mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-26 18:55:38 +00:00
189 lines
9.1 KiB
XML
189 lines
9.1 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="glUseProgram">
|
|
<info>
|
|
<copyright>
|
|
<year>2003-2005</year>
|
|
<holder>3Dlabs Inc. Ltd.</holder>
|
|
</copyright>
|
|
<copyright>
|
|
<year>2010-2014</year>
|
|
<holder>Khronos Group</holder>
|
|
</copyright>
|
|
</info>
|
|
<refmeta>
|
|
<refentrytitle>glUseProgram</refentrytitle>
|
|
<manvolnum>3G</manvolnum>
|
|
</refmeta>
|
|
<refnamediv>
|
|
<refname>glUseProgram</refname>
|
|
<refpurpose>Installs a program object as part of current rendering state</refpurpose>
|
|
</refnamediv>
|
|
<refsynopsisdiv>
|
|
<title>C Specification</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glUseProgram</function></funcdef>
|
|
<paramdef>GLuint <parameter>program</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
<refsect1 xml:id="parameters"><title>Parameters</title>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><parameter>program</parameter></term>
|
|
<listitem>
|
|
<para>Specifies the handle of the program object
|
|
whose executables are to be used as part of current
|
|
rendering state.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
<refsect1 xml:id="description"><title>Description</title>
|
|
<para><function>glUseProgram</function> installs the program
|
|
object specified by <parameter>program</parameter> as part of
|
|
current rendering state. One or more executables are created in
|
|
a program object by successfully attaching shader objects to it
|
|
with
|
|
<citerefentry><refentrytitle>glAttachShader</refentrytitle></citerefentry>,
|
|
successfully compiling the shader objects with
|
|
<citerefentry><refentrytitle>glCompileShader</refentrytitle></citerefentry>,
|
|
and successfully linking the program object with
|
|
<citerefentry><refentrytitle>glLinkProgram</refentrytitle></citerefentry>.
|
|
</para>
|
|
|
|
<para>A program object will contain an executable that will run
|
|
on the vertex processor if it contains a shader
|
|
object of type <constant>GL_VERTEX_SHADER</constant> that has
|
|
been successfully compiled and linked.
|
|
Similarly, a program object will contain an executable that will run on the
|
|
fragment processor if it contains a shader object of type
|
|
<constant>GL_FRAGMENT_SHADER</constant> that has been
|
|
successfully compiled and linked.</para>
|
|
|
|
<para>While a program object is in use, applications are free to
|
|
modify attached shader objects, compile attached shader objects,
|
|
attach additional shader objects, and detach or delete shader
|
|
objects. None of these operations will affect the executables
|
|
that are part of the current state. However, relinking the
|
|
program object that is currently in use will install the program
|
|
object as part of the current rendering state if the link
|
|
operation was successful (see
|
|
<citerefentry><refentrytitle>glLinkProgram</refentrytitle></citerefentry>
|
|
). If the program object currently in use is relinked
|
|
unsuccessfully, its link status will be set to
|
|
<constant>GL_FALSE</constant>, but the executables and
|
|
associated state will remain part of the current state until a
|
|
subsequent call to <function>glUseProgram</function> removes it
|
|
from use. After it is removed from use, it cannot be made part
|
|
of current state until it has been successfully relinked.</para>
|
|
|
|
<para>If <parameter>program</parameter> is zero, then the current rendering
|
|
state refers to an <emphasis>invalid</emphasis> program object and the
|
|
results of shader execution are undefined. However, this is not an error.</para>
|
|
|
|
</refsect1>
|
|
<refsect1 xml:id="notes"><title>Notes</title>
|
|
<para>Like buffer and texture objects, the name space for
|
|
program objects may be shared across a set of contexts, as long
|
|
as the server sides of the contexts share the same address
|
|
space. If the name space is shared across contexts, any attached
|
|
objects and the data associated with those attached objects are
|
|
shared as well.</para>
|
|
|
|
<para>Applications are responsible for providing the
|
|
synchronization across API calls when objects are accessed from
|
|
different execution threads.</para>
|
|
|
|
</refsect1>
|
|
<refsect1 xml:id="errors"><title>Errors</title>
|
|
<para><constant>GL_INVALID_VALUE</constant> is generated if
|
|
<parameter>program</parameter> is neither 0 nor a value
|
|
generated by OpenGL.</para>
|
|
|
|
<para><constant>GL_INVALID_OPERATION</constant> is generated if
|
|
<parameter>program</parameter> is not a program object.</para>
|
|
|
|
<para><constant>GL_INVALID_OPERATION</constant> is generated if
|
|
<parameter>program</parameter> could not be made part of current
|
|
state.</para>
|
|
|
|
<para><constant>GL_INVALID_OPERATION</constant> is generated if
|
|
transform feedback mode is active and not paused.</para>
|
|
|
|
</refsect1>
|
|
<refsect1 xml:id="associatedgets"><title>Associated Gets</title>
|
|
<para><citerefentry><refentrytitle>glGet</refentrytitle></citerefentry>
|
|
with the argument <constant>GL_CURRENT_PROGRAM</constant></para>
|
|
|
|
<para><citerefentry><refentrytitle>glGetActiveAttrib</refentrytitle></citerefentry>
|
|
with a valid program object and the index of an active attribute
|
|
variable</para>
|
|
|
|
<para><citerefentry><refentrytitle>glGetActiveUniform</refentrytitle></citerefentry>
|
|
with a valid program object and the index of an active uniform
|
|
variable</para>
|
|
|
|
<para><citerefentry><refentrytitle>glGetAttachedShaders</refentrytitle></citerefentry>
|
|
with a valid program object</para>
|
|
|
|
<para><citerefentry><refentrytitle>glGetAttribLocation</refentrytitle></citerefentry>
|
|
with a valid program object and the name of an attribute
|
|
variable</para>
|
|
|
|
<para><citerefentry><refentrytitle>glGetProgramiv</refentrytitle></citerefentry>
|
|
with a valid program object and the parameter to be queried</para>
|
|
|
|
<para><citerefentry><refentrytitle>glGetProgramInfoLog</refentrytitle></citerefentry>
|
|
with a valid program object</para>
|
|
|
|
<para><citerefentry><refentrytitle>glGetUniform</refentrytitle></citerefentry>
|
|
with a valid program object and the location of a uniform
|
|
variable</para>
|
|
|
|
<para><citerefentry><refentrytitle>glGetUniformLocation</refentrytitle></citerefentry>
|
|
with a valid program object and the name of a uniform
|
|
variable</para>
|
|
|
|
<para><citerefentry><refentrytitle>glIsProgram</refentrytitle></citerefentry></para>
|
|
</refsect1>
|
|
<refsect1 xml:id="versions">
|
|
<title>API Version Support</title>
|
|
<informaltable>
|
|
<tgroup cols="4" align="left">
|
|
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apifunchead.xml" xpointer="xpointer(/*/*)"/>
|
|
<tbody>
|
|
<row>
|
|
<entry>glUseProgram</entry>
|
|
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apiversion.xml" xpointer="xpointer(/*/*[@role='es20']/*)"/>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</informaltable>
|
|
</refsect1>
|
|
<refsect1 xml:id="seealso"><title>See Also</title>
|
|
<para><citerefentry><refentrytitle>glAttachShader</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glBindAttribLocation</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glCompileShader</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glCreateProgram</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glDeleteProgram</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glDetachShader</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glLinkProgram</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glUniform</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glValidateProgram</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glVertexAttrib</refentrytitle></citerefentry></para>
|
|
</refsect1>
|
|
<refsect1 xml:id="Copyright"><title>Copyright</title>
|
|
<para>
|
|
Copyright <trademark class="copyright"/> 2003-2005 3Dlabs Inc. Ltd.
|
|
Copyright <trademark class="copyright"/> 2010-2014 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>
|