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Correct shadows without indirect lighting

Hello! Since calculation of GI takes much time, I turned off indirect lighting. After that, volume light samples become black and my movable objects had black shadows in lighted scenes. I solved this by making material of movable objects slightly emissive. So, I have a problem: how to make movable objects dark in dark scenes? Maybe there is a way to calculate volume light samples without calculating indirect lighting?

Product Version: UE 4.11
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asked Apr 15 '16 at 10:41 AM in Rendering

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Hi StarFlame,

Volume Light Samples (Indirect Lighting Cache) are generated when lighting is built. These require lightmass to work properly.

If you want to go the route of using a slightly emissive material for your characters to simulate indirect lighting you would probably want to setup a material parameter collection and be able to call this in a blueprint. You could then use a trigger to change the color dynamically using a value input for the emissive power that can be adjusted when entering darker or brighter areas as you need.


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answered Apr 15 '16 at 02:19 PM

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Tim Hobson ♦♦ STAFF
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avatar image StarFlame Apr 15 '16 at 02:31 PM

Thank you, Tim.

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