Color/greyscale vertex attribute and displacement

[tombyrom]

Hello,
I don't think Color/greyscale vertex attribute works when using in the Vertex displacement mixer as the blend texture?

They work fine in the main composite material for the masks but seems to have no effect when used in the Vertex displacement mixer?

[tombyrom]

Attaching a basic set up as an example.

I tried using mix texture and a composite texture piped into a vertex displacement as well instead of the Vertex Displacment mixer but that doesn't work either.

[paride4331]

Hi tombyrom,
Taking a look at it, I'm not sure I fully understand the expected final result, but did you know that, unlike the texture displacement node, the vertex displacement node doesn't require texture baking?
Regards
Paride

[tombyrom]

The maps being baked here is irrelevant, the fact remains that when using a vertex color/attribute as a mask, either via Vertex Displacement Mixer or a standard Mix node into Vertex Displacement, it does not work...

In my example file, there are two colours on that material, the displacement when rendered is the same across both colors of the plane, this is wrong. It should only be displacing half the surface, just like how the colour is being masked - it's the same mask that's driving the colour on the plane but it's is not masking the displacement.

Surely VERTEX attributes are compatible with VERTEX Displacement?


EDIT: I've simplified my example further, I have also baked out the vertex colour as a map and you can switch between the two materials to see the problem.

[paride4331]

Hi tombyrom,
Thanks, I see what you're saying now. From what I remember, this is a known issue (related to the SDK). I tried using a single material with the mixer displacement node, but it didn’t seem to make a difference (attached screenshot). I’m reporting it to the developers to see if it’s a workflow issue and if there’s a quick fix.
Regards
Paride

[tombyrom]

Thanks for confirming the issue paride4331, yes it seems very strange that this does not work with vertex displacement... Baking out maps is not an option because every time you make a change you need to re-bake them out...