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• Clients requesting (via XAllocNamedColor) the rgb.txt value of Transparent are not returned
entry 255.
This default behavior can be changed by setting the CountTransparentInOverlayVisual screen option.
When this option is enabled, the X server does the following:
• Specifies that the overlay visual has 256 entries.
• Creates the default colormap with entry 255 pre-allocated to Transparent. A client calling
XAllocNamedColor for entry Transparent in the default colormap will be returned entry 255.
• For all other colormaps, returns all 256 entries as allocable, but issues a warning message:
Warning: XCreateColormap is creating 256 entry cmaps in overlay visual.
Though allocable, entry 255 is hard-coded to transparency.
This warning is issued once per server execution.
HCRX and HP VISUALIZE Device-Dependent Information
This section includes information on the HCRX-8[Z], HCRX-24[Z], HP VISUALIZE-EG, HP
VISUALIZE-8, HP VISUALIZE-24, and HP VISUALIZE-48[XP] graphics devices.
The HCRX-8[Z] is a one-board device (two, with the optional accelerator) that has eight overlay planes,
two banks of 8 image planes, and 4 hardware colormaps. This device provides a superset of functionality
in the CRX.
The HCRX-24[Z] is a one board device (two, with the optional accelerator) that has eight overlay
planes, two banks of 12 image planes, and 4 hardware colormaps. This device provides a superset of
functionality in the CRX-24[Z].
The HP VISUALIZE-EG is either an unaccelerated built-in graphics device or a single board
unaccelerated graphics device (not counting the optional memory daughter card in either case). This
device provides compatible functionality with the Integrated Color Graphics device when in 8 plane
mode and has functionality compatible with the HCRX-8 device when in double-buffer mode. See
below for a description of these modes. For shorthand notation, from this point on in the document, HP
VISUALIZE-EG will refer to either mode, HP VISUALIZE-EG(8) will refer to 8 plane mode only and
HP [Dual] VISUALIZE-EG will refer to double-buffer mode only.
The HP VISUALIZE-8 is a two board accelerated device that has eight overlay planes, two banks of 8
image planes, and 4 hardware colormaps. This device provides a superset of functionality in the CRX.
The HP VISUALIZE-24 is a two board accelerated device that has eight overlay planes, two banks of 12
image planes, and 4 hardware colormaps. This device provides a superset of functionality in the CRX-
24[Z].
Graphics Administration Guide for HP-UX 10.20
Page 57