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