MesaDrawingArea(3x)

Overview

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.

Date

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