Worn Out Etch

RenderMan Stylized Looks Presets | Worn Out Etch

This style suggests an etching print where time has left its mark. It features textured lines subtly interrupted and varying in thickness, creating a sense of age and a hint of forgotten stories. These imperfections add a touch of realism to the stylized look.

This look is identical to the Wooden Etch look. The addition of canvas background to the etch layers results in this weathered look without changing any of the underlying parameters of Wooden Etch.

1. Scene Setup

Wireframe 3D model of a teapot viewed from above on a gray grid background.

The scene setup is composed of a single light source with basic material applied for each object.

2. Material Setup

The PxrManifold arrangement along with the two fractal nodes is the standard setup for all of my stylized shading looks. And they are the standard for all of the artistic presets in this pack. I might add additional nodes such as the bump map to control the PxrStylizedToon output and various fractal or worley nodes to control the line width and line masking depending on the desired look.

For Maya I have created scripts that either plug a PxrManifold2D into an existing PxrStylizedControl or allows me to call out the attribute of PxrStylizedControl or PxrManifold2D from an object as I tweak those controls constantly while developing the looks. You can download these scripts from this github repo.

The color palette is light summer pastel.

The shading network is controlled from the PxrStylizedControl node with:

PxrManifold2D as I’ll be driving the mapping of the brushes using the surface UV, and also to fine tune the the frequency of the hatching for individual objects.
A PxrFractal nodes that are used to distort the line-work on U and V.
A PxrFractal is plugged into the link thickness t to vary the line width of our line art.

3. AOVs and LPEs

No Additional AOVs or LPEs are required other than the default Stylized Looks AOVs.

4. Stylized Layers

The color palette for this style summer colours.

To achieve the woodcutting looks the display filters are composed of the following categories layered in order:

1x PxrStylizedToon filter to produce the desired toon stepping AOV. It will be used as a signal for specific hatching filters downstream.
5x PxrStylizedHatching filters produce describe the etching brush look.
1x PxrStylizedLines filters to produce the desired line-work.
1x PxrStylizedHatching filter for effects.
1x PxrStylizedLines filter for effects.

These layers are showcased and described below:

0. Beauty Pass

1. PxrStylizedToon - Shading

2. PxrStylizedHatching - Etch Wash - Fill

3. PxrStylizedHatching - Etch Primer - BW Texture

4. PxrStylizedHatching - Crayon Texture - Initial Color

5. PxrStylizedHatching - Etch Color

The canvas is applied at this hatching layer and is carried over downstream.

Compare this filter to the same one from Wooden Etch but without the Canvas and you’ll start to see how the medium/background the brush is drawn on top affect the coverage of the brushes.