Indigo Renderer Forum

Is there a way to combine (blend) two materials in additive mode?

Not as in an editing image software. I think that this, as you may think of it would break a condition for a realistic behaviour of the resulting material.

Now, what is it that you want to achieve ? There is perhaps a different way for that.

In the C4D Exporter you can blend ISL Shaders in using:
- multiply
- add
- subtract

maybe more could be possible?!
But the restriction here is as I said that atm only blending of ISL Shaders is possible, not a texture with another one for example...

It's possible to add to textures via ISL, as texture can be accessed by ISL. The result will be clamped to 1 in case of albedo (or diffuse) textures

No, no, I thought about the blend material in additive mode, a la Maxwell Render.
For example, a base material oren nayar, and a phong with black color, only for subtle specularity.

atm Indigo has a Blend material that is linear and can be controlled by texture.
But A, B and C is available for tweaking too...

noldo wrote:For example, a base material oren nayar, and a phong with black color, only for subtle specularity.

In this case you want the phong albedo to be the same than the one used by the Oren-Nayar material, and control the specularity strength with a constant blend value between both.

noldo wrote:No, no, I thought about the blend material in additive mode, a la Maxwell Render.
For example, a base material oren nayar, and a phong with black color, only for subtle specularity.

That's clearly an interesting feature for that use, and it's true that regular blend make only dull materials. Only workaround is to have a very reflecting phong (high IOR) and blend it slightly to another material. But that's not perfect.

There's a coating material for this purpose that will be released soon.

OnoSendai wrote:There's a coating material for this purpose that will be released soon.

Indigo is a beautiful piece of software...

Indeed!
Cool varnished materials, yay!