Baking Maps in Blender - Baking Nodes

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Hey all–

So I followed along with THIS tutorial for baking high poly to low poly…

All is well, but at the 4:00 mark of the tutorial HERE, I don’t know how to bake the additional nodes that he doesn’t explain. I don’t know if I need to bake the node into a roughness texture (when I do what I think I should do, the map remains black–seen in attached image).

All the other nodes you see I got to work fine: color, norms, and cavity (AO)…but I can’t get a roughness map. How do I get a separate roughness map baked? Or do I use the cavity map as the roughness? What if I wanted them to be different?

In this node structure, the color ramp and mix are blended with color and cavity to produce the roughness right now…but I want that map to be different right? If I gave the PBR textures to an asset, I don’t want cavity and roughness to be the same do I?

I basically want to use the viewer node outcome for the roughness–but it doesn’t seem to want to bake there for me to save. What am I doing wrong?

You’ll see in the second link video at the 4:00 mark, he goes on to explain two things you need to do to bake out the color and roughness…but it’s confusing. Anyone got a sec to watch the last bit of that video? Thank so much!

rockbake2
rockbake21920×1041 699 KB

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Take the output of your color ramp (or whatever you’re plugging into the viewer node), plug it directly into Material Output, bypassing the Viewer, and bake ‘Emit’.

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Awesome. So, emit works for roughness too ya? I figured it looked like a roughness map also…I already have an emit bake for the cavitty/ao map…can’t I just use that for roughness in PBR? But if my color ramp is different (mix of color and cavity/ao) then that will bake differently then my straight cavity map I guess…

Now I thought I did this already. But it never baked anything new in the black roughness texture…Maybe it’s the viewer node that was the issue…

Thanks!

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OK guys, to clear up MY confusion, and maybe other people shared this experience…

The fix was to UN-tic the ‘Selected to Active’ for separate node baking. I’m no longer using the high poly for these bakes, and that was causing an error and confusing me.

Thanks all!