A.1 Properties on Solaris OS and Linux
The following table describes the default values of some useful properties on Solaris OS and Linux platforms.
Table A-1 Java 2D Defaults on Solaris OS and Linux
Setup |
DGA |
SHM |
Pixmaps |
OnScreen |
OffScreen |
|---|---|---|---|---|---|
Solaris SPARC with DGA support |
On |
On |
Off |
DGA/Software |
Software |
Solaris SPARC with no DGA, Solaris x86, Linux, SunRay, VNC |
Off |
On |
On |
X11/MITSHM |
Shared/Server Pixmaps |
J2SE 1.4 or greater: Remote X server, ssh |
Off |
Off |
On |
X11 |
Server Pixmaps |
J2SE 1.3.1 or less: Remote X server, ssh |
Off |
Off |
Off |
X11 |
Software |
The following list explains how to change the defaults.
The X11 pipeline is the default pipeline for Solaris OS and Linux. Change this default as follows:
-Dsun.java2d.opengl=true — Attempt to enable the OpenGL pipeline.
The use of DGA is controlled as follows:
NO_J2D_DGA unset — Use DGA, if available.
NO_J2D_DGA set — Disable the use of DGA.
MIT Shared Memory Extension (SHM) is controlled as follows:
To use Shared Memory Extension, if available, specify either one of the following properties:
NO_J2D_MITSHM unset
J2D_USE_MITSHM=true
To not use Shared Memory Extension, specify either one of the following properties:
NO_J2D_MITSHM set
J2D_USE_MITSHM=false
The general use of pixmaps is controlled as follows:
-Dsun.java2d.pmoffscreen unset — Use pixmaps if DGA is not available.
-Dsun.java2d.pmoffscreen=true — Force the use of pixmaps.
-Dsun.java2d.pmoffscreen=false — Disable the use of pixmaps.
The use of Shared and Server pixmaps is controlled as follows:
J2D_PIXMAPS unset — Use both types.
J2D_PIXMAPS=shared — Use only shared memory pixmaps.
J2D_PIXMAPS=sserver — Use only server–side pixmaps.
The choice of default visual is controlled as follows:
FORCEDEFVIS unset (default) — Use the best visual available.
FORCEDEFVIS set to a hexadecimal value — Use the visual whose ID is the hexadecimal value.
FORCEDEFVIS set to any other value — Use the default visual.


