IBM POWER GXT4000P, Installation And Using Manual

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Chapter 6. Software Application Considerations
This chapter discusses operating system tasks related to the POWER GXT4000P or
POWER GXT6000P graphics adapters.
Starting the Server in Overlay and Color Planes
The X server can create windows in a separate set of frame buffer planes called
overlays. The X server supports this task by defining distinct visuals for the overlay and
color planes.
The -layer n parameter for xinit gives the system the ability to select the hardware
frame buffer planes in which to run the X server. A value of:
v
0 indicates the color plane.
v
1 indicates the overlay plane (default).
These are the only valid choices. All other choices default to layer 1.
Start the X server in the color planes by selecting one of the three examples:
v xinit -- -layer 0
<other flags>
v xinit -- -layer 1
<other flags>
or
v xinit --
<other flags>
Starting the X Server for the 3D APIs
Following are xinit options that take advantage of 3D hardware capabilities. These
options are required to run the 3D application programming interfaces (APIs).
API for GLX 1.3
Starting the X server for the GLX API requires an additional parameter
-x GLX
.LI . For
example:
xinit -- -x dbe -x abx -x GLX <other flags>
API for OpenGL 1.2
Starting the X server for the OpenGL 1.2 API requires no additional parameters. For
example:
xinit -- -x abx -x dbe <other flags>
API for graPHIGS
Using the visual associated with the window, graPHIGS supports creating gP windows
as 8-bit Indexed, 24-bit TrueColor, or 24-bit DirectColor. Additionally, the gP window
must be created in the color planes and for the best performance, it is recommended
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