Hi John,
There is two issues here as far as I can see.
First there is the problem that the edge between two mipmap
levels are very visible. This can be removed by turning on
trilinear filtering:
// Trilinear filtering
texture.setMagFilter(Texture.BASE_LEVEL_LINEAR);
texture.setMinFilter(Texture.MULTI_LEVEL_LINEAR);
where texture is your texture.
If this alone does not help enough you have to set the distance
mipmap changes. I am no Java3D expert but in OpenGL this
is done by setting the values of GL_TEXTURE_BASE_LEVEL,
GL_TEXTURE_MAX_LEVEL, GL_TEXTURE_MIN_LOD,
GL_TEXTURE_MAX_LOD. This was introduced in OpenGL
1.2, and since Java3D only uses OpenGL 1.1 I suspect that
Java3D does not support this feature.
Jacob Marner
----- Original Message -----
From: "John Barrus" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, March 16, 2002 16:00
Subject: [JAVA3D] Problems with blurry texture maps
> I am using Java3D to make driveway paving simulations. I take an existing
> picture of a driveway, and then calculate the geometry of the driveway, lay
> a texture on it and merge the driveway image with the digital photograph.
>
> Unfortunately, the driveway ends up looking blurry because the mipmapped
> textures are swapped in too close to the virtual camera. I have an example
> at http://www.johnbarrus.com/java3dblurry/
>
> I'd love to adjust the distance at which the mipmaps are swapped in. Anyone
> have any ideas? Is this a known bug in Java3D or perhaps am I doing
> something wrong?
>
> Thanks for your help.
>
> Sincerely,
>
> John Barrus
>
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