Here are the steps that illustrate the problem:
1- Assign a lambert to a primitive nurbs sphere
2- Connect the bumpmap generator to the bumpmap material input
3- In the bumpmap generator, create a planar XY texture projection
4- Connect the procedural fractal texture to the bumpmap generator input
5- Connect the Texture Space Edit node to the fractal coordinate input, set the UV remap max to 10,10,10
6- Connect the Vector state node to the texture edit input, set the state to Texture Vector
7- Render region the sphere.
8- :-)
9- Go to the bumpmap generator and create a spatial texture projection
10- Render region the sphere.
11- :-(
12- Get a projection lookup node and pipe it into the texture edit coordinate input
13- Pipe the texture stream into the surface input of the material
14- Render region the sphere
15- :-/
Bumpmaps work fine for planar, spherical, and cylindrical projections, but not for spatial. Please explain.
> > -----Original Message-----
> > From: owner-xsi(at)Softimage.COM
> > [mailto:owner-xsi(at)Softimage.COM] On Behalf Of brad
> > Sent: 23-March-2006 21:35
> > To: XSI(at)Softimage.COM
> > Subject: RE: bump mapping with procedural textures?
> >
> > The issue we've been running into with procedural bumpmaps
> > has to do with topologies more complex than spheres or tori,
> > such as landscape with multiple caves and holes (our prior
> > show!). In such situations we tend to use procedural textures
> > since they can be easily applied in a seamless fashion via a
> > 3D spatial coordinate system.
> >
> > Unfortunately, while RGB results are fine for where the
> > surface intersects the spatial texture coordinates, it
> > doesn't work for bump map vector space. You need to create a
> > 2D texture map for bumps to work.
>
> I'm not sure I follow you.
>
>
>
>
> >
> > Thus the question, does the Zbump node work for procedural
> > textures using spatial coordinates?
> >
>
> I've been getting very good results.
>
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