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152 lines
7.4 KiB
XML
152 lines
7.4 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="glBindVertexBuffers">
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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>glBindVertexBuffers</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glBindVertexBuffers</refname>
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<refpurpose>bind one or more named buffer objects to a sequence of consecutive vertex buffer binding points</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>glBindVertexBuffers</function></funcdef>
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<paramdef>GLuint <parameter>first</parameter></paramdef>
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<paramdef>GLsizei <parameter>count</parameter></paramdef>
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<paramdef>const GLuint *<parameter>buffers</parameter></paramdef>
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<paramdef>const GLuintptr *<parameter>offsets</parameter></paramdef>
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<paramdef>const GLsizei *<parameter>strides</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>first</parameter></term>
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<listitem>
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<para>
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Specifies the first vertex buffer binding point to which a buffer object is to be bound.
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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>count</parameter></term>
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<listitem>
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<para>
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Specifies the number of buffers to bind.
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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>buffers</parameter></term>
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<listitem>
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<para>
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Specifies the address of an array of names of existing buffer objects.
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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>offsets</parameter></term>
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<listitem>
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<para>
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Specifies the address of an array of offsets to associate with the binding points.
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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>buffers</parameter></term>
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<listitem>
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<para>
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Specifies the address of an array of strides to associate with the binding points.
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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>glBindVertexBuffers</function> binds storage from an array of existing buffer objects to a specified
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number of consecutive vertex buffer binding points units. <parameter>count</parameter> specifies the number of buffer
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objects whose names are stored in the array <parameter>buffers</parameter>. That number
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of buffer object names is read from the array and their storage bound to the <parameter>count</parameter> consecutive
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vertex buffer binding points starting from <parameter>first</parameter>.
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</para>
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<para>
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If the name zero appears in the <parameter>buffers</parameter> array, any existing binding
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to the vertex buffer binding point is reset, and the corresponding entries in <parameter>offsets</parameter>
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and <parameter>strides</parameter> is ignored. Any non-zero entry in <parameter>buffers</parameter> must be the
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name of an existing buffer object. When a non-zero entry in <parameter>buffers</parameter> is
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present, that buffer objects data store is bound to the corresponding vertex buffer binding point.
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If <parameter>buffers</parameter> is <constant>NULL</constant> then it is as
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if an appropriately sized array containing only zeros had been specified.
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</para>
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<para>
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<parameter>offsets</parameter> and <parameter>strides</parameter> specify the addresses
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of two arrays containing, respectively, the offset of the first element
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and stride between elements in each buffer. If an entry in <parameter>buffers</parameter>
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is zero, then the content of the corresponding entry in each of <parameter>offsets</parameter>
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and <parameter>strides</parameter> is ignored.
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</para>
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<para>
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<function>glBindVertexBuffers</function> is equivalent to the following pseudo code:
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</para>
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<programlisting><![CDATA[ for (i = 0; i < count; i++) {
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if (buffers == NULL) {
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glBindVertexBuffer(first + i, 0, 0, 16);
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} else {
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glBindVertexBuffer(first + i, buffers[i], offsets[i], strides[i]);
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}
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}]]></programlisting>
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<para>
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Each entry in <parameter>buffers</parameter> will be checked individually and if found
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to be invalid, the state for that vertex buffer binding point will not be changed and an error will be
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generated. However, the state for other binding points referenced by the command will still
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be updated.
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</para>
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</refsect1>
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<refsect1 id="notes"><title>Notes</title>
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<para>
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<function>glBindVertexBuffers</function> is available only if the GL version is 4.4 or higher.
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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_OPERATION</constant> is generated if <parameter>first</parameter> + <parameter>count</parameter> is greater
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than 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 any value in <constant>buffers</constant> is not
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zero or the name of an existing buffer object.
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</para>
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<para>
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<constant>GL_INVALID_VALUE</constant> is generated if any value in <parameter>offsets</parameter> or <parameter>strides</parameter>
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is negative, or if a value is <parameter>stride</parameter> is greater than the value of <constant>GL_MAX_VERTEX_ATTRIB_STRIDE</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>glGenBuffers</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glDeleteBuffers</refentrytitle></citerefentry>
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<citerefentry><refentrytitle>glDeleteTextures</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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