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129 lines
5.5 KiB
XML
129 lines
5.5 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
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"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
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<refentry id="glClearBufferData">
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<refentryinfo>
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<copyright>
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<year>2011-2013</year>
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<holder>Khronos Group</holder>
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</copyright>
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</refentryinfo>
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<refmeta>
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<refentrytitle>glClearBufferData</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glClearBufferData</refname>
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<refpurpose>fill a buffer object's data store with a fixed value</refpurpose>
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</refnamediv>
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<refsynopsisdiv><title>C Specification</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glClearBufferData</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLenum <parameter>internalformat</parameter></paramdef>
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<paramdef>GLenum <parameter>format</parameter></paramdef>
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<paramdef>GLenum <parameter>type</parameter></paramdef>
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<paramdef>const void * <parameter>data</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1 id="parameters"><title>Parameters</title>
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<variablelist>
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<varlistentry>
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<term><parameter>target</parameter></term>
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<listitem>
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<para>
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Specify the target of the operation. <parameter>target</parameter> must be
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one of the global buffer binding targets.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>internalformat</parameter></term>
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<listitem>
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<para>
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The internal format with which the data will be stored in the buffer object.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>size</parameter></term>
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<listitem>
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<para>
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The size, in basic machine units of the range of the data store to fill.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>format</parameter></term>
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<listitem>
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<para>
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The format of the data in memory addressed by <parameter>data</parameter>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>type</parameter></term>
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<listitem>
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<para>
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The type of the data in memory addressed by <parameter>data</parameter>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>data</parameter></term>
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<listitem>
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<para>
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The address of a memory location storing the data to be replicated into the
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buffer's data store.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id="description"><title>Description</title>
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<para>
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<function>glClearBufferData</function> fills the entirety of a buffer object's
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data store with data from client memory. Data, initially supplied in a format
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specified by <parameter>format</parameter> in data type <parameter>type</parameter> is
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read from the memory address given by <parameter>data</parameter> and converted into
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the internal representation given by <parameter>internalforamt</parameter>.
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This converted data is then replicated throughout the buffer object's
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data store.
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</para>
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<para>
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If <parameter>data</parameter> is NULL, then the buffer's data store
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is filled with zeros.
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</para>
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</refsect1>
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<refsect1 id="errors"><title>Errors</title>
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<para>
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<constant>GL_INVALID_ENUM</constant> is generated if <parameter>target</parameter> not one of the generic buffer binding targets.
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</para>
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<para>
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<constant>GL_INVALID_VALUE</constant> is generated if no buffer is bound to <parameter>target</parameter>.
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</para>
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<para>
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<constant>GL_INVALID_ENUM</constant> is generated if <parameter>internalformat</parameter> is not a sized internal format.
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</para>
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<para>
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<constant>GL_INVALID_OPERATION</constant> is generated if any part of the buffer's data store is
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mapped with <citerefentry><refentrytitle>glMapBufferRange</refentrytitle></citerefentry> or <citerefentry><refentrytitle>glMapBuffer.</refentrytitle></citerefentry>
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</para>
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</refsect1>
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<refsect1 id="seealso"><title>See Also</title>
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<para>
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<citerefentry><refentrytitle>glClearBufferSubData</refentrytitle></citerefentry>.
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</para>
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</refsect1>
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<refsect1 id="Copyright"><title>Copyright</title>
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<para>
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Copyright <trademark class="copyright"></trademark> 2011-2013 Khronos Group.
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This material may be distributed subject to the terms and conditions set forth in
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the Open Publication License, v 1.0, 8 June 1999.
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<ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
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</para>
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</refsect1>
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</refentry>
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