Symbian3/PDK/Source/GUID-4C166A49-31F7-5315-B797-F97DB52600BC.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Thu, 11 Mar 2010 18:02:22 +0000
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parent 1 25a17d01db0c
child 5 f345bda72bc4
permissions -rw-r--r--
week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
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46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
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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:
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
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    Nokia Corporation - initial contribution.
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Contributors: 
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-->
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="GUID-4C166A49-31F7-5315-B797-F97DB52600BC" xml:lang="en"><title>Display Driver
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Component</title><shortdesc>The Display Driver component (also known as the <b>Display Channel
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Driver</b>) is new in Symbian^3 and is for use in ScreenPlay only. The Display
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Driver component includes a reference implementation, which a composition
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implementation can use to display the composited output on the screen without
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tearing. However, the use of the Display Channel Driver is optional. Implementers
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of the Composition Interface are not required to use it. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>The Display Channel Driver provides the <xref href="GUID-7AE33C09-8CB2-335B-B2CC-76F437E3352E.dita"><apiname>RDisplayChannel</apiname></xref> API.
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This provides methods that post double-buffered composition frame buffers
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to the screen and set and get the screen rotation, resolution and other display
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properties. <xref href="GUID-7AE33C09-8CB2-335B-B2CC-76F437E3352E.dita"><apiname>RDisplayChannel</apiname></xref> also allows composition surfaces
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to be posted directly to the screen without being composited with other layers.
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This is referred to as <b>fast path mode</b> and is typically used when a
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video or game occupies the whole screen. The <xref href="GUID-7AE33C09-8CB2-335B-B2CC-76F437E3352E.dita"><apiname>RDisplayChannel</apiname></xref> API
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uses the term <b>user buffers</b> for surfaces that are in fast path mode.</p>
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<p><i>Note</i>: The Display Channel Driver does not replace the existing LCD
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Driver, which is implemented as a standard kernel extension and is therefore
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also known as the <b>LCD Extension</b>. This continues to be required and
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provides support for legacy applications.</p>
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</conbody><related-links>
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<link href="GUID-8C22AF20-EE0E-5AD2-BEFD-FED5A7DBB09B.dita"><linktext>LCD Extension</linktext>
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</link>
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<link href="GUID-4797000B-B61D-5EF8-8C38-3159433C9C7B.dita"><linktext>Graphics
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Hardware Drivers Collection</linktext></link>
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</related-links></concept>