Your system asks for reduced motion, so VFX-JS draws nothing. Demos on this site show plain HTML.

Type

EffectTextureSource

vfx-js/src/types.ts:691 ↗
import type { EffectTextureSource } from "@vfx-js/core";

Source types accepted by EffectContext.wrapTexture.

type EffectTextureSource =
    | WebGLTexture
    | HTMLImageElement
    | HTMLCanvasElement
    | HTMLVideoElement
    | ImageBitmap
    | OffscreenCanvas