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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-A5914CFF-6F86-53E8-9928-36D3379835B1" xml:lang="en"><title>EGL
+Interface Overview</title><shortdesc>The EGL Interface component defines the interface to EGL on the
+Symbian platform. The component standardizes the source and binary interfaces
+by providing header and LIB/DSO files for EGL users as well as DEF files for
+EGL implementers. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<section><title>Supported APIs</title> <p>The EGL specifications are defined
+by the Khronos Group (<xref href="http://www.khronos.org" scope="external">www.khronos.org</xref>).
+The following table provides links to the relevant specifications. </p> <table id="GUID-43D6B812-B4AB-506E-8159-61FA0DEC6F2A">
+<tgroup cols="2"><colspec colname="col0"/><colspec colname="col1"/>
+<thead>
+<row>
+<entry>APIs</entry>
+<entry>Specification</entry>
+</row>
+</thead>
+<tbody>
+<row>
+<entry>EGL 1.4 </entry>
+<entry><xref href="http://www.khronos.org/registry/egl/specs/eglspec.1.4.pdf" scope="external">http://www.khronos.org/registry/egl/specs/eglspec.1.4.pdf</xref> </entry>
+</row>
+<row>
+<entry>EGL 1.3 </entry>
+<entry><xref href="http://www.khronos.org/registry/egl/specs/eglspec.1.3.pdf" scope="external">http://www.khronos.org/registry/egl/specs/eglspec.1.3.pdf </xref> </entry>
+</row>
+<row>
+<entry>EGL 1.2 </entry>
+<entry><xref href="http://www.khronos.org/files/egl_1_2.pdf" scope="external">http://www.khronos.org/files/egl_1_2.pdf</xref> </entry>
+</row>
+</tbody>
+</tgroup>
+</table> </section>
+<section><title>Header files</title> <p>The EGL Interface component includes
+the Khronos-released header file, <filepath>egl.h</filepath>, and <filepath>egltypes.h</filepath>,
+which is the Symbian equivalent of the Khronos <filepath>eglplatform.h</filepath>.
+Use of the header files supplied in the EGL Interface component helps to ensure
+binary compatibility for applications across different Symbian platforms.
+It also provides source compatibility between different operating systems.
+These header files incorporate minor changes such as Doxygen tags (/** comments)
+but these have no effect on the functionality. </p> <p>The header files are
+provided for EGL 1.2, 1.3 and 1.4. The EGL 1.4 headers are used by default.
+However, there is a variability point that can expose the headers for EGL
+1.3 or 1.2 instead. </p> <p>The Symbian-defined header file <filepath>\epoc32\include\khronos_types.h</filepath> maps
+the Khronos-defined basic types to native Symbian types. </p> </section>
+<section><title> Library file</title> <p>The following library is provided
+by the EGL Interface component. </p> <table id="GUID-0AA8A4D7-72F2-5C6D-A32B-11CB5631F5E0">
+<tgroup cols="2"><colspec colname="col0"/><colspec colname="col1"/>
+<thead>
+<row>
+<entry>Library</entry>
+<entry>Name</entry>
+</row>
+</thead>
+<tbody>
+<row>
+<entry>EGL </entry>
+<entry><filepath> libEGL.lib</filepath> </entry>
+</row>
+</tbody>
+</tgroup>
+</table> </section>
+<section><title> DEF files</title> <p>The EGL Interface component also supplies
+DEF files to further ensure binary compatibility between different platforms.
+These files exist for the WINS and WINSCW emulator and ARM hardware platforms.
+Although the names have a trailing 'u', this is not specified by MMP file
+entries as it is appended to references automatically. </p> <p><b>DEF files
+for WINS and WINSCW </b> </p> <table id="GUID-1FF2D995-AAB9-5B86-9EAD-C6E533A7B339">
+<tgroup cols="2"><colspec colname="col0"/><colspec colname="col1"/>
+<thead>
+<row>
+<entry>Library</entry>
+<entry>Name</entry>
+</row>
+</thead>
+<tbody>
+<row>
+<entry>EGL 1.4 </entry>
+<entry><filepath>\epoc32\include\platform\def\win32\libegl14u.def </filepath> </entry>
+</row>
+<row>
+<entry>EGL 1.3  </entry>
+<entry><filepath>\epoc32\include\platform\def\win32\libegl13u.def </filepath> </entry>
+</row>
+<row>
+<entry>EGL 1.2 </entry>
+<entry><filepath>\epoc32\include\platform\def\win32\libegl12u.def </filepath> </entry>
+</row>
+</tbody>
+</tgroup>
+</table> <p><b>DEF files for ARM </b> </p> <table id="GUID-153A4DF2-F1AA-5878-914C-D6D4A7270549">
+<tgroup cols="2"><colspec colname="col0"/><colspec colname="col1"/>
+<thead>
+<row>
+<entry>Library</entry>
+<entry>Name</entry>
+</row>
+</thead>
+<tbody>
+<row>
+<entry>EGL 1.4 </entry>
+<entry><filepath>\epoc32\include\platform\def\eabi\libegl14u.def </filepath> </entry>
+</row>
+<row>
+<entry>EGL 1.3  </entry>
+<entry><filepath>\epoc32\include\platform\def\eabi\libegl13u.def </filepath> </entry>
+</row>
+<row>
+<entry>EGL 1.2 </entry>
+<entry><filepath>\epoc32\include\platform\def\eabi\libegl12u.def </filepath> </entry>
+</row>
+</tbody>
+</tgroup>
+</table> </section>
+</conbody><related-links>
+<link href="GUID-D252E75C-C8CA-5C51-8DA3-95B937A1295C.dita"><linktext>EGL Interface
+Component</linktext></link>
+</related-links></concept>
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