8 ms·

The first look-up table effect that really impressed me was to use them for making a textured tunnel. You have a look-up table such that for each pixel on the

• taeric 3y ago
  If you view color palette as a lookup table, palette cycling was very common and feels very related.
  • dividuum 3y ago
    Color palette definitely counts. I remember the lookup table Quake used to map its 256 color VGA palette to itself to implement light levels: https://quakewiki.org/wiki/Quake_palette#Colormap https://quakewiki.org/wiki/Quake_palette#Colormap You now basically have a two step lookup: palette_rgb[colormap[color, light]]
  • indy 3y ago
    Mark J. Ferrari was incredible at utilising palette cycling: http://www.effectgames.com/demos/canvascycle/ http://www.effectgames.com/demos/canvascycle/
    • chongli 3y ago
      He gave one of my favourite GDC talks of all time [1]! I recommend this talk to anyone who is interested in the details and history of working on limited colour palette games! [1] https://youtu.be/aMcJ1Jvtef0 https://youtu.be/aMcJ1Jvtef0
      • indy 3y ago
        Love that video, his passion for the art form really comes through.
    • djmips 3y ago
      Writes nowadays. https://www.markferrari.com/writing https://www.markferrari.com/writing
    • Akronymus 3y ago
      Makes me think about the area 5150 demo https://www.youtube.com/watch?v=fWDxdoRTZPc https://www.youtube.com/watch?v=fWDxdoRTZPc edit: This comment really summarizes just how impressive the demo is https://old.reddit.com/r/Demoscene/comments/wjxqve/area_5150_ibm_pc_demo/ijm71m0/ https://old.reddit.com/r/Demoscene/comments/wjxqve/area_5150...
      • ku1ik 3y ago
        Witchcraft!
    • lloeki 3y ago
      And goes to the next level: http://www.effectgames.com/demos/worlds/ http://www.effectgames.com/demos/worlds/ (Make sure you're properly seated, then click Show Options »)
  • boomlinde 3y ago
    Yes, you could for example achieve the tunnel effect described above with a 16x16 or 32x8 texture using a 256-entry palette. Unreal by Future Crew has an effect that comes to mind that is probably implemented exactly like that (on VGA mode 0x13), just more of a wormhole than a tunnel: https://www.youtube.com/watch?v=InrGJ7C9B3s&t=4m40s https://www.youtube.com/watch?v=InrGJ7C9B3s&t=4m40s
  • JKCalhoun 3y ago
    I remember games that used 8-bit color palette cycling to do tear-free renders in an interesting way. They would draw the next frame of the game direct to the screen in either the high nybble (4 bits) or the low nybble (alternating each frame). The color palette was either one of two: one where the same color would be displayed regardless of the high nybble and the other palette had colors chosen where they were the same regardless of the bits in the low nybble. To be sure the game threw away 256 possible colors to have instead only 16. But when the next frame was being rendered, the user was never aware until, at the very last instant, the next palette was slammed in revealing the new frame (and of course the rendering began for the next).
• spookie 3y ago
  An advanced use of this principle is POM. You can even do self shadowing! https://web.engr.oregonstate.edu/~mjb/cs557/Projects/Papers/Parallax_Occlusion_Mapping.pdf https://web.engr.oregonstate.edu/~mjb/cs557/Projects/Papers/...
• nopakos 3y ago
  There is a little button "Code ▽" under the demo if you want to see how it's working!
• sylware 3y ago
  Looking at the symmetries of specific cases, you may find convenient solutions.