSS turned off. Please don't fill out this field.

Rob Swindell - 6 hours ago

In Wayland mode too

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Anonymous
  
  Add attachments
  Cancel
  You seem to have CSS turned off. Please don't fill out this field.
  
  You seem to have CSS turned off. Please don't fill out this field.

Rob Swindell - 6 hours ago

in X11 mode too

vlcsnap-2026-07-27-18h44m41s860.png

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Anonymous
  
  Add attachments
  Cancel
  You seem to have CSS turned off. Please don't fill out this field.
  
  You seem to have CSS turned off. Please don't fill out this field.

Stephen James Hurd - 2 hours ago

Ticket moved from /p/syncterm/tickets/274/

Can't be converted:

_output_type: Win32-GDI

_found_in_version: 1.10a
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Anonymous
  
  Add attachments
  Cancel
  You seem to have CSS turned off. Please don't fill out this field.
  
  You seem to have CSS turned off. Please don't fill out this field.

Stephen James Hurd - 2 hours ago

summary: Tearing in graphics display --> Avoid tearing in graphics display

Priority: --> 5

Milestone: 1.10 --> NextMajor
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Anonymous
  
  Add attachments
  Cancel
  You seem to have CSS turned off. Please don't fill out this field.
  
  You seem to have CSS turned off. Please don't fill out this field.

Stephen James Hurd - 2 hours ago

Interestingly, Wayland doesn't support tearing.

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Anonymous
  
  Add attachments
  Cancel
  You seem to have CSS turned off. Please don't fill out this field.
  
  You seem to have CSS turned off. Please don't fill out this field.

Anonymous