[Sidefx-houdini-list] Bridge of Cards 2
antoine at floqfx.com
Wed Mar 26 21:28:08 EDT 2008
Yeah, a 52-layer shader is not particularly someplace you want to go
Again, here's the underlying concept, which is one of the coolest
things about the Mantra renderer: any parameter of the shader can be
overriden by data (attributes) on the geometry. And to do this, all
you have to do is match the name (and type and size, actually) of the
shader parameter with the data on the geometry, and it will
override. E.g. a 3-float vector attribute on the shader, e.g. color,
can be overridden by a 3-float attribute on the geometry. Just make
sure that they're either 3-floats or vector types. You can do it for
strings as well. Add a string attribute to the geometry called
'map' (if that's the string parameter on the shader), and the
geometry's version of 'map' will override. So now all you have to do
is randomize 'map' accordingly on the geometry.
On Mar 26, 2008, at 3:49 PM, Beatriz Lorenzo wrote:
> Hi everyone!
> this is Beatriz, learning Houdini, totally newbie, etc.
> Just wanted to say hello as I just signed up some days ago and also
> say that
> I'm making a bridge of cards too. I'm on the texturing phase and
> I've been
> reading all the posts about it but somehow I think I'm missing
> something. An
> attached file perhaps?
> I tried a different approach using layers (completely ignoring the
> fact that
> the multilayered VEX needed 52 layers!!!) but the expression I set
> for the
> current layer would not recognise the $PR so I thought perhaps it
> was not
> the best approach.
> I'm a little stuck with the whole random texturing thing so any
> help is
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