The WebGLRenderingContext.isShader() method of the WebGL API returns true if the passed WebGLShader is valid, false otherwise.
Syntax
GLboolean gl.isShader(shader);
Parameters
- shader
- A
WebGLShaderto check.
Return value
A GLboolean indicating whether or not the shader is valid.
Examples
Checking a shader
var canvas = document.getElementById('canvas');
var gl = canvas.getContext('webgl');
var shader = gl.createShader(gl.VERTEX_SHADER);
// ...
gl.isShader(shader);
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebGL 1.0 The definition of 'isShader' in that specification. |
Recommendation | Initial definition. |
| OpenGL ES 2.0 The definition of 'glIsShader' in that specification. |
Standard | Man page of the OpenGL API. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
isShader | Chrome Full support 9 | Edge Full support 12 | Firefox Full support 4 | IE Full support 11 | Opera Full support 12 | Safari Full support 5.1 | WebView Android Full support Yes | Chrome Android Full support 25 | Firefox Android Full support Yes | Opera Android Full support 12 | Safari iOS Full support 8 | Samsung Internet Android Full support 1.5 |
Legend
- Full support
- Full support