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glClearBufferData.xhtml
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<div class="refentry" id="glClearBufferData">
<div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>glClearBufferData, glClearNamedBufferData — fill a buffer object's data store with a fixed value</p>
</div>
<div class="refsynopsisdiv">
<h2>C Specification</h2>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">void <strong class="fsfunc">glClearBufferData</strong>(</code>
</td>
<td>GLenum <var class="pdparam">target</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLenum <var class="pdparam">internalformat</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLenum <var class="pdparam">format</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLenum <var class="pdparam">type</var>, </td>
</tr>
<tr>
<td> </td>
<td>const void * <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">void <strong class="fsfunc">glClearNamedBufferData</strong>(</code>
</td>
<td>GLuint <var class="pdparam">buffer</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLenum <var class="pdparam">internalformat</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLenum <var class="pdparam">format</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLenum <var class="pdparam">type</var>, </td>
</tr>
<tr>
<td> </td>
<td>const void *<var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
</div>
<div class="refsect1" id="parameters">
<h2>Parameters</h2>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<em class="parameter">
<code>target</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the target to which the buffer object is bound
for <code class="function">glClearBufferData</code>, which must
must be one of the buffer binding targets in the
following table:
</p>
<div class="informaltable">
<table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
<colgroup>
<col style="text-align: left; " class="col1"/>
<col style="text-align: left; " class="col2"/>
</colgroup>
<thead>
<tr>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold">
<strong>Buffer Binding Target</strong>
</span>
</th>
<th style="text-align: left; border-bottom: 2px solid ; ">
<span class="bold">
<strong>Purpose</strong>
</span>
</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_ARRAY_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Vertex attributes</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_ATOMIC_COUNTER_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Atomic counter storage</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_COPY_READ_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Buffer copy source</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_COPY_WRITE_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Buffer copy destination</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_DISPATCH_INDIRECT_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Indirect compute dispatch commands</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_DRAW_INDIRECT_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Indirect command arguments</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_ELEMENT_ARRAY_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Vertex array indices</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_PIXEL_PACK_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Pixel read target</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_PIXEL_UNPACK_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Texture data source</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_QUERY_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Query result buffer</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_SHADER_STORAGE_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Read-write storage for shaders</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_TEXTURE_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Texture data buffer</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER</code>
</td>
<td style="text-align: left; border-bottom: 2px solid ; ">Transform feedback buffer</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; ">
<code class="constant">GL_UNIFORM_BUFFER</code>
</td>
<td style="text-align: left; ">Uniform block storage</td>
</tr>
</tbody>
</table>
</div>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>buffer</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the name of the buffer object for
<code class="function">glClearNamedBufferData</code>.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>internalformat</code>
</em>
</span>
</dt>
<dd>
<p>
The internal format with which the data will be stored
in the buffer object.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>format</code>
</em>
</span>
</dt>
<dd>
<p>
The format of the data in memory addressed by
<em class="parameter"><code>data</code></em>.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>type</code>
</em>
</span>
</dt>
<dd>
<p>
The type of the data in memory addressed by
<em class="parameter"><code>data</code></em>.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>data</code>
</em>
</span>
</dt>
<dd>
<p>
The address of a memory location storing the data to be
replicated into the buffer's data store.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p>
<code class="function">glClearBufferData</code> and
<code class="function">glClearNamedBufferData</code> fill the entirety of
a buffer object's data store with data from client memory.
</p>
<p>
Data, initially supplied in a format specified by
<em class="parameter"><code>format</code></em> in data type
<em class="parameter"><code>type</code></em> is read from the memory address
given by <em class="parameter"><code>data</code></em> and converted into the
internal representation given by
<em class="parameter"><code>internalformat</code></em>, which must be one of the
following sized internal formats:
</p>
<div class="informaltable">
<table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
<colgroup>
<col style="text-align: left; " class="col1"/>
<col style="text-align: left; " class="col2"/>
<col style="text-align: left; " class="col3"/>
<col style="text-align: left; " class="col4"/>
<col style="text-align: center; " class="col5"/>
<col style="text-align: center; " class="col6"/>
<col style="text-align: center; " class="col7"/>
<col style="text-align: center; " class="col8"/>
</colgroup>
<thead>
<tr>
<th style="text-align: left; border-right: 2px solid ; "> </th>
<th style="text-align: left; border-right: 2px solid ; "> </th>
<th style="text-align: left; border-right: 2px solid ; "> </th>
<th style="text-align: left; border-right: 2px solid ; "> </th>
<th style="text-align: center; border-bottom: 2px solid ; " colspan="4">
<span class="bold"><strong> Component </strong></span>
</th>
</tr>
<tr>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold">
<strong>Sized Internal Format</strong>
</span>
</th>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold">
<strong>Base Type</strong>
</span>
</th>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold">
<strong>Components</strong>
</span>
</th>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold">
<strong>Norm</strong>
</span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">1</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">2</th>
<th style="text-align: center; border-bottom: 2px solid ; ">3</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_R8</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">ubyte</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">1</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">YES</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_R16</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">ushort</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">1</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">YES</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_R16F</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">half</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">1</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_R32F</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">float</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">1</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_R8I</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">byte</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">1</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_R16I</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">short</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">1</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_R32I</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">int</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">1</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_R8UI</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">ubyte</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">1</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_R16UI</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">ushort</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">1</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_R32UI</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">uint</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">1</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RG8</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">ubyte</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">2</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">YES</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RG16</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">ushort</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">2</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">YES</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RG16F</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">half</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">2</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RG32F</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">float</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">2</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RG8I</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">byte</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">2</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RG16I</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">short</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">2</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RG32I</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">int</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">2</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RG8UI</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">ubyte</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">2</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RG16UI</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">ushort</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">2</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RG32UI</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">uint</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">2</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">0</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGB32F</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">float</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">3</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGB32I</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">int</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">3</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGB32UI</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">uint</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">3</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">1</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGBA8</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">uint</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">4</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">YES</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">A</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGBA16</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">short</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">4</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">YES</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">A</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGBA16F</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">half</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">4</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">A</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGBA32F</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">float</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">4</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">A</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGBA8I</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">byte</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">4</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">A</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGBA16I</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">short</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">4</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">A</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGBA32I</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">int</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">4</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">A</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGBA8UI</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">ubyte</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">4</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">A</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="constant">GL_RGBA16UI</code>
</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">ushort</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">4</td>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">B</td>
<td style="text-align: center; border-bottom: 2px solid ; ">A</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; ">
<code class="constant">GL_RGBA32UI</code>
</td>
<td style="text-align: left; border-right: 2px solid ; ">uint</td>
<td style="text-align: left; border-right: 2px solid ; ">4</td>
<td style="text-align: left; border-right: 2px solid ; ">NO</td>
<td style="text-align: center; border-right: 2px solid ; ">R</td>
<td style="text-align: center; border-right: 2px solid ; ">G</td>
<td style="text-align: center; border-right: 2px solid ; ">B</td>
<td style="text-align: center; ">A</td>
</tr>
</tbody>
</table>
</div>
<p>
This converted data is then replicated throughout the buffer
object's data store. If <em class="parameter"><code>data</code></em> is NULL,
then the buffer's data store is filled with zeros.
</p>
</div>
<div class="refsect1" id="errors">
<h2>Errors</h2>
<p>
<code class="constant">GL_INVALID_ENUM</code> is generated by
<code class="function">glClearBufferData</code> if
<em class="parameter"><code>target</code></em> is not one of the generic buffer
binding targets.
</p>
<p>
<code class="constant">GL_INVALID_VALUE</code> is generated by
<code class="function">glClearBufferData</code> if no buffer is bound
<em class="parameter"><code>target</code></em>.
</p>
<p>
<code class="constant">GL_INVALID_OPERATION</code> is generated by
<code class="function">glClearNamedBufferData</code> if
<em class="parameter"><code>buffer</code></em> is not the name of an existing
buffer object.
</p>
<p>
<code class="constant">GL_INVALID_ENUM</code> is generated if
<em class="parameter"><code>internalformat</code></em> is not one of the valid
sized internal formats listed in the table above.
</p>
<p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if any
part of the specified range of the buffer object is mapped with
<a class="citerefentry" href="glMapBufferRange"><span class="citerefentry"><span class="refentrytitle">glMapBufferRange</span></span></a>
or
<a class="citerefentry" href="glMapBuffer"><span class="citerefentry"><span class="refentrytitle">glMapBuffer</span></span></a>,
unless it was mapped with the
<code class="constant">GL_MAP_PERSISTENT_BIT</code> bit set in the
<code class="function">glMapBufferRange</code>
<em class="parameter"><code>access</code></em> flags.
</p>
<p>
<code class="constant">GL_INVALID_VALUE</code> is generated if
<em class="parameter"><code>format</code></em> is not a valid format, or
<em class="parameter"><code>type</code></em> is not a valid type.
</p>
</div>
{$pipelinestall}{$examples}
<div class="refsect1" id="versions">
<h2>Version Support</h2>
<div class="informaltable">
<table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
<colgroup>
<col style="text-align: left; "/>
<col style="text-align: center; " class="firstvers"/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; " class="lastvers"/>
</colgroup>
<thead>
<tr>
<th style="text-align: left; border-right: 2px solid ; ">
</th>
<th style="text-align: center; border-bottom: 2px solid ; " colspan="12">
<span class="bold"><strong>OpenGL Version</strong></span>
</th>
</tr>
<tr>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>Function / Feature Name</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>2.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>2.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.3</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.3</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.4</strong></span>
</th>
<th style="text-align: center; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.5</strong></span>
</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="function">glClearBufferData</code>
</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-bottom: 2px solid ; ">✔</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; ">
<code class="function">glClearNamedBufferData</code>
</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; ">✔</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="refsect1" id="seealso">
<h2>See Also</h2>
<p>
<a class="citerefentry" href="glClearBufferSubData"><span class="citerefentry"><span class="refentrytitle">glClearBufferSubData</span></span></a>.
</p>
</div>
<div class="refsect1" id="Copyright">
<h2>Copyright</h2>
<p>
Copyright © 2011-2014 Khronos Group.
This material may be distributed subject to the terms and conditions set forth in
the Open Publication License, v 1.0, 8 June 1999.
<a class="link" href="https://opencontent.org/openpub/" target="_top">https://opencontent.org/openpub/</a>.
</p>
</div>
</div>