<?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-50254C2F-57B6-58C4-911F-294EF2B79C04" xml:lang="en"><title>Khronos

API Support </title><shortdesc>The Symbian platform provides support for a number of APIs created

by the Khronos Group (www.khronos.org). This is a member-funded industry consortium

focused on the creation of open standard, royalty-free APIs to enable the

authoring and accelerated playback of dynamic media on a wide variety of platforms

and devices. This topic provides a brief summary of the Khronos APIs that

are supported in the Symbian platform. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<section id="GUID-4C797D3C-7500-4E05-8207-FD15D60DCA6C"><title>Supported APIs</title> <p><b>OpenGL ES </b> </p> <p>OpenGL

is a 2D and 3D graphics API that provides a broad set of rendering, texture

mapping, special effects, and other visualization functions. It gives software

developers access to geometric and image primitives, display lists, modeling

transformations, lighting and texturing, anti-aliasing and blending. OpenGL

ES is a subset of OpenGL optimized for 2D and 3D graphics on embedded devices

such as mobile phones. </p> <p>See: <xref href="GUID-AB93B01C-B6C2-5B24-ADEF-95706584D625.dita">OpenGLES

Collection</xref>  </p> <p><b>OpenVG </b> </p> <p>OpenVG is an API that provides

a low-level hardware acceleration interface for rendering vector graphics

libraries such as Flash and Scalable Vector Graphics (SVG). OpenVG is targeted

primarily at handheld devices that require portable acceleration of high-quality

vector graphics for user interfaces and text on small screen devices. It does

this while enabling hardware acceleration to provide smooth interactive performance

at low power levels. </p> <p>See: <xref href="GUID-1B1C6D35-FFDF-55B3-BCE2-DD0295858E49.dita">OpenVG

Collection</xref>. </p> <p><b>EGL </b> </p> <p>EGL is an interface between

Khronos rendering APIs such as OpenGL ES or OpenVG and the underlying native

platform window system. </p> <p>See: <xref href="GUID-8C6D4350-A38D-57A1-8C8D-C777EA7E8A3E.dita">EGL

Collection</xref>  </p><p><b>OpenWF Composition</b> </p> <p>OpenWF Composition

(OpenWF-C) provides a hardware abstraction layer that allows power-efficient

hardware-accelerated composition on a wide variety of hardware platforms.

OpenWF-C is particularly aimed at systems with limited memory bandwidth, such

as mobile devices. OpenWF-C enables the UI and the window system stack to

be independent of the hardware used to achieve the composition. OpenWF-C is

a system-level API that can be ignored by application developers.</p> <p>See: <xref href="GUID-8FE41C9A-8171-58A2-A808-17B81E79B11F.dita">OpenWF Composition</xref></p> </section>

<section id="GUID-CC6CEEC2-1553-4C87-AE51-9A62A15944D3"><title>Architectural relationships</title><p>The following diagram

shows the relationships between the Khronos rendering APIs. </p> <fig id="GUID-4ED32621-2B56-54F9-8B10-93C82751971F">

<title>Dependencies between the Khronos rendering components            </title>

</fig> </section>

</conbody><related-links>

<link href="GUID-99BC101A-9466-59EE-B5C9-7622BAF6E6FF.dita"><linktext>Graphics

Concepts</linktext></link>

<link href="http://www.khronos.org/" scope="external"><linktext>http://www.khronos.org/</linktext>

</link>

</related-links></concept>