Blend Textures with vertex colors (Material Node Editor)

[Chimera]

Can somebody pls. help me setting up this network?
I would like to blend Textures or materials with the help of vertex colors. I am using also an additional texture map mask to multiply blend the Vertex colors. This is the Node plan, but as it is now it doesn`t working. I`m also using the OSL Nodes from Rohan Shashikant Dalvi to blend between the imputs and to get access to the RGB chanels.

https://www.youtube.com/watch?v=Si1HNb-ltrw&t=635s

Any help would be highly appreciated.

[juanjgon]

Hi,

I'm not sure if the vertex attributes are available from OSL. Can you please send me a scene as simple as possible including one of these OSL nodes to try to reproduce this problem here?

Thanks,
-Juanjo

[Chimera]

Thx for the replay. Here is a small scene with the blend material. I figured it out how to blend and paint with the vertex colors between the tree textures and it works very well.
The only thing I couldn`t get to work is to use the additional blended Vertexcolor + a maskmap channel and use it as mask instead of using only a vertex Channel.

The Houdini Mix node seems not be able to read the osl blend node.

[Chimera]

@juanjgon do you thing I could get some help on this one?

[juanjgon]

I'll take a look at it ASAP, but to be honest, this sounds to me like a limitation on the Octane core side. I hope to know more soon.

Thanks,
-Juanjo

[juanjgon]

Sorry, I'm not sure to understand the workflow of your shader, but I've been doing some tests here using a simple scene and OSL shader and the vertex attribute node seems to work fine with OSL, as you can see in the attached scene and image.

Hope it helps,
-Juanjo