HOW Do I cre­ate a Desert sand ma­te­rial us­ing sub­stance De­signer?

Heida Tom­lin­son, Lon­don

3D World - - ARTIST Q&A - Pi­etro Chio­varo replies

To­day I will show you my sim­ple process for the cre­ation of the desert sand ma­te­rial us­ing Sub­stance De­signer. For this type of sub­stance, I se­lected the Phys­i­cally Based (Metal­lic/ Rough­ness) Graph Tem­plate and deleted the Metal­lic out­put since it isn’t nec­es­sary for this sub­stance.

At this point we can start to add the nodes use­ful for this ma­te­rial, so from the Sub­stance De­signer li­brary we need: the Grunge Map 006 and Dirt 1 noises (these are the main el­e­ments of the sand ma­te­rial), the Height to Nor­mal World Units fil­ter, two Lev­els fil­ters, a Warp fil­ter, a Blur fil­ter and the Gra­di­ent Map fil­ter which will give colour to the sand.

Now it’s time to link all of these el­e­ments to­gether. First of all, we need to link the Grunge Map 006 noise to the In­put of the Warp fil­ter, then we have to link the Dirt 1 to the Gra­di­ent In­put of the pre­vi­ous fil­ter. Then we have to link the Warp fil­ter to the Gra­di­ent Map which will be linked to the Base Color out­put of the ma­te­rial.

Next we have to link the Warp fil­ter to the first Lev­els fil­ter, and con­se­quently this fil­ter can be linked to the Rough­ness out­put of the ma­te­rial. At this time, we have to link the Warp fil­ter to the Blur fil­ter (this fil­ter will help us to sim­plify the height map cre­ation). At this point we can link the Blur to the sec­ond Lev­els fil­ter and con­se­quently link the el­e­ment to the Height out­put. The last con­nec­tion that we need to do is be­tween the Warp fil­ter and the Height to Nor­mal World Units fil­ter. This one must be linked to the Nor­mal out­put.

Now it’s time to set some pa­ram­e­ters. First of all, we have to de­crease the Con­trast value of the Grunge Map 006 from 0.5 to 0.4. For the Dirt 1 noise, I sug­gest you set the Scale value to 1 or 2. For the first Lev­els fil­ter (the one linked to the Rough­ness out­put) I de­creased the dark tones in or­der to de­crease the re­flec­tion of the sand. For the sec­ond Lev­els fil­ter I de­creased con­sid­er­ably the con­trast since I was look­ing for a flat ground. In the Height to Nor­mal World Units fil­ter I set a value of 1,000cm for the Sur­face Size and 5cm for the Height Depth. For the Blur fil­ter I set a value of 1.7 while for the Warp fil­ter I set an in­ten­sity of 0.2.

Lastly, in the Gra­di­ent Map I cre­ated a shade of yel­low, de­creas­ing the sat­u­ra­tion of the gra­di­ent.

I cre­ated this sim­ple scene in blen­der 2.8 in or­der to test the ma­te­rial; for the ren­der I used the Cy­cles en­gine

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