Marty,
Thanks for your bug reports. The following 2 bug reports have been
filed for our investigation.
BugId 4623971 : setTexture() on Appearances, using TextureUnitState, may cause
apps. to hang.
BugId 4623981 : setTexture() on diff. Appearances, Appearance.setTexture(),
cause apps to hang.
thanks,
Chien Yang
Java 3D Team.
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> Date: Tue, 15 Jan 2002 09:04:07 -0800
> From: "Marty Vona (Marty Vona)" <[EMAIL PROTECTED]>
> Subject: [JAVA3D] Two potential J3D 1.3b1 bugs, setTexture() one very nasty
> To: [EMAIL PROTECTED]
>
>
> Attached are two programs which demonstrate what appear to be two different
potential bugs in Java3D 1.3b1. Each program demonstrates *both* bugs, the
difference is one uses Appearance.setTexture() directly and the other uses
TextureUnitState.setTexture().
>
> The setTexture() bug is mission-critical for us, as it would be I imagine for
anyone doing e.g. large segmented terrain navigation with per-segment texture
LOD switching.
>
> The details are described in the header comments:
>
> * File: MultipleSetTextureBug.java
> * Author: Marty Vona ([EMAIL PROTECTED])
> * Created: 1/14/02
> *
> * Description: Demonstrates application hang bug with calling setTexture() on
> * many different Appearances, without using TextureUnitState. Also
> * demonstrates a won't render before canvas resize bug.
> *
> * Required files: apimage.jpg, bg.jpg from the Java3D demo/java3d/images
> * directory (must be placed in current directory)
> *
> * Tested on two platforms:
> *
> * Sun J2SDK1.4b3 + Blackdown Java3D 1.3b1 on
> * Linux 2.4.9-12 + XFree86 4.0.3 + NVidia 2313 + NVidia GeForce2 MXR
> *
> * Sun J2SDK1.4b3 + Sun Java3D 1.3b1 on
> * Windows 2000p2 + NVidia GeForce2 MXR
> *
> * NVidia "TwinView" enabled in both cases.
> *
> * Bug 1: 25 rotating tetrahedron Shape3Ds are created, each with its own
> * Appearance. Two Textures are created and are assigned alternately to the
> * tetrahedrons in checkerboard fashion. Every 500ms one of the Appearances
is
> * toggled to the other texture. After a short time (varies, usually less
than
> * 30 seconds) the entire application hangs.
> *
> * Bug 2: Upon startup, nothing is rendered until the application frame is
> * resized by the user.
> *
> * Adapted from: AppearanceTest.java 1.26 01/06/20 16:17:56
>
> -----
>
> * File: MultipleSetTextureBugTUS.java
> * Author: Marty Vona ([EMAIL PROTECTED])
> * Created: 1/14/02
> *
> * Description: Demonstrates application hang bug with calling setTexture() on
> * many different Appearances, using TextureUnitState. Also
> * demonstrates a won't render before canvas resize bug.
> *
> (rest same)
>
> Marty Vona
> NASA/JPL SAP Developer
>
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