_  _    __    ___  __    ___  _____  _  _
 ( \( )  /__\  / __)(  )  / __)(  _  )( \( )
  )  (  /(__)\( (__  )(__( (__  )(_)(  )  (
 (_)\_)(__)(__)\___)(____)\___)(_____)(_)\_)

The History of Hacking  ·  May 31 – June 2, 2026  ·  Carolina Beach, NC

Connect from your terminal: telnet naclconbbs.net 23  |  ssh naclconbbs.net -p 2222

  1. Forum
  2. DOVE-Net
  3. Synchronet Programming

  • src/doors/syncscumm/test/test_sixel_palette_used.csrc/doors/termgfx/RE

    From Rob Swindell (on Debian Linux)@VERT to Git commit to main/sbbs/master on Wed Jul 22 16:22:51 2026
    https://gitlab.synchro.net/main/sbbs/-/commit/6512285c1be7fcf8528fecb2
    Added Files:
    src/doors/syncscumm/test/test_sixel_palette_used.c
    Modified Files:
    src/doors/termgfx/README.md sixel.c sixel.h
    Log Message:
    termgfx sixel: add SIXEL_PAL_USED to emit only referenced registers

    Replace sixel_encode()'s boolean emit_palette with a tri-state: SIXEL_PAL_NONE/FULL (the legacy 0/1, byte-identical output) and a new SIXEL_PAL_USED that (re)defines only the color registers an image
    actually references, at their original index. Register-resetting
    terminals (xterm/foot/Windows Terminal) must carry a palette on every
    image, and all 256 is mostly wasted bytes; USED cuts a typical dirty
    box from ~3.8KB of palette to a few hundred bytes with no wrong-color
    risk, since every referenced index is in the emitted set by
    construction. Persistent terminals keep FULL/NONE so a palette-less
    box can still rely on a prior frame's registers.

    Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

    ---
    þ Synchronet þ Vertrauen þ Home of Synchronet þ [vert/cvs/bbs].synchro.net