1 <?xml version=
"1.0" encoding=
"UTF-8"?>
2 <!DOCTYPE book PUBLIC
"-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
3 "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
4 <refentry id=
"glFlushMappedBufferRange">
9 <holder>Khronos Group
</holder>
12 <refentrytitle>glFlushMappedBufferRange
</refentrytitle>
13 <manvolnum>3G
</manvolnum>
16 <refname>glFlushMappedBufferRange
</refname>
17 <refpurpose>indicate modifications to a range of a mapped buffer
</refpurpose>
19 <refsynopsisdiv><title>C Specification
</title>
22 <funcdef>void
<function>glFlushMappedBufferRange
</function></funcdef>
23 <paramdef>GLenum
<parameter>target
</parameter></paramdef>
24 <paramdef>GLintptr
<parameter>offset
</parameter></paramdef>
25 <paramdef>GLsizeiptr
<parameter>length
</parameter></paramdef>
29 <!-- eqn: ignoring delim $$ -->
30 <refsect1 id=
"parameters"><title>Parameters
</title>
33 <term><parameter>target
</parameter></term>
36 Specifies the target of the flush operation.
<parameter>target
</parameter> must be
<constant>GL_ARRAY_BUFFER
</constant>,
37 <constant>GL_COPY_READ_BUFFER
</constant>,
<constant>GL_COPY_WRITE_BUFFER
</constant>,
<constant>GL_ELEMENT_ARRAY_BUFFER
</constant>,
38 <constant>GL_PIXEL_PACK_BUFFER
</constant>,
<constant>GL_PIXEL_UNPACK_BUFFER
</constant>,
<constant>GL_TEXTURE_BUFFER
</constant>,
39 <constant>GL_TRANSFORM_FEEDBACK_BUFFER
</constant>, or
<constant>GL_UNIFORM_BUFFER
</constant>.
44 <term><parameter>offset
</parameter></term>
47 Specifies the start of the buffer subrange, in basic machine units.
52 <term><parameter>length
</parameter></term>
55 Specifies the length of the buffer subrange, in basic machine units.
61 <refsect1 id=
"description"><title>Description
</title>
63 <function>glFlushMappedBufferRange
</function> indicates that modifications have been made to a range of a mapped buffer.
64 The buffer must previously have been mapped with the
<constant>GL_MAP_FLUSH_EXPLICIT_BIT
</constant> flag.
<parameter>offset
</parameter>
65 and
<parameter>length
</parameter> indicate the modified subrange of the mapping, in basic units. The specified subrange to flush
66 is relative to the start of the currently mapped range of the buffer.
<function>glFlushMappedBufferRange
</function> may be called
67 multiple times to indicate distinct subranges of the mapping which require flushing.
70 <refsect1 id=
"errors"><title>Errors
</title>
72 <constant>GL_INVALID_VALUE
</constant> is generated if
<parameter>offset
</parameter> or
<parameter>length
</parameter>
73 is negative, or if
<parameter>offset
</parameter> +
<parameter>length
</parameter> exceeds the size of the mapping.
76 <constant>GL_INVALID_OPERATION
</constant> is generated if zero is bound to
<parameter>target
</parameter>.
79 <constant>GL_INVALID_OPERATION
</constant> is generated if the buffer bound to
<parameter>target
</parameter> is not
80 mapped, or is mapped without the
<constant>GL_MAP_FLUSH_EXPLICIT_BIT
</constant> flag.
83 <refsect1 id=
"seealso"><title>See Also
</title>
85 <citerefentry><refentrytitle>glMapBufferRange
</refentrytitle></citerefentry>,
86 <citerefentry><refentrytitle>glMapBuffer
</refentrytitle></citerefentry>,
87 <citerefentry><refentrytitle>glUnmapBuffer
</refentrytitle></citerefentry>
90 <refsect1 id=
"Copyright"><title>Copyright
</title>
92 Copyright
<trademark class=
"copyright"></trademark> 2010 Khronos Group.
93 This material may be distributed subject to the terms and conditions set forth in
94 the Open Publication License, v
1.0,
8 June
1999.
95 <ulink url=
"http://opencontent.org/openpub/">http://opencontent.org/openpub/
</ulink>.