122 lines
5.1 KiB
XML
122 lines
5.1 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="glGetShaderSource">
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<refentryinfo>
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<copyright>
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<year>2003-2005</year>
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<holder>3Dlabs Inc. Ltd.</holder>
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</copyright>
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<copyright>
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<year>2010-2013</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>glGetShaderSource</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glGetShaderSource</refname>
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<refpurpose>Returns the source code string from a shader object</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>glGetShaderSource</function></funcdef>
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<paramdef>GLuint <parameter>shader</parameter></paramdef>
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<paramdef>GLsizei <parameter>bufSize</parameter></paramdef>
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<paramdef>GLsizei *<parameter>length</parameter></paramdef>
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<paramdef>GLchar *<parameter>source</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>shader</parameter></term>
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<listitem>
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<para>Specifies the shader object to be
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queried.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>bufSize</parameter></term>
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<listitem>
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<para>Specifies the size of the character buffer for
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storing the returned source code string.</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>Returns the length of the string returned in
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<parameter>source</parameter> (excluding the null
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terminator).</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>source</parameter></term>
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<listitem>
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<para>Specifies an array of characters that is used
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to return the source code string.</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><function>glGetShaderSource</function> returns the
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concatenation of the source code strings from the shader object
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specified by <parameter>shader</parameter>. The source code
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strings for a shader object are the result of a previous call to
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<citerefentry><refentrytitle>glShaderSource</refentrytitle></citerefentry>.
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The string returned by the function will be null
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terminated.</para>
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<para><function>glGetShaderSource</function> returns in
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<parameter>source</parameter> as much of the source code string
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as it can, up to a maximum of <parameter>bufSize</parameter>
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characters. The number of characters actually returned,
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excluding the null termination character, is specified by
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<parameter>length</parameter>. If the length of the returned
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string is not required, a value of <constant>NULL</constant> can
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be passed in the <parameter>length</parameter> argument. The
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size of the buffer required to store the returned source code
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string can be obtained by calling
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<citerefentry><refentrytitle>glGetShader</refentrytitle></citerefentry>
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with the value
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<constant>GL_SHADER_SOURCE_LENGTH</constant>.</para>
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</refsect1>
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<refsect1 id="errors"><title>Errors</title>
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<para><constant>GL_INVALID_VALUE</constant> is generated if
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<parameter>shader</parameter> is not a value generated by
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OpenGL.</para>
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<para><constant>GL_INVALID_OPERATION</constant> is generated if
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<parameter>shader</parameter> is not a shader object.</para>
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<para><constant>GL_INVALID_VALUE</constant> is generated if
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<parameter>bufSize</parameter> is less than 0.</para>
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</refsect1>
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<refsect1 id="associatedgets"><title>Associated Gets</title>
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<para><citerefentry><refentrytitle>glGetShader</refentrytitle></citerefentry>
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with argument
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<constant>GL_SHADER_SOURCE_LENGTH</constant></para>
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<para><citerefentry><refentrytitle>glIsShader</refentrytitle></citerefentry></para>
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</refsect1>
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<refsect1 id="seealso"><title>See Also</title>
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<para><citerefentry><refentrytitle>glCreateShader</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glShaderSource</refentrytitle></citerefentry></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> 2003-2005 3Dlabs Inc. Ltd.
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Copyright <trademark class="copyright"></trademark> 2010-2013 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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