Published
Edited
Mar 22, 2021
createREGL = require("regl")
canvas = html`<canvas width="960" height="300">`
// Calling the regl module with no arguments creates a full screen canvas and
// WebGL context, and then uses this context to initialize a new REGL instance
regl = createREGL({canvas: canvas})
image = FileAttachment("spotlight-poi2.png").image()
texture = regl.texture({
data: image,
})
{
const drawImage = regl({
frag: `
precision mediump float;
uniform sampler2D texture;
varying vec2 uv;
void main () {
gl_FragColor = texture2D(texture, uv);
}`,
vert: `
precision mediump float;
attribute vec2 position;
varying vec2 uv;
void main () {
uv = vec2(position);
gl_Position = vec4(1.0 - 2.0 * position, 0, 1);
}`,
attributes: {
position: [-2, 0, 0, -2, 2, 2]
},
uniforms: {
texture: texture
},
count: 3
})
drawImage()
}
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