un­der­stand­ing rough­ness

3D World - - TUTORIALS -

Rough­ness has be­come a key in­gre­di­ent in how re­flec­tive sur­faces are used in the lat­est gen­er­a­tion of ren­der soft­ware. Rough­ness de­fines the amount of mi­cro­scopic sur­face ir­reg­u­lar­i­ties in a ma­te­rial, which de­fines whether a sur­face is re­flec­tive like a mir­ror or less re­flec­tive like brushed alu­minium. Get­ting to know how a spe­cific soft­ware han­dles rough­ness can free up re­sources both in term of artist and com­puter time. For a dis­tinct look, us­ing a black and white ‘Rough­ness’ im­age map can be an ex­cel­lent way to bring life to a sur­face.

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