WebGLRenderingContext.isShader()

WebGL API 中的 WebGLRenderingContext.isShader() 方法,在传入的 WebGLShader 有效时返回 true ,否则返回 false

语法

GLboolean gl.isShader(shader);

参数

shader
需要校验的 WebGLShader 

返回值

用来表明 shader 是否有效的 GLboolean 对象

示例

校验一个 Shader

var canvas = document.getElementById('canvas');
var gl = canvas.getContext('webgl');
var shader = gl.createShader(gl.VERTEX_SHADER);

// ...

gl.isShader(shader);

规范

Specification Status Comment
WebGL 1.0
isShader
Recommendation Initial definition.
OpenGL ES 2.0
glIsShader
Standard Man page of the OpenGL API.

浏览器兼容性

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
isShaderChrome Full support 9Edge Full support 12Firefox Full support 4IE Full support 11Opera Full support 12Safari Full support 5.1WebView Android Full support YesChrome Android Full support 25Edge Mobile Full support YesFirefox Android Full support YesOpera Android Full support 12Safari iOS Full support 8.1Samsung Internet Android Full support Yes

Legend

Full support  
Full support

参阅

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