WebGLRenderingContext: isProgram() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Note: This feature is available in Web Workers.
The WebGLRenderingContext.isProgram() method of the WebGL API returns true if the passed WebGLProgram is valid, false otherwise.
Syntax
js
isProgram(program) Parameters
program-
A
WebGLProgramto check.
Return value
A GLboolean indicating whether or not the program is valid.
Examples
Checking a program
js
const canvas = document.getElementById("canvas"); const gl = canvas.getContext("webgl"); const program = gl.createProgram(); // … gl.isProgram(program); Specifications
| Specification |
|---|
| WebGL Specification # 5.14.9 |