When working with textures with Java 3D 1.2beta1 be sure to be aware of
a problem discussed in the README:
NOTE: This version of Java 3D uses shared contexts in OpenGL for Display
Lists and Texture Objects. Some video cards, such as the Riva TNT, have
problems in this area. If you are experiencing no rendering, crashes,
or no textures being displayed, this may be the problem. We have added
a runtime property that allows applications to disable the use of shared
contexts. For single canvas applications, there will be no change in
behavior. For multiple canvas applications, memory requirements will
increase by using this property. Here is an example of using the
property.
java -Dj3d.sharedctx=false MyProgram
Dan Petersen
Java 3D Team
Sun Microsystems
** Look for the newsgroup: comp.lang.java.3d **
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> Date: Tue, 14 Mar 2000 17:24:19 -0500
> From: Neil Daniels <[EMAIL PROTECTED]>
> Subject: Re: [JAVA3D] Help! Bug in TextureLoader?
> To: [EMAIL PROTECTED]
>
> For what it's worth - I also had some problem with textures and j3d1.2. The
> problems went away when I went back to j3d1.1.2.
> Very annoying.
> Neil
>
> -----Original Message-----
> From: Discussion list for Java 3D API
> [mailto:[EMAIL PROTECTED]]On Behalf Of Ahmed Shakil
> Sent: Tuesday, March 14, 2000 4:32 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] Help! Bug in TextureLoader?
>
>
> Hey I have went to your site but it doesnt even show anything. just says
> applet loaded. I also have some wierd problems with the Java3D beta release
> when working with textures. I dont if it is because I am using windows2000.
> but it does not load all the textures
>
> http://www.vr-fx.com/3d_work/Terraforming/show.html
>
> this site works with the j3d 1.1 release version
> but not with j3d1.2 beta
>
> Raffi, if u email me your full java source. I can look it up on my machine
>
> Ahmed
>
> -----Original Message-----
> From: Kasparian, Raffi J. [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, March 14, 2000 11:29 AM
> To: [EMAIL PROTECTED]
> Subject: [JAVA3D] Help! Bug in TextureLoader?
>
>
> I have uploaded the 3D-tutorial applet EarthApp (slightly modified) to the
> internet but I can't get it to load the image file, earth.jpg. I have tried
> using the relative path for the image file (option 1) as well as the
> absolute path (option 2). I have also tried creating a URL from the absolute
> path (option 3). None of these work in appletviewer or Internet Explorer 5.
> To my astonishment, however, if I use appletviewer and there is a copy of
> earth.jpg in my current local directory, option 1 works! I didn't think
> applets had automatic permission to read files on the local host computer!
> Be that as it may, I need the applet to use the image file located on the
> internet so that anyone can run it -- not just someone who happens to have a
> personal copy of earth.jpg.
>
> The code that attempts to load the image follows. Go ahead and run the
> applet at http://www.erols.com/quantime/earthApp/EarthApp.html and see if
> you get any better results. I would sure like to know what's going on!
>
> Please, does anyone know a way to load an image into a texture that works?
>
> Thanks, Raffi
>
> My html file, image file and class file are all in the same folder:
> http://www.erols.com/quantime/earthApp/EarthApp.html
> http://www.erols.com/quantime/earthApp/earth.jpg
> http://www.erols.com/quantime/earthApp/EarthApp.class
>
> /********************************/
>
> String filename = null;
> URL url = null;
> TextureLoader loader = null;
> ImageComponent2D image = null;
> try{ //OPTION 1
> filename = "earth.jpg";
> loader = new TextureLoader( filename, this );
> ImageComponent2D tempImage = loader.getImage();
> System.out.println( "option 1 succeeded." );
> image = tempImage;
> }catch( Exception e ){
> System.out.println( "option 1 failed." );
> e.printStackTrace();
> }
> try{ //OPTION 2
> filename = "http://www.erols.com/quantime/earthApp/earth.jpg";
> loader = new TextureLoader( filename, this );
> ImageComponent2D tempImage = loader.getImage();
> System.out.println( "option 2 succeeded." );
> image = tempImage;
> }catch( Exception e ){
> System.out.println( "option 2 failed" );
> e.printStackTrace();
> }
> try{ //OPTION 3
> url = new URL( "http://www.erols.com/quantime/earthApp/earth.jpg" );
> loader = new TextureLoader( url, this );
> ImageComponent2D tempImage = loader.getImage();
> System.out.println( "option 3 succeeded." );
> image = tempImage;
> }catch( Exception e ){
> System.out.println( "option 3 failed" );
> e.printStackTrace();
> }
>
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