Author Topic: Backlit Surface?  (Read 3254 times)

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Backlit Surface?
« on: July 22, 2019, 02:52:18 pm »
Hello forum. I'm going crazy trying to search for this material. I know i've seen a thread related but can't find it. Trying to achieve something like the photo uploaded. Any clues ? Thanks for your time.

Offline Eugen Fetsch

Re: Backlit Surface?
« Reply #1 on: July 22, 2019, 11:28:54 pm »
Did you try Substance Designer or Alchemist?

Offline INNEO_MWo

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Re: Backlit Surface?
« Reply #2 on: July 23, 2019, 12:10:57 am »
Hello Niko.

I used the search but didn’t found the right entry. There was a thread a few years ago with a semi transparent aluminum from a MacBook housing.
We’d solved the light with a sphere that stuck half way in the surface and used an emissive material (not visible to the camera).

But in KeyShot 8 you can use a very strong spotlight projecting the time from outside onto the wood material, if you don’t want to use a simple emissive layer?!

Offline Eugen Fetsch

Re: Backlit Surface?
« Reply #3 on: July 23, 2019, 01:13:59 am »
If you're familiar with Blender, go for this shader - https://blendermarket.com/products/7-segment-shader-cycles-eevee. Bake/render it to a texture or video and label it in KS.

Online NM-92

Re: Backlit Surface?
« Reply #4 on: July 23, 2019, 05:06:37 am »
Thanks MWo , interesting technique. I can see this working with the right geometry and some bloom involved. Here's a quick test.

Offline RRIS

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Re: Backlit Surface?
« Reply #5 on: July 23, 2019, 06:54:41 am »
... if you don’t want to use a simple emissive layer?!

I might not understand the question correctly, by why not use a wood material with a mask and an emissive submaterial? You can add some glow to the mask lettering to create a light/wood transition.

Offline Will Gibbons

Re: Backlit Surface?
« Reply #6 on: August 06, 2019, 07:39:34 pm »
Wouldn't this be easily done with an emissive label?

Offline INNEO_MWo

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Re: Backlit Surface?
« Reply #7 on: August 07, 2019, 01:56:48 am »
This is exactly what I asked (like RRIS and Will).

Attached you'll find an example scene.
On the left side you'll will see an emissive label. And on the right side the projection of a spotlight.
All details in the attached scene.


Hope that helps

Cheers
Marco
« Last Edit: August 07, 2019, 02:26:36 am by MWo »

Online NM-92

Re: Backlit Surface?
« Reply #8 on: August 09, 2019, 10:16:45 am »
Ahhh, yes, i like the projection idea. Yes, it could be done with an emissive label, but somehow i didn't feel sattisfied with the results. In fact, i didn't find any appropiate ref image, so i used the one i uploaded but i was referring to those leds appearing BELOW the surface. It's commonly seen on high tech electronic products but i don't know how to search for an image. Thanks for the answers.

Offline INNEO_MWo

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Re: Backlit Surface?
« Reply #9 on: August 09, 2019, 02:35:22 pm »
Hey Niko.

To replicate this material, you can use a simple plastic or advanced material like a regular wood and use a vertex color texture with about 96% - 98% white in the opacity channel.
But you need a plane below with the emissive label.

A translucent material would bring a more photorealistic look, but tweak and render this material can took too much time?!


Cheers
Marco