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4.14 Dynamic Lighting Bug - VR

So we have a VR game that uses level streaming to load in levels to cut back on immersion killing loading screens. The problem is that it seems to not load dynamic lights properly and we are not sure why.

We are running the game in Forward Rendering, and when we load the levels, every even load is correct lighting and every odd load is missing lights. It seems to be primarily the Dynamic Directional lights. This issue was not present in Deferred so we are curious what we are missing. We need forward rendering to guarantee we hit 90 FPS

Product Version: UE 4.14
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asked Mar 10 '17 at 07:33 PM in Bug Reports

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avatar image Ed Burgess ♦♦ STAFF Mar 20 '17 at 08:08 PM

Hey PancakeMisery,

I wasn't able to reproduce this issue, here are the steps I took:

  • Opened new VR Template project

  • Enabled forward shading in the project settings and restarted the project

  • Opened a new default map and set the directional light to moveable

  • Alt dragged the floor mesh to the side to duplicate it

  • Add a dynamic point light that is red and clearly visible on top of the duplicated floor. (make a new sublevel using the floor and red light)

  • Repeat this process so that there is a second sublevel but with a greenlight(your scene should look like the screen)

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  • In the level blueprint load both sublevels on begin play (see screen)

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Let me know if I need to change the test so that I can reproduce this issue on my end using the VR Template.


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We have not heard back from you in a few days, so we are marking this post as resolved for tracking purposes. If you are still experiencing the issue you reported, please respond to this message with additional information and we will follow up.


Ed Burgess

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answered Mar 24 '17 at 01:52 PM

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