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    WebGLRenderingContext.isProgram()

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

    Syntax

    GLboolean gl.isProgram(program);

    Parameters

    program
    A WebGLProgram to check.

    Return value

    A GLboolean indicating whether or not the program is valid.

    Examples

    Checking a program

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

// ...

gl.isProgram(program);

    Specifications

    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

    Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
    Basic support 9 12 4.0 (2.0) 11 12 5.1

    See also

    Document Tags and Contributors

    Tags: 
     Contributors to this page: fscholz
     Last updated by: fscholz,