mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-29 12:05:41 +00:00
233 lines
11 KiB
XML
233 lines
11 KiB
XML
<!DOCTYPE refentry [ <!ENTITY % mathent SYSTEM "math.ent"> %mathent; ]>
|
|
|
|
<!-- Converted by db4-upgrade version 1.1 -->
|
|
|
|
<refentry xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="glGetBufferParameter">
|
|
<info>
|
|
<copyright>
|
|
<year>2005</year>
|
|
<holder>Sams Publishing</holder>
|
|
</copyright>
|
|
<copyright>
|
|
<year>2010-2014</year>
|
|
<holder>Khronos Group</holder>
|
|
</copyright>
|
|
</info>
|
|
<refmeta>
|
|
<refentrytitle>glGetBufferParameter</refentrytitle>
|
|
<manvolnum>3G</manvolnum>
|
|
</refmeta>
|
|
<refnamediv>
|
|
<refname>glGetBufferParameter</refname>
|
|
<refpurpose>return parameters of a buffer object</refpurpose>
|
|
</refnamediv>
|
|
<refsynopsisdiv><title>C Specification</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glGetBufferParameteriv</function></funcdef>
|
|
<paramdef>GLenum <parameter>target</parameter></paramdef>
|
|
<paramdef>GLenum <parameter>value</parameter></paramdef>
|
|
<paramdef>GLint * <parameter>data</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glGetBufferParameteri64v</function></funcdef>
|
|
<paramdef>GLenum <parameter>target</parameter></paramdef>
|
|
<paramdef>GLenum <parameter>value</parameter></paramdef>
|
|
<paramdef>GLint64 * <parameter>data</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
<refsect1 xml:id="parameters"><title>Parameters</title>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><parameter>target</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the target buffer object.
|
|
The symbolic constant must be <constant>GL_ARRAY_BUFFER</constant>,
|
|
<constant>GL_COPY_READ_BUFFER</constant>,
|
|
<constant>GL_COPY_WRITE_BUFFER</constant>,
|
|
<constant>GL_ELEMENT_ARRAY_BUFFER</constant>,
|
|
<constant>GL_PIXEL_PACK_BUFFER</constant>,
|
|
<constant>GL_PIXEL_UNPACK_BUFFER</constant>,
|
|
<constant>GL_TRANSFORM_FEEDBACK_BUFFER</constant>, or
|
|
<constant>GL_UNIFORM_BUFFER</constant>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>value</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the symbolic name of a buffer object parameter.
|
|
Accepted values are <constant>GL_BUFFER_ACCESS_FLAGS</constant>, <constant>GL_BUFFER_MAPPED</constant>,
|
|
<constant>GL_BUFFER_MAP_LENGTH</constant>, <constant>GL_BUFFER_MAP_OFFSET</constant>,
|
|
<constant>GL_BUFFER_SIZE</constant>, or <constant>GL_BUFFER_USAGE</constant>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>data</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Returns the requested parameter.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
<refsect1 xml:id="description"><title>Description</title>
|
|
<para>
|
|
<function>glGetBufferParameteriv</function> and <function>glGetBufferParameteri64v</function>
|
|
return in <parameter>data</parameter> a selected parameter of the buffer object
|
|
specified by <parameter>target</parameter>.
|
|
</para>
|
|
<para>
|
|
<parameter>value</parameter> names a specific buffer object parameter, as follows:
|
|
</para>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><constant>GL_BUFFER_ACCESS_FLAGS</constant></term>
|
|
<listitem>
|
|
<para>
|
|
<parameter>params</parameter> returns the access policy set while mapping the buffer object.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><constant>GL_BUFFER_MAPPED</constant></term>
|
|
<listitem>
|
|
<para>
|
|
<parameter>params</parameter> returns a flag indicating whether the buffer object is currently
|
|
mapped. The initial value is <constant>GL_FALSE</constant>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><constant>GL_BUFFER_MAP_LENGTH</constant></term>
|
|
<listitem>
|
|
<para>
|
|
<parameter>params</parameter> returns the length of the buffer object mapping,
|
|
measured in bytes.
|
|
The initial value is 0.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><constant>GL_BUFFER_MAP_OFFSET</constant></term>
|
|
<listitem>
|
|
<para>
|
|
<parameter>params</parameter> returns the offset (start) of the buffer object mapping,
|
|
measured in bytes.
|
|
The initial value is 0.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><constant>GL_BUFFER_SIZE</constant></term>
|
|
<listitem>
|
|
<para>
|
|
<parameter>params</parameter> returns the size of the buffer object, measured in bytes.
|
|
The initial value is 0.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><constant>GL_BUFFER_USAGE</constant></term>
|
|
<listitem>
|
|
<para>
|
|
<parameter>params</parameter> returns the buffer object's usage pattern.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
<refsect1 xml:id="notes"><title>Notes</title>
|
|
<para>
|
|
If an error is generated,
|
|
no change is made to the contents of <parameter>data</parameter>.
|
|
</para>
|
|
<para>
|
|
If <function>glGetBufferParameteriv</function> is used to query a <parameter>value</parameter> of
|
|
<constant>GL_BUFFER_SIZE</constant>, values greater than or equal to
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
|
|
<!-- eqn: 2 sup 31: -->
|
|
<mml:mrow>
|
|
<mml:msup><mml:mn>2</mml:mn>
|
|
<mml:mfenced open="" close="">
|
|
<mml:msub><mml:mi mathvariant="italic">31</mml:mi></mml:msub>
|
|
</mml:mfenced>
|
|
</mml:msup>
|
|
</mml:mrow>
|
|
</mml:math></inlineequation>
|
|
will be clamped to
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
|
|
<!-- eqn: 2 sup 31 - 1: -->
|
|
<mml:mrow>
|
|
<mml:msup><mml:mn>2</mml:mn>
|
|
<mml:mfenced open="" close="">
|
|
<mml:msub><mml:mi mathvariant="italic">31</mml:mi></mml:msub>
|
|
</mml:mfenced>
|
|
</mml:msup>
|
|
<mml:mo>-</mml:mo>
|
|
<mml:mn>1</mml:mn>
|
|
</mml:mrow>
|
|
</mml:math></inlineequation>.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="errors"><title>Errors</title>
|
|
<para>
|
|
<constant>GL_INVALID_ENUM</constant> is generated if <parameter>target</parameter> or <parameter>value</parameter> is not an
|
|
accepted value.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if the reserved buffer object name 0 is bound to <parameter>target</parameter>.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_ENUM</constant> is generated if <function>glGetBufferParameteri64v</function> is used to query a <parameter>value</parameter> of
|
|
<constant>GL_BUFFER_ACCESS_FLAGS</constant>, <constant>GL_BUFFER_MAPPED</constant> or <constant>GL_BUFFER_USAGE</constant>.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_ENUM</constant> is generated if <function>glGetBufferParameteriv</function> is used to query a <parameter>value</parameter> of
|
|
<constant>GL_BUFFER_MAP_LENGTH</constant> or <constant>GL_BUFFER_MAP_OFFSET</constant>.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="versions">
|
|
<title>API Version Support</title>
|
|
<informaltable>
|
|
<tgroup cols="3" align="left">
|
|
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apifunchead.xml" xpointer="xpointer(/*/*)"/>
|
|
<tbody>
|
|
<row>
|
|
<entry><function>glGetBufferParameteriv</function></entry>
|
|
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apiversion.xml" xpointer="xpointer(/*/*[@role='es20']/*)"/>
|
|
</row>
|
|
<row>
|
|
<entry><function>glGetBufferParameteri64v</function></entry>
|
|
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apiversion.xml" xpointer="xpointer(/*/*[@role='es30']/*)"/>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</informaltable>
|
|
</refsect1>
|
|
<refsect1 xml:id="seealso"><title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glBufferData</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glMapBufferRange</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glUnmapBuffer</refentrytitle></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="Copyright"><title>Copyright</title>
|
|
<para>
|
|
Copyright <trademark class="copyright"/> 2005 Addison-Wesley.
|
|
Copyright <trademark class="copyright"/> 2010-2014 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.
|
|
<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://opencontent.org/openpub/">http://opencontent.org/openpub/</link>.
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|