Take each pixel's angle, wrap it into a single wedge with mod, and mirror the wedge with abs. Every pixel now reads from the same slice of the pattern, so anything you draw there, here plain noise through a colour wheel, comes out with perfect radial symmetry.

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Live
rive-shader-library.revIn the Scripting Course

Kaleidoscope on its own artboard in the library file, with the ShaderQuad node and the WGSL, Inputs for Segments, Speed. Copy the artboard into any Rive file.

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Ripple
Pixelate
Chromatic
Free Rive file

Noise, as a Rive file, on us

The Noise shader with the GPU Canvas node wired and the WGSL inside. Drop it into any Rive file and see how a shader lives there.

The other 27, in the course

Every shader here, as a ready-to-drop Rive file

Play with all of them here. The library file, every shader on its own artboard, comes with the Scripting Course, next to the lessons and the Space Game it belongs to.