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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/api/webglrenderingcontext/drawingbufferheight | |
parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
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diff --git a/files/zh-cn/web/api/webglrenderingcontext/drawingbufferheight/index.html b/files/zh-cn/web/api/webglrenderingcontext/drawingbufferheight/index.html new file mode 100644 index 0000000000..4fbe5ff28a --- /dev/null +++ b/files/zh-cn/web/api/webglrenderingcontext/drawingbufferheight/index.html @@ -0,0 +1,65 @@ +--- +title: WebGLRenderingContext.drawingBufferHeight +slug: Web/API/WebGLRenderingContext/drawingBufferHeight +tags: + - API + - WebGL + - WebGLRenderingContext + - 参考 + - 只读 + - 属性 +translation_of: Web/API/WebGLRenderingContext/drawingBufferHeight +--- +<div>{{APIRef("WebGL")}}</div> + +<p><code><strong>WebGLRenderingContext.drawingBufferHeight</strong></code> 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 {{HTMLElement("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。</p> + +<h2 id="语法">语法</h2> + +<pre class="syntaxbox"><var><em>gl</em></var>.drawingBufferHeight;</pre> + +<h2 id="示例">示例</h2> + +<p>指定 {{HTMLElement("canvas")}} 元素:</p> + +<pre class="brush: html"><canvas id="canvas"></canvas> +</pre> + +<p>你可以通过下面几行代码来获取绘图缓冲区的高度:</p> + +<pre class="brush: js">var canvas = document.getElementById("canvas"); +var gl = canvas.getContext("webgl"); +gl.drawingBufferHeight; // 150 +</pre> + +<h2 id="规范">规范</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Specification</th> + <th scope="col">Status</th> + <th scope="col">Comment</th> + </tr> + <tr> + <td>{{SpecName("WebGL", "#DOM-WebGLRenderingContext-drawingBufferHeight", "WebGLRenderingContext.drawingBufferHeight")}}</td> + <td>{{Spec2("WebGL")}}</td> + <td>初始定义</td> + </tr> + </tbody> +</table> + +<h2 id="浏览器兼容性">浏览器兼容性</h2> + +<div class="hidden"> +<p>此页面上的兼容性表格由结构化数据生成。如果你想贡献数据,可以看看 <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a>并向我们发送 pull request.</p> +</div> + +<p>{{Compat("api.WebGLRenderingContext.drawingBufferHeight")}}</p> + +<h2 id="相关链接">相关链接</h2> + +<ul> + <li>{{domxref("WebGLRenderingContext.drawingBufferWidth")}}</li> + <li>{{domxref("WebGLRenderingContext.viewport()")}}</li> +</ul> |