Noise stretched wide and short is the curtain. A smoothstep on y, offset by that same noise, decides where the curtain starts and fades, so its lower edge waves. Green at the bottom of the noise range, violet at the top, over a near-black sky.

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Live
rive-shader-library.revIn the Scripting Course

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

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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.