User`s guide

Page 20
Viewing 3D Graphics
XCLAIM VRÕs QuickDraw 3D Acceleration supports the
following advanced 3D graphics capabilities:
¥ QuickDraw 3D RAVE Support
¥ Six perspectively correct texture mapping functions
¥ 16-bit z-buffering (a process that removes hidden
surfaces)
¥ Flat and Gouraud shading
¥ Alpha blending and fog effects
¥ Video texture and texture lighting
These features make it possible to quickly render 3D
graphics, produce atmospheric effects, calculate light and
color shading, and determine which objects are in the
foreground and which are in the background.
XCLAIM VR only displays 3D graphics in thousands and
millions of colors. 3D acceleration is not supported when
your color depth is 256 colors because there are too few
colors to display complex 3D textures. To change your
color depth, use the control strip, ATI Popup Menu, or the
Monitors & Sound control panel.
You can use the 3D Memory Monitor to see how memory
on your XCLAIM VR is allocated when displaying 3D
graphics. This will allow you to optimize 3D
performance. You can also adjust the compression of
textures using the 3D Texture Compression feature.
3D Texture Compression
You can adjust the 3D texture compression using the 3D
features included with XCLAIM VR. Some 3D textures
demand a signiÞcant amount of memory. To free up some
memory you can use 3D texture compression.