Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

In this tutorial, we will demonstrate the best practices for rendering a vector displacement from C4D with Arnold. We will create some nose geometry using the C4D Sculpting tools. We will then bake this geometry into a vector displacement map from C4D and render it using C4DtoA with the correct settings.

The scene (R18) can be downloaded here.

 


The tutorial is broken up into the following stages:

...

  • Start off by creating a plane and press 'C' to turn it into a polygon mesh. Go into the Sculpting layout in C4D and subdivide the level 5 times.
Center

...


  • Select the Pull tool and load the Brush Preset called 'face_nose'.
Center

...


  • Increase the Pressure to around 8000% and click and drag in the center of the plane until the nose fills the plane. Select the Grab tool, enable X(YZ) Symmetry and increase the brush size to around 130%. Grab the tip of the nose and pull it down so that it overhangs. 

...

The following settings are used when baking the map using object space.

Center

...


Anchor
Vector Displacement Shader
Vector Displacement Shader

...

Info

If the skin shader is too nosey noisy, you can try increasing the number of SSS samples.

  • Create a vector_displacement shader and connect it to the Arnold Displacement port. Change the Vector encoding to signed. The Vector space should be tangent because this is the setting that we baked the vector displacement map with. Change the Order from XYZ to XZY.
  • Create an image shader and open the vector displacement texture that we baked earlier. Connect it to the input of the vector_displacement shader. 
  • Increase the Scale to around 1.4.
Center

'Vector space' of vector_displacement is set to 'tangent'. The order is 'XZY'. Flip Z is enabled.

...


Below you can see the difference when rendering with and without Flip Z enabled.

...

Center

Original sculpt (left). Vector displacement (right).

 

 

...




Center

Privacy settings / Do not sell my personal information / Privacy/Cookies