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How to use comparaison operator in post process

Hey !

As GPU are not meant to do branching, we usually use Lerp to avoid using 'if' statements

exemple

  lerp ( currentValue, potentialvalue  , currentValue<0) 

in blueprint, there is 'if' statements, but no individual compare operators, is there a reason ? ( compiler translate automatically to lerp the if statements ?

Are they available and i'm missing them somehow ?

Thanks !

Product Version: UE 4.13
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asked Nov 24 '16 at 02:29 PM in Rendering

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Firefly74
1.3k 13 15 30

avatar image Deathrey Nov 24 '16 at 11:36 PM

I'm a bit confused. Are you asking about materials or BPs ?

avatar image Firefly74 Nov 28 '16 at 12:24 PM

Materials editor ( but i was thinking of the node editor by saying bp ^^ ) i tweeked a bit, so it work as i want now, but a proper way is always good to know ! :)

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