NAME

       dizzy - a graphics demo that makes you dizzy using rotating textures

SYNOPSIS

       dizzy [-f|-w width -h height] [-t switch_module] [-T options]

DESCRIPTION

       dizzy is a graphics demo that rotates planes of patterns on a colored background to make
       you dizzy. Textures can be cross-faded and there is a mode that automatically changes
       textures, allowing Dizzy to be run as a screensaver.

OPTIONS

       -w width
       --width width
       -h height
       --height height
           Sets the window width and height.

       -f
       --fullscreen
           Attempts to switch into a true fullscreen mode, if possible. The window size
           parameters are ignored.

       -a
       --automode time
           Automatically switches textures after a specified number of seconds has passed.  time
           can be fractional and the decimal separator is always the period.

       -t module
       --texswitcher module
           Selects the texture switching module to use. Default is Simple.

           See below for available texture switchers and their descriptions.

       -T option=value
       --texswitcher-options option=value
           Passes an option option with the value value to the selected texture switcher. The
           available options depend on the texture switcher used.

           This option can be given multiple times to set multiple options.

       -d module
       --rotswitcher module
           Selects the rotator switching module to use. Default is Simple.

           See below for available texture switchers and their descriptions.

       -D option=value
       --rotswitcher-options option=value
           Passes an option option with the value value to the selected rotator switcher. The
           available options depend on the rotator switcher used.

           This option can be given multiple times to set multiple options.

       -r resolution
       --texture-resolution resolution
           Changes the texture resolution. resolution must be a power of two. The default value
           is 256.

       -R resolution
       --shader-resolution resolution
           Changes the resolution used when rendering using shaders. resolution must be a power
           of two. The default is 1024.

       -z zoom
       --zoom zoom
           Zooms the textures. The default value is 100.

       -c path
       --cache-paths path
           Use a different path for cached textures. This option can be specified multiple times.

       -C
       --disable-cache
           Don't use any texture cache at all.

       --debug-show-planes
           Zooms out of the normal view so you can see how Dizzy creates the animation. A white
           border will also be drawn around the area that would have been shown had this option
           not been used.

TEXTURE SWITCHERS

   Simple
       A simple texture switcher. It just sets the new texture when it is told to do so. It takes
       no options.

   Blend
       A texture switcher that crossfades between textures to generate a smooth transition. It
       takes one option:

       duration=duration
           Sets the duration of a blend to duration seconds. The value can be fractional (the
           decimal separator is always a period).  The default value is 2.

           Note that you have to add the time you specify here to the automode time, so if you
           want the transition to take two seconds and every image to stay for five seconds, you
           set the duration to 2 and automode to 7 (not 5).

ROTATOR SWITCHERS

   Simple
       A simple switcher that just activates the new rotator without any transition.

KEYBOARD COMMANDS

       Cursor left
           Select previous available texture.

       Cursor right
           Select next available texture.

       Cursor down
           Select previous available rotator function.

       Cursor up
           Select next available rotator function.

       Escape
       q   Exit Dizzy.