author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 09 Jun 2010 10:41:25 +0300 | |
branch | RCL_3 |
changeset 34 | 3a60ebea00d0 |
parent 0 | 15bf7259bb7c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 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: |
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* |
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*/ |
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|
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#include "HuiFxVg10BevelFilter.h" |
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#include "HuiFxVg10RenderbufferBase.h" |
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#include "HuiFxConstants.h" |
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CHuiFxVg10BevelFilter* CHuiFxVg10BevelFilter::NewL() |
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{ |
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CHuiFxVg10BevelFilter* self = new (ELeave) CHuiFxVg10BevelFilter(); |
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CleanupStack::PushL( self ); |
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self->ConstructL(); |
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CleanupStack::Pop( self ); |
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return self; |
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} |
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void CHuiFxVg10BevelFilter::ConstructL() |
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{ |
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CHuiFxFilter::ConstructL(); |
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iOutlineX = 1.0; |
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iOutlineY = 1.0; |
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iSteepness = 20.0; |
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/* iRed = 0.0f; |
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iGreen = 0.0f; |
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iBlue = 0.0f;*/ |
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RegisterParameterL(KLitOutlineX, &iOutlineX); |
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RegisterParameterL(KLitOutlineY, &iOutlineY); |
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RegisterParameterL(KLitSteepness, &iSteepness); |
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/* RegisterParameterL(KLitRed, &iRed); |
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RegisterParameterL(KLitGreen, &iGreen); |
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RegisterParameterL(KLitBlue, &iBlue);*/ |
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} |
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CHuiFxVg10BevelFilter *CHuiFxVg10BevelFilter::CloneL() const |
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{ |
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CHuiFxVg10BevelFilter *filter = new(ELeave)CHuiFxVg10BevelFilter; |
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filter->CHuiFxFilter::CopyFromL(this); |
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filter->iOutlineX = iOutlineX; |
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filter->iOutlineY = iOutlineY; |
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filter->iSteepness = iSteepness; |
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filter->CopyParameterL(KLitOutlineX, &filter->iOutlineX, this); |
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filter->CopyParameterL(KLitOutlineY, &filter->iOutlineY, this); |
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filter->CopyParameterL(KLitSteepness, &filter->iSteepness, this); |
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return filter; |
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} |
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void CHuiFxVg10BevelFilter::DrawEffect(CHuiFxEngine& aEngine, VGImage aTargetImage, VGImage aSourceImage, TInt aWidth, TInt aHeight, TBool /*aHasSurface*/) |
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{ |
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VGfloat outline_x = clamp(iOutlineX, EPSILON, 128.0f); |
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VGfloat outline_y = clamp(iOutlineY, EPSILON, 128.0f); |
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VGubyte steepness = (VGubyte)clamp(iSteepness, 0.0f, 255.0f); |
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// VGint width = vgGetParameteri(aSourceImage, VG_IMAGE_WIDTH); |
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// VGint height = vgGetParameteri(aSourceImage, VG_IMAGE_HEIGHT); |
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VGint width = aWidth; |
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VGint height = aHeight; |
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if((outline_x > EPSILON && outline_y > EPSILON) || steepness == 0) |
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{ |
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// get an aux buffer |
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CHuiFxRenderbuffer* aux1Buffer = aEngine.AcquireRenderbuffer(TSize(width, height)); |
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CHuiFxRenderbuffer* aux2Buffer = aEngine.AcquireRenderbuffer(TSize(width, height)); |
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if (!aux1Buffer || !aux2Buffer) // can't render the effect |
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{ |
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return; |
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} |
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aux1Buffer->BindAsTexture(ERenderbufferUsageReadWrite); |
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aux2Buffer->BindAsTexture(ERenderbufferUsageReadWrite); |
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|
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VGImage aux1Image = (reinterpret_cast<CHuiFxVg10RenderbufferBase*>(aux1Buffer)->Image()); |
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VGImage aux2Image = (reinterpret_cast<CHuiFxVg10RenderbufferBase*>(aux2Buffer)->Image()); |
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VGuint lut[256]; |
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int threshold = 1; |
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// generate ramp for alpha channel. the bigger the steepness the more solid the outline. |
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for(int i = 0; i < threshold; i++) |
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{ |
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lut[i] = 0x00000000; // | i; |
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} |
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for(int i = threshold; i < 256; i++) |
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{ |
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lut[i] = 0xffffffff; // | i; |
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} |
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vgLookupSingle(aux1Image, aSourceImage, lut, VG_ALPHA, VG_TRUE, VG_FALSE); |
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// TODO: pixel relative parameters |
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// the variables are commented out because they are not used yet |
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102 |
/* |
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VGint shiftX = 0; |
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VGint shiftY = 0; |
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// VGshort kernel[9] = {0, -1, -2, 1, 0, -1, 2, 1, 0}; |
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VGshort kernel[9] = {1, 0, -1, 2, 0, -2, 1, 0, -1}; |
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VGfloat scale = 0.5f; |
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VGfloat bias = 0.5f; |
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*/ |
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110 |
|
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// vgConvolve(aux2Image, aux1Image, 3, 3, shiftX, shiftY, kernel, scale, bias, VG_TILE_PAD); |
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112 |
|
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113 |
/* for(int i = 0; i < 126; i++) |
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114 |
{ |
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lut[i] = 0x000000ff | i << 24 | i << 16 | i << 8 | i; |
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} |
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*/ for(int i = 0; i < 10; i++) |
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118 |
{ |
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lut[i] = 0x00000000 | i << 24 | i << 16 | i << 8 | 255 - i * 3; |
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120 |
} |
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for(int i = 20; i < 255; i++) |
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122 |
{ |
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lut[i] = 0x00000000; // | i << 24 | i << 16 | i << 8 | i; |
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124 |
} |
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125 |
|
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// vgLookupSingle(aux1Image, aux2Image, lut, VG_ALPHA, VG_TRUE, VG_FALSE); |
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127 |
|
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// vgGaussianBlur(aTargetImage, aux1Image, outline_x, outline_y, VG_TILE_PAD); |
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129 |
|
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aux1Buffer->UnbindAsTexture(); |
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aux2Buffer->UnbindAsTexture(); |
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aEngine.ReleaseRenderbuffer(aux1Buffer); |
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aEngine.ReleaseRenderbuffer(aux2Buffer); |
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134 |
} |
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else // fast path --- just copy |
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136 |
{ |
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vgCopyImage(aTargetImage, 0, 0, aSourceImage, 0, 0, width, height, VG_FALSE); |
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} |
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} |