We're looking for a user researcher to understand the needs of developers and designers. Is this you or someone you know? Check out the post: https://mzl.la/2IGzdXS


The WebGLRenderingContext.isProgram() method of the WebGL API returns true if the passed WebGLProgram is valid, false otherwise.


GLboolean gl.isProgram(program);


A WebGLProgram to check.

Return value

A GLboolean indicating whether or not the program is valid.


Checking a program

var canvas = document.getElementById('canvas');
var gl = canvas.getContext('webgl');
var program = gl.createProgram();

// ...



Specification Status Comment
WebGL 1.0
The definition of 'isProgram' in that specification.
Recommendation Initial definition.
OpenGL ES 2.0
The definition of 'glIsProgram' in that specification.
Standard Man page of the OpenGL API.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support912411125.1
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes25 Yes Yes128.1 Yes

See also

Document Tags and Contributors

Contributors to this page: fscholz, nmve, teoli
Last updated by: fscholz,