[Bf-cycles] Bf-cycles Digest, Vol 26, Issue 1

[Dmitry Andreev]

Hmmm. I am not sure about that. All those Mix and Add shaders nodes only
operate on BSDF weights, so I am not sure what you would clamp there
exactly.

As for Maxwell, they have two blending nodes. Normal (like Mix in Cycles)
and Additives (Add in Cycles). Add works in pretty much the same way. There
is no energy conservation as far as I can tell. At least I can easily
create a material with 10 additive BSDFs there that will blow the whole
scene up as soon as light hits it.

Those are layers. Within layers you can have your BSDFs and assign weights
to them. All those weights are renormalized. So it you have 3 BSDFs with
weights 10, 20 and 30%. Then it will divide each weight within that layer
by the sum of weights in the same layer. 10% becomes 10% / ( 10 + 20 + 30 )
= 16%, 33% and 50%.

But stuff that you can easily in belnder/cycles with nodes.



On Mon, Jun 3, 2013 at 3:54 AM, lsscpp <lsscpp at gmail.com> wrote:

> Clamp would shrink the whole value range between 0 and 1, while now the
> add-shader node goes over. I imagined this as maxwell material system
> works. you can layer many shaders and choose to mix or add. in any case the
> shader won't give back more light than it receives, since the whole
> material gets clamped
>
>
> ---------- Messaggio inoltrato ----------
> >>From: Dmitry Andreev <andcoder at gmail.com>
> >>To: bf-cycles at blender.org
> >>Cc:
> >>Date: Fri, 31 May 2013 19:44:57 -0700
> >>Subject: Re: [Bf-cycles] Bf-cycles Digest, Vol 25, Issue 15
> >>You can totally create such thing using existing Max and Add nodes
> easily. But I don't see how that Clamp is going to help with >>anything?
>
> >>Why not have a add-shader node with multiple inputs, a slider for each
> one of them, and a Clamp switch?
>
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