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I've been trying to figure out how to get a normal map from my highpoly mesh to a low poly mesh (which is just the high poly decimated a few times.) I've followed a few different tutorials and I keep getting the same results so I thought I'd ask for some help. I smart uv project the low poly mesh, then I add a normal map and image texture node and set it to non colour data and make sure thats still selected. I select the high poly, then the low poly and go into the cycles settings and make sure 'Selected to Active' is ticked then press bake. I'm left with this:

enter image description here

I'm not sure it's an unwrapping issue, topology issue. Some help would be appreciated if you can! Thanks

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  • $\begingroup$ @moonboots This is probably a really stupid question but it's saying the files too big - I compressed it but then it's not letting me upload as it isn't a .blend file. $\endgroup$
    – Georgia
    Commented Mar 28, 2021 at 11:48
  • $\begingroup$ Yeah I've deleted everything that isn't the two meshes and the file is still too big. $\endgroup$
    – Georgia
    Commented Mar 28, 2021 at 11:58
  • $\begingroup$ It's all deleted an it's still 79.6mb. Would I be able to share a google drive link? $\endgroup$
    – Georgia
    Commented Mar 28, 2021 at 12:11
  • $\begingroup$ drive.google.com/file/d/1ZM0TRhAiZQPDKVqe7kmtDU0_M-evvF1X/… Let me know if this works $\endgroup$
    – Georgia
    Commented Mar 28, 2021 at 12:21
  • $\begingroup$ I'm glad to see it's working but even with that change I'm still getting the same results :( Can you show me exactly what you did? I must be getting a step wrong. I have selected to active on in the baking tab, do you change and other settings? Ive put what my screen looks like in the answers. $\endgroup$
    – Georgia
    Commented Mar 28, 2021 at 12:40

1 Answer 1

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Put the 2 pumpkins at the exact same position, unwrap the low-poly (for example with Smart UV Project method), give it a material with an Image Texture (not plugged for the moment), create the image (make sure that you create a 32-bit Float), select the high-poly, shift select the low-poly, choose Bake Type > Normal, Selected to Active, Extrusion > 0.2. Then bake. Then plug the Image Texture into a Normal Map node that you plug into the Normal socket of the Principled BSDF or of the Diffuse.

enter image description here

enter image description here

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