@thi.ng/webgl/rbo.js

WebGL & GLSL abstraction layer

import { error } from "./error.js";
class RBO {
  gl;
  buffer;
  format;
  width;
  height;
  constructor(gl, opts) {
    this.gl = gl;
    this.buffer = gl.createRenderbuffer() || error("error creating RBO");
    this.configure(opts);
  }
  bind() {
    this.gl.bindRenderbuffer(this.gl.RENDERBUFFER, this.buffer);
    return true;
  }
  unbind() {
    this.gl.bindRenderbuffer(this.gl.RENDERBUFFER, null);
    return true;
  }
  release() {
    this.gl.deleteRenderbuffer(this.buffer);
    delete this.buffer;
    return true;
  }
  configure(opts, unbind = true) {
    const gl = this.gl;
    this.bind();
    this.format = opts.format || gl.DEPTH_COMPONENT16;
    this.width = opts.width;
    this.height = opts.height;
    gl.renderbufferStorage(
      gl.RENDERBUFFER,
      opts.format || gl.DEPTH_COMPONENT16,
      opts.width,
      opts.height
    );
    return unbind ? this.unbind() : true;
  }
}
const defRBO = (gl, opts) => new RBO(gl, opts);
export {
  RBO,
  defRBO
};