HP Visualize c180 HP Workstations - Graphics Administration Guide For Red Hat - Page 30
Supported screen options, Configuration hints, Overlay visuals and overlay transparency
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Supported screen options The following screen options are supported: • CountTransparentInOverlayVisual • ImageTextViaBitMap • EnableIncludeInferiorsFix • DisableGlxVisuals • OverlayTransparentIndex0 Configuration hints The following details and optimization hints are specifically for HP VISUALIZEFX5/10 boards. 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. Graphics Administration Guide For Red Hat Linux 6.2