Hi David,
There is a bug in Java3D 1.2 in using two tex coords sets. Try
using the same tex coord set for both texture units and see if it is
any better. Will you also send us a test program to verify that
the problem you described is indeed fixed in the upcoming Java3D 1.2.1
release?
Thanks,
Charmaine Lee
Java3D Engineering Team
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> Date: Wed, 23 Aug 2000 21:17:49 -0400
> From: David <[EMAIL PROTECTED]>
> Subject: [JAVA3D] Multiple Textures in an Object
> To: [EMAIL PROTECTED]
>
> Hi all!
>
> Perhaps this does not do what I thought it would do. Or perhaps I am using
> it wrong.
>
> 1. I have defined a triangle strip array
> 2. I have two tex coord sets defined, mapped to tex units 0 and 1
> 3. I have a terrain mesh. As I am building the vertices I am specifying the
> texture coordinates.
> 4. Based on certain criteria for each vertex I either set the texture set to
> 0 or 1, with an appropriate texture coordinate
> 5. I am creating the appearance with two texture units, one specified with a
> "grass" texture, the other with a "sand" texture
> 6. All of the vertices are colored grey
> 7. Texture attributes on both texture units are set to modulate
> 8. I have directional lights and a ambient light
>
> My terrain comes out very odd. First of all the "sand" area is coming out
> green. Secondly I am not convinced it is applying the texture at all in
> those areas. Also there is massive "warping" in the "sand" areas. The
> grass areas look normal.
>
> First question: Can I do what I am trying to do here? have the textures
> change from grass to sand in a single mesh?
> Second question: If I can the what am I doing wrong?
>
> I am not creating the texcoordarrays and setting them in the geometry, I am
> just setting them at the vertex level as I make the mesh. I am assuming the
> contructor to the triangle strip array will make them for me of the proper
> size.
>
> This works fine if I only reference the first tex coord set.
>
>
> Dave Yazel
>
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