The WebGLRenderingContext.isProgram() method of the WebGL API returns true if the passed WebGLProgram is valid, false otherwise.
GLboolean gl.isProgram(program);
WebGLProgram to check.A GLboolean indicating whether or not the program is valid.
var canvas = document.getElementById('canvas');
var gl = canvas.getContext('webgl');
var program = gl.createProgram();
// ...
gl.isProgram(program);
| 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. |
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 9 | 12 | 4 | 11 | 12 | 5.1 |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
|---|---|---|---|---|---|---|---|
| Basic support | Yes | 25 | Yes | Yes | 11 | 12 | 8.1 |
WebGLRenderingContext.createProgram()WebGLRenderingContext.deleteProgram()WebGLRenderingContext.linkProgram()WebGLRenderingContext.useProgram()WebGLRenderingContext.validateProgram()WebGLRenderingContext.getProgramParameter()WebGLRenderingContext.getProgramInfoLog()
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https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/isProgram