Gold coin help - one side dark

#1

Hey guys! I’m at my wits end with this material. As you can see, the image is from the King’s Treasure challenge. I decided to give it a go for the fun of it. Well, it’s been anything but fun. The coin is killing me. Right now I’m using a mia_material_x, with a diffuse, spec map plugged into reflectivity, a normal map and a Displacement. Also an HDR image plugged in to the environment of the SG node. A couple of things: I can’t get it to reflect anything on one side… it’s dark, while the other side of the coin is bright. I a little reflection of the environment would be good to. No matter what I do, I can’t figure out what is causing one side to be brighter than the other. Any help would be greatly appreciated.

#2

Hey,

Do the coins have thickness? or just round circles?

#3

they are indeed a cylinder, so yeah… they are thick. I checked normals, just to be sure and they’re all going in the correct direction.

#4

Double check if they’re using the same material?

#5

Aren’t the normals locked on those faces?
just to be sure of textures, would you disconnect all your textures including normal and disp maps and see if the problem still persists?

#6

Displacement removed = same problem
Reflection/Spec map removed = same problem
Normal map removed = material goes black in hypershade, renders with out diffuse… but at least the gloss is uniform. Maybe I’ll opt for a regular bump instead and try that.

#7

Ok… it was most definitely my normal map, although I don’t know why. Putting a regular bump on it fixed it. Thank you for the responses. Its something I should have known, but after working on something, you need a fresh set of ideas sometimes. Thanks!

#8

Glad you got that problem fixed.

#9

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