mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-26 21:15:28 +00:00
150 lines
8.3 KiB
XML
150 lines
8.3 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="glCopyBufferSubData">
|
|
<info>
|
|
<copyright>
|
|
<year>2010</year>
|
|
<holder>Khronos Group</holder>
|
|
</copyright>
|
|
</info>
|
|
<refmeta>
|
|
<refentrytitle>glCopyBufferSubData</refentrytitle>
|
|
<manvolnum>3G</manvolnum>
|
|
</refmeta>
|
|
<refnamediv>
|
|
<refname>glCopyBufferSubData</refname>
|
|
<refpurpose>copy part of the data store of a buffer object to the data store of another buffer object</refpurpose>
|
|
</refnamediv>
|
|
<refsynopsisdiv><title>C Specification</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glCopyBufferSubData</function></funcdef>
|
|
<paramdef>GLenum <parameter>readtarget</parameter></paramdef>
|
|
<paramdef>GLenum <parameter>writetarget</parameter></paramdef>
|
|
<paramdef>GLintptr <parameter>readoffset</parameter></paramdef>
|
|
<paramdef>GLintptr <parameter>writeoffset</parameter></paramdef>
|
|
<paramdef>GLsizeiptr <parameter>size</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
<refsect1 xml:id="parameters"><title>Parameters</title>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><parameter>readtarget</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the target from whose data store data should be read.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>writetarget</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the target to whose data store data should be written.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>readoffset</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the offset, in basic machine units, within the data store of <parameter>readtarget</parameter> from which data should be read.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>writeoffset</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the offset, in basic machine units, within the data store of <parameter>writetarget</parameter> to which data should be written.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>size</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the size, in basic machine units, of the data to be copied from <parameter>readtarget</parameter> to <parameter>writetarget</parameter>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
<refsect1 xml:id="description"><title>Description</title>
|
|
<para>
|
|
<function>glCopyBufferSubData</function> copies part of the data store attached to <parameter>readtarget</parameter> to the
|
|
data store attached to <parameter>writetarget</parameter>. The number of basic machine units indicated by <parameter>size</parameter>
|
|
is copied from the source, at offset <parameter>readoffset</parameter> to the destination at <parameter>writeoffset</parameter>,
|
|
also in basic machine units.
|
|
</para>
|
|
<para>
|
|
<parameter>readtarget</parameter> and <parameter>writetarget</parameter> must be <constant>GL_ARRAY_BUFFER</constant>,
|
|
<constant>GL_COPY_READ_BUFFER</constant>, <constant>GL_COPY_WRITE_BUFFER</constant>, <constant>GL_DRAW_INDIRECT_BUFFER</constant>,
|
|
<constant>GL_DISPATCH_INDIRECT_BUFFER</constant>, <constant>GL_ELEMENT_ARRAY_BUFFER</constant>,
|
|
<constant>GL_PIXEL_PACK_BUFFER</constant>, <constant>GL_PIXEL_UNPACK_BUFFER</constant>, <constant>GL_QUERY_BUFFER</constant>,
|
|
<constant>GL_TEXTURE_BUFFER</constant>,
|
|
<constant>GL_TRANSFORM_FEEDBACK_BUFFER</constant> or <constant>GL_UNIFORM_BUFFER</constant>. Any of these targets may be used,
|
|
although the targets <constant>GL_COPY_READ_BUFFER</constant> and <constant>GL_COPY_WRITE_BUFFER</constant> are provided
|
|
specifically to allow copies between buffers without disturbing other GL state.
|
|
</para>
|
|
<para>
|
|
<parameter>readoffset</parameter>, <parameter>writeoffset</parameter> and <parameter>size</parameter> must all be greater than or equal to
|
|
zero. Furthermore, <parameter>readoffset</parameter> + <parameter>size</parameter> must not exceeed the size of the buffer
|
|
object bound to <parameter>readtarget</parameter>, and <parameter>readoffset</parameter> + <parameter>size</parameter> must not exceeed the
|
|
size of the buffer bound to <parameter>writetarget</parameter>. If the same buffer object is bound to both <parameter>readtarget</parameter>
|
|
and <parameter>writetarget</parameter>, then the ranges specified by <parameter>readoffset</parameter>, <parameter>writeoffset</parameter>
|
|
and <parameter>size</parameter> must not overlap.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="notes"><title>Notes</title>
|
|
<para>
|
|
The <constant>GL_DISPATCH_INDIRECT_BUFFER</constant> and <constant>GL_SHADER_STORAGE_BUFFER</constant> targets are available only if the GL version
|
|
is 4.3 or greater.
|
|
</para>
|
|
<para>
|
|
The <constant>GL_QUERY_BUFFER</constant> target is available only if the GL version is 4.4 or greater.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="errors"><title>Errors</title>
|
|
<para>
|
|
<constant>GL_INVALID_VALUE</constant> is generated if any of <parameter>readoffset</parameter>, <parameter>writeoffset</parameter>
|
|
or <parameter>size</parameter> is negative, if <parameter>readoffset</parameter> + <parameter>size</parameter> exceeds the
|
|
size of the buffer object bound to <parameter>readtarget</parameter> or if <parameter>writeoffset</parameter> + <parameter>size</parameter>
|
|
exceeds the size of the buffer object bound to <parameter>writetarget</parameter>.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_VALUE</constant> is generated if the same buffer object is bound to both <parameter>readtarget</parameter>
|
|
and <parameter>writetarget</parameter> and the ranges [<parameter>readoffset</parameter>, <parameter>readoffset</parameter> +
|
|
<parameter>size</parameter>) and [<parameter>writeoffset</parameter>, <parameter>writeoffset</parameter> + <parameter>size</parameter>)
|
|
overlap.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if zero is bound to <parameter>readtarget</parameter> or <parameter>writetarget</parameter>.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if the buffer object bound to either <parameter>readtarget</parameter> or <parameter>writetarget</parameter>
|
|
is mapped.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="seealso"><title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>glGenBuffers</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glBufferData</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glBufferSubData</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glGetBufferSubData</refentrytitle></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="Copyright"><title>Copyright</title>
|
|
<para>
|
|
Copyright <trademark class="copyright"/> 2010-2013 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>
|