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"

4.8 Static shadow problem

Well, we got really weird looking shadow after upgrading to 4.8.

At first, all static objects stop casting shadow. After messing around with some lights, we got back to the picture below. As you can see, the static shadow in 4.8 is extremely crude compare to 4.7. We didn't really do anything out of ordinary in term of light setting. Some static lights, some dynamic, with one lightmass volume, and distance field on.

Hope someone can shred some light on this. Best!alt text

Product Version: UE 4.8
shadowproblem.jpg (95.7 kB)
more ▼

asked Jun 11 '15 at 11:41 PM in Bug Reports

avatar image

181 12 17 36

avatar image KillerPenguin Jun 12 '15 at 06:27 AM

Also got this error message: "xxx has been saved with empty engine version. The asset will be loaded but may be incompatible.

avatar image Lovecraft_K ♦♦ STAFF Jun 12 '15 at 02:35 PM

Hi KIllerPenguin -

The light Source that is supposed to be generating the nice shadows from 4.7, can you give me a breakdown of its settings? Is it Stationary, if you are using Distance Ray Traced and CSM with it? If it is purely static what is the lightmap resolution of your floor? Also what are your world settings for Lightmass in 4.7 versus 4.8? Also can you reproduce this in a blank project?

For the warning message that you are seeing, this can happen with converted projects sometimes, you should be able to open the asset and re-save it in the current project and not receive the warning again.

Thank You

Eric Ketchum

avatar image KillerPenguin Jun 13 '15 at 07:33 AM

Our main light source is set to movable, so that it also cast shadow for dynamic objects. It's also the main source of our shadows. Our terrain use lightmap scale of 0.5 to save Gpu memory space. It also take very long time to bake static light. I don't know setting of my lightmass fr the top of my head, but I'll post more about it tomorrow.

ps. The project had been resaved several times, the error msg comesup only when we try to build the project.

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

1 answer: sort voted first

Okay I got it. In 4.8, non-Cascading shadow Maps is broken. Usually with 4.7 you can set Dynamic Shadow Distance to 0 and nothing is wrong with the shadow. However, in 4.8 this will result in many shadow disappearing.

For anyone having the same problem, you probably have to go in and readjusting all those Dynamic shadow distance settings and etc to use the cascade map for now.

more ▼

answered Jun 14 '15 at 03:51 AM

avatar image

181 12 17 36

(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