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"

Drop 110 FPS in Shadow Calc by rotating camera, why?

Hey Everyone!

UE 4.14 of course here. I have a Third Person character running around in my environment! I'm developing for VR so every frame counts. I'm also not the final artistic pass, so it's important that when I hand over the project that I have a good frame-rate abundance for my colleague to use. I'm shooting for 300fps on the handover, but this issue is kicking me well under my target.

When my character is standing in an area and the camera is facing a particular location, I see a HUGE framedrop, BUT when I rotate the camera to the other side, I get my frames back.

The strange part is that both according to ProfileGPU are caused by my ThirdPersonCharacter shadow. I can move the character around this area, as long as I'm looking this direction I get the same frame drop.

The dropped frames show up in "ShadowProjectionOnOpaque", with a 1.78ms on frame While the normal one shows up in "ShadowDepths", with a .02ms on frame

Screenshots: alt text alt text alt text alt text

Why does the camera location (not character) determine this? Where are the opaques in question? The shadow is rendering onto the landscape in both cases.

Also I see that some of my shadows seem a little too dark. Bonus points for pointing out where I'm going wrong on the lighting!

Any help would be appreciated!


Product Version: UE 4.14
more ▼

asked Dec 14 '16 at 06:15 PM in Rendering

avatar image

16 1 3 4

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

0 answers: sort voted first
Be the first one to answer this question
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