View source for Distance Based DX11 Tesselation - Video

[[Category:Tutorials]]
[[Category:Material]]
[[Category:Community Videos]]
[[Category:Community Created Content]]
{{Rating|Type=Video|Versions=4.15}}
==Overview==
This tutorial covers how to create a distance based tessellation material being driven by 6 changeable parameters.

==Setup==
Before you start you should have a basic knowledge of the Material Editor being used within the Unreal Engine 4. Also recommended but not mandatory is an understanding [http://www.nvidia.com/object/tessellation.html what Tessellation is] especially and what it does and how it's being used. If you're not sure check out other tutorials before going ahead or simply check the [[Distance_Based_DX11_Tesselation_-_Video#Additional_Tutorials|Additional Tutorials]] chapter.

==Tutorial==
Due to the fact that it's a complicated material function I created two video tutorials that offer step by step explanations.
Please use any material of your choice ( that has a ''Base Color'' texture, a ''Normal'' texture and a ''Displacement'' texture ) as a base for the video tutorials below. First you'll add a basic and then dynamic tesselation to this material. Check out the [[Distance_Based_DX11_Tesselation_-_Video#Project_Source|Project Source]] chapter to download the whole UE4 project if you don't have a proper material and / or textures.<br/><br/>
Basic DX11 Tessellation ( 2 / 3 )<br/>
<youtube>https://www.youtube.com/watch?v=o3L-GlYWmpc</youtube><br/>
Distance Based DX11 Tessellation ( 3 / 3 )<br/>
<youtube>https://www.youtube.com/watch?v=D6zyUI33FqA</youtube><br/>

==Material Composition==
Even though I'd still suggest watching the tutorial, here is an image of the final material.<br/><br/>
[[File:DaveTheFreak-DistanceBasedTesselation.jpeg|800px|thumb|left|Distance Based Tessellation Material]]
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To understand what the Param Values mean here is a screen illustrating the situation.<br/><br/>
[[File:DaveTheFreak-DistanceBasedTessellationExplanation.jpg|800px|thumb|left|Distance Based Tessellation Explanation]]
<br clear=all>
Minimal Distance = Distance from OBJECT to A, "Max Height" and "Iterations" with the predefined value<br>
Maximal Distance ( Fade Distance ) = Distance from A to B, at B "Max Height" and "Iterations" value is 0, transitioning/fading from A to B<br/><br/>

==Project Source==
You can download the materials of '''this and other''' tesselation tutorials listed below in an UE4 [https://github.com/XenoEgger/DynamicTesselation project from GitHub].

==Additional Tutorials==
* [https://www.youtube.com/watch?v=NX-NNyGV3oQ Advanced Materials (Instancing) Video ( 1 / 3 of '''this''' tutorial )]
* [[Tessellation_-_Video|Basic Tessellation Videos ( english and german )]]
* [https://www.youtube.com/watch?v=oMKHfiFD9Js Texture Packed Material Setup Video ( 1 / 2 with basic tesselation )]
* [https://www.youtube.com/watch?v=_Xmxt1wv1SE Advanced Tessellated Displaced Material Setup Video ( 2 / 2 with advanced tesselation )]

==Credits==
''Material created by DaveTheFreak aka David Scholze''