WebGLRenderingContext.drawingBufferHeight

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.

WebGLRenderingContext.drawingBufferHeight 只读属性,指示当前绘图缓冲区的实际高度。它应当匹配与绘图上下文相关联的 <canvas> 元素的高度属性,如果实现未能提供所要求的高度,其值将有所不同。

语法

gl.drawingBufferHeight;

示例

指定 <canvas> 元素:

html
<canvas id="canvas"></canvas>

你可以通过下面几行代码来获取绘图缓冲区的高度:

js
var canvas = document.getElementById("canvas");
var gl = canvas.getContext("webgl");
gl.drawingBufferHeight; // 150

规范

Specification
WebGL Specification
# DOM-WebGLRenderingContext-drawingBufferHeight

浏览器兼容性

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相关链接