How to Create Stylized Rainbow Effect in Arnold

In this article, Fox Renderfarm, a renowned render farm, and cloud rendering provider in the computer graphics business, will present an Arnold tutorial for the stylized rainbow effect.

Process of Creating Stylized Rainbow Effect in Arnold

Loading any model and applying an AiStandardSurface material.

Create a DomeLight and add an HDR image.

Go back to AiStandardSurface and adjust the Metalness to 1, then render.

Adjust the Weight to 1 to enable Coat, and add an aiRampRgb node to Color.

Enter this node and assign red, green, and blue colors to the Selected Color. Then render again.

Add an aiFacingRatio node to the Input.

And change the Type to Custom.

You can try adjusting the Bias and Gain parameters inside the aiFacingRatio node to see how it affects the result.

You can also add an aiColorCorrect node between aiRampRgb and AiStandardSurface to introduce more adjustment variations.

If you want to add even more variation, you can add an aiCellNoise node or other nodes to the HueShift.

At this point, you can connect the outColorR to the hueShift in the Connection.

This concludes the main part of the tutorial. I hope you found it useful. To enhance the rendering performance of Arnold rendering, you may consider using cloud render farm services, such as Fox Renderfarm, to accelerate the rendering of your project.

Source: Thepoly