Files
hyperframes/packages/shader-transitions
ukimsanov 41b4017273 docs(shader-transitions): clarify allowTaint caveat in capture comment
Address Copilot review comment on #456: the old `allowTaint` doc comment
said the resulting canvas is "still usable as a WebGL texture via
gl.texImage2D (no pixel read-back required)", which is wrong. A tainted
canvas CANNOT be uploaded to WebGL — the spec requires SecurityError on
non-origin-clean sources with no opt-out. That's exactly what we observe
in Safari + SVG-filter compositions, and what hyper-shader.ts's catch
handler now handles via CSS crossfade.

Update the comment to correctly describe the flag's effect: it only
moves the failure point from html2canvas to texImage2D; the end-user
UX is the same (smooth CSS fade in either case). The flag remains
defensively correct for the non-taint branches where it genuinely
helps (cross-origin images with `Access-Control-Allow-Origin`).

No code change — comment only.

Made-with: Cursor
2026-04-23 16:20:32 -04:00
..
2026-04-23 01:13:37 -04:00

@hyperframes/shader-transitions

WebGL shader transitions for HyperFrames compositions. Renders GPU-accelerated scene-to-scene transitions using fragment shaders, driven by GSAP timelines.

Install

npm install @hyperframes/shader-transitions

Or load directly via CDN:

<script src="https://cdn.jsdelivr.net/npm/@hyperframes/shader-transitions/dist/index.global.js"></script>

Usage

import { init } from "@hyperframes/shader-transitions";

const tl = init({
  bgColor: "#0a0a0a",
  accentColor: "#ff6b2b",
  scenes: ["scene-1", "scene-2", "scene-3"],
  transitions: [
    { time: 3, shader: "domain-warp", duration: 0.8 },
    { time: 8, shader: "light-leak", duration: 0.7 },
  ],
});

The init() function captures each scene to a WebGL texture at transition time, crossfades between them using the selected shader, and returns a GSAP timeline. If WebGL is unavailable, it falls back to hard cuts.

With an existing timeline

Pass your own GSAP timeline to layer transitions onto it:

const tl = gsap.timeline({ paused: true });
// ... add your scene animations ...

init({
  bgColor: "#000",
  scenes: ["intro", "demo", "outro"],
  transitions: [
    { time: 5, shader: "cinematic-zoom" },
    { time: 12, shader: "glitch", duration: 0.5 },
  ],
  timeline: tl,
});

Available shaders

Shader Description
domain-warp Organic noise-based warp with glowing edge
ridged-burn Ridged noise burn with sparks and heat glow
whip-pan Horizontal motion blur simulating a fast camera pan
sdf-iris Circular iris wipe with glowing ring edge
ripple-waves Concentric ripple distortion radiating from center
gravitational-lens Warping gravity well with chromatic aberration
cinematic-zoom Radial zoom blur with chromatic fringing
chromatic-split RGB channel separation expanding from center
glitch Digital glitch with block displacement and scanlines
swirl-vortex Spiral rotation with noise-based warping
thermal-distortion Heat shimmer rising from the bottom
flash-through-white Flash to white then reveal the next scene
cross-warp-morph Noise-driven morph blending both scenes
light-leak Warm cinematic light leak with lens flare

API

init(config): GsapTimeline

Option Type Required Description
bgColor string yes Fallback background color (hex) for scene capture. Use the composition's body/canvas background — individual scenes set their own background-color via CSS.
accentColor string no Accent color (hex) for shader glow effects
scenes string[] yes Element IDs of each scene, in order
transitions TransitionConfig[] yes Transition definitions (see below)
timeline GsapTimeline no Existing timeline to attach transitions to
compositionId string no Override the data-composition-id for timeline registration

TransitionConfig

Option Type Default Description
time number Start time in seconds
shader ShaderName Shader name from the table above
duration number 0.7 Transition duration in seconds
ease string "power2.inOut" GSAP easing function

SHADER_NAMES

Array of all available shader name strings, useful for validation or building UIs.

import { SHADER_NAMES } from "@hyperframes/shader-transitions";
// ["domain-warp", "ridged-burn", "whip-pan", ...]

Distribution

Format File Use case
ESM dist/index.js Bundlers (Vite, webpack, etc.)
CJS dist/index.cjs Node.js / require()
IIFE dist/index.global.js <script> tag, CDN (global: HyperShader)

All formats include source maps. TypeScript definitions included.

License

MIT