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toygl

v0.0.3

Published

A toy-level WebGL library.

Downloads

5

Readme

ToyGL

Release Deploy static content to Pages Deploy static content to Pages

A low level WebGL library that wraps the WebGL API into commands and state. Before using this library, you need to understand the basics of WebGL, such as vertex attribute, uniform, GLSL.

Getting started

Draw a triangle:

<script src="dist/toygl.js"></script>
<script>
  const gl = ToyGL.createContext();
  document.body.appendChild(gl.canvas);

  const vs = `
    attribute vec2 a_position;
    attribute vec3 a_color;
    varying vec3 v_color;
    void main() {
      gl_Position = vec4(a_position, 0, 1);
      v_color = a_color;
    }
  `;
  const fs = `
    precision highp float;
    varying vec3 v_color;
    void main() {
      gl_FragColor = vec4(v_color, 1);
    }
  `;

  function render(ms) {
    requestAnimationFrame(render);

    ToyGL.setState(gl, {
      viewport: [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight],
    });

    ToyGL.clear(gl, {
      color: [0, 0, 0, 1]
    });

    ToyGL.draw(gl, {
      vs: vs,
      fs: fs,
      attributes: {
        a_position: [
         -0.6, -0.4,
          0.6, -0.4,
            0,  0.6,
        ],
        a_color: [
          1, 0, 0,
          0, 1, 0,
          0, 0, 1,
        ]
      },
      count: 3,
    });
  }

  requestAnimationFrame(render);
</script>

Live demo of above example. See examples folder for more examples.

Documentation

See https://bbbbx.github.io/toy.gl/docs/.

Build manually

install dependencies:

npm install

build the bundles:

npm run build

the result will be placed on dist folder.

License

MIT