High Performance Grayscale and Color Graphics

The hpgcrx driver supports a family of similar devices. These devices have different levels of hardware and SPU support for the following operations:

Generating vectors.
Write-enabling planes.
Writing pixels to the frame buffer with a given replacement rule.
Moving a block of pixels from one place in the frame buffer to another.
Using bank-select and double-buffering per window.
Filling rectangles (flat shading).
Filling shaded polygons.
Performing 3-D transformations.
Clipping.
Dithering.

The hpgcrx device driver supports the high performance graphics devices listed below.

hpgcrx Devices For the Series 700

The hpgcrx device driver is supported on the Series 700 integrated graphics workstations as described in the chapter "Series 700 Graphics Devices" in the Graphics Administration Guide.

The hpgcrx device driver also supports:

The GRX is an 8/8-plane, 1280x1024 pixel grayscale device.
The CRX is an 8/8-plane, 1280x1024 pixel color display.
The Dual CRX is a dual-headed 8/8-plane, 1280x1024 pixel color display. The two CRX devices are on a single board, requiring only one hardware expansion slot.
The CRX-24 is a 1280x1024 pixel, direct color display with 24 image planes and 8 overlay planes.
The CRX-24Z is a CRX-24 24-plane, direct color graphics card with an accelerator, providing high performance 3D solids modeling and anti-aliasing.

Other Information

The integrated grayscale and integrated color displays have a single-buffer of 8 planes. The GRX, CRX and Dual CRX have two buffers of 8 planes each for double-buffering. The CRX-24 and CRX-24Z have 24 planes single-buffered or 12/12 planes double-buffered.

In order to reduce flickering, these graphics devices refresh the attached CRT displays at 72 Hz. The medium resolution displays (1024x768) refresh the display at 75 Hz.

High Performance Grayscale and Color Graphics

Technical documentation

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hpgcrx Devices For the Series 700

Other Information