# Interactive Ink Shader Background

> Interactive WebGL ink shader background for React: crimson ink suspended in black and lit like anodized metal. Move the pointer to stir it and click to drop ink that rings outward; when idle the light drifts on its own. Raw WebGL2 with no three.js, React is the only import, and content sits on top as children.

- Author: [Kedhareswer Naidu](https://21st.dev/@kedhareswer)
- License: mit
- Tags: Shader, WebGL, Background, Fluid, Interactive
- Live preview: https://21st.dev/@kedhareswer/components/anodized-ink

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/kedhareswer/anodized-ink?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/shader.md