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32bitFill.cpp
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// CG32bitImage.cpp
//
// CG32bitImage Class
// Copyright (c) 2015 by Kronosaur Productions, LLC. All Rights Reserved.
#include "PreComp.h"
const int TABLE_FILL_THRESHOLD = 32768;
void CG32bitImage::Fill (int x, int y, int cxWidth, int cyHeight, CG32bitPixel Value)
// Fill
//
// Fill the buffer
{
int i;
// Make sure we're in bounds
if (!AdjustCoords(NULL, NULL, 0, 0,
&x, &y,
&cxWidth, &cyHeight))
return;
BYTE byOpacity = Value.GetAlpha();
if (byOpacity == 0x00)
return;
// Solid Fill
if (byOpacity == 0xff)
{
DWORD dwWidth8 = (cxWidth / 8) * 8;
CG32bitPixel *pDestRow = GetPixelPos(x, y);
CG32bitPixel *pDestRowEnd = GetPixelPos(x, y + cyHeight);
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDest = pDestRow;
CG32bitPixel *pDestBlockEnd = pDestRow + dwWidth8;
CG32bitPixel *pDestEnd = pDestRow + cxWidth;
// Unrolled loop
while (pDest < pDestBlockEnd)
{
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
}
// Remainder
while (pDest < pDestEnd)
*pDest++ = Value;
pDestRow = NextRow(pDestRow);
}
}
// Transparent Fill
else if (cxWidth * cyHeight < TABLE_FILL_THRESHOLD)
{
BYTE *pAlpha = CG32bitPixel::AlphaTable(byOpacity);
BYTE byRed = pAlpha[Value.GetRed()];
BYTE byGreen = pAlpha[Value.GetGreen()];
BYTE byBlue = pAlpha[Value.GetBlue()];
BYTE *pAlphaInv = CG32bitPixel::AlphaTable(byOpacity ^ 0xff); // Equivalent to 255 - byAlpha
CG32bitPixel *pDestRow = GetPixelPos(x, y);
CG32bitPixel *pDestRowEnd = GetPixelPos(x, y + cyHeight);
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDest = pDestRow;
CG32bitPixel *pDestEnd = pDestRow + cxWidth;
while (pDest < pDestEnd)
{
BYTE byRedResult = pAlphaInv[pDest->GetRed()] + byRed;
BYTE byGreenResult = pAlphaInv[pDest->GetGreen()] + byGreen;
BYTE byBlueResult = pAlphaInv[pDest->GetBlue()] + byBlue;
*pDest++ = CG32bitPixel(byRedResult, byGreenResult, byBlueResult);
}
pDestRow = NextRow(pDestRow);
}
}
// If we're filling TABLE_FILL_THRESHOLD or more blended colors, then it's faster
// to build a table first.
else
{
BYTE byRedTable[256];
BYTE byGreenTable[256];
BYTE byBlueTable[256];
BYTE *pAlpha = CG32bitPixel::AlphaTable(byOpacity);
BYTE byRed = pAlpha[Value.GetRed()];
BYTE byGreen = pAlpha[Value.GetGreen()];
BYTE byBlue = pAlpha[Value.GetBlue()];
BYTE *pAlphaInv = CG32bitPixel::AlphaTable(byOpacity ^ 0xff); // Equivalent to 255 - byAlpha
for (i = 0; i < 256; i++)
{
byRedTable[i] = pAlphaInv[i] + byRed;
byGreenTable[i] = pAlphaInv[i] + byGreen;
byBlueTable[i] = pAlphaInv[i] + byBlue;
}
CG32bitPixel *pDestRow = GetPixelPos(x, y);
CG32bitPixel *pDestRowEnd = GetPixelPos(x, y + cyHeight);
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDest = pDestRow;
CG32bitPixel *pDestEnd = pDestRow + cxWidth;
while (pDest < pDestEnd)
*pDest++ = CG32bitPixel(byRedTable[pDest->GetRed()], byGreenTable[pDest->GetGreen()], byBlueTable[pDest->GetBlue()]);
pDestRow = NextRow(pDestRow);
}
}
}
void CG32bitImage::Fill (CG32bitPixel Value)
// Fill
//
// Fills the entire buffer buffer
{
int i;
BYTE byOpacity = Value.GetAlpha();
if (byOpacity == 0x00)
return;
// Solid Fill
if (byOpacity == 0xff)
{
CG32bitPixel *pDest = GetPixelPos(0, 0);
CG32bitPixel *pDestEnd = GetPixelPos(0, GetHeight());
DWORD dwBlock = ((pDestEnd - pDest) / 8) * 8;
CG32bitPixel *pDestBlockEnd = pDest + dwBlock;
// Unrolled
while (pDest < pDestBlockEnd)
{
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
}
// Remainder
while (pDest < pDestEnd)
*pDest++ = Value;
}
// Transparent Fill
else if (GetWidth() * GetHeight() < TABLE_FILL_THRESHOLD)
{
BYTE *pAlpha = CG32bitPixel::AlphaTable(byOpacity);
BYTE byRed = pAlpha[Value.GetRed()];
BYTE byGreen = pAlpha[Value.GetGreen()];
BYTE byBlue = pAlpha[Value.GetBlue()];
BYTE *pAlphaInv = CG32bitPixel::AlphaTable(byOpacity ^ 0xff); // Equivalent to 255 - byAlpha
CG32bitPixel *pDest = GetPixelPos(0, 0);
CG32bitPixel *pDestEnd = GetPixelPos(0, GetHeight());
while (pDest < pDestEnd)
{
BYTE byRedResult = pAlphaInv[pDest->GetRed()] + byRed;
BYTE byGreenResult = pAlphaInv[pDest->GetGreen()] + byGreen;
BYTE byBlueResult = pAlphaInv[pDest->GetBlue()] + byBlue;
*pDest++ = CG32bitPixel(byRedResult, byGreenResult, byBlueResult);
}
}
// If we're filling TABLE_FILL_THRESHOLD or more blended colors, then it's faster
// to build a table first.
else
{
BYTE byRedTable[256];
BYTE byGreenTable[256];
BYTE byBlueTable[256];
BYTE *pAlpha = CG32bitPixel::AlphaTable(byOpacity);
BYTE byRed = pAlpha[Value.GetRed()];
BYTE byGreen = pAlpha[Value.GetGreen()];
BYTE byBlue = pAlpha[Value.GetBlue()];
BYTE *pAlphaInv = CG32bitPixel::AlphaTable(byOpacity ^ 0xff); // Equivalent to 255 - byAlpha
for (i = 0; i < 256; i++)
{
byRedTable[i] = pAlphaInv[i] + byRed;
byGreenTable[i] = pAlphaInv[i] + byGreen;
byBlueTable[i] = pAlphaInv[i] + byBlue;
}
// Fill
CG32bitPixel *pDest = GetPixelPos(0, 0);
CG32bitPixel *pDestEnd = GetPixelPos(0, GetHeight());
while (pDest < pDestEnd)
*pDest++ = CG32bitPixel(byRedTable[pDest->GetRed()], byGreenTable[pDest->GetGreen()], byBlueTable[pDest->GetBlue()]);
}
}
void CG32bitImage::FillMask (int xSrc, int ySrc, int cxWidth, int cyHeight, const CG32bitImage &Source, CG32bitPixel rgbColor, int xDest, int yDest)
// FillMask
//
// Fills the source mask with the given color
{
// Make sure we're in bounds
if (!AdjustCoords(&xSrc, &ySrc, Source.GetWidth(), Source.GetHeight(),
&xDest, &yDest,
&cxWidth, &cyHeight))
return;
// Compute opacity
BYTE byOpacity = rgbColor.GetAlpha();
if (byOpacity == 0x00)
return;
CG32bitPixel *pSrcRow = Source.GetPixelPos(xSrc, ySrc);
CG32bitPixel *pSrcRowEnd = Source.GetPixelPos(xSrc, ySrc + cyHeight);
CG32bitPixel *pDestRow = GetPixelPos(xDest, yDest);
// If full opacity, then optimize
if (byOpacity == 0xff)
{
switch (Source.GetAlphaType())
{
case alphaNone:
while (pSrcRow < pSrcRowEnd)
{
CG32bitPixel *pSrcPos = pSrcRow;
CG32bitPixel *pSrcPosEnd = pSrcRow + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pSrcPos < pSrcPosEnd)
{
*pDestPos++ = rgbColor;
pSrcPos++;
}
pSrcRow = Source.NextRow(pSrcRow);
pDestRow = NextRow(pDestRow);
}
break;
case alpha1:
while (pSrcRow < pSrcRowEnd)
{
CG32bitPixel *pSrcPos = pSrcRow;
CG32bitPixel *pSrcPosEnd = pSrcRow + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pSrcPos < pSrcPosEnd)
{
if (pSrcPos->GetAlpha())
*pDestPos = rgbColor;
pSrcPos++;
pDestPos++;
}
pSrcRow = Source.NextRow(pSrcRow);
pDestRow = NextRow(pDestRow);
}
break;
case alpha8:
{
BYTE colorRed = rgbColor.GetRed();
BYTE colorGreen = rgbColor.GetGreen();
BYTE colorBlue = rgbColor.GetBlue();
while (pSrcRow < pSrcRowEnd)
{
CG32bitPixel *pSrcPos = pSrcRow;
CG32bitPixel *pSrcPosEnd = pSrcRow + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pSrcPos < pSrcPosEnd)
{
BYTE byAlpha = pSrcPos->GetAlpha();
if (byAlpha == 0x00)
;
else if (byAlpha == 0xff)
*pDestPos = rgbColor;
else
{
BYTE *pAlpha = CG32bitPixel::AlphaTable(byAlpha);
BYTE *pAlphaInv = CG32bitPixel::AlphaTable(byAlpha ^ 0xff); // Equivalent to 255 - byAlpha
BYTE byRedResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetRed()] + (WORD)pAlpha[colorRed]));
BYTE byGreenResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetGreen()] + (WORD)pAlpha[colorGreen]));
BYTE byBlueResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetBlue()] + (WORD)pAlpha[colorBlue]));
*pDestPos = CG32bitPixel(byRedResult, byGreenResult, byBlueResult);
}
pSrcPos++;
pDestPos++;
}
pSrcRow = Source.NextRow(pSrcRow);
pDestRow = NextRow(pDestRow);
}
break;
}
default:
// Not Yet Implemented
ASSERT(false);
}
}
// Otherwise, it's harder
else
{
BYTE colorRed = rgbColor.GetRed();
BYTE colorGreen = rgbColor.GetGreen();
BYTE colorBlue = rgbColor.GetBlue();
switch (Source.GetAlphaType())
{
case alphaNone:
{
BYTE *pAlpha = CG32bitPixel::AlphaTable(byOpacity);
BYTE *pAlphaInv = CG32bitPixel::AlphaTable(byOpacity ^ 0xff); // Equivalent to 255 - byAlpha
while (pSrcRow < pSrcRowEnd)
{
CG32bitPixel *pSrcPos = pSrcRow;
CG32bitPixel *pSrcPosEnd = pSrcRow + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pSrcPos < pSrcPosEnd)
{
BYTE byRedResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetRed()] + (WORD)pAlpha[colorRed]));
BYTE byGreenResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetGreen()] + (WORD)pAlpha[colorGreen]));
BYTE byBlueResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetBlue()] + (WORD)pAlpha[colorBlue]));
*pDestPos = CG32bitPixel(byRedResult, byGreenResult, byBlueResult);
pSrcPos++;
pDestPos++;
}
pSrcRow = Source.NextRow(pSrcRow);
pDestRow = NextRow(pDestRow);
}
break;
}
case alpha1:
{
BYTE *pAlpha = CG32bitPixel::AlphaTable(byOpacity);
BYTE *pAlphaInv = CG32bitPixel::AlphaTable(byOpacity ^ 0xff); // Equivalent to 255 - byAlpha
while (pSrcRow < pSrcRowEnd)
{
CG32bitPixel *pSrcPos = pSrcRow;
CG32bitPixel *pSrcPosEnd = pSrcRow + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pSrcPos < pSrcPosEnd)
{
if (pSrcPos->GetAlpha())
{
BYTE byRedResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetRed()] + (WORD)pAlpha[colorRed]));
BYTE byGreenResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetGreen()] + (WORD)pAlpha[colorGreen]));
BYTE byBlueResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetBlue()] + (WORD)pAlpha[colorBlue]));
*pDestPos = CG32bitPixel(byRedResult, byGreenResult, byBlueResult);
}
pSrcPos++;
pDestPos++;
}
pSrcRow = Source.NextRow(pSrcRow);
pDestRow = NextRow(pDestRow);
}
break;
}
case alpha8:
{
BYTE *pOpacityMap[256];
BYTE *pOpacityInvMap[256];
for (DWORD i = 0; i < 256; i++)
{
BYTE byAlpha = (BYTE)((i * byOpacity) / 255);
BYTE byAlphaInv = (byAlpha ^ 0xff);
pOpacityMap[i] = CG32bitPixel::AlphaTable(byAlpha);
pOpacityInvMap[i] = CG32bitPixel::AlphaTable(byAlphaInv);
}
while (pSrcRow < pSrcRowEnd)
{
CG32bitPixel *pSrcPos = pSrcRow;
CG32bitPixel *pSrcPosEnd = pSrcRow + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pSrcPos < pSrcPosEnd)
{
BYTE bySrcAlpha = pSrcPos->GetAlpha();
if (bySrcAlpha == 0x00)
;
else
{
BYTE *pAlpha = pOpacityMap[bySrcAlpha];
BYTE *pAlphaInv = pOpacityInvMap[bySrcAlpha];
BYTE byRedResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetRed()] + (WORD)pAlpha[colorRed]));
BYTE byGreenResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetGreen()] + (WORD)pAlpha[colorGreen]));
BYTE byBlueResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetBlue()] + (WORD)pAlpha[colorBlue]));
*pDestPos = CG32bitPixel(byRedResult, byGreenResult, byBlueResult);
}
pSrcPos++;
pDestPos++;
}
pSrcRow = Source.NextRow(pSrcRow);
pDestRow = NextRow(pDestRow);
}
break;
}
default:
// Not Yet Implemented
ASSERT(false);
}
}
}
void CG32bitImage::FillMask (int xSrc, int ySrc, int cxWidth, int cyHeight, const CG16bitImage &Source, CG32bitPixel rgbColor, int xDest, int yDest)
// FillMask
//
// Fills the source mask with the given color
{
// Make sure we're in bounds
if (!AdjustCoords(&xSrc, &ySrc, Source.GetWidth(), Source.GetHeight(),
&xDest, &yDest,
&cxWidth, &cyHeight))
return;
// Compute opacity
DWORD dwOpacity = rgbColor.GetAlpha();
// If we've got an alpha mask then blt using the transparency
// information.
CG32bitPixel *pDestRow = GetPixelPos(xDest, yDest);
if (Source.HasAlpha())
{
if (dwOpacity == 0xff)
{
BYTE *pAlphaSrcRow = Source.GetAlphaValue(xSrc, ySrc);
BYTE *pAlphaSrcRowEnd = Source.GetAlphaValue(xSrc, ySrc + cyHeight);
while (pAlphaSrcRow < pAlphaSrcRowEnd)
{
BYTE *pAlphaPos = pAlphaSrcRow;
BYTE *pAlphaPosEnd = pAlphaPos + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pAlphaPos < pAlphaPosEnd)
if (*pAlphaPos == 0x00)
{
pDestPos++;
pAlphaPos++;
}
else if (*pAlphaPos == 0xff)
{
*pDestPos++ = rgbColor;
pAlphaPos++;
}
else
{
*pDestPos++ = CG32bitPixel::Blend(*pDestPos, rgbColor, *pAlphaPos);
pAlphaPos++;
}
pDestRow = NextRow(pDestRow);
pAlphaSrcRow = Source.NextAlphaRow(pAlphaSrcRow);
}
}
else
{
// If we've got some transparency, built a table to map opacity
BYTE dwOpacityMap[256];
for (DWORD i = 0; i < 256; i++)
dwOpacityMap[i] = (BYTE)((i * dwOpacity) >> 8);
BYTE *pAlphaSrcRow = Source.GetAlphaValue(xSrc, ySrc);
BYTE *pAlphaSrcRowEnd = Source.GetAlphaValue(xSrc, ySrc + cyHeight);
while (pAlphaSrcRow < pAlphaSrcRowEnd)
{
BYTE *pAlphaPos = pAlphaSrcRow;
BYTE *pAlphaPosEnd = pAlphaPos + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pAlphaPos < pAlphaPosEnd)
if (*pAlphaPos == 0x00)
{
pDestPos++;
pAlphaPos++;
}
else if (*pAlphaPos == 0xff)
{
*pDestPos++ = CG32bitPixel::Blend(*pDestPos, rgbColor);
pAlphaPos++;
}
else
{
*pDestPos++ = CG32bitPixel::Blend(*pDestPos, rgbColor, dwOpacityMap[*pAlphaPos]);
pAlphaPos++;
}
pDestRow = NextRow(pDestRow);
pAlphaSrcRow = Source.NextAlphaRow(pAlphaSrcRow);
}
}
}
else if (Source.HasRGB())
{
WORD *pSrcRow = Source.GetPixel(Source.GetRowStart(ySrc), xSrc);
WORD *pSrcRowEnd = Source.GetPixel(Source.GetRowStart(ySrc + cyHeight), xSrc);
WORD wBackColor = Source.GetBackColor();
if (dwOpacity == 0xff)
{
while (pSrcRow < pSrcRowEnd)
{
WORD *pSrcPos = pSrcRow;
WORD *pSrcPosEnd = pSrcRow + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pSrcPos < pSrcPosEnd)
if (*pSrcPos++ != wBackColor)
*pDestPos++ = rgbColor;
else
pDestPos++;
pSrcRow = Source.NextRow(pSrcRow);
pDestRow = NextRow(pDestRow);
}
}
else
{
while (pSrcRow < pSrcRowEnd)
{
WORD *pSrcPos = pSrcRow;
WORD *pSrcPosEnd = pSrcRow + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pSrcPos < pSrcPosEnd)
if (*pSrcPos++ != wBackColor)
*pDestPos++ = CG32bitPixel::Blend(*pDestPos, rgbColor);
else
pDestPos++;
pSrcRow = Source.NextRow(pSrcRow);
pDestRow = NextRow(pDestRow);
}
}
}
}
void CG32bitImage::FillMask (int xSrc, int ySrc, int cxWidth, int cyHeight, const CG8bitImage &Source, CG32bitPixel rgbColor, int xDest, int yDest)
// FillMask
//
// Fills the source mask with the given color
{
// Make sure we're in bounds
if (!AdjustCoords(&xSrc, &ySrc, Source.GetWidth(), Source.GetHeight(),
&xDest, &yDest,
&cxWidth, &cyHeight))
return;
// Compute opacity
BYTE byOpacity = rgbColor.GetAlpha();
if (byOpacity == 0x00)
return;
BYTE *pSrcRow = Source.GetPixelPos(xSrc, ySrc);
BYTE *pSrcRowEnd = Source.GetPixelPos(xSrc, ySrc + cyHeight);
CG32bitPixel *pDestRow = GetPixelPos(xDest, yDest);
// If full opacity, then optimize
if (byOpacity == 0xff)
{
BYTE colorRed = rgbColor.GetRed();
BYTE colorGreen = rgbColor.GetGreen();
BYTE colorBlue = rgbColor.GetBlue();
while (pSrcRow < pSrcRowEnd)
{
BYTE *pSrcPos = pSrcRow;
BYTE *pSrcPosEnd = pSrcRow + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pSrcPos < pSrcPosEnd)
{
BYTE byAlpha = *pSrcPos;
if (byAlpha == 0x00)
;
else if (byAlpha == 0xff)
*pDestPos = rgbColor;
else
{
BYTE *pAlpha = CG32bitPixel::AlphaTable(byAlpha);
BYTE *pAlphaInv = CG32bitPixel::AlphaTable(byAlpha ^ 0xff); // Equivalent to 255 - byAlpha
BYTE byRedResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetRed()] + (WORD)pAlpha[colorRed]));
BYTE byGreenResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetGreen()] + (WORD)pAlpha[colorGreen]));
BYTE byBlueResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetBlue()] + (WORD)pAlpha[colorBlue]));
*pDestPos = CG32bitPixel(byRedResult, byGreenResult, byBlueResult);
}
pSrcPos++;
pDestPos++;
}
pSrcRow = Source.NextRow(pSrcRow);
pDestRow = NextRow(pDestRow);
}
}
// Otherwise, it's harder
else
{
BYTE colorRed = rgbColor.GetRed();
BYTE colorGreen = rgbColor.GetGreen();
BYTE colorBlue = rgbColor.GetBlue();
BYTE *pOpacityMap[256];
BYTE *pOpacityInvMap[256];
for (DWORD i = 0; i < 256; i++)
{
BYTE byAlpha = (BYTE)((i * byOpacity) / 255);
BYTE byAlphaInv = (byAlpha ^ 0xff);
pOpacityMap[i] = CG32bitPixel::AlphaTable(byAlpha);
pOpacityInvMap[i] = CG32bitPixel::AlphaTable(byAlphaInv);
}
while (pSrcRow < pSrcRowEnd)
{
BYTE *pSrcPos = pSrcRow;
BYTE *pSrcPosEnd = pSrcRow + cxWidth;
CG32bitPixel *pDestPos = pDestRow;
while (pSrcPos < pSrcPosEnd)
{
BYTE bySrcAlpha = *pSrcPos;
if (bySrcAlpha == 0x00)
;
else
{
BYTE *pAlpha = pOpacityMap[bySrcAlpha];
BYTE *pAlphaInv = pOpacityInvMap[bySrcAlpha];
BYTE byRedResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetRed()] + (WORD)pAlpha[colorRed]));
BYTE byGreenResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetGreen()] + (WORD)pAlpha[colorGreen]));
BYTE byBlueResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetBlue()] + (WORD)pAlpha[colorBlue]));
*pDestPos = CG32bitPixel(byRedResult, byGreenResult, byBlueResult);
}
pSrcPos++;
pDestPos++;
}
pSrcRow = Source.NextRow(pSrcRow);
pDestRow = NextRow(pDestRow);
}
}
}
void CG32bitImage::FillMaskScaled (int xSrc, int ySrc, int cxSrc, int cySrc, const CG8bitImage &Source, CG32bitPixel rgbColor, int xDest, int yDest, int cxDest, int cyDest)
// FillMaskScaled
//
// Fills the source mask with the given color
{
if (cxDest <= 0 || cyDest <= 0 || cxSrc <= 0 || cySrc <= 0)
return;
// Compute opacity
BYTE byOpacity = rgbColor.GetAlpha();
if (byOpacity == 0x00)
return;
BYTE colorRed = rgbColor.GetRed();
BYTE colorGreen = rgbColor.GetGreen();
BYTE colorBlue = rgbColor.GetBlue();
// Compute the increment on the source to cover the entire destination
Metric xSrcInc = (Metric)cxSrc / (Metric)cxDest;
Metric ySrcInc = (Metric)cySrc / (Metric)cyDest;
// Make sure we're in bounds
Metric xSrcStart = (Metric)xSrc;
Metric ySrcStart = (Metric)ySrc;
if (!AdjustScaledCoords(&xSrcStart, &ySrcStart, Source.GetWidth(), Source.GetHeight(),
xSrcInc, ySrcInc,
&xDest, &yDest,
&cxDest, &cyDest))
return;
// Do the blt
CG32bitPixel *pDestRow = GetPixelPos(xDest, yDest);
CG32bitPixel *pDestRowEnd = GetPixelPos(xDest, yDest + cyDest);
// If full opacity, then optimize
if (byOpacity == 0xff)
{
Metric y = ySrcStart;
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDestPos = pDestRow;
CG32bitPixel *pDestPosEnd = pDestPos + cxDest;
BYTE *pSrcRow = Source.GetPixelPos((int)xSrcStart, (int)y);
Metric xOffset = 0.0;
while (pDestPos < pDestPosEnd)
{
BYTE byAlpha = *(pSrcRow + (int)xOffset);
if (byAlpha == 0x00)
;
else if (byAlpha == 0xff)
*pDestPos = rgbColor;
else
{
BYTE *pAlpha = CG32bitPixel::AlphaTable(byAlpha);
BYTE *pAlphaInv = CG32bitPixel::AlphaTable(byAlpha ^ 0xff); // Equivalent to 255 - byAlpha
BYTE byRedResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetRed()] + (WORD)pAlpha[colorRed]));
BYTE byGreenResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetGreen()] + (WORD)pAlpha[colorGreen]));
BYTE byBlueResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetBlue()] + (WORD)pAlpha[colorBlue]));
*pDestPos = CG32bitPixel(byRedResult, byGreenResult, byBlueResult);
}
pDestPos++;
xOffset += xSrcInc;
}
y += ySrcInc;
pDestRow = NextRow(pDestRow);
}
}
else
{
BYTE *pOpacityMap[256];
BYTE *pOpacityInvMap[256];
for (DWORD i = 0; i < 256; i++)
{
BYTE byAlpha = (BYTE)((i * byOpacity) / 255);
BYTE byAlphaInv = (byAlpha ^ 0xff);
pOpacityMap[i] = CG32bitPixel::AlphaTable(byAlpha);
pOpacityInvMap[i] = CG32bitPixel::AlphaTable(byAlphaInv);
}
Metric y = ySrcStart;
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDestPos = pDestRow;
CG32bitPixel *pDestPosEnd = pDestPos + cxDest;
BYTE *pSrcRow = Source.GetPixelPos((int)xSrcStart, (int)y);
Metric xOffset = 0.0;
while (pDestPos < pDestPosEnd)
{
BYTE byAlpha = *(pSrcRow + (int)xOffset);
if (byAlpha == 0x00)
;
else
{
BYTE *pAlpha = pOpacityMap[byAlpha];
BYTE *pAlphaInv = pOpacityInvMap[byAlpha];
BYTE byRedResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetRed()] + (WORD)pAlpha[colorRed]));
BYTE byGreenResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetGreen()] + (WORD)pAlpha[colorGreen]));
BYTE byBlueResult = (BYTE)Min((WORD)0xff, (WORD)(pAlphaInv[pDestPos->GetBlue()] + (WORD)pAlpha[colorBlue]));
*pDestPos = CG32bitPixel(byRedResult, byGreenResult, byBlueResult);
}
pDestPos++;
xOffset += xSrcInc;
}
y += ySrcInc;
pDestRow = NextRow(pDestRow);
}
}
}
void CG32bitImage::Set (CG32bitPixel Value)
// Set
//
// Sets the entire image to the given value.
{
CG32bitPixel *pDest = GetPixelPos(0, 0);
CG32bitPixel *pDestEnd = GetPixelPos(0, m_cyHeight);
DWORD dwBlock = ((pDestEnd - pDest) / 8) * 8;
CG32bitPixel *pDestBlockEnd = pDest + dwBlock;
// Unrolled
while (pDest < pDestBlockEnd)
{
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
}
// Remainder
while (pDest < pDestEnd)
*pDest++ = Value;
}
void CG32bitImage::Set (int x, int y, int cxWidth, int cyHeight, CG32bitPixel Value)
// Set
//
// Sets all the pixels in the given rect to the given value.
{
CG32bitPixel *pDestRow = GetPixelPos(x, y);
CG32bitPixel *pDestRowEnd = GetPixelPos(x, y + cyHeight);
DWORD dwBlock = (cxWidth / 8) * 8;
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDest = pDestRow;
CG32bitPixel *pDestBlockEnd = pDestRow + dwBlock;
CG32bitPixel *pDestEnd = pDestRow + cxWidth;
// Unrolled
while (pDest < pDestBlockEnd)
{
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
*pDest++ = Value;
}
// Remainder
while (pDest < pDestEnd)
*pDest++ = Value;
pDestRow = NextRow(pDestRow);
}
}
void CG32bitImage::Set (CG32bitImage &Src)
// Set
//
// Copies all the pixels from Src. This is an optimized version of Blt in which
// we assume that the images are of the same dimension.
{
if (Src.GetWidth() != GetWidth()
|| Src.GetHeight() != GetHeight())
return;
CG32bitPixel *pSrc = Src.GetPixelPos(0, 0);
CG32bitPixel *pDest = GetPixelPos(0, 0);
CG32bitPixel *pDestEnd = GetPixelPos(0, m_cyHeight);
DWORD dwBlock = ((pDestEnd - pDest) / 8) * 8;
CG32bitPixel *pDestBlockEnd = pDest + dwBlock;
// Unrolled
while (pDest < pDestBlockEnd)
{
*pDest++ = *pSrc++;
*pDest++ = *pSrc++;
*pDest++ = *pSrc++;
*pDest++ = *pSrc++;
*pDest++ = *pSrc++;
*pDest++ = *pSrc++;
*pDest++ = *pSrc++;
*pDest++ = *pSrc++;
}
// Remainder
while (pDest < pDestEnd)
*pDest++ = *pSrc++;
}
void CG32bitImage::SetMask (int xSrc, int ySrc, int cxWidth, int cyHeight, const CG32bitImage &Source, CG32bitPixel rgbColor, int xDest, int yDest)
// SetMask
//
// Sets all pixels in the source mask to the given color
{
// Make sure we're in bounds
if (!AdjustCoords(&xSrc, &ySrc, Source.GetWidth(), Source.GetHeight(),
&xDest, &yDest,
&cxWidth, &cyHeight))
return;
// Compute opacity
BYTE byOpacity = rgbColor.GetAlpha();
CG32bitPixel *pSrcRow = Source.GetPixelPos(xSrc, ySrc);