glslideshow - slideshow of images using smooth zooming and fades
] [-visual visual
[-window] [-root] [-duration seconds
] [-zoom percent
] [-fade seconds
] [-titles] [-letterbox | -clip] [-delay
] [-fps] [-debug] [-wireframe] [-cutoff int
Loads a random sequence of images and smoothly scans and zooms around in each,
fading from pan to pan.
This program requires a good video card capable of supporting large textures.
To specify the directory that images are loaded from, run
(1) and click on the "Advanced" tab.
- -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.
- -duration seconds
- How long each image will be displayed before loading a new
one. Default 30 seconds.
- -pan seconds
- How long each pan-and-zoom should last. Default 6 seconds.
With the default settings of -pan 6 -duration 30, each image will be
displayed five times (30/6), and then a new image will be loaded. If you
want a new image to be loaded at each fade, then set -pan and
-duration to the same value.
- -fade seconds
- How long each cross-fade between images should last.
Default 2 seconds. If set to 0, then no cross-fading will be done (all
transitions will be jump-cuts.)
Note that fades are included in the pan time, so -fade cannot be
larger than -pan.
- -zoom number
- Amount to zoom and pan as a percentage. Default: 75,
meaning that 75% or more of each image will always be visible. If set to
100%, then the images will always fill the screen, and no panning or
zooming will occur. (Images will still smoothly fade from one to another
if -fade is non-zero.)
- Whether to print the file name of the current image in the
upper left corner.
- In "letterbox" mode, when an image is not the
same aspect ratio as the screen, black bars will appear at the top/bottom
or left/right so that the whole image can be displayed. This is the
- In "clip" mode, when an image is not the same
aspect ratio as the screen, we will zoom in further until the image takes
up the whole screen. This is the opposite of -letterbox.
- -delay number
- Per-frame delay, in microseconds. Default: 20000 (0.02
- Display the current frame rate, CPU load, and polygon
- -cutoff number
- If the frame rate we are achieving is lower than this, then
panning, fading, and zooming will be disabled. Default 5 FPS.
The idea here is that if your machine can't maintain a decent frame rate,
then it must not have fast 3D hardware, so we might as well behave in a
simpler manner. Set this to 0 to disable this check.
- Prints debugging info to stderr.
- Another debug mode.
- 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.
Copyright © 2003-2005 by Jamie Zawinski, based on an earlier version that
was Copyright © 2002 by Mike Oliphant.
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.
Jamie Zawinski and Mike Oliphant.