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

See also

• WebGLRenderingContext.createProgram()
• WebGLRenderingContext.deleteProgram()
• WebGLRenderingContext.linkProgram()
• WebGLRenderingContext.useProgram()
• WebGLRenderingContext.validateProgram()
• WebGLRenderingContext.getProgramParameter()
• WebGLRenderingContext.getProgramInfoLog()