+++ /dev/null
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
- "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
-<refentry id="glVertexAttribDivisor">
- <refmeta>
- <refmetainfo>
- <copyright>
- <year>2010</year>
- <holder>Khronos Group</holder>
- </copyright>
- </refmetainfo>
- <refentrytitle>glVertexAttribDivisor</refentrytitle>
- <manvolnum>3G</manvolnum>
- </refmeta>
- <refnamediv>
- <refname>glVertexAttribDivisor</refname>
- <refpurpose>modify the rate at which generic vertex attributes advance during instanced rendering</refpurpose>
- </refnamediv>
- <refsynopsisdiv><title>C Specification</title>
- <funcsynopsis>
- <funcprototype>
- <funcdef>void <function>glVertexAttribDivisor</function></funcdef>
- <paramdef>GLuint <parameter>index</parameter></paramdef>
- <paramdef>GLuint <parameter>divisor</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
- <refsect1 id="parameters"><title>Parameters</title>
- <variablelist>
- <varlistentry>
- <term><parameter>index</parameter></term>
- <listitem>
- <para>
- Specify the index of the generic vertex attribute.
- </para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>divisor</parameter></term>
- <listitem>
- <para>
- Specify the number of instances that will pass between updates of the generic attribute at slot <parameter>index</parameter>.
- </para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
- <refsect1 id="description"><title>Description</title>
- <para>
- <function>glVertexAttribDivisor</function> modifies the rate at which generic vertex attributes advance when rendering
- multiple instances of primitives in a single draw call. If <parameter>divisor</parameter> is zero, the attribute at slot
- <parameter>index</parameter> advances once per vertex. If <parameter>divisor</parameter> is non-zero, the attribute advances
- once per <parameter>divisor</parameter> instances of the set(s) of vertices being rendered. An attribute
- is referred to as instanced if its <constant>GL_VERTEX_ATTRIB_ARRAY_DIVISOR</constant> value is non-zero.
- </para>
- <para>
- <parameter>index</parameter> must be less than the value of <constant>GL_MAX_VERTEX_ATTRIBUTES</constant>.
- </para>
- </refsect1>
- <refsect1 id="notes"><title>Notes</title>
- <para>
- <function>glVertexAttribDivisor</function> is available only if the GL version is 3.3 or higher.
- </para>
- </refsect1>
- <refsect1 id="errors"><title>Errors</title>
- <para>
- <constant>GL_INVALID_VALUE</constant> is generated if <parameter>index</parameter> is greater
- than or equal to the value of <constant>GL_MAX_VERTEX_ATTRIBUTES</constant>.
- </para>
- </refsect1>
- <refsect1 id="seealso"><title>See Also</title>
- <para>
- <citerefentry><refentrytitle>glVertexAttribPointer</refentrytitle></citerefentry>,
- <citerefentry><refentrytitle>glEnableVertexAttribArray</refentrytitle></citerefentry>,
- <citerefentry><refentrytitle>glDisableVertexAttribArray</refentrytitle></citerefentry>
- </para>
- </refsect1>
- <refsect1 id="Copyright"><title>Copyright</title>
- <para>
- Copyright <trademark class="copyright"></trademark> 2010 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.
- <ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
- </para>
- </refsect1>
-</refentry>