Add different textures to front and back of plane with solidify?

Question

I have a map; a plane and a Solidify modifier. I have already applied an Image Texture to one side, but Blender is obviously applying the texture to both sides.

I want to add a different Image Texture to the other side of the plane, however. Is there a way to do this?

I have tried to add another one using the Geometry > Backfacing feature, but it did not work.

Map mesh and .blend file's material:

Viewport render of map mesh and Backfacing material (not working):

Related http://blender.stackexchange.com/questions/2082/how-can-i-make-a-material-only-apply-to-a-side-of-a-plane — Denis, Jun 28 '16 at 18:31
The key piece of information you neglected to mention is that you are using a solidify modifier. — , Jun 30 '16 at 00:14
The reason backfacing doesn't work is that you have a solidify modifier The solidify modifier will make it so all of the object has an front surface (the bakface would be the interior faces of the object. If you want your map to have thickness you need to apply the modifier and your plane will behave like a real object. Select the back faces and apply a new material to them: http://i.stack.imgur.com/kCySk.jpg — , Jun 30 '16 at 00:15

score 4 · Accepted Answer · edited Apr 13 '17 at 12:57

4

There was only one image in the file, so I substituted a Diffuse BSDF for the second image. There are two options you have now.

Option 1

The reason that the Geometry > Backfacing did not appear to work was because that the Solidify modifier made it so that the map/diffuse went inside the map.

An exaggerated Solidify:

The solution if you want to keep the Solidify modifier goes like this. Apply all modifiers. Use the steps in Add different materials to different parts of a mesh? to apply the other image/diffuse to the non-map faces.

Option 2

Solution produced with Option 2 (low-res; 20 samples):

This is the better solution. Since the Solidify modifier does next to nothing, delete it, and the original node setup will work. The two Diffuse BSDF's outputs are crossed just because it needed to be inverted. I'm sure you understand.

The following .blend file produced the result at the top of Option 2.

edited Apr 13 '17 at 12:57

Community

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answered Jun 28 '16 at 18:49

Shady Puck

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Optionally you could also use the Backfacing output directly in a Color Mix Node to avoid having duplicate shaders – Duarte Farrajota Ramos Jun 28 '16 at 18:53
@DuarteFarrajotaRamos Agreed. Are duplicate shaders bad, though? – Shady Puck Jun 28 '16 at 18:54
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Not bad per-se, just a slight optimization to make make the tree simpler, probably a few less seconds of render – Duarte Farrajota Ramos Jun 28 '16 at 19:33
@DuarteFarrajotaRamos I'll keep that in mind. – Shady Puck Jun 28 '16 at 19:34
I've added a new image, after i applied these nodes, but its not working as you can see, both sides of the plane, when rolled up are same texture. – TheRageMachine Jun 29 '16 at 17:52
@Ulus can u share ur .blend file? – Shady Puck Jun 29 '16 at 17:53
http://www.blendswap.com/blends/view/85006 – TheRageMachine Jun 29 '16 at 18:04
@ShadyPuck Found a fix? :) – TheRageMachine Jun 29 '16 at 19:19
@Ulus I've been busy. Will try to get to it tonight. – Shady Puck Jun 29 '16 at 19:33
@ShadyPuck Ok! :) – TheRageMachine Jun 29 '16 at 20:01
@Ulus Cannot see .blend. Please upload to Blend Exchange. – Shady Puck Jun 29 '16 at 21:52
@ShadyPuck Blender file at top now :) – TheRageMachine Jun 29 '16 at 22:10
@Ulus Finally got it! – Shady Puck Jun 30 '16 at 00:26
@ShadyPuck The first option sounds a bit long and confusing, so I'l go for the 2. option because its true that the solidify doesn't make a big difference. Thanks. – TheRageMachine Jun 30 '16 at 02:21
@Ulus Glad that I could help. – Shady Puck Jun 30 '16 at 02:28
@TheRageMachine et al: Solidify makes one small difference: it adds a bit of a highlight to the side of the paper, giving it a much more realistic look. I wonder if there is another way to accomplish this effect? – Ideogram May 10 '21 at 07:09

score 1 · Answer 2 · answered Oct 19 '17 at 21:58

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I am able to use backfacing and solidify at the same time by checking the "Only Rim" option in the modifier.

answered Oct 19 '17 at 21:58

Tuker

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I upvoted since this worked for my case but it does not really solve the issue, as it only solidifies the rim. – Clanket Jun 11 '20 at 12:26

Pablo Fernández Esteberena · Answer 3 · 2022-04-29T19:56:20.993

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In the Solidify modifier, use the option Materials > Material offset to select a different material for the new face created by solidify. Make sure the second material is assigned to the object and it shows the texture you want. (I checked this on Blender 2.93)

edited Apr 29 '22 at 19:56

answered Apr 29 '22 at 19:32

Pablo Fernández Esteberena

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Add different textures to front and back of plane with solidify?

3 Answers3

Option 1

Option 2

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