projection color to uvw not working with bump Tweet

[WhyGee]

Hi,

When using projection color to uvw connected to a procedural noise it works fine when the output is plugged into albedo, but when connected to bump, it doesn't do anything.

Attaching a sample scene.
Thanks
Yaniv

[juanjgon]

Hmm, I think the vertex attributes don't work for bump, do they?

-Juanjo

[WhyGee]

I don't know. I thought since it's actually generating projection coordinates then it should work just like world space coords work with noise and bump?

[juanjgon]

I think that right now, once you connect a node including vertex attributes to the bump input, the bump doesn't work, probably because the core can't compute the right shading derivates information for bump/normal mapping from vertex data. I don't know the details, but it sounds like this kind of limitation that other renderers also have.

-Juanjo

[WhyGee]

Can you suggest a workaround for this? I've tried using the tool baked image node but that didn't work either.

Different issue I've also noticed is that bump textures from uv2 create strange artifacts on the uv island boundaries but when swapping uv2 to uv, it works fine.

Thanks