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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
commit33058f2b292b3a581333bdfb21b8f671898c5060 (patch)
tree51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/api/webglrenderingcontext/getsupportedextensions
parent8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff)
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+---
+title: WebGLRenderingContext.getSupportedExtensions()
+slug: Web/API/WebGLRenderingContext/getSupportedExtensions
+translation_of: Web/API/WebGLRenderingContext/getSupportedExtensions
+---
+<div>{{APIRef("WebGL")}}</div>
+
+<p>这个 <strong><font face="Courier New">WebGLRenderingContext.getSupportedExtensions()</font></strong> 方法返回一个所有的支持<a href="/en-US/docs/Web/API/WebGL_API"><u><font color="#0066cc">WebGL</font></u></a> 扩展的列表。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox"><var><em>gl</em></var>.getSupportedExtensions();</pre>
+
+<h3 id="返回值">返回值</h3>
+
+<p>一个字符串 {{jsxref("Array")}} 数组，包含所有支持 WebGL 的扩展。</p>
+
+<h2 id="示例代码">示例代码</h2>
+
+<pre class="brush: js">var canvas = document.getElementById("canvas");
+gl = canvas.getContext("webgl");
+
+var extensions = gl.getSupportedExtensions();
+// Array [ "ANGLE_instanced_arrays", "EXT_blend_minmax", ... ]
+</pre>
+
+<p>浏览 {{domxref("WebGLRenderingContext.getExtension()")}} 方法得到一个特定的扩展对象。</p>
+
+<h2 id="WebGL_扩展">WebGL 扩展</h2>
+
+<p>所有WebGL API 扩展都被注册在 <a href="https://www.khronos.org/registry/webgl/extensions/">WebGL Extension Registry</a> 中。当前的扩展是：</p>
+
+<p>{{page("en-US/docs/Web/API/WebGL_API", "Extension_interfaces")}}</p>
+
+<h2 id="规格说明书">规格说明书</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">规格说明书</th>
+ <th scope="col">状态</th>
+ <th scope="col">注释</th>
+ </tr>
+ <tr>
+ <td>{{SpecName("WebGL", "#5.14.14", "WebGLRenderingContext.getSupportedExtensions")}}</td>
+ <td>{{Spec2("WebGL")}}</td>
+ <td>Initial definition.</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<p>{{CompatibilityTable}}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Feature</th>
+ <th>Chrome</th>
+ <th>Firefox (Gecko)</th>
+ <th>Internet Explorer</th>
+ <th>Opera</th>
+ <th>Safari</th>
+ </tr>
+ <tr>
+ <td>Basic support</td>
+ <td>9</td>
+ <td>{{CompatGeckoDesktop("2.0")}}</td>
+ <td>11</td>
+ <td>12</td>
+ <td>5.1</td>
+ </tr>
+ <tr>
+ <td><code>ANGLE_instanced_arrays</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("33.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_blend_minmax</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("33.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_color_buffer_half_float</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("30.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_disjoint_timer_query</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("41.0")}} [1]</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_frag_depth</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("30.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_sRGB</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("28.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_shader_texture_lod</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("34.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_texture_filter_anisotropic</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("17.0")}} [2]</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_element_index_uint</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("24.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_standard_derivatives</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("10.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_texture_float</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("6.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_texture_float_linear</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("24.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_texture_half_float</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("29.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_texture_half_float_linear</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("30.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_vertex_array_object</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("25.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_color_buffer_float</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("30.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_compressed_texture_atc</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("18.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_compressed_texture_etc1</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("30.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_compressed_texture_pvrtc</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("18.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_compressed_texture_s3tc</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("15.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_debug_renderer_info</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("19.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_debug_shaders</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("30.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_depth_texture</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("17.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_draw_buffers</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("28.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_lose_context</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatGeckoDesktop("19.0")}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Feature</th>
+ <th>Android</th>
+ <th>Chrome for Android</th>
+ <th>Firefox Mobile (Gecko)</th>
+ <th>IE Mobile</th>
+ <th>Opera Mobile</th>
+ <th>Safari Mobile</th>
+ </tr>
+ <tr>
+ <td>Basic support</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>25</td>
+ <td>{{CompatGeckoMobile("2.0")}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>12</td>
+ <td>8.1</td>
+ </tr>
+ <tr>
+ <td><code>ANGLE_instanced_arrays</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_blend_minmax</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_color_buffer_half_float</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_disjoint_timer_query</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_frag_depth</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_sRGB</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_shader_texture_lod</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>EXT_texture_filter_anisotropic</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_element_index_uint</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_standard_derivatives</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_texture_float</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_texture_float_linear</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_texture_half_float</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_texture_half_float_linear</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>OES_vertex_array_object</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_color_buffer_float</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_compressed_texture_atc</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_compressed_texture_etc1</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_compressed_texture_pvrtc</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_compressed_texture_s3tc</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_debug_renderer_info</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_debug_shaders</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_depth_texture</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_draw_buffers</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ <tr>
+ <td><code>WEBGL_lose_context</code></td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<p>[1] Toggling the <code>webgl.enable-draft-extensions</code> preference in about:config is required.</p>
+
+<p>[2] This was prefixed as <code>MOZ_EXT_texture_filter_anisotropic</code> in prior versions.</p>
+
+<h2 id="浏览其他相关资源">浏览其他相关资源</h2>
+
+<ul>
+ <li>{{domxref("WebGLRenderingContext.getExtension()")}}</li>
+ <li><a href="http://webglreport.com">webglreport.com</a></li>
+</ul>
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2026-01-27 17:03:29 +0000