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# NAME

MesaDrawingArea - An Xt widget for Mesa/X with richer semantics

# DESCRIPTION

The MesaDrawingArea widget is an extension of the GLwDrawingArea widget which takes advantage of some features of the Mesa/X implementation of the OpenGL API.

It also simplifies programming by associating a drawing context transparently to the widget. This feature is particulary convenient in applications that have to deal with multiple instances of a MesaDrawingArea widget.

# Resources

The following X resources are available in addition to the GLwDrawingArea resources:

      ___________________________________________________________________________
      |                    |                    |         |                      |
      | Name               | Class              | Type    | OpenGL attribute     |
      |____________________|____________________|_________|______________________|
      |                    |                    |         |                      |
      | GLwNximage         | GLwCXImage         | Boolean | N/A                  |
      |____________________|____________________|_________|______________________|
      |                    |                    |         |                      |
      | GLwNshareLists     | GLwCShareLists     | Boolean | N/A                  |
      |____________________|____________________|_________|______________________|
      |                    |                    |         |                      |
      | GLwNshareListsWith | GLwCShareListsWith | Widget  | N/A                  |
      |____________________|____________________|_________|______________________|

Boolean ximage
  Is False by default, setting it to True will cause Mesa/X to use an Ximage (in contrast to a pixmap) as second buffer.

Boolean shareLists
  Is False by default, setting it to True will cause Mesa/X to share display lists among all widgets that have this ressource set to True.

Boolean shareListsWith
  [Caveat: This resource is not honored yet.]

  Is NULL by default, setting it to another MesaDrawingArea widget will cause the two widgets to share display lists.

.

# Utility functions

The following utility functions are available

void GLwMakeCurrent (Widget w)
  switches the Mesa/X context to the one associated to the widget w.

.

# SEE ALSO

GLwDrawingArea, MesaWorkstation

# AUTHOR

Thorsten.Ohl @ Physik.TH-Darmstadt.de

# DATE

$Id: MesaDrawingArea.pod,v 1.5 1995/05/19 20:31:00 ohl Exp $