@thi.ng/webgl/readpixels.js

WebGL & GLSL abstraction layer

import { FBO } from "./fbo.js";
const readPixels = (gl, x, y, w, h, format, type, out) => {
  gl.readPixels(x, y, w, h, format, type, out);
  return out;
};
const readTexture = (gl, tex, format, type, out) => {
  const fbo = new FBO(gl, { tex: [tex] });
  fbo.bind();
  gl.readPixels(0, 0, tex.size[0], tex.size[1], format, type, out);
  fbo.unbind();
  fbo.release();
  return out;
};
export {
  readPixels,
  readTexture
};