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Sun XVR-1000 Graphics Accelerator Installation and User’s Guide • June 2002
Dynamic Multisample Antialiasing
Multisampling (full-scene dynamic multisample antialiasing) removes the jagged
edges on 3D data. An image is sampled at a higher resolution than the screen,
typically four to 16 samples per pixel. This method yields improved images, but at
the price of increased render time.
The Sun XVR-1000 graphics accelerator has 72 Mbytes of memory for the frame
buffer so that the image can be multisampled at up to 16 samples per pixel in a
single pass, depending on the resolution. The higher number of samples per pixel,
the better the image quality but the longer the display time. Depending on the
screen resolution (
TABLE 4-3
), the number of samples per pixel can be increased to
improve image quality.
You can get better sample densities with dynamic mode if the window is smaller
then the screen size.
Use a combination of the
fbconfig
command and/or environmental variables to
invoke multisampling. You can enable multisample mode for a particular OpenGL
application or for all OpenGL applications.
Enabling Multisampling for a Specific OpenGL
Application
1. Set the multisample environmental variable.
This enables multisampling for the current window:
2. For this example, set the maximum sample usage to four samples per pixel:
# setenv ZFB_USE_MSB
# setenv ZFB_USE_MSB 4
Summary of Contents for XVR-1000
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