Awesome
shadertoy-export
A small utility for exporting ShaderToy demos to large (print-ready) PNG images. On my MacBookPro, this can export up to 10,000x10,000 px images.
It only features a small set of shaders (those set to Public + API
) and doesn't support cube maps, video inputs, etc.
This tool is experimental and not complete. If you want to help maintain it, let me know.
Some examples:
A 2880x1800 wallpaper from this shader.
Install
Install the tool globally with npm.
npm install shadertoy-export -g
Command-Line Usage
More docs to follow.
Basic usage, writes the first frame to process.stdout as PNG.
shadertoy-export shader.frag [opts] > image.png
You can use --api
or -a
to grab from the ShaderToy API, which loads demos that are saved as Public + API
. For this, you need to specify a demo ID like XslGRr
, or a URL like https://www.shadertoy.com/view/XslGRr. Example:
shadertoy-export XslGRr --api > image.png
You can use --output
or -o
instead of writing to stdout, and --size
to render a different resolution. You can use --wait
to wait N milliseconds before rendering a frame.
shadertoy-export XslGRr --api --output output/1.png --size 1080,768 --wait 1500
interactive mode
You can also enter interactive (GUI) mode with the --frame
or -f
option. This opens a window which accepts mouse input, and you can hit Cmd + S
or Ctrl + S
at any point to save the image to your output path.
shadertoy-export -f --api --size=512,256 -o images/1.png XslGRr
You can also specify a --scale
or -S
option to reduce the interactive resolution (does not affect output). For example, --scale=0.5
will draw the scene at half resolution.
License
MIT, see LICENSE.md for details.