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Java Standard Edition (SE)

Java 2D Properties


Java Platform, Standard Edition Desktop Technologies Troubleshooting Guide
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A Java 2D Properties

This appendix presents properties that can be useful in troubleshooting Java 2D.

This appendix contains the following sections:

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 Default Java 2D Properties 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 SHM, if available, specify either one of the following properties:

      • NO_J2D_MITSHM unset

      • J2D_USE_MITSHM=true

    • To not use SHM, 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.

Properties on Windows

The following list describes some useful properties on Windows platforms.

  • The DirectDraw/GDI pipeline is the default pipeline for Windows. Change this default as follows:

    • -Dsun.java2d.noddraw=true Disable the use of DirectDraw pipeline. GDI will be used instead.

    • -Dsun.java2d.noddraw=false Enable the use of DirectDraw pipeline.

    • -Dsun.java2d.d3d=false Disable the use of Direct3D pipeline.

    • J2D_D3D=false Disable the use of Direct3D pipeline.

    • -Dsun.java2d.d3d=true Enable the use of Direct3D pipeline.

    • J2D_D3D=true Enable the use of Direct3D pipeline.

  • Control the use of the built-in surface punting mechanism as follows:

    • -Dsun.java2d.ddforcedram=true Keep volatile images in VRAM.

  • Control the use of DirectDraw blit operations as follows:

    • -Dsun.java2d.ddblit=false Disable the use of DirectDraw blit operations. GDI blits will be used instead.

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