--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-04D917A1-E1A0-5149-9660-80A1146D0984.dita	Wed Mar 31 11:11:55 2010 +0100
@@ -0,0 +1,59 @@
+<?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-04D917A1-E1A0-5149-9660-80A1146D0984" xml:lang="en"><title>OpenGLES
+Collection Overview</title><shortdesc>OpenGL ES is a cross-platform API for 2D and 3D graphics on embedded
+systems. It consists of a subset of desktop OpenGL, which is a widely adopted
+2D and 3D graphics API, creating a low-level interface between software and
+graphics acceleration. OpenGL ES includes profiles for floating-point and
+fixed-point systems and the EGL specification for portably binding to native
+windowing systems. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p> <b>Variant</b>: <xref href="GUID-D93978BE-11A3-5CE3-B110-1DEAA5AD566C.dita">ScreenPlay</xref> and <xref href="GUID-F64E6551-670E-5E12-8103-DE504D3EC94F.dita">non-ScreenPlay</xref>. </p>
+<p>The Symbian platform supports two versions of OpenGL ES: </p>
+<ul>
+<li id="GUID-09B72D5B-EF77-5317-90C9-B048241D8569"><p>OpenGL ES 1.X, which
+is for fixed function hardware and offers acceleration, image quality and
+performance. </p> </li>
+<li id="GUID-F9E98024-8198-586D-8E97-C00EB090158E"><p>OpenGL ES 2.X, which
+is for programmable hardware and enables fully programmable 3D graphics and
+shader objects. </p> </li>
+</ul>
+<p>OpenGL ES is an open standard developed by the Khronos Group (<xref href="http://www.khronos.org/" scope="external">www.khronos.org</xref>). </p>
+<p>The following diagram shows the direct use of OpenGL ES by an application
+through the public OpenGL ES interface together with EGL. On the Symbian platform,
+both OpenGL ES and EGL have a component (shown in blue) that declares the
+interface, and both require an implementation that implements that interface
+(shown in green). </p>
+<fig id="GUID-41677786-E59F-5DF7-97BB-05D7FDA0950C">
+<title>           OpenGLES component relationships          </title>
+<image href="GUID-D5A05EE7-5559-55CC-A839-478B4F513CE4_d0e209278_href.png" placement="inline"/>
+</fig>
+<p>It is possible for the OpenGL ES and EGL implementations to communicate
+through a private interface that is not standardized by Symbian. </p>
+<ul>
+<li id="GUID-537E019E-A415-5C6B-A144-D5AD3494E35B"><p>The <xref href="GUID-CBC43846-22BB-5AAF-89FE-3CF4F11B76F6.dita">OpenGLES
+Interface component</xref> provides a consistent interface to OpenGL ES on
+the Symbian platform, enabling cross-device compatibility. The component includes
+the Khronos-released header files (which incorporate some minor changes, such
+as in-source comments). It also provides some Symbian-specific header files
+and LIB, DEF and MMP files and UIDs. It does not provide any implementations
+of the APIs. </p> </li>
+<li id="GUID-712E1F08-6F6F-5E84-A9F1-3EC06D089E62"><p><xref href="GUID-8C6D4350-A38D-57A1-8C8D-C777EA7E8A3E.dita">EGL</xref> is
+an interface between rendering APIs such as OpenGL ES or OpenVG and an underlying
+native platform window system. </p> </li>
+
+</ul>
+</conbody><related-links>
+<link href="GUID-AB93B01C-B6C2-5B24-ADEF-95706584D625.dita"><linktext>OpenGLES
+Collection</linktext></link>
+<link href="GUID-8C6D4350-A38D-57A1-8C8D-C777EA7E8A3E.dita"><linktext>EGL     
+           Collection</linktext></link>
+</related-links></concept>
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