search

MrKepzie / Natron

Open-source compositing software. Node-graph based. Similar in functionalities to Adobe After Effects and Nuke by The Foundry.
www.natron.fr
GNU General Public License v2.0
1.49k stars 163 forks source link

Custom dither patterns #1712

Closed hellocatfood closed 6 years ago

hellocatfood commented 6 years ago

Does Natron have any way to use custom dither patterns in the Quantize node? Currently the node has various Ordered Dither options, and I'd like to specify my own pattern.

For illustration please see the below examples:

Imagemagick has an overview of how to create your own dither patterns http://www.imagemagick.org/Usage/quantize/#od_posterize

GIMP has/had a plugin that can allow you to pick an image have it be a dither pattern http://gimpchat.com/viewtopic.php?f=11&t=1409&start=10#p17160

Imagemagick also lets you use symbol patterns/frames from a gif as the pattern http://www.imagemagick.org/Usage/quantize/#diy_symbols

It would be great if we could have more control over dithering in Natron.

devernay commented 6 years ago

You should use either ShaderToy, SeExpr, or GMICExpr for such a function. There are many shadertoy dithering examples on the web.

devernay commented 6 years ago

won't fix. Someone has to contribute this, for example using shadertoy or seexpr.