HP Visualize J5000 hp workstations - hp-ux 10.20 graphics administration guide - Page 64

HCRX-24[Z] and HP VISUALIZE-24: Eight Overlay Planes and 24

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installed in the hardware, plus one other hardware colormap available to applications. The image planes contain two hardware colormaps each usable by applications. When the default visual is in the image planes and the screen option EnableOverlayTransparency is not set, the overlay planes contain a single hardware colormap available to applications, plus a colormap reserved by the server (i.e., unavailable to applications) to guarantee the existence of transparency, and the image planes contain the default colormap permanently installed into the hardware, plus one other hardware colormap available to applications. When the screen option EnableOverlayTransparency is set, both the overlay planes and the image planes have access to one hardware colormap. The default colormap is not permanently installed in the hardware and is in the overlay planes by default, but the Default Visual can be located in the image planes as described in a previous section. HCRX-24[Z] and HP VISUALIZE-24: Eight Overlay Planes and 24 Image Planes The overlay planes contain the default colormap permanently installed in the hardware, plus one other hardware colormap available to applications. The image planes contain two hardware colormaps, each usable by applications. Although two hardware colormaps are available to applications in the image planes, a hardware restriction allows only one depth-12 or depth-24 colormap to be installed at any given time. Therefore, if two applications are run simultaneously and use different depth-12 or depth-24 colormaps, the application that has the colormap focus looks correct and the other is technicolored. HP VISUALIZE-48[XP]: Eight Overlay Planes and 48 Image Planes The overlay planes contain the default colormap permanently installed in the hardware, plus one other hardware colormap available to applications. The image planes contain four hardware colormaps, each usable by applications. The four hardware colormaps in the image planes can be treated as depth-8 or depth-24 colormaps. There are no restrictions on the types of colormaps that can be installed in the hardware at any given time. All four colormaps can be used with any visual class. Accessing HP Color Recovery Technology via Xlib Color Recovery is a technique to generate a better picture by attempting to eliminate the graininess caused by dithering. Access to the Color Recovery capability is transparent when using a 3D graphics API such as Starbase, HP-PHIGS or PEX. If you are producing graphics using Xlib calls, your application must perform some of the necessary processing. At server startup (if Color Recovery is not disabled in the X*screens file), the _HP_RGB_SMOOTH_MAP_LIST property is defined and placed on the root window. The above property is of type RGB_COLOR_MAP and carries pointers to structures of type XStandardColormap. It may be interrogated with calls to XGetRGBColormaps. The property Page 64 Graphics Administration Guide for HP-UX 10.20

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installed in the hardware, plus one other hardware colormap available to applications. The image planes
contain two hardware colormaps each usable by applications.
When the default visual is in the image planes and the screen option EnableOverlayTransparency is not
set, the overlay planes contain a single hardware colormap available to applications, plus a colormap
reserved by the server (i.e., unavailable to applications) to guarantee the existence of transparency, and
the image planes contain the default colormap permanently installed into the hardware, plus one other
hardware colormap available to applications.
When the screen option EnableOverlayTransparency is set, both the overlay planes and the image planes
have access to one hardware colormap. The default colormap is not permanently installed in the
hardware and is in the overlay planes by default, but the Default Visual can be located in the image
planes as described in a previous section.
HCRX-24[Z] and HP VISUALIZE-24: Eight Overlay Planes and 24 Image Planes
The overlay planes contain the default colormap permanently installed in the hardware, plus one other
hardware colormap available to applications. The image planes contain two hardware colormaps, each
usable by applications.
Although two hardware colormaps are available to applications in the image planes, a hardware
restriction allows only one depth-12 or depth-24 colormap to be installed at any given time. Therefore, if
two applications are run simultaneously and use different depth-12 or depth-24 colormaps, the
application that has the colormap focus looks correct and the other is technicolored.
HP VISUALIZE-48[XP]: Eight Overlay Planes and 48 Image Planes
The overlay planes contain the default colormap permanently installed in the hardware, plus one other
hardware colormap available to applications. The image planes contain four hardware colormaps, each
usable by applications.
The four hardware colormaps in the image planes can be treated as depth-8 or depth-24 colormaps.
There are no restrictions on the types of colormaps that can be installed in the hardware at any given
time. All four colormaps can be used with any visual class.
Accessing HP Color Recovery Technology via Xlib
Color Recovery is a technique to generate a better picture by attempting to eliminate the graininess
caused by dithering. Access to the Color Recovery capability is transparent when using a 3D graphics
API such as Starbase, HP-PHIGS or PEX. If you are producing graphics using Xlib calls, your
application must perform some of the necessary processing. At server startup (if Color Recovery is not
disabled in the X*screens file), the
_HP_RGB_SMOOTH_MAP_LIST
property is defined and placed on
the root window.
The above property is of type
RGB_COLOR_MAP
and carries pointers to structures of type
XStandardColormap. It may be interrogated with calls to
XGetRGBColormaps
. The property
Graphics Administration Guide for HP-UX 10.20
Page 64