WebGLRenderingContext: isShader() 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.isShader() method of the WebGL API returns true if the passed WebGLShader is valid, false otherwise.
Syntax
js
isShader(shader) Parameters
shader-
A
WebGLShaderto check.
Return value
A GLboolean indicating whether or not the shader is valid.
Examples
Checking a shader
js
const canvas = document.getElementById("canvas"); const gl = canvas.getContext("webgl"); const shader = gl.createShader(gl.VERTEX_SHADER); // … gl.isShader(shader); Specifications
| Specification |
|---|
| WebGL Specification # 5.14.9 |