1 /*

     2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   

    15 *

    16 */

    17 

    18 

    19 

    20 #include "HuiFxVg10FilterBase.h"

    21 #include "uiacceltk/HuiUtil.h"

    22 

    23 

    24 //_LIT(KLitPanicMessage, "HuiFx");

    25 

    26 

    27 TBool CHuiFxVg10FilterBase::Draw(CHuiFxEngine& aEngine, CHuiGc& /* aGc */, CHuiFxRenderbuffer& aTarget, CHuiFxRenderbuffer& aSource,

    28                                             const TRect& aTargetRect, const TRect& aSourceRect)

    29     {

    30     aTarget.BindAsTexture(ERenderbufferUsageWriteOnly);

    31     aSource.BindAsTexture(ERenderbufferUsageReadOnly);

    32     VGImage srcImage  = (reinterpret_cast<CHuiFxVg10RenderbufferBase*>(&aSource))->AcquireSubImage(aSourceRect);

    33     VGImage destImage = (reinterpret_cast<CHuiFxVg10RenderbufferBase*>(&aTarget))->AcquireSubImage(aTargetRect);

    34     

    35     // take opacity into account

    36     const VGfloat opacity = clamp(iOpacity, 0.0f, 1.0f);

    37 

    38     if(opacity > EPSILON)

    39         {

    40         DrawEffect(aEngine, destImage, srcImage, aSourceRect.Width(), aSourceRect.Height());

    41         }

    42     else

    43         {

    44 //        VGint width = vgGetParameteri(srcImage, VG_IMAGE_WIDTH);

    45 //        VGint height = vgGetParameteri(srcImage, VG_IMAGE_HEIGHT);

    46         VGint width = aSourceRect.Width();

    47         VGint height = aSourceRect.Height();

    48         vgCopyImage(destImage, 0, 0, srcImage, 0, 0, width, height, VG_FALSE);

    49         }

    50 

    51     HUIFX_VG_INVARIANT();    

    52     (reinterpret_cast<CHuiFxVg10RenderbufferBase*>(&aSource))->ReleaseSubImage(srcImage);

    53     (reinterpret_cast<CHuiFxVg10RenderbufferBase*>(&aTarget))->ReleaseSubImage(destImage);

    54     aTarget.UnbindAsTexture();

    55     aSource.UnbindAsTexture();

    56     

    57     return wasEnoughMemory();

    58     }

    59 

    60 // any unexpected error results in panic

    61 TBool CHuiFxVg10FilterBase::wasEnoughMemory()

    62     {

    63 #ifndef _DEBUG

    64 	// vgGetError() -call is REALLY SLOW on HW, remove for now at least,

    65 	// since nobody is really even checking this return value nor acting on it..

    66     TBool success = ETrue;

    67 #else

    68     TBool success = EFalse;

    69     const VGErrorCode vgError = vgGetError();

    70     

    71     switch(vgError)

    72         {

    73         case VG_NO_ERROR : 

    74             success = ETrue;

    75             break;

    76             

    77         case VG_OUT_OF_MEMORY_ERROR : 

    78             success = EFalse;

    79             break;

    80             

    81         default :

    82             success = EFalse;

    83             // should print an error instead of panicking

    84             HUI_DEBUG1(_L("CHuiFxVg10FilterBase::wasEnoughMemory() vgError -- %04x"), vgError);

    85 //            User::Panic(KLitPanicMessage, vgError);

    86         }

    87 #endif

    88     return success;

    89     }