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---
title: WebGLRenderingContext.getProgramParameter()
slug: Web/API/WebGLRenderingContext/getProgramParameter
translation_of: Web/API/WebGLRenderingContext/getProgramParameter
---
<div>{{APIRef("WebGL")}}</div>
<p><strong><code>WebGLRenderingContext.getProgramParameter()</code></strong> 方法返回<code><a href="https://developer.mozilla.org/en-US/docs/Web/API/WebGLProgram" title="The WebGLProgram is part of the WebGL API and is a combination of two compiled WebGLShaders consisting of a vertex shader and a fragment shader (both written in GLSL).">WebGLProgram</a>的信息。</code></p>
<h2 id="语法">语法</h2>
<pre class="syntaxbox">any <var>gl</var>.getProgramParameter(<var>program</var>, <var>pname</var>);
</pre>
<h3 id="参数">参数</h3>
<dl>
<dt>program</dt>
<dd>A {{domxref("WebGLProgram")}} to get parameter information from.</dd>
<dt>pname</dt>
<dd>A {{domxref("Glenum")}} specifying the information to query. Possible values:
<ul>
<li><code>gl.DELETE_STATUS</code>: Returns a {{domxref("GLboolean")}} indicating whether or not the program is flagged for deletion.</li>
<li><code>gl.LINK_STATUS</code>: Returns a {{domxref("GLboolean")}} indicating whether or not the last link operation was successful.</li>
<li><code>gl.VALIDATE_STATUS</code>: Returns a {{domxref("GLboolean")}} indicating whether or not the last validation operation was successful.</li>
<li><code>gl.ATTACHED_SHADERS</code>: Returns a {{domxref("GLint")}} indicating the number of attached shaders to a program.</li>
<li><code>gl.ACTIVE_ATTRIBUTES</code>: Returns a {{domxref("GLint")}} indicating the number of active attribute variables to a program.</li>
<li><code>gl.ACTIVE_UNIFORMS</code>: Returns a {{domxref("GLint")}} indicating the number of active uniform variables to a program.</li>
<li>When using a {{domxref("WebGL2RenderingContext", "WebGL 2 context", "", 1)}}, the following values are available additionally:
<ul>
<li><code>gl.TRANSFORM_FEEDBACK_BUFFER_MODE</code>: Returns a {{domxref("GLenum")}} indicating the buffer mode when transform feedback is active. May be <code>gl.SEPARATE_ATTRIBS</code> or <code>gl.INTERLEAVED_ATTRIBS</code>.</li>
<li><code>gl.TRANSFORM_FEEDBACK_VARYINGS</code>: Returns a {{domxref("GLint")}} indicating the number of varying variables to capture in transform feedback mode.</li>
<li><code>gl.ACTIVE_UNIFORM_BLOCKS</code>: Returns a {{domxref("GLint")}} indicating the number of uniform blocks containing active uniforms.</li>
</ul>
</li>
</ul>
</dd>
</dl>
<h3 id="返回值">返回值</h3>
<p>Returns the requested program information (as specified with <code>pname</code>).</p>
<h2 id="例子">例子</h2>
<pre class="brush: js">gl.getProgramParameter(program, gl.DELETE_STATUS);
</pre>
<h2 id="Specifications">Specifications</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', "#5.14.9", "getProgramParameter")}}</td>
<td>{{Spec2('WebGL')}}</td>
<td>Initial definition.</td>
</tr>
<tr>
<td>{{SpecName('OpenGL ES 2.0', "glGetProgramiv.xml", "glGetProgramiv")}}</td>
<td>{{Spec2('OpenGL ES 2.0')}}</td>
<td>Man page of the (similar) OpenGL API.</td>
</tr>
<tr>
<td>{{SpecName('WebGL2', "#3.7.7", "getProgramParameter")}}</td>
<td>{{Spec2('WebGL2')}}</td>
<td>Adds new <code>pname</code> values:<br>
<code>gl.TRANSFORM_FEEDBACK_BUFFER_MODE</code>,<br>
<code>gl.TRANSFORM_FEEDBACK_VARYINGS</code>,<br>
<code>gl.ACTIVE_UNIFORM_BLOCKS</code></td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<p>{{Compat("api.WebGLRenderingContext.getProgramParameter")}}</p>
<h2 id="See_also">See also</h2>
<ul>
<li>{{domxref("WebGLRenderingContext.getShaderParameter()")}}</li>
</ul>
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