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<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>Khronos API Implementers' Guidelines</title><link rel="stylesheet" href="igstyle.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.69.1"><meta name="description" content="Guidelines to be followed by implementers of Khronos Group |
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APIs"><style type="text/css"> |
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/* I think that's just a bit too distracting for the reader... */ |
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/* background-attachment: fixed; */ |
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/* background-position: center center; */ |
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}</style></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="article" lang="en"><div class="titlepage"><div><div><h1 class="title"><a name="id4739083"></a>Khronos API Implementers' Guidelines</h1></div><div><div class="authorgroup"><h4 class="editedby">Edited by</h4><h3 class="editor"><span class="firstname">Mark</span> <span class="surname">Callow</span></h3><div class="affiliation"><span class="orgname">HI Corporation<br></span></div><code class="email"><<a href="mailto:callow_mark%20at%20hicorp.co.jp">callow_mark at hicorp.co.jp</a>></code><p></p></div></div><div><p class="copyright">Copyright © 2007 The Khronos Group Inc.</p></div><div><div class="legalnotice"><a name="legal"></a><p>This document is protected by copyright laws and contains |
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material proprietary to the Khronos Group, Inc. It or any components |
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may not be reproduced, republished, distributed, transmitted, |
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displayed, broadcast or otherwise exploited in any manner without |
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the express prior written permission of Khronos Group. |
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The receipt or possession of this |
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document does not convey any rights to reproduce, disclose, or |
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distribute its contents, or to manufacture, use, or sell anything |
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that it may describe, in whole or in part.</p><p>Khronos Group grants express permission to any current Promoter, |
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Contributor or Adopter member of Khronos to copy and redistribute |
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UNMODIFIED versions of this document in any fashion, provided |
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that NO CHARGE is made for the document and the latest available |
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update of the document is used whenever possible. |
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Such distributed document may be |
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re-formatted AS LONG AS the contents of the document are not |
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changed in any way. The document may be incorporated into a |
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product that is sold as long as such product includes significant |
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independent work developed by the seller. A link to the current |
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version of this document on the Khronos Group web-site should |
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be included whenever possible with document distributions.</p><p>Khronos Group makes no, and expressly disclaims any, |
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representations or warranties, express or implied, regarding this |
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document, including, without limitation, any implied warranties |
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of merchantability or fitness for a particular purpose or |
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non-infringement of any intellectual property. Khronos Group makes |
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no, and expressly disclaims any, warranties, express or implied, |
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regarding the correctness, accuracy, completeness, timeliness, and |
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reliability of the document. Under no circumstances will the Khronos |
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Group, or any of its Promoters, Contributors or Members or their |
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respective partners, officers, directors, employees, agents or |
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representatives be liable for any damages, whether direct, indirect, |
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special or consequential damages for lost revenues, lost profits, |
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or otherwise, arising from or in connection with these |
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materials.</p><p><span class="trademark">Khronos</span>™ is a trademark of |
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The Khronos Group Inc. <span class="trademark">OpenGL</span>® |
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is a registered trademark, and |
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<span class="trademark">OpenGL ES</span>™is a trademark, of |
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Silicon Graphics, Inc.</p></div></div><div><div class="revhistory"><table border="1" width="100%" summary="Revision history"><tr><th align="left" valign="top" colspan="3"><b>Revision History</b></th></tr><tr><td align="left">Revision 0.9.0</td><td align="left">2006-12-08 19:15:11 -0800</td><td align="left">msc</td></tr><tr><td align="left" colspan="3">First docbook version</td></tr><tr><td align="left">Revision 0.91.0</td><td align="left">2006-12-12 17:26:03 -0800</td><td align="left">msc</td></tr><tr><td align="left" colspan="3">Public review version: amended copyright notice; changed OpenKODE and GLES utility library names.</td></tr></table></div></div><div><div class="abstract"><p class="title"><b>Abstract</b></p><p>Guidelines to be followed by implementers of Khronos Group |
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<em class="glossterm">APIs</em></p></div></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="#introduction">Introduction</a></span></dt><dt><span class="section"><a href="#generalguidelines">General Guidelines </a></span></dt><dd><dl><dt><span class="section"><a href="#controlled">Vendor Controlled Platforms (e.g. BREW, SymbianOS)</a></span></dt><dt><span class="section"><a href="#uncontrolled">Uncontrolled Platforms (e.g. GNU/Linux, Windows, Windows CE)</a></span></dt></dl></dd><dt><span class="section"><a href="#id4787332">Acknowledgements</a></span></dt><dt><span class="glossary"><a href="#id4787444">Glossary</a></span></dt></dl></div><div class="list-of-tables"><p><b>List of Tables</b></p><dl><dt>1. <a href="#id4713194">Header File Names and Locations</a></dt><dt>2. <a href="#id4786950">Recommended Library Names</a></dt></dl></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="introduction"></a>Introduction</h2></div></div></div><p> This document provides guidelines for |
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<a href="#gls_implementer"><em class="firstterm">implementers |
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</em></a> |
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of OpenGL ES, OpenVG and other <a href="#gls_api"><em class="firstterm">API</em></a> |
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standards specified by the Khronos Group. |
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The aim of these hints is to provide commonality between implementations to |
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ease the logistical problems faced by developers using multiple different |
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implementations of an <em class="glossterm">API</em>. |
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</p><p> One of the primary goals is to allow an application binary to run |
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on top of multiple different OpenGL ES / OpenVG / EGL implementations |
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on the same platform. </p><p> Implementers are strongly urged to comply with these guidelines. |
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</p></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="generalguidelines"></a>General Guidelines </h2></div></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="controlled"></a>Vendor Controlled Platforms (e.g. BREW, SymbianOS)</h3></div></div></div><p> Implementers should follow the linkage specifications established |
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by the |
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<a href="#gls_vendor"><em class="firstterm">platform vendor</em></a> |
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. |
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</p><div class="itemizedlist"><ul type="opencircle"><li style="list-style-type: circle"><p> Use the header files, (e.g., for OpenGL ES, gl.h & egl.h) |
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provided by the platform vendor. </p></li><li style="list-style-type: circle"><p> Use the function names specified in those header files. </p></li><li style="list-style-type: circle"><p>Implement all <em class="glossterm">API</em> |
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entry points in the same way as in the |
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<em class="glossterm">vendor</em>-provided |
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<a href="#gls_abi"><em class="firstterm">ABI</em></a>. That is, |
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functions should be functions, in-line functions should be |
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in-line functions and macros should be macros. |
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</p></li><li style="list-style-type: circle"><p> Use the platform specified library names. </p></li></ul></div><p>Vendors of controlled platforms are strongly urged to follow the |
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recommendations given below for <a href="#uncontrolled" title="Uncontrolled Platforms (e.g. GNU/Linux, Windows, Windows CE)"> |
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Uncontrolled Platforms</a> when adding a Khronos Group |
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<em class="glossterm">API</em> to their platform. |
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</p></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="uncontrolled"></a>Uncontrolled Platforms (e.g. GNU/Linux, Windows, Windows CE)</h3></div></div></div><p> When providing implementations for platforms where the vendor |
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does not provide standard linkage specifications, implementers |
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are urged to follow the following recommendations.</p><div class="section" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="headerfiles"></a> Header Files </h4></div></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="hfgeneral"></a>General</h5></div></div></div><div class="itemizedlist"><ul type="disc"><li><p>Use the Khronos provided header files (e.g., for OpenGL |
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ES, <code class="filename">gl.h</code> & |
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<code class="filename">egl.h</code>). If changes are |
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unavoidable, consider contributing your changes back to Khronos |
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by updating the standard header files in the Khronos Subversion |
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tree. </p></li><li><p> If you make your own header files and the platform is |
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Windows, make sure they are suitable for use with |
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<a href="#gls_mfc"><em class="firstterm"><span class="acronym">MFC</span></em></a>. |
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For example |
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<code class="code">#define EGL_DEFAULT_DISPLAY GetDC(0)</code> |
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is broken for MFC. You need to use |
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<code class="code">::GetDC(0)</code> |
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because several MFC have their own |
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<code class="code">GetDC(void)</code> |
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methods.</p></li></ul></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="hfegl"></a>EGL</h5></div></div></div><div class="itemizedlist"><ul type="disc"><li><p> Package the EGL header files |
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<code class="filename">egl.h</code> |
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and |
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<code class="filename">eglplatform.h</code> |
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in the folder |
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<code class="filename">EGL</code>. |
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</p></li><li><p> <code class="filename">eglplatform.h</code> |
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contains platform |
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dependent items and needs to be modified by the implementer. |
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In particular the |
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<span class="type">eglNativeDisplayType</span>, |
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<span class="type">eglNativeWindowType</span>, and |
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<span class="type">eglNativePixmapType</span> |
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typedefs must be defined as appropriate for the platform |
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(typically, they will be typedef'ed to corresponding types |
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in the native window system). Developer documentation should |
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mention the correspondence so that developers know what |
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parameters to pass to |
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<code class="function">eglCreateWindowSurface</code>, |
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<code class="function">eglCreatePixmapSurface</code>, and |
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<code class="function">eglCopyBuffers</code>. |
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Documentation should also describe the format of the |
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<em class="parameter"><code>display_id</code></em> |
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parameter to |
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<code class="function">eglGetDisplay</code>, |
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since this is a platform-specific identifier.</p></li><li><p> Include |
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<code class="filename">eglplatform.h</code> |
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in |
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<code class="filename">egl.h</code> |
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thus: |
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<code class="code">#include <EGL/eglplatform.h></code> |
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. Do not use |
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<code class="code">#include <eglplatform.h></code> |
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because app. makefiles will then need 2 different |
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<em class="parameter"><code>-I<path></code></em> |
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options to find both include files. </p></li><li><p> Do not include |
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<code class="filename">gl.h</code> |
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in |
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<code class="filename">egl.h</code> |
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. </p></li></ul></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="hfgles1x"></a> OpenGL ES 1.x </h5></div></div></div><div class="itemizedlist"><ul type="disc"><li><p> Package the OpenGL ES header files |
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<code class="filename">gl.h</code> |
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and |
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<code class="filename">glplatform.h</code> |
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in the folder |
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<code class="filename">GLES</code> |
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. </p></li><li><p> <code class="filename">glplatform.h</code> |
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contains platform dependent items and may need to be |
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modified by the implementer. Implementers are encouraged |
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to provide their additions for newly supported platforms |
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to the Khronos Group for inclusion in the Adopters' |
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distribution.</p></li><li><p> For compatibility with GLES 1.0 implementations, include |
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in |
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<code class="filename">GLES</code> |
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a special |
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<code class="filename">egl.h</code> |
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containing the following: |
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</p><div class="informalexample"><pre class="programlisting"> |
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#include <EGL/egl.h> |
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#include <GLES/gl.h></pre></div><p> |
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This is because many early OpenGL ES 1.0 implementations |
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included |
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<code class="filename">gl.h</code> |
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in |
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<code class="filename">egl.h</code> |
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so many existing applications only include |
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<code class="filename">egl.h</code> |
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. </p></li><li><p>The name <code class="filename">glu.h</code> |
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is reserved for future use by the Khronos Group.</p></li></ul></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="hfgles2x"></a> OpenGL ES 2.x </h5></div></div></div><div class="itemizedlist"><ul type="disc"><li><p>The core header files for OpenGL ES 2.x are called |
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<code class="filename">gl2.h</code> and |
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<code class="filename">gl2platform.h</code> to |
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keep them distinct from the GLES 1.x header files and enable |
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application to use both versions.</p></li><li><p>The function declarations and constant definitions for |
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OpenGL ES 2.x are divided into 2 header files: |
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<code class="filename">gl2.h</code> |
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declares and defines all the core functions and constants; |
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<code class="filename">gl2ext.h</code> |
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declares and defines functions and constants for all |
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Khronos approved extensions and can be used even if the |
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implementation doesn't provide a particular extension.</p><p>Functions and constants for Implementer |
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extensions should be declared and defined in an implementer's |
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own header file using names and constant values obtained from |
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the Khronos Group's Extension Registry.</p></li><li><p>Package all these header files in the folder |
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<code class="filename">GLES2</code>.</p></li><li><p>The name <code class="filename">glu2.h</code> |
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is reserved for future use by the Khronos Group.</p></li></ul></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="hfopenkode"></a>OpenKODE</h5></div></div></div><div class="itemizedlist"><ul type="disc"><li><p>Package the OpenKODE header files |
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<code class="filename">kd.h</code> |
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and |
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<code class="filename">kdplatform.h</code> |
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in the folder |
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<code class="filename">KD</code>. |
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</p></li><li><p>Implementers are encouraged to code |
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<code class="filename">kd.h</code> such that it |
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includes as few as possible of the platform's include files, |
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and to avoid declaring C and POSIX standard functions. This |
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will ease the creation of portable OpenKODE applications, |
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and help stop non-portable code being added accidentally. |
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</p></li></ul></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="hfopenvg"></a>OpenVG</h5></div></div></div><div class="itemizedlist"><ul type="disc"><li><p>Package the OpenVG header files |
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<code class="filename">openvg.h</code> |
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and, when provided, |
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<code class="filename">vgu.h</code> |
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in the folder |
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<code class="filename">VG</code> |
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.</p></li></ul></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="hfsummary"></a>Header File Summary</h5></div></div></div><div class="table"><a name="id4713194"></a><p class="title"><b>Table 1. Header File Names and Locations</b></p><table summary="Header File Names and Locations" border="1"><colgroup><col align="left"><col align="left"><col align="left"><col align="left"><col align="left"></colgroup><thead><tr><th align="left"> API </th><th align="left"> Location </th><th align="left"> Header Files </th><th align="left"> How to include </th><th align="left"> Provider </th></tr></thead><tbody><tr><td rowspan="2" align="left" valign="top"> EGL 1.x </td><td rowspan="2" align="left" valign="top"> |
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<code class="filename">EGL</code> |
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192 |
</td><td align="left"> |
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<code class="filename">egl.h</code> |
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194 |
</td><td align="left"> |
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<code class="code">#include <EGL/egl.h></code> |
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</td><td align="left"> |
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Khronos |
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</td></tr><tr><td align="left"> |
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<code class="filename">eglplatform.h</code> |
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<sup>[<a name="id4713330" href="#ftn.id4713330">1</a>]</sup> |
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201 |
</td><td align="left"> |
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Included by <code class="filename">egl.h</code> |
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203 |
</td><td align="left"> |
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Vendor or Implementer |
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</td></tr><tr><td rowspan="3" align="left" valign="top"> OpenGL ES 1.x </td><td rowspan="3" align="left" valign="top"> |
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<code class="filename">GLES</code> |
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</td><td align="left"> |
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<code class="filename">gl.h</code> |
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</td><td align="left"> |
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<code class="code">#include <GLES/gl.h></code> |
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</td><td align="left"> |
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Khronos |
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</td></tr><tr><td align="left"> |
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<code class="filename">glplatform.h</code> |
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<sup>[<a name="id4713439" href="#ftn.id4713439">2</a>]</sup> |
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</td><td align="left"> |
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Included by <code class="filename">gl.h</code> |
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</td><td align="left"> |
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Vendor or Implementer |
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</td></tr><tr><td align="left"> |
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<code class="filename">glu.h</code> |
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</td><td colspan="2" align="center"> |
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Reserved for future use |
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</td></tr><tr><td rowspan="4" align="left" valign="top"> OpenGL ES 2.x </td><td rowspan="4" align="left" valign="top"> |
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<code class="filename">GLES2</code> |
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</td><td align="left"> |
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<code class="filename">gl2.h</code> |
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</td><td align="left"> |
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<code class="code">#include <GLES2/gl2.h></code> |
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</td><td align="left"> |
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Khronos |
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</td></tr><tr><td align="left"> |
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<code class="filename">gl2platform.h</code> |
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</td><td align="left"> |
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Included by <code class="filename">gl2.h</code> |
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</td><td align="left"> |
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Vendor or Implementer |
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</td></tr><tr><td align="left"> |
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<code class="filename">gl2ext.h</code> |
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</td><td align="left"> |
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<code class="code">#include <GLES2/gl2ext.h></code> |
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</td><td align="left"> |
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Khronos |
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</td></tr><tr><td align="left"> |
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<code class="filename">glu2.h</code> |
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</td><td colspan="2" align="center"> |
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Reserved for future use |
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</td></tr><tr><td rowspan="2" align="left" valign="top"> OpenKODE 1.x </td><td rowspan="2" align="left" valign="top"> |
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<code class="filename">KD</code> |
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</td><td align="left"> |
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<code class="filename">kd.h</code> |
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<code class="code">#include <KD/kd.h></code> |
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Khronos |
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<code class="filename">kdplatform.h</code> |
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</td><td align="left"> |
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Included by <code class="filename">kd.h</code> |
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</td><td align="left"> |
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Vendor or Implementer |
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<code class="filename">VG</code> |
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<code class="filename">openvg.h</code> |
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<code class="code">#include <VG/openvg.h></code> |
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Khronos |
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</td></tr><tr><td align="left"> |
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<code class="filename">vgu.h</code> |
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<sup>[<a name="id4786686" href="#ftn.id4786686">3</a>]</sup> |
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</td><td align="left"> |
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<code class="code">#include <VG/vgu.h></code> |
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</td><td align="left"> |
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Khronos |
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</td></tr></tbody></table><div class="footnotes"><div class="footnote"><p><sup>[<a name="ftn.id4713330" href="#id4713330">1</a>] </sup> |
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Many early EGL implementations used |
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<code class="filename">egltypes.h</code> |
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instead of the now recommended |
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<code class="filename">eglplatform.h</code> |
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.</p></div><div class="footnote"><p><sup>[<a name="ftn.id4713439" href="#id4713439">2</a>] </sup> |
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<code class="filename">glplatform.h</code> |
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does not exist in many early implementations of |
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OpenGL ES 1.x. Platform dependent declarations were |
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included directly in <code class="filename">gl.h |
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</code>.</p></div><div class="footnote"><p><sup>[<a name="ftn.id4786686" href="#id4786686">3</a>] </sup> |
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Required, if the OpenVG utility library is provided. |
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</p></div></div></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="notes"></a>Notes </h5></div></div></div><div class="itemizedlist"><ul type="disc"><li><p>To find the include files, use appropriate compiler |
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options in the makefiles for your sample programs; e.g. |
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<em class="parameter"><code>-I</code></em> (gcc, linux) or |
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<em class="parameter"><code>/I</code></em> (Visual C++). |
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</p></li><li><p>Given the different IDEs & compilers people use, |
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especially on Windows, it is not possible to recommend a system |
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location to place these include files. Where obvious choices |
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exist Khronos recommends implementers take advantage of them. |
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</p></li><li><p>In particular, GNU/Linux implementations should |
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follow the |
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<a href="http://www.pathname.com/fhs/" target="_top"> |
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<em class="citetitle">Filesystem Hierarchy Standard</em> |
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</a> |
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for location of headers and libraries. |
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</p></li></ul></div></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="libraries"></a>Libraries</h4></div></div></div><div class="itemizedlist"><ul type="disc"><li><p>It is highly desirable to implement all |
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<em class="glossterm">API</em> entry points as |
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function calls. However in the OpenKODE core, macros or in-lines |
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may be used instead of a function call provided the following |
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rules are followed: |
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</p><div class="itemizedlist"><ul type="circle"><li><p>When calling a function, each argument must be evaluated |
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exactly once (although the order of evaluation is |
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undefined).</p></li><li><p>It must be possible to take the address of function. |
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</p></li></ul></div></li><li><p> |
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Except in cases where macros are allowed, ensure the |
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<em class="glossterm">API</em> function |
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names exported by your lib & dll files match the function |
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names specified by the Khronos standard for the |
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<em class="glossterm">API</em> you are |
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implementing. |
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</p></li></ul></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="lpackaging"></a>Packaging</h5></div></div></div><div class="itemizedlist"><ul type="disc"><li><p>OpenGL ES, EGL, OpenVG and OpenKODE entry points should |
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be packaged in separate libraries.</p></li><li><p>However to provide backward compatibility for existing |
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applications, two OpenGL ES 1.1 libraries should be provided: |
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one with and one without the EGL entry points.</p><p> |
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<span class="emphasis"><em>Note: There are extant implementations of the dual |
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OpenGL ES libraries demonstrating this is possible on Symbian, |
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GNU/Linux, Win32 and WinCE.</em></span> |
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</p><p>For OpenGL ES 2.x, only a library without EGL entry points |
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is needed.</p></li></ul></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="lnaming"></a>Naming</h5></div></div></div><p>Khronos recommends the library names shown in the following |
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table: </p><div class="table"><a name="id4786950"></a><p class="title"><b>Table 2. Recommended Library Names</b></p><table summary="Recommended Library Names" border="1"><colgroup><col align="left"><col align="left"></colgroup><thead><tr><th align="left"> API/Entry Points </th><th align="left"> Name </th></tr></thead><tbody><tr><td align="left"> EGL </td><td align="left"> |
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<code class="filename">libEGL.{lib,dll}</code> |
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</td></tr><tr><td align="left"> OpenGL ES 1.x with EGL (Common Profile)</td><td align="left"> |
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<code class="filename">libGLES_CM.{lib,dll}</code> |
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<sup>[<a name="fnreq" href="#ftn.fnreq">1</a>]</sup> |
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<sup>[<a name="fndepr" href="#ftn.fndepr">2</a>]</sup> |
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</td></tr><tr><td align="left"> OpenGL ES 1.x with EGL (Lite Profile) </td><td align="left"> |
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<code class="filename">libGLES_CL.{lib,dll}</code> |
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<sup>[<a href="#ftn.fnreq">1</a>]</sup> |
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<sup>[<a href="#ftn.fndepr">2</a>]</sup> |
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</td></tr><tr><td align="left"> OpenGL ES 1.x without EGL </td><td align="left"> |
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<code class="filename">libGLESv1_C[LM].{lib,dll}</code> |
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<sup>[<a name="fnsprev" href="#ftn.fnsprev">3</a>]</sup> |
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</td></tr><tr><td align="left"> OpenGL ES 2.x without EGL </td><td align="left"> |
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<code class="filename">libGLESv2.{lib,dll}</code> |
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</td></tr><tr><td align="left"> </td><td align="left"> |
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<code class="filename">libGLUESv1.{lib,dll}</code> |
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<sup>[<a name="fnreserved" href="#ftn.fnreserved">4</a>]</sup> |
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</td></tr><tr><td align="left"> </td><td align="left"> |
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<code class="filename">libGLUESv2.{lib,dll}</code> |
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<sup>[<a href="#ftn.fnreserved">4</a>]</sup> |
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</td></tr><tr><td align="left"> OpenKODE </td><td align="left"> |
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<code class="filename">libKD{lib,dll}</code> |
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</td></tr><tr><td align="left"> OpenVG </td><td align="left"> |
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<code class="filename">libOpenVG{lib,dll}</code> |
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</td></tr><tr><td align="left"> OpenVG Utilities (when present) </td><td align="left"> |
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<code class="filename">libOpenVGU.{lib,dll}</code> |
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</td></tr></tbody></table><div class="footnotes"><div class="footnote"><p><sup>[<a name="ftn.fnreq" href="#fnreq">1</a>] </sup> These names are required for OpenGL ES 1.0 |
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and the libraries must contain the EGL entry points |
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as detailed in Chapter 8, |
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<span class="emphasis"><em>Packaging</em></span>, |
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of the OpenGL ES 1.0 specification.</p></div><div class="footnote"><p><sup>[<a name="ftn.fndepr" href="#fndepr">2</a>] </sup> These names are deprecated for OpenGL ES 1.1 |
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and beyond and should only be used for a library |
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that includes the EGL entry points in order to support |
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legacy applications. </p></div><div class="footnote"><p><sup>[<a name="ftn.fnsprev" href="#fnsprev">3</a>] </sup> |
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<span class="emphasis"><em>The OpenGL ES 1.1 specification at revision 1.1.09 |
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was updated to specify these alternate names for GLES |
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libraries that do not contain the EGL entry points. |
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</em></span> |
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</p></div><div class="footnote"><p><sup>[<a name="ftn.fnreserved" href="#fnreserved">4</a>] </sup>These names are reserved for future use by the |
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Khronos Group.</p></div></div></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="notes2"></a>Notes </h5></div></div></div><div class="itemizedlist"><ul type="disc"><li><p><span class="emphasis"><em>The extensions |
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<code class="filename">.lib</code> |
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& <code class="filename">.dll</code> |
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are allowed to vary by platform. On GNU/Linux for example |
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they should be .a and .so to match that platform's |
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conventions.</em></span></p></li></ul></div></div></div></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id4787332"></a>Acknowledgements</h2></div></div></div><p class="ackno"> |
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<p>Thanks to all the members of the Khronos Group for their input |
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and in particular to the following: |
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</p> |
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<table class="simplelist" border="0" summary="Simple list"><tr><td> |
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<span class="othercredit"><span class="firstname">Petri</span> <span class="surname">Kero</span></span> |
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</td></tr><tr><td> |
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<span class="othercredit"><span class="firstname">Jon</span> <span class="surname">Leech</span></span> |
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</td></tr><tr><td> |
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<span class="othercredit"><span class="firstname">Robert</span> <span class="surname">Palmer</span></span> |
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</td></tr><tr><td> |
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<span class="othercredit"><span class="firstname">Jani</span> <span class="surname">Vaarala</span></span> |
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</td></tr><tr><td> |
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<span class="othercredit"><span class="firstname">Hans-Martin</span> <span class="surname">Will</span></span> |
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</td></tr></table> |
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</p></div><div class="glossary"><div class="titlepage"><div><div><h2 class="title"><a name="id4787444"></a>Glossary</h2></div></div></div><dl><dt><a name="gls_abi"></a>Application Binary Interface (ABI)</dt><dd><p> |
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The low-level interface between a compiled application program and the |
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operating system or its libraries. |
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</p></dd><dt><a name="gls_api"></a>Application Programming Interface (API)</dt><dd><p> |
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The source-code level interface between an application program |
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and the operating system or its libraries. |
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</p></dd><dt><a name="gls_implementer"></a>Implementer</dt><dd><p> |
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A company or person who implements a Khronos API. |
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</p></dd><dt><a name="gls_mfc"></a>Microsoft Foundation Classes (MFC)</dt><dd><p> |
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A set of C++ utility classes provided by Microsoft Corporation. |
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</p></dd><dt><a name="gls_vendor"></a>Platform Vendor (Vendor)</dt><dd><p> |
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A company providing an operating system platform that includes an |
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<em class="glossterm">ABI</em> |
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specification for one or more Khronos APIs. E.g., Qualcomm (OpenGL ES |
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on BREW) and Symbian (OpenGL ES on Symbian OS). A Vendor may also be |
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an <em class="glossterm">Implementer.</em> |
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</p></dd></dl></div></div></body></html> |