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 HP-UX Starbase Device Drivers Manual - Vol1: HP 9000 Series 700 Computers

Chapter 3 The HCRX Family of Device Drivers
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Table of Contents

hphcrx Devices
Dithered Vectors
PowerShade
For More Information
Device Descriptions
HCRX-8
HCRX-8Z
HCRX-24
HCRX-24Z
Overlay Plane Rendering
PowerShade, 3D Surfaces Software
Gescapes
The Frame Buffer
Physical Address Space
To Access the Frame Buffer Directly
Frame Buffer Address Mapping
Frame Buffer Configurations
Device Support for the TrueColor Visual
TrueColor Visual Description
Device Specific Visuals Information
X Windows
Per-Window Double-Buffering
Color Maps
Starbase Color Maps and X11 Read/Write Restrictions
Accessing HP Color Recovery with X Windows
Backing Store
Backing Store Exceptions
Supported X Windows Visuals
X11 Cursor
Supported Visuals
Overlay Plane Transparency and the X Windows System
The HCRX-8/HCRX-8Z Frame-Buffer Configuration
The HCRX-24/HCRX-24Z Frame-Buffer Configuration
HCRX Configuration Hints
HCRX-8 and HCRX-8Z Visuals and Double-Buffer Support
Moving the Default Visual to the Image Planes
The Overlay Plane Color Map Management Scheme
Starbase Echoes
To Open and Initialize the Device for Output
Syntax Examples
Parameters for gopen
Special Device Characteristics
Device Coordinate Addressing
Dither Default
Starbase Functionality
Calls not Supported on the HCRX-8 and HCRX-24
Calls Not Supported on the HCRX-8Z or HCRX-8 with PowerShade
Calls Not Supported on the HCRX-24Z or HCRX-24 with PowerShade
Conditional Support of Starbase Calls on the HCRX-24 or HCRX-24Z
Supported Gescapes
Exceptions to Gescape Support
Porting from HCRX-8 to HCRX-24
CMAP_FULL Mode
Number of Color Planes
Porting from HCRX-24 to HCRX-24Z
Source Incompatibilities
Backing Store
Image Differences
screenpr for the HCRX Family of Graphics Devices

The hphcrx driver supports the HCRX family of graphics devices. These devices are all similar, and have different levels of hardware 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).

  • Dithering and HP Color Recovery.

  • Overlay plane's transparency (X Windows)

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



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hphcrx Devices  
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