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Symbian3/PDK/Source/GUID-A72D5154-5E0B-5132-9D08-3B9F8CEA776A.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Fri, 22 Jan 2010 18:26:19 +0000
changeset 1 25a17d01db0c
child 3 46218c8b8afa
permissions -rw-r--r--
Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License
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"Eclipse Public License v1.0" which accompanies this distribution,
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors:
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-->
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept xml:lang="en" id="GUID-A72D5154-5E0B-5132-9D08-3B9F8CEA776A"><title> Floating Point Compiler Options</title><shortdesc>Device creators can enable hardware floating point compiler options in their OpenGL ES implementations without risking binary incompatibility with client programs. </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>. <b>Target audience</b>: Device creators. </p> <p>The OpenGL ES 1.x and 2.0 APIs qualify functions involving floating point variables that are passed or returned by value. With these qualified functions: </p> <ul><li id="GUID-C21FC198-4CE5-5EE8-B45D-AE5CD1468DA4"><p>software floating point calling conventions are used </p> </li> <li id="GUID-A9EC9EEC-DC9A-578B-B19F-9111F417289F"><p>client programs and implementations agree on the calling convention </p> </li> <li id="GUID-BEE0953A-0A06-544D-883A-C302529F1562"><p>the calling convention disregards the compiler options supplied in the MMP project file. </p> </li> </ul> <p>This means that device creators can enable hardware floating point compiler options in their OpenGL ES implementations without a risk of binary incompatibility with client programs. The hardware floating point calling conventions then apply only to function calls that are not part of the standard OpenGL ES API call interface. </p> </conbody><related-links><link href="GUID-7DD1BC7B-B3F7-515D-8DC8-B699B947B434.dita"><linktext>OpenGL ES Porting Guide</linktext> </link> <link href="GUID-90A4BDE2-839A-5A37-ACAA-EB33FE39DE54.dita"><linktext>OpenGL ES Variability
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                Choices</linktext> </link> <link href="GUID-12D5C140-DFDA-549B-9CCF-EF7488B832AE.dita"><linktext>OpenGLES Interface Overview</linktext> </link> </related-links></concept>
FCL/sftools/depl/docscontent