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124 lines
5.2 KiB
XML
124 lines
5.2 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="glGetShaderInfoLog">
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<refmeta>
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<refentrytitle>glGetShaderInfoLog</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glGetShaderInfoLog</refname>
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<refpurpose>Returns the information log for 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>glGetShaderInfoLog</function></funcdef>
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<paramdef>GLuint <parameter>shader</parameter></paramdef>
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<paramdef>GLsizei <parameter>maxLength</parameter></paramdef>
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<paramdef>GLsizei *<parameter>length</parameter></paramdef>
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<paramdef>GLchar *<parameter>infoLog</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 whose information
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log is to be queried.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>maxLength</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 information log.</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>infoLog</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>infoLog</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 information log.</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>glGetShaderInfoLog</function> returns the
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information log for the specified shader object. The information
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log for a shader object is modified when the shader is compiled.
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The string that is returned will be null terminated.</para>
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<para><function>glGetShaderInfoLog</function> returns in
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<parameter>infoLog</parameter> as much of the information log as
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it can, up to a maximum of <parameter>maxLength</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 information
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log can be obtained by calling
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<citerefentry><refentrytitle>glGetShader</refentrytitle></citerefentry>
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with the value <constant>GL_INFO_LOG_LENGTH</constant>.</para>
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<para>The information log for a shader object is a string that
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may contain diagnostic messages, warning messages, and other
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information about the last compile operation. When a shader
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object is created, its information log will be a string of
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length 0.</para>
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</refsect1>
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<refsect1 id="notes"><title>Notes</title>
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<para>The information log for a shader object is the OpenGL
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implementer's primary mechanism for conveying information about
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the compilation process. Therefore, the information log can be
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helpful to application developers during the development
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process, even when compilation is successful. Application
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developers should not expect different OpenGL implementations to
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produce identical information logs.</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>maxLength</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 <constant>GL_INFO_LOG_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>glCompileShader</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glGetProgramInfoLog</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glLinkProgram</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glValidateProgram</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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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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