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The images shown in the 3D display are rendered using OpenGL, therefore the quality and speed of the rendered scenes in the 3D display is dependent on the graphics card in the computer running the application. Computers with graphics cards that do not support OpenGL acceleration will still be able to display images, but the quality and speed with which the images are displayed may be markedly reduced. To help alleviate situations like this, multiple ``levels of detail" are supported ranging from ``Fastest" to ``Best" which adjust the quality of the rendered scenes accordingly. For most computers purchased within the past year, ``Best" level of detail should be appropriate.
In addition to the ``level of detail", the scene can be further adjusted by modifying a few select OpenGL parameters such as the background color as well as the lighting and material models. All of these parameters can be adjusted in the application preferences (see Chapter 11).
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