Bandither - Retro Shader for GZDoom, FTEQW, Doom 64, ReShade

[Immorpher]

Bandither is a non-linear color banding and dithering shader for GZDoom, FTEQW, Doom 64, and ReShade. It quantizes each color channel similar to 3D graphics hardware of the 1990's (Sega Saturn, Playstation 1, Nintendo 64, Voodoo 1/2) and can be skewed for darker games. It has multiple dithering modes, which can be blended, and are adjustable from pure color bands to full dithering. The amount of colors and linearity of the banding can be adjusted too.

Download Here: https://github.com/Immorpher/Bandither/releases/

Screenshots:

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All screenshots were taken at half resolution (to show off the dither better), with 8 color levels per channel (512 total colors), and a banding curve of 5 (which has more darker color levels). Color levels can be reduced to 2 per channel or increased much higher.

GZDoom Screenshots from Doom 64 CE: https://www.moddb.com/mods/doom-ce/downloads
FTEQW Screenshots from SMEJ Quake episodes: https://quakeworld.fi/smej/

For screen shots refer to the twitter post: https://twitter.com/immorpher64/status/1520537010229944320

Videos:

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It is hard to see the dither effects through the YouTube video compression. But you can catch glimpses of it in HD resolution.

GZDoom Videos from Doom 64 CE Rumble Pak: https://www.moddb.com/mods/doom-ce/addons/rumble-pak-a-selection-of-community-made-maps
FTEQW Videos from SMEJ2 Quake episode: https://quakeworld.fi/smej/epapuhtauksien-virta/

Color Levels: 8, Banding Curve: 5, Dither Type: Scanline, Dither Amount: 0.5
https://youtu.be/6ujS4py7pDw

Color Levels: 8, Banding Curve: 5, Dither Type: Motion Noise, Dither Amount: 0.5
https://youtu.be/7ZElNXh4laI

Color Levels: 8, Banding Curve: 5, Dither Type: Bayer 8x8, Dither Amount: 0.5
https://youtu.be/-wo27fVaBcE

Color Levels: 8, Banding Curve: 5, Dither Type: Scanline, Dither Amount: 1
https://youtu.be/teG4uWo2Q10

Credits and Links

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Color banding learned from code by SolarLune on this topic: https://blenderartists.org/t/reducing-the-number-of-colors-color-depth/571154
Bayer dithering learned from code by hughsk: https://github.com/hughsk/glsl-dither
Noise dithering learned from this code: https://stackoverflow.com/questions/12964279/whats-the-origin-of-this-glsl-rand-one-liner
GZDoom implementation based on code from Molecicco, FTEQW implementation based on code from JaycieErysdren, and KEX engine implementation based on code from Kaiser.

Twitter: https://twitter.com/immorpher64
YouTube: https://www.youtube.com/c/Immorpher

[Immorpher]

Woops, I was a doof, and I think I posted this in the wrong section. If a mod is around and its not too hard, can this be moved to here: viewforum.php?f=103 ?

And I have updated it to version 1.2 which improves some of the dithering and adds a few extra dither types too! See comparisons here https://twitter.com/immorpher64/status/ ... 1604486144

[wildweasel]

Woops, I was a doof, and I think I posted this in the wrong section. If a mod is around and its not too hard, can this be moved to here: viewforum.php?f=103 ?

Done!

[Immorpher]

Thank you so much! It's greatly appreciated. And if anyone has a dither style they would like me to add, feel free to suggest.

[Nash]

Looks cool, judging from the screens. Will be giving this a try in my games, for sure. Thanks for putting this out!

[Immorpher]

Looks cool, judging from the screens. Will be giving this a try in my games, for sure. Thanks for putting this out!

It's an honor to get such kind words from someone whose programming I have learned so much from! Also thanks for answering our questions on the In The Keep podcast!

[LeCreeperMax]

Looks good

[Immorpher]

Looks good

I been having too much fun with it! And perhaps jumping the shark with this one, but the latest Bandither update lets you blend dither styles. This is to quench my obsession to add a bit of noise to dithers. But also I found you could get some funky results by blending two unrelated style. The motion noise now varies with time too, so you can add some time-varying noise to any dither. To make up for jumping the shark, I did clean some of the code! https://github.com/Immorpher/Bandither/releases/

[Immorpher]

Bandither has been updated to 1.4! This does not add any more new features, rather better support for more software.

- ReShade support has been added, thus allowing it to be used for a lot more software. I had to convert the coding from GLSL to HLSL, thus I can leverage this for more application support in the future perhaps.
- Doom 64 Remaster (KEX engine) support has been added too! I recommend implementing it via ReShade as it takes a bit of extra effort to adjust its settings within the Doom 64 Remaster. It only compiles under OpenGL as well, but this is a proof of concept that future mods could use custom shaders in the KEX engine!
- FTEQW now has better support with console variable options and its nicely bundled as a pk3 now.