x

Search in
Sort by:

Question Status:

Search help

  • Simple searches use one or more words. Separate the words with spaces (cat dog) to search cat,dog or both. Separate the words with plus signs (cat +dog) to search for items that may contain cat but must contain dog.
  • You can further refine your search on the search results page, where you can search by keywords, author, topic. These can be combined with each other. Examples
    • cat dog --matches anything with cat,dog or both
    • cat +dog --searches for cat +dog where dog is a mandatory term
    • cat -dog -- searches for cat excluding any result containing dog
    • [cats] —will restrict your search to results with topic named "cats"
    • [cats] [dogs] —will restrict your search to results with both topics, "cats", and "dogs"

How to create a Transparent Lamp??

This is more of a general question about how transparency works in UE4. Im trying to create a lamp that allows some light through and whilst doing so, makes the lamp partially emmisive in the area where light is strongest.

As you can see when applying even .99 transparency, I loose all shading from that material/object. I get shadows where i need it but only because the secondary light is completely ignoring the lamp shade. Also with the lamp shade being transparent, I can see the buld but the emmissive on sed bulb is also not coming through.

When there is no transparency, I get some light bleed which actually works in my favour. If i could somehow use this to my advantage and make it stronger (Allow more light through) without increasing the lights intensity.

Help please, I'm newish so probably just being a noob. Thanks

alt text

alt text

Product Version: UE 4.10
Tags:
lamp02.jpg (458.1 kB)
lamp03.jpg (323.3 kB)
lamp02.jpg (458.1 kB)
more ▼

asked Mar 23 '16 at 01:47 PM in Using UE4

avatar image

Gilbert159
23 1 5 7

avatar image Gilbert159 Mar 23 '16 at 01:49 PM

Here's an obvious example of what i'm going for alt text

(comments are locked)
10|2000 characters needed characters left
Viewable by all users

1 answer: sort voted first

Hi Gilbert,

You should be able to simply do this by using a Sub-Surface Shading Model in your Material.

You'll plug whatever you want the subsurface color to be into the SubSurface Color input. Typically just using the diffuse color should be OK for most setups.

Use the Opacity input to determine how much the subsurface color comes through.

-Tim

more ▼

answered Mar 23 '16 at 02:42 PM

avatar image

Tim Hobson ♦♦ STAFF
48.9k 887 101 877

avatar image Gilbert159 Mar 23 '16 at 05:20 PM

Thanks a lot. That pretty much did it. Did a lot of playing around and got basically what i was looking for. Need more tweaking and practice but for now, its good :)

alt text

light.jpg (250.8 kB)
avatar image Gilbert159 Mar 23 '16 at 05:34 PM

Also if anyone else Is trying this, I've just found out whilst testing that the light source cant be static. Else when you build your environment, the effect will not work.

avatar image ZixXer Sep 04 '17 at 06:37 PM

you can probably fake the effect with a fressnell effect that lights up the part that faces you the most and multiply that with a mask to prevent it from being strong at the top and bottum.

(comments are locked)
10|2000 characters needed characters left
Viewable by all users
Your answer
toggle preview:

Up to 5 attachments (including images) can be used with a maximum of 5.2 MB each and 5.2 MB total.

Follow this question

Once you sign in you will be able to subscribe for any updates here

Answers to this question