HP Visualize J5000 hp workstations - hp-ux 10.20 graphics administration guide - Page 74

HP VISUALIZE-FXE/5/10 Configuration Hints, Overlay Visuals and Overlay Transparency

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Supported Screen Options The following screen options are supported: • CountTransparentInOverlayVisual • ImageTextViaBitMap • EnableIncludeInferiorsFix • DisableGlxVisuals HP VISUALIZE-FXE/5/10 Configuration Hints Overlay Visuals and Overlay Transparency HP VISUALIZE-FXE/5/10 devices have two visuals in the overlay planes, both depth-8 PseudoColor. The first (default) overlay visual has 256 entries per colormap and no transparency. The second overlay visual has 255 entries per colormap and supports transparency. To allow applications to determine which visuals are in the overlay planes, both overlay visuals are listed in the SERVER_OVERLAY_VISUALS property attached to the root window. The default overlay visual has a transparent type of "0" (None), while the transparent overlay visual has a transparent type of "1" (TransparentPixel). If you need an overlay colormap that supports transparency, create the colormap using the visual that has transparency in its SERVER_OVERLAY_VISUALS property. Disabling the GLX Visuals The HP VISUALIZE-FXE/5/10 products support the OpenGL extension to X (GLX). If HP OpenGL is installed on anHP VISUALIZE-FXE/5/10 system, then the GLX extension offers new entry points for obtaining more information about X visuals. As part of offering extended visual information, some extra X visuals appear in the X visual list. The extra visuals are simply duplicates of visuals that would normally appear in the X visual list. In case that the extra visuals cause problems with applications, a screen option can be used to disable them. To disable the GLX visuals, add the DisableGlxVisualsScreen Option to the X*screens file.For example: Screen /dev/crt/ ScreenOption DisableGlxVisuals Page 74 Graphics Administration Guide for HP-UX 10.20

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Supported Screen Options
The following screen options are supported:
CountTransparentInOverlayVisual
ImageTextViaBitMap
EnableIncludeInferiorsFix
DisableGlxVisuals
HP VISUALIZE-FXE/5/10 Configuration Hints
Overlay Visuals and Overlay Transparency
HP VISUALIZE-FXE/5/10 devices have two visuals in the overlay planes, both depth-8 PseudoColor.
The first (default) overlay visual has 256 entries per colormap and no transparency. The second overlay
visual has 255 entries per colormap and supports transparency.
To allow applications to determine which visuals are in the overlay planes, both overlay visuals are
listed in the
SERVER_OVERLAY_VISUALS
property attached to the root window. The default overlay
visual has a transparent type of "0" (None), while the transparent overlay visual has a transparent type of
"1" (TransparentPixel).
If you need an overlay colormap that supports transparency, create the colormap using the visual that
has transparency in its
SERVER_OVERLAY_VISUALS
property.
Disabling the GLX Visuals
The HP VISUALIZE-FXE/5/10 products support the OpenGL extension to X (GLX). If HP OpenGL is
installed on anHP VISUALIZE-FXE/5/10 system, then the GLX extension offers new entry points for
obtaining more information about X visuals. As part of offering extended visual information, some extra
X visuals appear in the X visual list. The extra visuals are simply duplicates of visuals that would
normally appear in the X visual list. In case that the extra visuals cause problems with applications, a
screen option can be used to disable them.
To disable the GLX visuals, add the DisableGlxVisualsScreen Option to the X*screens file.For
example:
Screen /dev/crt/
ScreenOption
DisableGlxVisuals
Graphics Administration Guide for HP-UX 10.20
Page 74