Unreal Engine 4 Scripting with C++ Cookbook

Shader code via Custom node

If you prefer code to diagrammatic blocks, you're in luck. You can write your own HLSL code to deploy to the GPU for the shading of some vertices in your project. We can construct Custom nodes that simply contain math code working on named variables to perform some generic computation. In this recipe, we'll write a custom math function to work with.

Getting ready

You need a material shader, and a general mathematical function to implement. As an example, we'll write a Custom node that returns the square of all inputs.

How to do it...

1. In order to create a custom material expression, simply right-click anywhere on the canvas, and select Custom.
2. With your new Custom block selected, go to the Details panel on the left side of ...