Using the HalfTone OSL Shader with Toon - Arnold for Katana

This short tutorial shows how it is possible to create a halftone shading effect using an OSL shader connected to the Toon shader. Thanks to Zap Andersson for this shader and for the help with this tutorial.

• Start off by downloading the Halftone shader from the above link.
• Assign a Toon shader to your model.
• Create an OSL shader and import/compile the Halftone OSL shader within it. Once it has compiled you should see the Halftone OSL attributes as values and sliders in the OSL shader.
• Connect the OSL shader to the Base Tonemap attribute of the Toon shader.
• You can control the halftone shading effect by connecting a black and white ramp (U/V) to the Input value of the Halftone OSL shader.

Without ramp	Ramp -> Input Value of Halftone

That's it! Have fun experimenting with different scale values and ramps to create different effects.