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How can i mapping texture for natural look for stone wall edges.

Hello, which ways i must follow for solving this situation ?

NOTICE : I m at work, for this i cant reach some websites that banned from our system , so cant upload picture directly from computer / imgur . Sorry for this.

Wall Edge : https://resimyukle.xyz/resim/aP5cS

If you bevel those edges you’ll have a start. Could also try tessellation with a displace map.

For best results, model up some poly-strips that match the edges. You can then use a tileable ‘breakup’ texture with the mesh dbuffer decal shader to add in edge-wear where you want it.

To be honest, a wall like that would be best modeled and properly textured.