Just a quick attempt at a wood floor texture.

I'm having all sorts of issues with it ("can't layer a patterned texture over
blah blah", the latest beta hanging while rendering the edges of the planks
sometimes), but..., I'm at least starting to like the effect, if not the
implementation.

Yes? No? Does it look like a wooden floor to you?

I was going for something like the wood texture on the right of this image:
http://www.888phantom.com/Wood%20Grain%20Samples%202.jpg - and while I haven't
hit it exactly, it's at least starting to look somewhat plausible to me at the
moment. But then again, you lose your objectivity after playing with the same
thing for too long.

Cheers,
Edouard.

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Attachments:
Download 'wood.jpg' (322 KB)

Preview of image 'wood.jpg'

"Edouard" <pov### [at] edouardinfo> wrote:
> Just a quick attempt at a wood floor texture.
>
> I'm having all sorts of issues with it ("can't layer a patterned texture over
> blah blah"

I've run into that same error several times now. For some textures it's a hard
limitation to work around.

> Yes? No? Does it look like a wooden floor to you?

It looks like wood, to be sure. Maybe you could raise the frequency of the year
lines. And perhaps you could squeeze your color_map values in a little bit for
sharper transitions.

The grooves seem to be the main issue, though. In the reference you linked to,
they travel along the wood grain, surfacing occasionally. Yours appear to
surface in a somewhat random fashion.

Yours:
_    -    _   -
  -    __
_   -     -   _


Theirs:
_ __   ___  _  _
___   _   ___  _
 _  _   ___   _


Also, the grooves seem a little sharp. Maybe a little more blending wouldn't
hurt :) Anyway, it looks pretty good.

Sam

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Beautiful wood floor street.  Concrete and asphalt are so out of 
fashion... :)

-- 
a game sig: http://tinyurl.com/d3rxz9

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"Samuel Benge" <stb### [at] hotmailcom> wrote:
> "Edouard" <pov### [at] edouardinfo> wrote:
> > Just a quick attempt at a wood floor texture.
> >
> > I'm having all sorts of issues with it ("can't layer a patterned texture over
> > blah blah"
>
> I've run into that same error several times now. For some textures it's a hard
> limitation to work around.

I wish the SDL would give me more "modular" access to the various shader
parameters - for example, I'd like to be able to tweak the reflection without
having to touch anything else. I keep having these dreams about how to fix it
all in the codebase...

> The grooves seem to be the main issue, though. In the reference you linked to,
> they travel along the wood grain, surfacing occasionally. Yours appear to
> surface in a somewhat random fashion.

I felt drawn to trying to model this kind of wood in the SDL for some reason,
but I'm having trouble thinking how to get those grooves via SDL pigments. My
grooves are simply bozo stretched in the z dimension, and modulated by the
underlying wood grain (they appear more in the darker areas, and not at all in
the lightest areas).

I've never tried wood before, but I also didn't feel the ones in wood.inc gave
enough detail for my liking.

> Yours:
> _    -    _   -
>   -    __
> _   -     -   _
>
>
> Theirs:
> _ __   ___  _  _
> ___   _   ___  _
>  _  _   ___   _

(Heh - here we are on a ray tracing forum, and we're communicating via ASCII
drawings :-)

I know exactly what you mean - but I've run out of ideas for how to get a fixed
width groove to appear and disappear with some correlation to the wood grain...

> Also, the grooves seem a little sharp. Maybe a little more blending wouldn't
> hurt :) Anyway, it looks pretty good.

Thank-you!

> Sam

Cheers,
Edouard.

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nemesis <nam### [at] gmailcom> wrote:
> Beautiful wood floor street.  Concrete and asphalt are so out of
> fashion... :)

I shot a bunch of light probes a week or two ago, but have only processing some
of them from the original jpeg stacks. I should process one of the indoor ones
for my future wooden floor scenes :-)

Cheers,
Edouard.

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<snip>
>> Theirs:
>> _ __   ___  _  _
>> ___   _   ___  _
>>  _  _   ___   _
>
> (Heh - here we are on a ray tracing forum, and we're communicating via 
> ASCII
> drawings :-)
<snip>

I thought exactly the same thing :)   Gold!

Cheers Dre

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Good work.

I am a bit concerned about the *grooves* though. I examined a piece of floor 
board in my room, and thought that they are much shallower than in your 
image. Especially with the high shininess of the wood, this would be rather 
ugly in RL. Try to balance both to satisfaction. I suspect that in very 
shiny floor boards, the grooves are filled-in with lacquer.

Thomas

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> Just a quick attempt at a wood floor texture.
>
> I'm having all sorts of issues with it ("can't layer a patterned texture over
> blah blah", the latest beta hanging while rendering the edges of the planks
> sometimes), but..., I'm at least starting to like the effect, if not the
> implementation.
>
> Yes? No? Does it look like a wooden floor to you?
>
> I was going for something like the wood texture on the right of this image:
> http://www.888phantom.com/Wood%20Grain%20Samples%202.jpg - and while I haven't
> hit it exactly, it's at least starting to look somewhat plausible to me at the
> moment. But then again, you lose your objectivity after playing with the same
> thing for too long.
>
> Cheers,
> Edouard.
>

Looks good.

Looking at my hard wood floors, I see that the space between planks is 
not constant, fery far from it: it ranges from none to a bit over 2mm, 
up to 4mm between the ends, and varies along the length of the various 
planks.
There are barely any groove, and they are not very dark. They seems to 
come mostly from ewar and tears and often looks like tiny bits where the 
varnish got worn more.

The frquence looks correct to me. Maybe more range: areas with higher 
frequency and areas with lower.
Just missing some knots...


Alain

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