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"

Office Holiday

Epic Games' offices will be on holiday from June 22nd to July 7th. During this period support will be limited. Our offices will reopen on Monday, July 8th. 

Translucent material no roughness, specular available


I'm trying to make a translucent material with roughness. But it is greyed out. In tutorials and other videos i see everyone use translucent material with not greyed out roughness, specular,...

Why is it not possible with me? :(

alt text

Please help

Product Version: UE 4.12
more ▼

asked Aug 01 '16 at 09:47 PM in Using UE4

avatar image

81 2 13 14

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

1 answer: sort voted first

Hello, WixZ,

On the Translucency tab of your material, there is a "Lighting Mode" selector. Set it to "Surface TranslucencyVolume" and you will see the Metallic, Specular and Roughness pins enabled.

alt text

Please note that specularity on a translucent material has a lot of limitations and will probably behave different to what you expect, certainly different than what you see on an opaque material. Doing a realistic glass shader, for example, is not as straightforward as it sounds.

All the best.

blueprint10.jpg (56.4 kB)
more ▼

answered Aug 02 '16 at 02:39 AM

avatar image

591 13 10 34

avatar image WixZ Aug 03 '16 at 12:55 AM

That fixed it! Thanks a lot! :)

avatar image ACLUND3 Nov 25 '16 at 11:57 PM

Worked for me too, thanks!

avatar image Mahruf Mar 05 '17 at 04:43 AM

Great. I had the same problem. Thanks for the solution.

(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