strange texture animation behavior

[Keith W. <kw...@cs...>]

I am doing a simple texture "animation" by scrolling the UV coordinates 
of a texture, exactly as per the Nanosaur public code.  I got it to work 
without a problem, except there's a problem.  I have a couple models in 
the world right now.  It's a test world so it's not very interesting, 
just a place to screw around.  The texture and object in question 
animate perfectly, a really cheap looking waterfall which I will make 
fancier when the time comes.  Here's the thing.  Some of the other 
objects in the world are displaying texture scrolling as well, but yet 
some other objects aren't.  I didn't want anything to scroll that I 
don't explicitly designate as such of course.  I can't figure out why 
some unintended objects and textures are scrolling while others remain 
normal.

Bear in mind that each of these objects came from a separate 3DMF file 
with its own texture and basically totally separate from all the other 
models in every way I can imagine.

What could possibly cause this?  Here's my code.  It's ridiculously 
simple, because as far as I can tell, scrolling the texture isn't very 
hard.  (This code is written with the Queeg framework, with necessary 
accessors added to the associated classes, and the function below is 
called from the Queeg Update function).

Any help appreciated.  Thanks.

void AnimateWaterfallTexture()
{
    TQ3Matrix3x3 uvTransformMatrix;
    Q3Matrix3x3_SetTranslate(&uvTransformMatrix, gH, gV);
    gH += 0;
    gV -= .003;
   
    QGTriMesh* triMesh = gWaterfall->GetFirstTriMesh();
   
    TQ3TriMeshData triMeshData;
    triMeshData = triMesh->GetTriMeshData();
   
    TQ3SurfaceShaderObject    shader;
   
    if (triMeshData.triMeshAttributeSet)
    {
        if (Q3AttributeSet_Contains(triMeshData.triMeshAttributeSet, 
kQ3AttributeTypeSurfaceShader))
        {
            Q3AttributeSet_Get(triMeshData.triMeshAttributeSet, 
kQ3AttributeTypeSurfaceShader, &shader);
            Q3Shader_SetUVTransform(shader, &uvTransformMatrix);
            Q3Object_Dispose(shader);
        }
    }
}


________________________________________________________________________
Keith Wiley                                kw...@cs...
http://www.unm.edu/~keithw                 http://www.mp3.com/KeithWiley

"Yet mark his perfect self-contentment, and hence learn his lesson,
that to be self-contented is to be vile and ignorant, and that to
aspire is better than to be blindly and impotently happy."
                                           --  Edwin A. Abbott, Flatland
________________________________________________________________________