#59: SHADOWS & LIGHT (Vue)
#58: ADVANCED DIRT MAPPING (Vue)
#57: SSS IN VUE 9, AND THE "SPECKLE" PROBLEM
#56: THE DEVIL IS IN THE DETAIL OF ART
#55: FIXING POSER CLOTHING
#54: MAKING "FOREST WAR - GOBLIN SHAMAN"
#53: MAKING A STUDIO RENDER FOR VUE
(and other apps)
#49: NEBULA MKIII (Vue)
#48: RENDER SETTINGS FOR VUE (Vue)
#47: POSTWORK - MAKING A RENDER INTENSE (Any)
#46: MAKING RIVERS THAT FOLLOW TERRAIN HEIGHTS (Vue or Bryce)

TEXTURE MIXING IN VUE

A neat trick in Vue, is to mix several texture images, to hide any overlap or repetition.
This is very useful on landscapes, rocks and such like.

Say you have several pictures of bark or rock. If you used an image to cover an entire terrain, odds are high it would lack enough resolution or it would show areas where it didn't tile perfectly.
See picture below

Obviously, this image is far too large in scale for this terrain, and looks obviously like bark, not some kind of landscape material.

Here I have used 4 different textures, blended together using procedural functions. This is a lot better, the fractal and noise functions I used to blend it, mixes the 4 textures into a more varied look. But it's too large in scale, you can still see lichen from the original photo which looks too obviously wrong.

This is the function used to create the blend of 4 textures.

 

So what happens when you scale the textures down?
As you can see, the repeating, non-tiling images cause obvious bands that look fake.
But there is a way to avoid this!

By using a rotate and twist function in the function editor, you can warp the original textures before blending, creating more organic blends and patterns, like the image below shows:

This is that texture applied to the base of a simple terrain and given an ecosystem. It looks much more "organic and natural"

However, note the Ground Plane, which has the exact same material applied, but looks "stripey" and bad. It's because the ground plane is an infinitely sized object and the rotate & twist function won't work on it.

And here's a pic showing how the function to add the more natural blend was achieved. Sorry for the size but clarity is essential I think :)

 

I hope you find this of use! :)

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All original art, writing on this site, copyright of Steven James, "Silverblade the Enchanter" ©2012