webgl-particle-galaxy
A real-time particle galaxy — tens of thousands of additive-blended GPU points spiraling around a bright core, their orbits solved entirely in the vertex shader (from gl_VertexID), so the whole cloud draws in one call. Rendered as a single self-contained `index.html`. Use when the brief asks for a "particle field", "particle galaxy", "point cloud", "instanced points", "starfield", "GPU particles", or a swirling generative point system. Open Design serves this in powered-preview mode so the GPU stack actually runs.
Profile →npx skills add nexu-io/open-design --skill webgl-particle-galaxy --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Particle Galaxy Skill Produce a single self-contained `index.html` that renders a real-time particle system full-screen, with a clean typographic overlay on top. The signature move: **compute each particle's position on the GPU** so the CPU never loops over particles. ## Why this is a powered artifact Open Design detects `getContext('webgl2')` and renders this file in **powered preview** — a cross-origin-isolated iframe with `allow-same-origin`. The full GPU pipeline is available; you do not need to work around the opaque sandbox. ## Resource map ``` webgl-particle-galaxy/ ├── SKILL.md ← you're reading this └── example.html ← a working 50,000-point WebGL2 galaxy (READ FIRST) ``` ## Workflow ### Step 0 — Read the reference Read `example.html` end to end. Note the shape: **no vertex buffer** — the vertex shader reads `gl_VertexID`, hashes it into a stable per-particle seed, and derives a log-spiral orbit with an inner-fast rotation curve. Points are drawn with `gl.drawArrays(gl.POINTS, 0, N)` in one call, additive-blended (`blendFunc(ONE, ONE)` with premultiplied color) so overlapping points glow. ### Step 1 — Pick the motion Choose a field the vertex shader can express cheaply fro
- Why this is a powered artifact
- Resource map
- Workflow
- Step 0 — Read the reference
- Step 1 — Pick the motion
- Step 2 — Build index.html
- Step 3 — Overlay + brand
- Step 4 — Self-review (P0)
What does the webgl-particle-galaxy skill do?
A real-time particle galaxy — tens of thousands of additive-blended GPU points spiraling around a bright core, their orbits solved entirely in the vertex shader (from gl_VertexID), so the whole cloud draws in one call. Rendered as a single self-contained `index.html`. Use when the brief asks for a "particle field", "particle galaxy", "point cloud", "instanced points", "starfield", "GPU particles", or a swirling generative point system. Open Design serves this in powered-preview mode so the GPU stack actually runs.
How do I install it?
Run `npx skills add nexu-io/open-design --skill webgl-particle-galaxy --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From nexu-io/open-design, a repository with 83,577 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.