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and out. Setting this option to 2 or more is useful when you have more than
one viewport with different views. Increasing the number requires more
memory.
General Options
Sets performance-related options that are not hardware dependent.
Discard Back Faces Discards back faces when drawing objects. You cannot
see the effect of discarding back faces on some objects, such as spheres, because
you cannot see the back face even when it is present. The effect of discarding
back faces is visible on objects such as those that don't have a top. Discarding
back faces enhances performance.
Smooth Faces Smooths the facets in a polyface mesh object when displayed
in the viewport and in a rendering. This is useful when using objects that were
imported through 3DSIN or when using PFACE objects. Note that when
enabled, all objects in the drawing are made smooth. If you do not want all
objects to be smooth, recreate the model using a different object type.
Transparency Quality Adjusts the transparency quality. At the Low setting,
a screen-door effect achieves transparency without sacrificing speed. At the
Medium setting, the default in software mode, blending improves image
quality. The High setting, the default in hardware mode, produces an image
free of visual artifacts at the cost of drawing speed. Materials must also be
turned on for transparency to be visible.
The General Options prompt is redisplayed.
Acceleration
Specifies whether to use software or hardware acceleration in 3D.
If you select Hardware, you can also specify whether geometry acceleration
are turned on or off.
Hardware Specifies hardware acceleration. The hardware graphics card
performs most of the drawing tasks in 3D to increase performance.
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Enhanced 3D Performance on page 863
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Global Smooth Display on page 863
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Advanced Material Effects on page 863
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Gooch Hardware Shader on page 863
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Per-pixel Lighting on page 863
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Full Shadow Display on page 863
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Texture Compression on page 864
26 | Chapter 1 3D Commands