• XFree86 3D Status Report (the free X Server for linux)
• Mesa
• Simple Xlib programming example:
  • glxsimple is a tiny program for initializing and displaying an Xlib GL graphics window.

    Three Makefile's are provided, each configured for three different systems: SGI, CES (Sparc Ultra5), and Linux. Depending on where you want to compile the programs, rename the appropriate Makefile.<system> to Makefile.

  • Makefile.sgi (sgi machines)
  • Makefile.ces (ces machines)
  • Makefile.linux (linux machines)
  • glxsimple.c
  • You can get all of the above files in this tar file, glx-simple.tar.gz. When uncompressed and untarred it'll create a glx-simple directory.

• An online tutorial (I've no idea how informative/helpful this may be to you)
• Some useful C routines---these are just a few functions to read in *.glsl code really...these functions should compile as is, but I make no guarantees.
  • utils.c

The revolution in graphics programming is shading languages providing programmability over Graphics Processing Units (GPUs). Cg is one such high-level language.

• Simple Cg (GLUT) programming example:
  • runtime_ogl_vf_notexture is a demo of "Cg runtime" programming. The program (demo.cpp) creates a parameterized sphere and displays it in either wireframe, flat, smooth, or Phong shading. The first three use traditional OpenGL calls, the latter uses Cg.

    The Makefile provided is configured for Mac OS X (tested on 10.3.3) and Linux.

  • README
  • Makefile
  • demo.cpp
  • demo_vert.cg
  • demo_frag.cg
  • You can get all of the above files in this tar file, runtime_ogl_vf_notexture.tar.gz. When uncompressed and untarred it'll create a runtime_ogl_vf_notexture directory.

  • runtime_ogl_vf is a demo of "Cg runtime" programming. The program (demo.cpp) does what the above example does, except it also adds in a texture map.

    The Makefile provided is configured for Mac OS X (tested on 10.3.3) and Linux.

  • Makefile
  • demo.cpp
  • demo_vert.cg
  • demo_frag.cg
  • You can get all of the above files in this tar file, runtime_ogl_vf.tar.gz. When uncompressed and untarred it'll create a runtime_ogl_vf directory.

The GUI Toolkit, Framework Page
A web page containing a comparison of many toolkits. There are a lot of them out there, below are three of the best for interactive graphics programming.

GLUT
A simple, no-frills (no logo even! :) C GUI used to simplify learning graphics programming. It makes window creation fairly easy, but it lacks a lot of nice features such as buttons, file browsers, etc. If you're going to learn interactive graphics, you might as well also learn to use a more powerful GUI toolkit.

• Simple GLUT programming example:
  • checks is a tiny program for initializing and displaying a GLUT GL graphics window.

    Three Makefile's are provided, each configured for three different systems: SGI, CES (Sparc Ultra5), and Linux. Depending on where you want to compile the programs, rename the appropriate Makefile.<system> to Makefile.

  • Makefile.sgi (sgi machines)
  • Makefile.ces (ces machines)
  • Makefile.linux (linux machines)
  • checks.c
  • You can get all of the above files in this tar file, glut-simple.tar.gz. When uncompressed and untarred it'll create a glut-simple directory.

A powerful C GUI used to create The Gimp. It's somewhat hard to learn (lacking good manuals), but once you get comfortable with its syntax and methodology, you'll find it to be a very good toolkit.

• Gtk v1.2 Tutorial
• Gtk Reference Documentation Project
• GTK+ Application Repository
  • GtkGLArea (GTK+ Widget for OpenGL drawable area)
• Simple GTK programming example:
  • gtksimple and gtksimple2 are short little programs for initializing and displaying two painfully small GTK windows.

    gtkglsimple is a small program which opens up the same small window and a larger window for OpenGL drawing.

    Three Makefile's are provided, each configured for three different systems: SGI, CES (Sparc Ultra5), and Linux. Depending on where you want to compile the programs, rename the appropriate Makefile.<system> to Makefile.

  • Makefile.ces (ces machines)
  • Makefile.linux (linux machines)
  • gtksimple.c
  • gtksimple2.c
  • gtkglsimple.c
  • You can get all of the above files in this tar file, gtk-simple.tar.gz. When uncompressed and untarred it'll create a gtk-simple directory.
• Simple C++ GTK programming example with GLADE:
  • Here's a "skeleton" program in C++ which uses glade (and xml) to set up an initial window with a gtkglarea widget.

    Currently, the Makefile will only compile on SGIs.

  • Makefile.sgi (SGIs)
    (NOTE the various -LANG:... and other compiler options!)
  • Makefile.linux (Linux)
  • mgr.h
  • mgr.cxx
  • callbacks.h
  • callbacks.c
  • main.cxx
  • You can get all of the above files in this tar file, gtk-glade.tar.gz. When uncompressed and untarred it'll create a gtk-glade directory.
• Simple image viewing example:
  • ppmview is a short little utility for viewing PPM images. Try using it to view the pnm/mandrill.ppm image (shift-click to download).

    Usage: ppmview [FILE]...

    Three Makefile's are provided, each configured for three different systems: SGI, CES (Sparc Ultra5), and Linux. Depending on where you want to compile the programs, rename the appropriate Makefile.<system> to Makefile.

  • Makefile.linux (linux machines)
  • viewppm.c
  • You will need the libpnm library installed and compiled in the subdirectory pnm.
  • You can get all of the above files in this tar file, gtk-viewppm.tar.gz. When uncompressed and untarred it'll create a gtk-viewppm directory.

• Imlib 2

The gdk-pixbuf Library

An object-oriented C++ GUI used to create KDE. There's some documentation here.

• Qt texture example:
  • The texture app is a short little program that demonstrates an OpenGL widget and some sliders. The Makefile provided should work equally well on Mac OS X and Linux. Pay attention to how the code is organized, noting the need for a "top-level" Makefile. The top-level Makefile contains code which determines the system you're compiling on, sets up the appropriate Qt specifications, and then generates a Qt Makefile specific to the code being compiled (in subdirectory src/). The Qt-generated Makefile is in turn generated from directions specified by the programmer (that's you) in the src/texture.pro project file.
  • Makefile
  • texture.pro
  • main.cpp
  • globjwin.cpp
  • gltexobj.cpp
  • You can get all of the above files in this tar file, texture.tar.gz. When uncompressed and untarred it'll create a texture directory.
  • Note: you will need to add the following to your ~/.cshrc:

    setenv QTDIR /usr/lib/qt-3.3
    setenv PATH $QTDIR/bin:$PATH
    setenv DYLD_LIBRARY_PATH $QTDIR/lib
    setenv MANPATH /usr/local/man:/usr/share/catman:/usr/share/man
    setenv MANPATH /usr/X11R6/man:/sw/man:$MANPATH
    setenv MANPATH $QTDIR/doc/man:$MANPATH
    		

An easy C++ GUI based on the old Forms package. Includes a visual GUI creator program (fluid) which lets you set up buttons, windows, etc., and generate the skeleton callback C++ file. Using OpenGL is simplified by creating a special window subclass Fl_Gl_Window.

• On-line documentation