mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-25 17:05:37 +00:00
105 lines
5.3 KiB
XML
105 lines
5.3 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
|
|
"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
|
|
<refentry id="glGetSubroutineUniformLocation">
|
|
<refmeta>
|
|
<refmetainfo>
|
|
<copyright>
|
|
<year>2010</year>
|
|
<holder>Khronos Group.</holder>
|
|
</copyright>
|
|
</refmetainfo>
|
|
<refentrytitle>glGetSubroutineUniformLocation</refentrytitle>
|
|
<manvolnum>3G</manvolnum>
|
|
</refmeta>
|
|
<refnamediv>
|
|
<refname>glGetSubroutineUniformLocation</refname>
|
|
<refpurpose>retrieve the location of a subroutine uniform of a given shader stage within a program</refpurpose>
|
|
</refnamediv>
|
|
<refsynopsisdiv><title>C Specification</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>GLint <function>glGetSubroutineUniformLocation</function></funcdef>
|
|
<paramdef>GLuint <parameter>program</parameter></paramdef>
|
|
<paramdef>GLenum <parameter>shadertype</parameter></paramdef>
|
|
<paramdef>const GLchar *<parameter>name</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
<!-- eqn: ignoring delim $$ -->
|
|
<refsect1 id="parameters"><title>Parameters</title>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><parameter>program</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the name of the program containing shader stage.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>shadertype</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the shader stage from which to query for subroutine uniform index.
|
|
<parameter>shadertype</parameter>
|
|
must be one of <constant>GL_VERTEX_SHADER</constant>, <constant>GL_TESS_CONTROL_SHADER</constant>,
|
|
<constant>GL_TESS_EVALUATION_SHADER</constant>, <constant>GL_GEOMETRY_SHADER</constant> or
|
|
<constant>GL_FRAGMENT_SHADER</constant>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>name</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the name of the subroutine uniform whose index to query.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
<refsect1 id="description"><title>Description</title>
|
|
<para>
|
|
<function>glGetSubroutineUniformLocation</function> returns the location of the subroutine uniform variable
|
|
<parameter>name</parameter> in the shader stage of type <parameter>shadertype</parameter> attached to
|
|
<parameter>program</parameter>, with behavior otherwise identical to
|
|
<citerefentry><refentrytitle>glGetUniformLocation</refentrytitle></citerefentry>.
|
|
</para>
|
|
<para>
|
|
If <parameter>name</parameter> is not the name of a subroutine uniform in the shader stage, -1
|
|
is returned, but no error is generated. If <parameter>name</parameter> is the name of a subroutine uniform in the shader stage,
|
|
a value between zero and the value of <constant>GL_ACTIVE_SUBROUTINE_LOCATIONS</constant> minus one will be returned.
|
|
Subroutine locations are assigned using consecutive integers in the range from zero to the value
|
|
of <constant>GL_ACTIVE_SUBROUTINE_LOCATIONS</constant> minus one for the shader stage. For active subroutine uniforms
|
|
declared as arrays, the declared array elements are assigned consecutive locations.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="errors"><title>Errors</title>
|
|
<para>
|
|
<constant>GL_INVALID_ENUM</constant> is generated if <parameter>shadertype</parameter> or <parameter>pname</parameter>
|
|
is not one of the accepted values.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_VALUE</constant> is generated if <parameter>program</parameter> is not the name of an
|
|
existing program object.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="seealso"><title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>glGetProgram</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glGetActiveSubroutineUniform</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glGetActiveSubroutineUniformName</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glGetUniformLocation</refentrytitle></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="Copyright"><title>Copyright</title>
|
|
<para>
|
|
Copyright <trademark class="copyright"></trademark> 2010 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.
|
|
<ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|