---
name: "gflux"
section: "1"
platform: "linux"
package: "xscreensaver-gl"
version: "3.34-3"
release: "Debian 3.0 (Woody)"
platforms: ["linux"]
url: "https://new.carta.tech/gflux"
---

# gflux(1)

rippling surface graphics hack

## NAME

gflux - rippling surface graphics hack

## SYNOPSIS

**gflux** \[-display *host:display.screen*\] \[-window\] \[-root\] \[-install\] \[-visual *visual*\] \[-delay *microseconds*\] \[-fps\] \[-squares *num*\] \[-resolution *num*\] \[-draw *num*\] \[-flat *num*\] \[-speed *num*\] \[-rotationx *num*\] \[-rotationy *num*\] \[-rotationz *num*\] \[-waves *num*\] \[-waveChange *num*\] \[-waveHeight *num*\] \[-waveFreq *num*\] \[-zoom *num*\]

## DESCRIPTION

The *gflux* program draws a colourfull animated rippling square rotating in 3D space.

## OPTIONS

*gflux* accepts the following options:

- **-window**

  Draw on a newly-created window.  This is the default.

- **-root**

  Draw on the root window.

- **-install**

  Install a private colormap for the window.

- **-visual *visual***

  Specify which visual to use.  Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual.

- **-squares *num***

  Specifies the size of the grid in squares. default 19

- **-resolution *num***

  Specifies the wireframe detail of the squares. default 4

- **-draw *num***

  Specifies the draw method. 0 = wireframe, 1 = solid, 2 = light (default), 3 = checker texture mapped, 4 = PNM image is read from stdin and mapped to the surface

- **-flat *num***

  0 for smooth shading 1 for flat. default 0

- **-speed *num***

  Specifies speed of ripples flowing over the surface. default 0.05

- **-rotationx *num* -rotationy *num* -rotationz *num***

  Specifies the speed of rotation of the surface in these axis

- **-waves *num***

  Specifies the number of ripple centres at any one time.  Values should be greater than 1.  default 3

- **-waveChange *num***

  Specifies the duration of a ripple centre.  after this they fade away to be reborn elsewhere with a different frequency. default 50

- **-waveHeight *num***

  Specifies the height of ripples on the surface. default 1.0

- **-waveFreq *num***

  Specifies the maximum frequency of ripples. default 3.0

- **-zoom *num***

  Specifies the size of the viewport. Smaller values fill the screen with rippling surface. default 1.0

- **-delay *microseconds***

  How long to pause between frames.  Default is 20000, or 0.02 second.

- **-fps**

  Display a running tally of how many frames per second are being rendered. In conjunction with **-delay 0**, this can be a useful benchmark of  your GL performance.

## ENVIRONMENT

- **DISPLAY**

  to get the default host and display number.

- **XENVIRONMENT**

  to get the name of a resource file that overrides the global resources stored in the RESOURCE\_MANAGER property.

## BUGS

It's not unknown for this and other OpenGL hacks to fail under hardware accelaration (UtahGLX) and take the X server with them.  Texture images must be 16x16 or 32x32 or 64x64 etc.

## SEE ALSO

**X**(1), [**xscreensaver**(1)](/xscreensaver/1.md)

## COPYRIGHT

Copyright © 2000 by Josiah Pease.  Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation.  No representations are made about the suitability of this software for any purpose.  It is provided "as is" without express or implied warranty.

## AUTHOR

Josiah Pease \<gflux@jpease.force9.co.uk\>, 10-Jun-2000.