diff options
| author | Kenneth Russel <[email protected]> | 2006-06-02 00:05:01 +0000 |
|---|---|---|
| committer | Kenneth Russel <[email protected]> | 2006-06-02 00:05:01 +0000 |
| commit | 3f27df9bec4dbd2dbfef618e10693387c393c143 (patch) | |
| tree | 753ebf1b0c65b5d6d794f1be4f17083f63bb79e4 /doc/userguide/index.html | |
| parent | c74ad143b27ddddbdf4854b51837838ddb8c93b3 (diff) | |
Changed default sense of GLContext optimization flag to false. Now
must explicitly specify -Djogl.GLContext.optimize on the command line
to enable it. Added note to the user guide in the section on X11
platforms discussing this.
git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@795 232f8b59-042b-4e1e-8c03-345bb8c30851
Diffstat (limited to 'doc/userguide/index.html')
| -rw-r--r-- | doc/userguide/index.html | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/doc/userguide/index.html b/doc/userguide/index.html index 9bfe0caa4..a76b36b5c 100644 --- a/doc/userguide/index.html +++ b/doc/userguide/index.html @@ -846,7 +846,27 @@ hardware. <P> -No outstanding issues at this time. +Support has been added to the JOGL library for allowing multiple +threads to each have an OpenGL context current simultaneously, for +example to implement multi-head CAVE-like environments. Normally a +global AWT lock is held between calls to GLContext.makeCurrent() / +release() for on-screen heavyweight contexts (for example, those +associated with a Canvas or GLCanvas). We have found this to be +necessary for stability purposes on all supported X11 platforms, even +with relatively robust drivers such as those from NVidia. + +</P> +<P> + +To enable multiple GLContexts to be made current simultaneously on X11 +platforms, specify the command line argument +<CODE>-Djogl.GLContext.optimize</CODE> when starting the JVM. Note +that this may incur robustness problems, in particular when resizing +or moving windows. We have also found that ATI's proprietary drivers +do not work at all with this flag, apparently because they cause GLX +tokens to be sent to the X server for various GL calls even for direct +contexts. For this reason if the GLX vendor is ATI then this flag +currently has no effect. </P> |