5.2.1. Launching DirectViz Interactively

The ray-tracing rendering mode can be activated via the DirectViz item in the viewer preferences menu. The user can switch back to OpenGL rendering at any time by unchecking this item (or the “enable” item in the DirectViz control dialog). As only one viewer can use DirectViz at once, if DirectViz was already active in another viewer, it will be deactivated and rendering will switch back to OpenGL.

From OpenGL to DirectViz rendering

Figure 5.5. From OpenGL to DirectViz rendering