author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 27 Apr 2010 17:34:42 +0300 | |
branch | RCL_3 |
changeset 9 | 3ac8bf5c5014 |
parent 3 | d8a3531bc6b8 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2008 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Definition of CHuiVg10PBufferSurface class. |
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* CHuiVg10PBufferSurface is an OpenVG PBuffer surface |
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* object that implements the MHuiRenderSurface interface. |
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* |
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*/ |
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#ifndef __HUIVG10PBUFFERSURFACE_H__ |
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#define __HUIVG10PBUFFERSURFACE_H__ |
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#include "HuiVg10RenderSurface.h" |
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class CHuiVg10RenderPlugin; |
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class CFbsBitmap; |
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/** |
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* Off-screen rendering surface for OpenGL ES content. A pbuffer (pixel buffer) |
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* surface can be used for instance for rendering temporary graphical content |
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* onto. This content can then be reused in the current application. Because |
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* the class has been inherited from MHuiRenderSurface, it can also be used |
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* for rendering from displays. Doesn't output rendered content on the |
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* framebuffer. |
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* |
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* @lib hitchcock.lib |
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*/ |
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NONSHARABLE_CLASS(CHuiVg10PBufferSurface) : public CBase, public MHuiRenderSurface |
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{ |
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public: // Constructors and destructor |
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/** |
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* \todo |
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*/ |
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static CHuiVg10PBufferSurface* NewLC(CHuiVg10RenderPlugin& aRenderer, const TSize& aSize, TInt aAlphaBits, TInt aEglBufferType, TInt aBufferColorMode); |
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/** |
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* Constructs a new example CHuiVg10PBufferSurface instance. A static factory method that |
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* leaves the object to the cleanup stack. |
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* @param aRenderer CHuiVg10RenderPlugin object that is used to access the shared context |
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* and determine surface configurations. |
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* @param aSize Size in pixels of the created PBuffer surface object. |
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* @return Newly created instance of CHuiVg10PBufferSurface. |
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*/ |
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static CHuiVg10PBufferSurface* NewLC(CHuiVg10RenderPlugin& aRenderer, const TSize& aSize, TInt aAlphaBits = 0); |
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/** |
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* Constructs a new example CHuiVg10PBufferSurface instance. A static factory method. |
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* @param aSize Size in pixels of the created PBuffer surface object. |
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* @return Newly created instance of CHuiVg10PBufferSurface. |
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*/ |
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static CHuiVg10PBufferSurface* NewL(const TSize& aSize, TInt aAlphaBits = 0); |
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/** |
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* Constructs a new CHuiVg10PBufferSurface class instance and leaves it |
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* on the cleanup stack. |
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* @param aSize Size in pixels of the created PBuffer surface object. |
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* @return Newly created instance of CHuiVg10PBufferSurface. |
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*/ |
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static CHuiVg10PBufferSurface* NewLC(const TSize& aSize, TInt aAlphaBits = 0); |
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/** |
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* Destructor. |
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*/ |
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virtual ~CHuiVg10PBufferSurface(); |
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public: // From MHuiRenderSurface |
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TUint Flags() const; |
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/** |
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* Determines the location of the rendering surface on the screen. But since |
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* this is an off-screen surface, will return EFalse and will not set the |
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* origin. |
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* |
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* @return If location successfully determined, returns <code>ETrue</code>. |
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* If the surface is an off-screen surface, returns <code>EFalse</code>. |
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*/ |
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TBool GetScreenOrigin(TPoint& aOrigin) const; |
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/** |
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* Determines the size of the surface. |
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* |
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* @return Size of the surface in pixels. |
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*/ |
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TSize Size() const; |
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/** |
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* Changes the size of the surface. |
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* |
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* @param aSize Size of surface in pixels. |
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*/ |
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void SetSizeL(const TSize& aSize); |
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/** |
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* Makes this the current rendering surface for any drawing operations. |
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* Call CHuiStatic::SetCurrentRenderSurface(). |
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*/ |
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void MakeCurrent(); |
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/** |
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* Swaps the front and back buffers of the surface. |
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* Pbuffers consist of a single buffer only, so swapping has no effect. |
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*/ |
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void SwapBuffers(); |
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/** |
3
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* Synchronizes the context. All rendering calls for the currently bound context are guaranteed |
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* to be executed, when thsi method returns. |
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*/ |
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void Finish(); |
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/** |
0
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* Binds a texture to the surface to be used during subsequent drawing |
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* operations. |
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*/ |
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void BindTexture(TInt aTextureUnit, |
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const MHuiSegmentedTexture& aTexture, |
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TInt activeTextureSegment); |
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/** |
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* Handles change in surface visibility. This method is called if surface is either |
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* hidden or shown. |
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* |
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* @param aIsVisible ETrue if surface becomes visible. EFalse if surface is hidden. |
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*/ |
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void HandleVisibilityEvent(TBool aIsVisible); |
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void Release(); |
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void RestoreL(); |
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void HandleDisplayUsageChangeL(); |
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// These methods are not really used, since opengles renderer doesn't |
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// support dirty region handling or symbian graphics context! |
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virtual void SetDirtyRect(const TRect& aRect); |
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virtual MHuiTargetBitmap* BackBuffer(); |
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virtual CFbsBitGc* Gc(); |
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/** |
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* Provides expandability, helps keeping the binary compatibility. Since virtual |
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* table is now exported and this class is dll derivable and the implementation |
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* is more difficult to change, hence this method, which can provide additional |
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* extension APIs. |
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* |
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* @param aExtensionUid UID, which is being used for recognizing the extension |
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* @param aExtensionParams Return pointer to the extension API, once recognized from the extension uid |
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*/ |
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virtual void RenderSurfaceExtension(const TUid& aExtensionUid, TAny** aExtensionParams); |
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public: // New methods |
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/** |
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* Returns the associated EGL surface object. |
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*/ |
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EGLSurface EglSurface(); |
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void BindToM3G(); |
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void ReleaseFromM3G(); |
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/** |
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* \todo |
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*/ |
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CFbsBitmap* Buffer(); |
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/** |
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* \todo |
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*/ |
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TInt BufferColorMode() const; |
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protected: |
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/** |
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* Creates a new PBuffer surface object. |
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*/ |
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EGLSurface CreateSurface(EGLConfig aConfig); |
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/** |
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* Determine config for the owner display. |
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*/ |
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EGLConfig DetermineConfig(); |
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private: |
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/* Constructors. */ |
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/** |
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* Constructs an instance of CHuiClassName. |
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* @param aRenderer CHuiVg10RenderPlugin object that is used to access |
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* the shared context and determine surface configurations. |
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* @param aSize Size of the created PBuffer surface. |
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* @note Protected because this constructor only needs to be |
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* called by derived classes. Use the provided static |
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* factory methods instead. |
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* @see NewL() |
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* @see NewLC() |
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*/ |
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CHuiVg10PBufferSurface(CHuiVg10RenderPlugin& aRenderer, const TSize& aSize, TInt aAlphaBits, TInt aEglBufferType, TInt aBufferColorMode); |
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/** |
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* Second-phase constructor. |
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*/ |
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void ConstructL(); |
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private: |
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/** The display. */ |
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EGLDisplay iEglDisplay; |
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/** The rendering context. */ |
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EGLContext iEglContext; |
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/** The pbuffer surface where the graphics are drawn. */ |
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EGLSurface iEglSurface; |
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/** Current surface size. */ |
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TSize iSize; |
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/** \todo */ |
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TInt iEglBufferType; |
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/** \todo */ |
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TInt iBufferColorMode; |
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/** Alpha channel bits to allocate. */ |
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TInt iAlphaBits; |
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CFbsBitmap* iBuffer; |
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/** OpenGL ES Render plugin that provides the display configurations and the display |
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for this pbuffer surface. */ |
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CHuiVg10RenderPlugin& iRenderer; |
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TBool iIsHardwareAccelerated; |
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}; |
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#endif // __HUIVG10PBUFFERSURFACE_H__ |
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