Damage Decals - Development Process
Why Cracks Form in Wood Fences and How to Avoid Them (fenceauthority.com)
I.. found this article (the link above) on the internet.. that's literally about why cracks form in wood fences and how to avoid them. And in that article, I found this image of a crack inside a wooden bark that I liked, so I took it, cropped it, imported it in Photoshop, created a Base Colour map, an Alpha map and a Normal map out of it, exported all three maps from Photoshop as targas, imported them in Unreal Engine and created a decal out of it.
Photoshop
Basically, how I set this up in Unreal is first and foremost, I changed the default material to a Deferred Decal, the Blend Mode in the material to Translucent and the Decal Blend Mode in the material to Translucent too, so that the Engine is will only pick up the information that's been coloured in white (inside of the Alpha map) and fade the black, therefore creating an opaque effect. Then, once I was finished setting the material up, I just placed the decals in my scene and arranged them across the wooden planks.
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