Initializations:

The following procedures are typically invoked once in the main program, before the graphics processing begins.

glutInit(int *argcp, char **argv):

Initialize GLUT and OpenGL. Pass in command-line arguments.

glutInitDisplayMode(unsigned int mode):

Set GLUT's display mode. The mode is the logical-or "|" of one or more of the following:

Select one of the following three:

• GLUT_RGB: use RGB colors.
• GLUT_RGBA: use RGBA colors.
• GLUT_INDEX: use color-mapped colors (not recommended).

Select one of the following two:

• GLUT_SINGLE: use single-buffering.
• GLUT_DOUBLE: allow double-buffering (for smooth animation).

Select the following for hidden surface removal:

• GLUT_DEPTH: allow depth-buffering.

There are a number of other options, which we have omitted. This last option make depth-buffering possible. It is also necessary to enable the operation (see glEnable() below).

glutInitWindowSize(int width, int height):

Set the initial window size. Also see: glutInitWindowPosition().

glutCreateWindow(char *title):

Create window with the given title (argv[0] sets the name to the program's name).

glutMainLoop(void):

This starts the main event loop. Control returns only through one of the callback functions given below.

Please report any errors or send comments to Dave Mount

Last updated: Sat, Feb 8, 2003.