| Step | Using IRIS IM | Using Xlib |
|---|---|---|
| "Opening the X Display" | XtOpenApplication | XOpenDisplay |
| Making sure GLX is supported (optional) | glXQueryExtension glXQueryVersion | glXQueryExtension glXQueryVersion |
| "Selecting a Visual" | glXChooseVisual | glXChooseVisual |
| "Creating a Rendering Context" | glXCreateContext | glXCreateContext |
| "Creating the Window" (see Chapter 3, "OpenGL and X: Examples") | XtVaCreateManagedWidget, with glwMDrawingAreaWidgetClass | XCreateColormap XCreateWindow |
| "Binding the Context to the Window" | GLwDrawingAreaMakeCurrent | glXMakeCurrent |
| "Mapping the Window" | XtRealizeWidget | XMapWindow |
Additional example programs are provided in Chapter 3, "OpenGL and X: Examples."