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139 lines
7 KiB
XML
139 lines
7 KiB
XML
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<?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="glProgramBinary">
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<refmeta>
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<refmetainfo>
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<copyright>
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<year>2010</year>
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<holder>Khronos Group</holder>
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</copyright>
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</refmetainfo>
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<refentrytitle>glProgramBinary</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glProgramBinary</refname>
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<refpurpose>load a program object with a program binary</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>glProgramBinary</function></funcdef>
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<paramdef>GLuint <parameter>program</parameter></paramdef>
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<paramdef>GLenum <parameter>binaryFormat</parameter></paramdef>
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<paramdef>const void *<parameter>binary</parameter></paramdef>
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<paramdef>GLsizei <parameter>length</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>program</parameter></term>
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<listitem>
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<para>
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Specifies the name of a program object into which to load a program binary.
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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>binaryFormat</parameter></term>
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<listitem>
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<para>
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Specifies the format of the binary data in binary.
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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>binary</parameter></term>
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<listitem>
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<para>
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Specifies the address an array containing the binary to be loaded into <parameter>program</parameter>.
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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>length</parameter></term>
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<listitem>
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<para>
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Specifies the number of bytes contained in <parameter>binary</parameter>.
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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>glProgramBinary</function> loads a program object with a program binary previously
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returned from <citerefentry><refentrytitle>glGetProgramBinary</refentrytitle></citerefentry>.
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<parameter>binaryFormat</parameter> and <parameter>binary</parameter> must be those returned
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by a previous call to <citerefentry><refentrytitle>glGetProgramBinary</refentrytitle></citerefentry>,
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and <parameter>length</parameter> must be the length returned by
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<citerefentry><refentrytitle>glGetProgramBinary</refentrytitle></citerefentry>, or by
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<citerefentry><refentrytitle>glGetProgram</refentrytitle></citerefentry> when called with
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<parameter>pname</parameter> set to <constant>GL_PROGRAM_BINARY_LENGTH</constant>.
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If these conditions are not met, loading the program binary will fail and <parameter>program</parameter>'s
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<constant>GL_LINK_STATUS</constant> will be set to <constant>GL_FALSE</constant>.
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</para>
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<para>
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A program object's program binary is replaced by calls to
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<citerefentry><refentrytitle>glLinkProgram</refentrytitle></citerefentry> or
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<function>glProgramBinary</function>. When linking success or failure is concerned, <function>glProgramBinary</function>
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can be considered to perform an implicit linking operation.
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<citerefentry><refentrytitle>glLinkProgram</refentrytitle></citerefentry> and <function>glProgramBinary</function>
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both set the program object's <constant>GL_LINK_STATUS</constant> to <constant>GL_TRUE</constant>
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or <constant>GL_FALSE</constant>.
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</para>
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<para>
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A successful call to <function>glProgramBinary</function> will reset all uniform variables to their
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initial values. The initial value is either the value of the variable's initializer as specified in the
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original shader source, or zero if no initializer was present. Additionally, all vertex shader input
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and fragment shader output assignments that were in effect when the program was linked before saving are
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restored with <function>glProgramBinary</function> is called.
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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>program</parameter> is not the
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name of an existing program object.
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</para>
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<para>
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<constant>GL_INVALID_ENUM</constant> is generated if <parameter>binaryFormat</parameter> is not a
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value recognized by the implementation.
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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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A program binary may fail to load if the implementation determines that there has been a
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change in hardware or software configuration from when the program binary was produced such
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as having been compiled with an incompatible or outdated version of the compiler.
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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>glGetProgram</refentrytitle></citerefentry> with argument <constant>GL_PROGRAM_BINARY_LENGTH</constant>
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</para>
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<para>
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<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_NUM_PROGRAM_BINARY_FORMATS</constant>
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</para>
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<para>
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<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_PROGRAM_BINARY_FORMATS</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>glGetProgram</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glGetProgramBinary</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> 2010 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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