I made a tileable hf from a Marlin Studios sample texture. First it didn't
work so good because of the internal shading of the texture map. When
I removed the shadind and added some dirt to distract the eye the result
was quite good :) Take a look.

http://www.pp.htv.fi/kkivisal/brick.htm

_____________
Kari Kivisalo

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The kindly Rev. overheard Kari Kivisalo <kki### [at] pphtvfi> saying
on 22 Jul 2001: 

> I made a tileable hf from a Marlin Studios sample texture. First it
> didn't work so good because of the internal shading of the texture
> map. When I removed the shadind and added some dirt to distract the
> eye the result was quite good :) Take a look.
> 
> http://www.pp.htv.fi/kkivisal/brick.htm

It is indeed.  Love the tree, btw -- did it take forever to render with 
that invisible tree in there?
-- 
Rev. Bob "Bob" Crispen
crispen at hiwaay dot net

Let me tell you what else is in trouble here: the Internet. In the
end, the Internet itself will not be able to survive if it becomes
a haven for illegal activity. - Edgar Bronfman

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"Rev. Bob 'Bob' Crispen" wrote:
>
> > http://www.pp.htv.fi/kkivisal/brick.htm
> 
> It is indeed.  Love the tree, btw -- did it take forever to render with
> that invisible tree in there?

It would take if I render with area_light and 3D tree model. To make it
faster I use a blank png with a tree silhouette in alpha channel mapped
to a pair of triangles. For soft shadows I blurred the alpha chanel in
Photoshop, much faster and better results than with area_light. It took
about 5 minutes on 1GHz Athlon.

http://www.pp.htv.fi/kkivisal/tree_alpha.jpg

_____________
Kari Kivisalo

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In article <3B5B1346.88C002EC@pp.htv.fi>, Kari Kivisalo says...
> 
> I made a tileable hf from a Marlin Studios sample texture. First it didn't
> work so good because of the internal shading of the texture map. When
> I removed the shadind and added some dirt to distract the eye the result
> was quite good :) Take a look.
> 
> http://www.pp.htv.fi/kkivisal/brick.htm
> 
> _____________
> Kari Kivisalo
> 
This is great: could you modify it to take all kinds of bricks?
-- 
Regards,  Sander

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Kari Kivisalo wrote:
> 
> I made a tileable hf from a Marlin Studios sample texture. First it didn't
> work so good because of the internal shading of the texture map. When
> I removed the shadind and added some dirt to distract the eye the result
> was quite good :) Take a look.
> 

That looks good, but it will only work on such fairly 'nice' textures with
mostly orthogonal lighing and not very deep gaps between the stones.  

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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Christoph Hormann wrote:
>
> That looks good, but it will only work on such fairly 'nice' textures with
> mostly orthogonal lighing and not very deep gaps between the stones.

Removing internal shadind doesn't just apply to bimaterial? textures.
All kinds of textures can be processed to reduce the internal shadind but
multiple lighten layers doesn't necessarily work on every texture. The only
requirement seems to be that the illumination on the surface is (close to)
monochromatic, the number of light sources doesn't matter, in fact it's
better to have multiple sources. If Photoshop magic doesn't work I can
always use graphics tablet to edit the tricky parts.

I brought this up because I haven't seen this discussed before. Most of the
textures have limited use because of the shadind. I think Strata sells
textures without internal shadind with hand crafted bump and specularity
maps included.

The ideal texture would be recorded with 48 bit color laser scanner which
also records the geometry. Distortions from surface geometry would be
removed using the large scale 3D data. The small scale 3D data goes to bump
map. I'm not sure how one would record the specularity map but I'm sure
there is a solution. Transparency maps would be nice too. Quite expensive
though.


_____________
Kari Kivisalo

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"Kari Kivisalo" <kki### [at] pphtvfi> wrote in message
news:3B5D0C09.B094EB1A@pp.htv.fi...
> Christoph Hormann wrote:
> >
> > That looks good, but it will only work on such fairly 'nice' textures
with
> > mostly orthogonal lighing and not very deep gaps between the stones.
>
> Removing internal shadind doesn't just apply to bimaterial? textures.
> All kinds of textures can be processed to reduce the internal shadind but
> multiple lighten layers doesn't necessarily work on every texture. The
only
> requirement seems to be that the illumination on the surface is (close to)
> monochromatic, the number of light sources doesn't matter, in fact it's
> better to have multiple sources. If Photoshop magic doesn't work I can
> always use graphics tablet to edit the tricky parts.

Could you outline what processes are used to do this?
I don't have Photoshop (GIMP, actually) but was hoping I could maybe learn
the basic premise so it could be applied to other paint programs.

Thanks,
Darcy

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