@aidinabedi/playcanvas
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PlayCanvas WebGL game engine
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<div class='sidebarToggle'><span></span>Class List</div>
<main class="cls">
<h1>pc.IndexBuffer</h1>
<p><p>An index buffer is the mechanism via which the application specifies primitive
index data to the graphics hardware.</p></p>
<pre><code class="javascript">// Create an index buffer holding 3 16-bit indices
// The buffer is marked as static, hinting that the buffer will never be modified
var indexBuffer = new pc.IndexBuffer(graphicsDevice, pc.INDEXFORMAT_UINT16, 3, pc.BUFFER_STATIC);</code></pre>
<!-- summary -->
<h1>Summary</h1>
<!--type definitions-->
<!--static properties-->
<!--static methods-->
<!--properties-->
<!--methods-->
<h3>Methods</h3>
<table class="properties">
<tr>
<td><a href="#destroy">destroy</a></td><td><p>Frees resources associated with this index buffer.</td>
</tr>
<tr>
<td><a href="#getFormat">getFormat</a></td><td><p>Returns the data format of the specified index buffer.</td>
</tr>
<tr>
<td><a href="#getNumIndices">getNumIndices</a></td><td><p>Returns the number of indices stored in the specified index buffer.</td>
</tr>
<tr>
<td><a href="#lock">lock</a></td><td><p>Gives access to the block of memory that stores the buffer's indices.</td>
</tr>
<tr>
<td><a href="#unlock">unlock</a></td><td><p>Signals that the block of memory returned by a call to the lock function is
ready to be given to the graphics hardware.</td>
</tr>
</table>
<!--events-->
<h1>Details</h1>
<!--type definitions-->
<!--static members-->
<!--static methods-->
<h2>Constructor</h2>
<!-- Constructor -->
<div id="IndexBuffer">
<h3 class="methodname">IndexBuffer(graphicsDevice, format, numIndices, [usage], [initialData]) <a class="font-icon" href="#IndexBuffer"></a></h3>
<p><p>Creates a new index buffer.</p></p>
<pre><code class="javascript">// Create an index buffer holding 3 16-bit indices
// The buffer is marked as static, hinting that the buffer will never be modified
var indexBuffer = new pc.IndexBuffer(graphicsDevice, pc.INDEXFORMAT_UINT16, 3, pc.BUFFER_STATIC);</code></pre>
<h4>Parameters</h4>
<table>
<tr>
<td>graphicsDevice</td><td><a href="pc.GraphicsDevice.html">pc.GraphicsDevice</a></td><td><p>The graphics device used to manage this index buffer.</p></td>
</tr>
<tr>
<td>format</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></td><td><p>The type of each index to be stored in the index buffer (see pc.INDEXFORMAT_*).</p></td>
</tr>
<tr>
<td>numIndices</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></td><td><p>The number of indices to be stored in the index buffer.</p></td>
</tr>
<tr>
<td>usage</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></td><td><p>The usage type of the vertex buffer (see pc.BUFFER_*).</p></td>
</tr>
<tr>
<td>initialData</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer">ArrayBuffer</a></td><td><p>Initial data.</p></td>
</tr>
</table>
</div>
<!--properties-->
<!--methods-->
<h2>Methods</h2>
<div id="destroy">
<h3 class="methodname">destroy() <a class="font-icon" href="#destroy"></a></h3>
<p><p>Frees resources associated with this index buffer.</p></p>
</div>
<div id="getFormat">
<h3 class="methodname">getFormat() <a class="font-icon" href="#getFormat"></a></h3>
<p><p>Returns the data format of the specified index buffer.</p></p>
<h4>Returns</h4>
<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a> <p>The data format of the specified index buffer (see pc.INDEXFORMAT_*).</p>
</div>
<div id="getNumIndices">
<h3 class="methodname">getNumIndices() <a class="font-icon" href="#getNumIndices"></a></h3>
<p><p>Returns the number of indices stored in the specified index buffer.</p></p>
<h4>Returns</h4>
<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a> <p>The number of indices stored in the specified index buffer.</p>
</div>
<div id="lock">
<h3 class="methodname">lock() <a class="font-icon" href="#lock"></a></h3>
<p><p>Gives access to the block of memory that stores the buffer's indices.</p></p>
<h4>Returns</h4>
<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer">ArrayBuffer</a> <p>A contiguous block of memory where index data can be written to.</p>
</div>
<div id="unlock">
<h3 class="methodname">unlock() <a class="font-icon" href="#unlock"></a></h3>
<p><p>Signals that the block of memory returned by a call to the lock function is
ready to be given to the graphics hardware. Only unlocked index buffers can be set on the
currently active device.</p></p>
</div>
<!--events-->
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