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Lights with IES profiles in Blueprints incosistent brightness

Description: I have created several blueprints that contain light components. The blueprints control the light's brightness allowing the player to turn lights on and off. This issue occurs when an IES profile is applied to the light and I use a Set Brightness node in the event graph. The Set Brightness node seems to be setting the light to about 1/4-1/5 the apparent brightness that setting the brightness directly in the UI shows.

Steps to reproduce: 1) Create a point light and add an IES profile. Set the brightness to something easy to remember. In my case 500. 2) Convert to blueprint 3) Add some kind of event (Begin Play, input, etc. If using BeginPlay it needs a short delay for the effect to be seen) that CHANGES the brightness, in my case 600 (Setting it to the existing brightness doesn't demonstrate the effect) 4) Play and watch what happens

The blueprint light with the IES profile gets darker (Unexpectedly) while the non-ies light gets brighter (As would be expected).

This effect can also be seen if using the level blueprint to set the non-blueprint IES light directly.

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asked Mar 11 '14 at 05:34 AM in Everything Else

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ue4-archive ♦♦ STAFF
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Hey Tom,

Thanks for your report! We were able to reproduce this issue with the light becoming dimmer instead of brighter when used in a blueprint and have submitted a defect report with your repro information. Hopefully we will have this fixed for a future Rocket Beta release.



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answered Mar 11 '14 at 05:34 AM

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ue4-archive ♦♦ STAFF
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