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"

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. 

specular highlights on translucent material

so i was looking for a way of having specular highlight on a cornea material of an eye, and it seems like no one asked this since 4.8 was out, but i still can't make any progress

what is the propper setup for that?

Product Version: UE 4.8
Tags:
more ▼

asked Jul 14 '15 at 05:28 AM in Rendering

avatar image

Razorfield
11 5 6 9

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

1 answer: sort voted first

Hey Razorfield,

UE4 4.8 now has an experimental feature that will create specular highlights on Translucent materials.

Steps to Recreate:

  1. Create a new Material

  2. Add a base color that will show specularity well, IE a saturated blue.

  3. Plug in a Constant value of say, .5 into specular.

  4. You can add a normal which usually works best, nothing too noise just enough to reflect the specular map.

  5. Change your material Blend mode to Translucent

  6. Scroll down under your Details > Translucency options and click the box for Screen Space Reflection

  7. Under that same Panel Change Lighting Mode to Surface PerPixel, this feature is experimental.

  8. Lastly by pressing the ~ key enter the command r.ForwardLighting 1

This will allow for specularity on the surface of a translucent material.

Enjoy, Logan

more ▼

answered Jul 14 '15 at 02:05 PM

avatar image Melvin Eng Dec 16 '15 at 11:00 AM

Hi Logan,

I did the exact same steps you described, but it didn't work. My translucent material still stays the same as it was, merely see-through without any specular reflection whatsoever. Am I missing something still? FYI I'm using v4.9.1.

Regards, Melvin.

avatar image Logan Bailey ♦♦ STAFF Dec 16 '15 at 02:47 PM

Hello Melvin,

Are you sure you entered r.ForwardLighting 1. You will only see a black material before you do.

alt text alt text

Logan

before_command.jpg (96.9 kB)
aftercommand.jpg (86.3 kB)
avatar image Melvin Eng Dec 17 '15 at 02:11 AM

Hi Logan,

Well yes I did. Anyway I finally managed to enable it. Apparently temporal AA needs to be enabled too.

Cheers :-)

(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