Chapter 2
Sun XVR-4000 Graphics Accelerator Overview
9
Standards (X-Windows, OpenGL)
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Viewport clipping
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Window ID (WID) clipping. Auxiliary clipping hardware for over eight
overlapping windows
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64 primary X Windows window IDs, 15 overlay window IDs
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Four 3
×
256 10-bit color maps (pseudo or direct color) in each video stream
■
One 3
×
4096 10-bit adjustable gamma correction table (for true color) for each
video stream. Separate red, green, and blue gamma
Video Operations
The Sun XVR-4000 graphics accelerator supports the following video outputs and
capabilities. The default video port can be either the 13W3A or 13W3B video port, as
selected through
fbconfig
(see Chapter 6)
Video Output
The Sun XVR-4000 graphics accelerator supports two simultaneous video streams.
These may be used for a variety of purposes, for example, two sides of a shared
frame buffer region on two high-resolution monitors or projectors, two independent
high-resolution X-window system screens displayed on two display devices, or
display of a high-resolution image on a monitor and simultaneous NTSC resolution
display of the contents of the high-resolution monitor.
Note –
If the scene content is shared between the two video streams (that is, it
comes from a shared frame and not from independent frame buffers) the vertical
rates must be identical to get correct display on both video outputs.
S-Video Capabilities
For S-video output (NTSC or PAL), any subregion of the primary display, up to the
full display, may be resized to NTSC or PAL for video taping.
■
Provide a secondary video output stream for NTSC video format at 640
×
480 at
60 Hz or PAL video format at 640
×
480 at 50 Hz, from a portion of the primary
video desktop to a TV/VCR video output port.
■
TV/VCR video output is S-video, with the appropriate mechanical connections.
■
If the S-video output is not in use, the second 13W3 output is available for a high-
resolution display.
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