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105 lines
4.7 KiB
XML
105 lines
4.7 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="glInvalidateBufferSubData">
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<refentryinfo>
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<copyright>
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<year>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>glInvalidateBufferSubData</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glInvalidateBufferSubData</refname>
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<refpurpose>invalidate a region of a buffer object's data store</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>glInvalidateBufferSubData</function></funcdef>
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<paramdef>GLuint <parameter>buffer</parameter></paramdef>
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<paramdef>GLintptr <parameter>offset</parameter></paramdef>
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<paramdef>GLsizeiptr <parameter>length</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>buffer</parameter></term>
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<listitem>
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<para>
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The name of a buffer object, a subrange of whose data store to invalidate.
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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>offset</parameter></term>
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<listitem>
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<para>
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The offset within the buffer's data store of the start of the range to be invalidated.
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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>length</parameter></term>
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<listitem>
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<para>
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The length of the range within the buffer's data store to be invalidated.
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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>glInvalidateBufferSubData</function> invalidates all or part of the
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content of the data store of a buffer object. After invalidation, the content
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of the specified range of the buffer's data store becomes undefined. The
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start of the range is given by <parameter>offset</parameter> and its size
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is given by <parameter>length</parameter>, both measured in basic machine units.
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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_VALUE</constant> is generated if <parameter>offset</parameter> or
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<parameter>length</parameter> is negative, or if <parameter>offset</parameter> +
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<parameter>length</parameter> is greater than the value of <constant>GL_BUFFER_SIZE</constant>
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for <parameter>buffer</parameter>.
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</para>
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<para>
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<constant>GL_INVALID_VALUE</constant> is generated if <parameter>buffer</parameter> is not the
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name of an existing buffer object.
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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 <parameter>buffer</parameter>
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is currently mapped.
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</para>
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</refsect1>
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<refsect1 id="associatedgets"><title>Associated Gets</title>
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<para>
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<citerefentry><refentrytitle>glGetBufferParameter</refentrytitle></citerefentry> with argument <constant>GL_BUFFER_SIZE</constant>
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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>glInvalidateTexSubImage</refentrytitle></citerefentry>,,
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<citerefentry><refentrytitle>glInvalidateTexImage</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glInvalidateBufferData</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glInvalidateFramebuffer</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glInvalidateSubFramebuffer</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> 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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