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. 

POM PDO Black Artifacts

When using POM's PDO function in forward rendering at all, or in deferred rendering without TAA (TAA hides the artifact), there are black artifacts that pop up everywhere. There's also the wireframe of the mesh visible under certain conditions.

alt text

alt text

When working with some people on Discord to figure it out, we have an idea of what might be causing it. We had to set "Early z-pass" to "None" in the project settings, and disable "Use as occluder" in the mesh itself. Finally, in the material itself, we had to enable "Specify Manual Texture Size" and after all that, the problem was fixed.

The conclusion we came to is that PDO is somehow getting negative numbers out of it, which seems like it might be a bug somewhere since that "shouldn't be possible" according to the people I was talking to.

Product Version: UE 4.19
Tags:
more ▼

asked May 03 '18 at 06:43 AM in Bug Reports

avatar image

Zero-Night
86 8 11 19

avatar image Jeff A ♦♦ STAFF May 04 '18 at 03:53 PM

Hello,

We've recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://epicsupport.force.com/unrealengine/s/

Thanks

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

1 answer: sort voted first

Allegedly, the cause of the issue is SV_Depth usage with dynamic flow control, combined with depth pre-pass. Posted a workaround on the forums.

more ▼

answered May 03 '18 at 10:04 PM

avatar image

Deathrey
7.8k 130 31 292

(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