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92 lines
4.2 KiB
XML
92 lines
4.2 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="glVertexBindingDivisor">
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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>glVertexBindingDivisor</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glVertexBindingDivisor</refname>
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<refpurpose>modify the rate at which generic vertex attributes advance</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>glVertexBindingDivisor</function></funcdef>
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<paramdef>GLuint <parameter>bindingindex</parameter></paramdef>
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<paramdef>GLuint <parameter>divisor</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>bindingindex</parameter></term>
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<listitem>
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<para>
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The index of the binding whose divisor to modify.
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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>divisor</parameter></term>
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<listitem>
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<para>
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The new value for the instance step rate to apply.
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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>glVertexBindingDivisor</function>, modifies the rate at which generic vertex attributes advance when
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rendering multiple instances of primitives in a single draw command. If
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<parameter>divisor</parameter> is zero, the attributes using the buffer bound to <parameter>bindingindex</parameter>
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advance once per vertex. If <parameter>divisor</parameter> is non-zero, the attributes advance
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once per <parameter>divisor</parameter> instances of the set(s) of vertices being rendered. An
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attribute is referred to as <emphasis>instanced</emphasis> if the corresponding <parameter>divisor</parameter>
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value is non-zero.
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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_INVAILD_VALUE</constant> is generated if <parameter>bindingindex</parameter> is greater than
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or equal to the value of <constant>GL_MAX_VERTEX_ATTRIB_BINDINGS</constant>.
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</para>
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<para>
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<constant>GL_INVALID_OPERATION</constant> is generated if no vertex array object is bound.
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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>glGet</refentrytitle></citerefentry> with arguments <constant>GL_MAX_VERTEX_ATTRIB_BINDINGS</constant>,
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<constant>GL_VERTEX_BINDING_DIVISOR</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>glBindVertexBuffer</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glVertexAttribBinding</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glVertexAttribPointer</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glVertexBindingDivisor</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glVertexAttribPointer</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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