WebGLRenderingContext:isProgram() 方法

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

WebGL APIWebGLRenderingContext.isProgram() 方法将在传递的 WebGLProgram 参数有效时返回 true,否则返回 false

语法

js
isProgram(program)

参数

program

要检查的 WebGLProgram

返回值

一个表示程序(program)是否有效的 GLboolean 值。

示例

检查 program

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

// …

gl.isProgram(program);

规范

Specification
WebGL Specification
# 5.14.9

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
isProgram

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

参见