Note: This feature is available in Web Workers.
The WebGLRenderingContext.isRenderbuffer() method of the WebGL API returns true if the passed WebGLRenderbuffer is valid and false otherwise.
isRenderbuffer(renderbuffer)renderbufferA WebGLRenderbuffer to check.
A GLboolean indicating whether or not the renderbuffer is valid.
const canvas = document.getElementById("canvas");
const gl = canvas.getContext("webgl");
const renderbuffer = gl.createRenderbuffer();
gl.isRenderbuffer(renderbuffer);