Bump/Normal on top of base material

[dlVARTY]

Hi

I'm trying to achieve a knurl patern on this metal part here.:

I tried stacking second material using only a normal channel on top of the base metal material. This is not working the way I expected.

How would you achieve somehting like this? Is it even possible to apply a normal map on top of a material like a sticker?

[dlVARTY]

Hi

I'm trying to achieve a knurl patern on this metal part here.:

I tried stacking second material using only a normal channel on top of the base metal material. This is not working the way I expected.

How would you achieve somehting like this? Is it even possible to apply a normal map on top of a material like a sticker?

[peter.fagerberg]

Maybe I'm misunderstanding, but it's definitely doable. Here's an example of how the guys (and gals!) at Greyscale Gorilla do it. Displacement is, of course, optional. Hope it helps!

[peter.fagerberg]

Maybe I'm misunderstanding, but it's definitely doable. Here's an example of how the guys (and gals!) at Greyscale Gorilla do it. Displacement is, of course, optional. Hope it helps!

[dlVARTY]

Hi Peter, thanks for the answer.
Perhaps this graphics show my intentions a little better:

I want to stack the knurl pattern on top of an existing material. I was wondering if I could create materials existing only of the normal channel, that would be added to the underlying material.

I tried creating a material B:

but this results in this:

I tried this:

Which results in this:

I tried this:

which results in this:

And the most obvious, copying the base material, add the knurl texture to the normal channel and remap it:

This kinda works, however because i had to remap and scale the material B, the surface structure looks way different than Material A.

[dlVARTY]

Hi Peter, thanks for the answer.
Perhaps this graphics show my intentions a little better:

I want to stack the knurl pattern on top of an existing material. I was wondering if I could create materials existing only of the normal channel, that would be added to the underlying material.

I tried creating a material B:

but this results in this:

I tried this:

Which results in this:

I tried this:

which results in this:

And the most obvious, copying the base material, add the knurl texture to the normal channel and remap it:

This kinda works, however because i had to remap and scale the material B, the surface structure looks way different than Material A.

[peter_horvath · Accepted solution]

When you stack materials, you mix the entire material, not just the normal part. Think about it as a layer shader with the two materials. The projection/scale in the texture tag also affects the entire material.

What if you apply the projection and scale directly on the normal map with the uv_projection and uv_transform shaders?

[peter_horvath · Accepted solution]

When you stack materials, you mix the entire material, not just the normal part. Think about it as a layer shader with the two materials. The projection/scale in the texture tag also affects the entire material.

What if you apply the projection and scale directly on the normal map with the uv_projection and uv_transform shaders?

[dlVARTY]

Hi Peter, thanks for your input.

It's the answer I expected but not the one I was hoping for.

The uv_projection node doesn't seem to do anything. The texture uses the TextureTags Projection method. Is there anything I'm missing?:

The documentation on this node seems to have all the pictures missing: https://help.autodesk.com/view/ARNOL/ENU/?guid=arnold_core_ac_uv_projection_html

[dlVARTY]

Hi Peter, thanks for your input.

It's the answer I expected but not the one I was hoping for.

The uv_projection node doesn't seem to do anything. The texture uses the TextureTags Projection method. Is there anything I'm missing?:

The documentation on this node seems to have all the pictures missing: https://help.autodesk.com/view/ARNOL/ENU/?guid=arnold_core_ac_uv_projection_html

[peter_horvath]

The projection in the Texture Tag overrides the shader, you have to set it to UVW.

Also note that you might not see the proper projection in the viewport as I don't think the uv_projection shader is supported in the viewport code. But should be fine in the render.

[peter_horvath]

The projection in the Texture Tag overrides the shader, you have to set it to UVW.

Also note that you might not see the proper projection in the viewport as I don't think the uv_projection shader is supported in the viewport code. But should be fine in the render.