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- Source for "OpenGL & X", X Journal Articles
-
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-
- This directory contains source code from a three-part series of articles
- published in The X Journal about programming OpenGL and X. Included in
- each article is a complete program that is also reproduced here in
- compilable form. This source can be found in the
- sgigate.sgi.com:~ftp/pub/opengl/xjournal subtree.
-
- The documents linked into this page hail from the documents/OpenGL directory
- -- if you wish to download more than one of the PostScript files at the same
- time, you'll need to go to that directory to "make it so". The Makefile for
- the following programs indicates what libraries are needed for each.
-
- * OpenGL(tm) and X, Part 1: An Introduction, Mark Kilgard, The X Journal,
- November/December, 1993.
- o compressed PostScript format
- o uncompressed PostScript
- o html
-
- The OpenGL graphics system is a high-performance, window system
- independent 2D and 3D graphics interface. The technology was developed
- by Silicon Graphics and is now controlled by the OpenGL Architecture
- Review Board. OpenGL's GLX extension integrates OpenGL with the X
- Window System. This article describes OpenGL's functionality and how it
- is used with X. A simple OpenGL program using Xlib is presented. OpenGL
- is compared and contrasted with PEX, a 3D graphics interface designed
- specifically for X. The two subsequent articles in this series describe
- how to integrate OpenGL with Xlib and Motif programs.
-
- glxsimple.c A very simple OpenGL program rendering a cube which
- can be rotated using buttons presses. The program
- demonstrates creating a window for use with OpenGL,
- hidden surface removal, and double buffering. This
- program is presented in the first article in the
- November/December issue.
-
-
- * OpenGL(tm) and X, Part 2: Using OpenGL with Xlib, Mark Kilgard, The X
- Journal, January/February, 1994.
- o compressed PostScript format
- o uncompressed PostScript
- o html
-
- This is the second article in a three-part series about using the
- OpenGL(tm) graphics system and the X Window System. A moderately
- complex OpenGL program for X is presented. Depth Buffering, back-face
- culling, lighting, display list modeling, polygon tessellation, double
- buffering, and shading are all demonstrated. The program adheres to
- proper X conventions for colormap sharing, window manager
- communication, command line argument processing, and event processing.
- After the example, advanced X and OpenGL issues are discussed including
- minimizing colormap flashing, handling overlays, using fonts, and
- performing animation. The last article in this series discussess
- integrating OpenGL with the Motif toolkit.
-
- glxdino.c A moderately complex OpenGL program that renders a 3D
- dinosaur which can be rotated with mouse input. The
- program demonstrates colormap sharing, proper set up
- of X window manager properties, maintaining window
- aspect ratios, back-face culling, double buffering,
- display list modeling, polygon tesselation, hidden
- surface removal, shading, lighting, and X event
- processing. This program is presented in the second
- article in the January/February issue.
-
- * OpenGL(tm) and X, Part 3: Integrating OpenGL with Motif, Mark Kilgard,
- he X Journal, July/August, 1994.
- o compressed PostScript format
- o uncompressed PostScript
- o html
-
- The OpenGL(tm) graphics system can be integrated with the
- industry-standard OSF/Motif user interface. This article discusses how
- to use OpenGL within a Motif application program. There are two
- approaches to using OpenGL with Motif. One is to render into a standard
- Motif drawing area widget, but this requires each application window to
- use a single visual for its window hierarchy. A better approach is to
- use the special OpenGL drawing area widget allowing windows used for
- OpenGL rendering to pick freely an appropriate visual without affecting
- the visual choice for other widgets. An example program demonstrates
- both approaches. The X Toolkit's work procedure mechanism animates the
- example's 3D paper airplanes. Handling OpenGL errors is also explained.
-
- paperplane.c A toy Motif program which draws 3D paperplanes
- flying in figure-eights on a sky background. The
- program demonstrates both how to use the OpenGL-
- specific Motif widget and how to use the standard
- Motif drawing area widget. Motif pull down menus to
- implement the GUI controls for the program. Work
- procs handle the animal. This program is presented in
- the third article in the July/August issue.
-
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-
- glxmotif.c A program demonstrating how to use OpenGL with Motif
- (not using a special OpenGL widget). Work procs are
- used for animation. Press "s" to stop and start
- spinning the polygons; the arrow keys rotate the scene
- manually. This program is presented in the third
- article in the March/April issue. This program does
- not appear in any of the three articles, but appeared
- on the last Toolbox and appears here for completeness.
-
-
-
- These programs will operate on an IRIS 4D machine running IRIX 5.1 or later.
-
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- Copyright ⌐ 1995, Silicon Graphics, Inc.
-