bouncingcow — a happy cow on a trampoline in 3D. Moo.


bouncingcow [-display host:display.screen] [-visual visual] [-window] [-root] [-delay number] [-speed number] [-count number] [-texture filename] [-wireframe] [-fps]


It's very silly.


-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.
Draw on a newly-created window. This is the default.
Draw on the root window.
-delay number
Per-frame delay, in microseconds. Default: 30000 (0.03 seconds.).
-speed number
How fast the cow bounces. Larger for faster. Default: 1.0.
-count number
How many cows! Default 1.
-texture filename
An image file to paint on the cow's hide.

Note that on most systems, GL textures must have dimensions that are a power of two.

Render in wireframe instead of solid.
Display the current frame rate, CPU load, and polygon count.


to get the default host and display number.
to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.


Jamie Zawinski <>