---
name: "feedback"
section: "1"
platform: "linux"
package: "rss-glx"
version: "0.9.1-6.4~deb12u1"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/feedback"
---

# feedback(1)

Stirring colors with a jiggling warp.

## NAME

feedback - Stirring colors with a jiggling warp.

## SYNOPSIS

**feedback** \[--root/-r\] \[--maxfps/-x *number*\] \[--vsync/-y *number*\] \[--dpms/-M *number*\] \[--grey/-g\] \[--saturation/-S *number*\] \[--lightness/-L *number*\] \[--period/-p *number*\] \[--speed/-s *number*\] \[--cells/-c *number*\] \[--texsize/-t *number*\] \[--grid/-i\]

## DESCRIPTION

Colors are swirled by repeatedly mapping a spring loaded grid to a uniform grid, pulling in colors from the cycling perimeter.

Written by Tugrul Galatali.

## OPTIONS

- **--root**

  Draw on the root window.

- **--maxfps *number***

  Set maximum frame rate.

- **--vsync *number***

  Limit redraws to specified number of vertical refreshes.  0 - 100.  Default: 1

- **--dpms *number***

  Stop rendering new frames if the display is not on.  0 - 1.  Default: 1

- **--grey**

  Use greyscale instead of hue wheel.

- **--saturation *number***

  Set color saturation.  0 - 255.  Default: 255

- **--lightness *number***

  Set color lightness.  0 - 255.  Default: 255

- **--period *number***

  Sets color cycling period in seconds.  0 - 100.  Default: 5

- **--speed *number***

  Sets speed of warping grid wobble.  1 - 100.  Default: 10

- **--cells *number***

  Sets height and width of warping grid in powers of 2.  0 - 6.  Default: 3

- **--texsize *number***

  Sets height and width of warped texture in powers of 2.  6 - 12.  Default: 8

- **--grid**

  Turns on rendering of the warping grid.

## ENVIRONMENT

- **DISPLAY**

  to get the default host and display number.

## SEE ALSO

**X**(1),

## COPYRIGHT

Copyright © 2009 by Tugrul Galatali.

Feedback is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

Feedback is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

## AUTHOR

Tugrul Galatali \<tugrul@galatali.com\>