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Translucency map problem

How do i make translucency map for Unreal Enigne? Trying to make nature assets. Weird, i tried to google solution and every time it is all about transparent (black and white variant). Can i make it in photoshop? Or should i bake it? (I'm using Blender for modeling). I mean translucency like this one>

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  • Axi5
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    Axi5 interpolator
    That's a diffuse map not a transparency map.

    Transparency is a single value i.e.
    0 = fully transparent
    100 = fully opaque

    Make a black and white map in the first instance. You probably don't want to use "transparency" but "masking" instead for foliage, it's better performance.
  • Obscura
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    Obscura grand marshal polycounter
    That is a translucency map though :D you need to set the shading model to 2 sided foliage, and then the subsurface color input will open up where you can hook up the translucency map.
  • Alex_J
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    Alex_J veteran polycounter
    I think they are asking how to produce the map. 

    I might be wrong, but the way I've done it is just make some edits from the albedo map in photoshop. It's purely artistic, no science (not when I do it anyway.) Usually it's a little brighter, just plug it in and tweak it till your leaves are looking nice.
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