Kill FXSYS_mem{cpy,cmp,set.move}{32,8}.

At one point in time, it may have made sense to indicate the
expected alignment of the memory you're about to copy, but that
was last century. The compiler will take care of it just fine.

I stopped short of removing the FXSYS_ wrapper macros entirely.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1179693003.

5 files changed, 43 insertions, 43 deletions

diff --git a/core/src/fxge/dib/fx_dib_composite.cpp b/core/src/fxge/dib/fx_dib_composite.cpp
index aeee91bb4b..b2a72253d8 100644
--- a/core/src/fxge/dib/fx_dib_composite.cpp
+++ b/core/src/fxge/dib/fx_dib_composite.cpp
@@ -297,7 +297,7 @@ void _CompositeRow_Rgb2Mask(uint8_t* dest_scan, const uint8_t* src_scan, int wid
             clip_scan ++;
         }
     } else {
-        FXSYS_memset8(dest_scan, 0xff, width);
+        FXSYS_memset(dest_scan, 0xff, width);
     }
 }
 void _CompositeRow_Argb2Graya(uint8_t* dest_scan, const uint8_t* src_scan, int pixel_count, int blend_type, const uint8_t* clip_scan,
@@ -1331,7 +1331,7 @@ inline void _CompositeRow_Rgb2Rgb_Blend_Clip(uint8_t* dest_scan, const uint8_t*
 inline void _CompositeRow_Rgb2Rgb_NoBlend_NoClip(uint8_t* dest_scan, const uint8_t* src_scan, int width, int dest_Bpp, int src_Bpp)
 {
     if (dest_Bpp == src_Bpp) {
-        FXSYS_memcpy32(dest_scan, src_scan, width * dest_Bpp);
+        FXSYS_memcpy(dest_scan, src_scan, width * dest_Bpp);
         return;
     }
     for (int col = 0; col < width; col ++) {
@@ -3662,7 +3662,7 @@ inline void _ScanlineCompositor_InitSourcePalette(FXDIB_Format src_format, FXDIB
                 int palsize = 1 << (src_format & 0xff);
                 pDestPalette = FX_Alloc(FX_DWORD, palsize);
                 if (isDstCmyk == isSrcCmyk) {
-                    FXSYS_memcpy32(pDestPalette, pSrcPalette, palsize * sizeof(FX_DWORD));
+                    FXSYS_memcpy(pDestPalette, pSrcPalette, palsize * sizeof(FX_DWORD));
                 } else {
                     for (int i = 0; i < palsize; i ++) {
                         FX_CMYK cmyk = pSrcPalette[i];
@@ -4236,7 +4236,7 @@ FX_BOOL CFX_DIBitmap::CompositeRect(int left, int top, int width, int height, FX
         for (int row = rect.top; row < rect.bottom; row ++) {
             uint8_t* dest_scan = m_pBuffer + row * m_Pitch + rect.left;
             if (src_alpha == 255) {
-                FXSYS_memset8(dest_scan, gray, width);
+                FXSYS_memset(dest_scan, gray, width);
             } else
                 for (int col = 0; col < width; col ++) {
                     *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, src_alpha);
@@ -4264,7 +4264,7 @@ FX_BOOL CFX_DIBitmap::CompositeRect(int left, int top, int width, int height, FX
             uint8_t left_flag =  *dest_scan_top & (255 << (8 - left_shift));
             uint8_t right_flag = *dest_scan_top_r & (255 >> right_shift);
             if (width) {
-                FXSYS_memset8(dest_scan_top + 1, index ? 255 : 0, width - 1);
+                FXSYS_memset(dest_scan_top + 1, index ? 255 : 0, width - 1);
                 if (!index) {
                     *dest_scan_top &= left_flag;
                     *dest_scan_top_r &= right_flag;
@@ -4308,7 +4308,7 @@ FX_BOOL CFX_DIBitmap::CompositeRect(int left, int top, int width, int height, FX
             uint8_t* dest_scan = m_pBuffer + row * m_Pitch + rect.left * Bpp;
             uint8_t* dest_scan_alpha = m_pAlphaMask ? (uint8_t*)m_pAlphaMask->GetScanline(row) + rect.left : NULL;
             if (dest_scan_alpha) {
-                FXSYS_memset8(dest_scan_alpha, 0xff, width);
+                FXSYS_memset(dest_scan_alpha, 0xff, width);
             }
             if (Bpp == 4) {
                 FX_DWORD* scan = (FX_DWORD*)dest_scan;
@@ -4352,7 +4352,7 @@ FX_BOOL CFX_DIBitmap::CompositeRect(int left, int top, int width, int height, FX
                     uint8_t back_alpha = *dest_scan_alpha;
                     if (back_alpha == 0) {
                         *dest_scan_alpha++ = src_alpha;
-                        FXSYS_memcpy32(dest_scan, color_p, Bpp);
+                        FXSYS_memcpy(dest_scan, color_p, Bpp);
                         dest_scan += Bpp;
                         continue;
                     }
@@ -4457,7 +4457,7 @@ void CFX_BitmapComposer::DoCompose(uint8_t* dest_scan, const uint8_t* src_scan,
                 m_pAddClipScan[i] = clip_scan[i] * m_BitmapAlpha / 255;
             }
         } else {
-            FXSYS_memset8(m_pAddClipScan, m_BitmapAlpha, dest_width);
+            FXSYS_memset(m_pAddClipScan, m_BitmapAlpha, dest_width);
         }
         clip_scan = m_pAddClipScan;
     }
diff --git a/core/src/fxge/dib/fx_dib_convert.cpp b/core/src/fxge/dib/fx_dib_convert.cpp
index c8de6cae7c..8e96379d37 100644
--- a/core/src/fxge/dib/fx_dib_convert.cpp
+++ b/core/src/fxge/dib/fx_dib_convert.cpp
@@ -287,7 +287,7 @@ FX_BOOL _ConvertBuffer_1bppMask2Gray(uint8_t* dest_buf, int dest_pitch, int widt
     reset_gray = 0x00;
     for (int row = 0; row < height; row ++) {
         uint8_t* dest_scan = dest_buf + row * dest_pitch;
-        FXSYS_memset8(dest_scan, reset_gray, width);
+        FXSYS_memset(dest_scan, reset_gray, width);
         const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row);
         for (int col = src_left; col < src_left + width; col ++) {
             if (src_scan[col / 8] & (1 << (7 - col % 8))) {
@@ -304,7 +304,7 @@ FX_BOOL _ConvertBuffer_8bppMask2Gray(uint8_t* dest_buf, int dest_pitch, int widt
     for (int row = 0; row < height; row ++) {
         uint8_t* dest_scan = dest_buf + row * dest_pitch;
         const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row) + src_left;
-        FXSYS_memcpy32(dest_scan, src_scan, width);
+        FXSYS_memcpy(dest_scan, src_scan, width);
     }
     return TRUE;
 }
@@ -350,7 +350,7 @@ FX_BOOL _ConvertBuffer_1bppPlt2Gray(uint8_t* dest_buf, int dest_pitch, int width
     }
     for (int row = 0; row < height; row ++) {
         uint8_t* dest_scan = dest_buf + row * dest_pitch;
-        FXSYS_memset8(dest_scan, gray[0], width);
+        FXSYS_memset(dest_scan, gray[0], width);
         const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row);
         for (int col = src_left; col < src_left + width; col ++) {
             if (src_scan[col / 8] & (1 << (7 - col % 8))) {
@@ -459,7 +459,7 @@ inline void _ConvertBuffer_IndexCopy(uint8_t* dest_buf, int dest_pitch, int widt
     if (pSrcBitmap->GetBPP() == 1) {
         for (int row = 0; row < height; row ++) {
             uint8_t* dest_scan = dest_buf + row * dest_pitch;
-            FXSYS_memset32(dest_scan, 0, width);
+            FXSYS_memset(dest_scan, 0, width);
             const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row);
             for (int col = src_left; col < src_left + width; col ++) {
                 if (src_scan[col / 8] & (1 << (7 - col % 8))) {
@@ -472,7 +472,7 @@ inline void _ConvertBuffer_IndexCopy(uint8_t* dest_buf, int dest_pitch, int widt
         for (int row = 0; row < height; row ++) {
             uint8_t* dest_scan = dest_buf + row * dest_pitch;
             const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row) + src_left;
-            FXSYS_memcpy32(dest_scan, src_scan, width);
+            FXSYS_memcpy(dest_scan, src_scan, width);
         }
     }
 }
@@ -512,7 +512,7 @@ FX_BOOL _ConvertBuffer_Plt2PltRgb8(uint8_t* dest_buf, int dest_pitch, int width,
                 dst_plt[i] = FXARGB_MAKE(0xff, r, g, b);
             }
         } else {
-            FXSYS_memcpy32(dst_plt, src_plt, plt_size * 4);
+            FXSYS_memcpy(dst_plt, src_plt, plt_size * 4);
         }
     }
     return TRUE;
@@ -570,7 +570,7 @@ inline FX_BOOL _ConvertBuffer_Rgb2PltRgb8_NoTransform(uint8_t* dest_buf, int des
                 }
         }
     }
-    FXSYS_memcpy32(dst_plt, pPalette, sizeof(FX_DWORD) * 256);
+    FXSYS_memcpy(dst_plt, pPalette, sizeof(FX_DWORD) * 256);
     return TRUE;
 }
 FX_BOOL _ConvertBuffer_Rgb2PltRgb8(uint8_t* dest_buf, int dest_pitch, int width, int height,
@@ -738,7 +738,7 @@ FX_BOOL _ConvertBuffer_24bppRgb2Rgb24(uint8_t* dest_buf, int dest_pitch, int wid
         for (int row = 0; row < height; row ++) {
             uint8_t* dest_scan = dest_buf + row * dest_pitch;
             const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row) + src_left * 3;
-            FXSYS_memcpy32(dest_scan, src_scan, width * 3);
+            FXSYS_memcpy(dest_scan, src_scan, width * 3);
         }
     }
     return TRUE;
@@ -1002,7 +1002,7 @@ FX_BOOL CFX_DIBitmap::ConvertFormat(FXDIB_Format dest_format, void* pIccTransfor
     }
     CFX_DIBitmap* pAlphaMask = NULL;
     if (dest_format == FXDIB_Argb) {
-        FXSYS_memset8(dest_buf, 0xff, dest_pitch * m_Height + 4);
+        FXSYS_memset(dest_buf, 0xff, dest_pitch * m_Height + 4);
         if (m_pAlphaMask) {
             for (int row = 0; row < m_Height; row ++) {
                 uint8_t* pDstScanline = dest_buf + row * dest_pitch + 3;
diff --git a/core/src/fxge/dib/fx_dib_engine.cpp b/core/src/fxge/dib/fx_dib_engine.cpp
index be39e35ce0..7f6dc4e788 100644
--- a/core/src/fxge/dib/fx_dib_engine.cpp
+++ b/core/src/fxge/dib/fx_dib_engine.cpp
@@ -207,7 +207,7 @@ CStretchEngine::CStretchEngine(IFX_ScanlineComposer* pDestBitmap, FXDIB_Format d
         return;
     }
     if (dest_format == FXDIB_Rgb32) {
-        FXSYS_memset8(m_pDestScanline, 255, size);
+        FXSYS_memset(m_pDestScanline, 255, size);
     }
     m_InterPitch = (m_DestClip.Width() * m_DestBpp + 31) / 32 * 4;
     m_ExtraMaskPitch = (m_DestClip.Width() * 8 + 31) / 32 * 4;
diff --git a/core/src/fxge/dib/fx_dib_main.cpp b/core/src/fxge/dib/fx_dib_main.cpp
index ddbe554a04..aa7fe6c608 100644
--- a/core/src/fxge/dib/fx_dib_main.cpp
+++ b/core/src/fxge/dib/fx_dib_main.cpp
@@ -120,7 +120,7 @@ FX_BOOL CFX_DIBitmap::Copy(const CFX_DIBSource* pSrc)
     CopyPalette(pSrc->GetPalette());
     CopyAlphaMask(pSrc->m_pAlphaMask);
     for (int row = 0; row < pSrc->GetHeight(); row ++) {
-        FXSYS_memcpy32(m_pBuffer + row * m_Pitch, pSrc->GetScanline(row), m_Pitch);
+        FXSYS_memcpy(m_pBuffer + row * m_Pitch, pSrc->GetScanline(row), m_Pitch);
     }
     return TRUE;
 }
@@ -190,7 +190,7 @@ CFX_DIBitmap* CFX_DIBSource::Clone(const FX_RECT* pClip) const
         for (int row = rect.top; row < rect.bottom; row ++) {
             const uint8_t* src_scan = GetScanline(row) + rect.left * m_bpp / 8;
             uint8_t* dest_scan = (uint8_t*)pNewBitmap->GetScanline(row - rect.top);
-            FXSYS_memcpy32(dest_scan, src_scan, copy_len);
+            FXSYS_memcpy(dest_scan, src_scan, copy_len);
         }
     }
     return pNewBitmap;
@@ -233,7 +233,7 @@ FX_BOOL CFX_DIBSource::BuildAlphaMask()
         m_pAlphaMask = NULL;
         return FALSE;
     }
-    FXSYS_memset8(m_pAlphaMask->GetBuffer(), 0xff, m_pAlphaMask->GetHeight()*m_pAlphaMask->GetPitch());
+    FXSYS_memset(m_pAlphaMask->GetBuffer(), 0xff, m_pAlphaMask->GetHeight()*m_pAlphaMask->GetPitch());
     return TRUE;
 }
 FX_DWORD CFX_DIBSource::GetPaletteEntry(int index) const
@@ -290,19 +290,19 @@ void CFX_DIBitmap::Clear(FX_DWORD color)
     }
     switch (GetFormat()) {
         case FXDIB_1bppMask:
-            FXSYS_memset8(m_pBuffer, (color & 0xff000000) ? 0xff : 0, m_Pitch * m_Height);
+            FXSYS_memset(m_pBuffer, (color & 0xff000000) ? 0xff : 0, m_Pitch * m_Height);
             break;
         case FXDIB_1bppRgb: {
                 int index = FindPalette(color);
-                FXSYS_memset8(m_pBuffer, index ? 0xff : 0, m_Pitch * m_Height);
+                FXSYS_memset(m_pBuffer, index ? 0xff : 0, m_Pitch * m_Height);
                 break;
             }
         case FXDIB_8bppMask:
-            FXSYS_memset8(m_pBuffer, color >> 24, m_Pitch * m_Height);
+            FXSYS_memset(m_pBuffer, color >> 24, m_Pitch * m_Height);
             break;
         case FXDIB_8bppRgb: {
                 int index = FindPalette(color);
-                FXSYS_memset8(m_pBuffer, index, m_Pitch * m_Height);
+                FXSYS_memset(m_pBuffer, index, m_Pitch * m_Height);
                 break;
             }
         case FXDIB_Rgb:
@@ -310,7 +310,7 @@ void CFX_DIBitmap::Clear(FX_DWORD color)
                 int a, r, g, b;
                 ArgbDecode(color, a, r, g, b);
                 if (r == g && g == b) {
-                    FXSYS_memset8(m_pBuffer, r, m_Pitch * m_Height);
+                    FXSYS_memset(m_pBuffer, r, m_Pitch * m_Height);
                 } else {
                     int byte_pos = 0;
                     for (int col = 0; col < m_Width; col ++) {
@@ -319,7 +319,7 @@ void CFX_DIBitmap::Clear(FX_DWORD color)
                         m_pBuffer[byte_pos++] = r;
                     }
                     for (int row = 1; row < m_Height; row ++) {
-                        FXSYS_memcpy32(m_pBuffer + row * m_Pitch, m_pBuffer, m_Pitch);
+                        FXSYS_memcpy(m_pBuffer + row * m_Pitch, m_pBuffer, m_Pitch);
                     }
                 }
                 break;
@@ -331,7 +331,7 @@ void CFX_DIBitmap::Clear(FX_DWORD color)
                     ((FX_DWORD*)m_pBuffer)[i] = color;
                 }
                 for (int row = 1; row < m_Height; row ++) {
-                    FXSYS_memcpy32(m_pBuffer + row * m_Pitch, m_pBuffer, m_Pitch);
+                    FXSYS_memcpy(m_pBuffer + row * m_Pitch, m_pBuffer, m_Pitch);
                 }
                 break;
             }
@@ -401,7 +401,7 @@ FX_BOOL CFX_DIBitmap::TransferBitmap(int dest_left, int dest_top, int width, int
             for (int row = 0; row < height; row ++) {
                 uint8_t* dest_scan = m_pBuffer + (dest_top + row) * m_Pitch + dest_left * Bpp;
                 const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row) + src_left * Bpp;
-                FXSYS_memcpy32(dest_scan, src_scan, width * Bpp);
+                FXSYS_memcpy(dest_scan, src_scan, width * Bpp);
             }
         }
     } else {
@@ -492,10 +492,10 @@ FX_BOOL CFX_DIBitmap::TransferMask(int dest_left, int dest_top, int width, int h
                 for (int col = 0; col < width; col ++) {
                     int src_bitpos = src_left + col;
                     if (src_scan[src_bitpos / 8] & (1 << (7 - src_bitpos % 8))) {
-                        FXSYS_memcpy32(dest_color_pos, color_p, comps);
+                        FXSYS_memcpy(dest_color_pos, color_p, comps);
                         *dest_alpha_pos = 0xff;
                     } else {
-                        FXSYS_memset32(dest_color_pos, 0, comps);
+                        FXSYS_memset(dest_color_pos, 0, comps);
                         *dest_alpha_pos = 0;
                     }
                     dest_color_pos += comps;
@@ -504,7 +504,7 @@ FX_BOOL CFX_DIBitmap::TransferMask(int dest_left, int dest_top, int width, int h
             } else {
                 src_scan += src_left;
                 for (int col = 0; col < width; col ++) {
-                    FXSYS_memcpy32(dest_color_pos, color_p, comps);
+                    FXSYS_memcpy(dest_color_pos, color_p, comps);
                     dest_color_pos += comps;
                     *dest_alpha_pos++ = (alpha * (*src_scan++) / 255);
                 }
@@ -528,7 +528,7 @@ void CFX_DIBSource::CopyPalette(const FX_DWORD* pSrc, FX_DWORD size)
         if (pal_size > size) {
             pal_size = size;
         }
-        FXSYS_memcpy32(m_pPalette, pSrc, pal_size * sizeof(FX_DWORD));
+        FXSYS_memcpy(m_pPalette, pSrc, pal_size * sizeof(FX_DWORD));
     }
 }
 void CFX_DIBSource::GetPalette(FX_DWORD* pal, int alpha) const
@@ -592,7 +592,7 @@ FX_BOOL CFX_DIBSource::CopyAlphaMask(const CFX_DIBSource* pAlphaMask, const FX_R
             }
         }
         for (int row = 0; row < m_Height; row ++)
-            FXSYS_memcpy32((void*)m_pAlphaMask->GetScanline(row),
+            FXSYS_memcpy((void*)m_pAlphaMask->GetScanline(row),
                            pAlphaMask->GetScanline(row + rect.top) + rect.left, m_pAlphaMask->m_Pitch);
     } else {
         m_pAlphaMask->Clear(0xff000000);
@@ -783,11 +783,11 @@ FX_BOOL CFX_DIBitmap::LoadChannel(FXDIB_Channel destChannel, int value)
     }
     int Bpp = GetBPP() / 8;
     if (Bpp == 1) {
-        FXSYS_memset8(m_pBuffer, value, m_Height * m_Pitch);
+        FXSYS_memset(m_pBuffer, value, m_Height * m_Pitch);
         return TRUE;
     }
     if (destChannel == FXDIB_Alpha && m_pAlphaMask) {
-        FXSYS_memset8(m_pAlphaMask->GetBuffer(), value, m_pAlphaMask->GetHeight()*m_pAlphaMask->GetPitch());
+        FXSYS_memset(m_pAlphaMask->GetBuffer(), value, m_pAlphaMask->GetHeight()*m_pAlphaMask->GetPitch());
         return TRUE;
     }
     for (int row = 0; row < m_Height; row ++) {
@@ -889,7 +889,7 @@ FX_BOOL CFX_DIBitmap::GetGrayData(void* pIccTransform)
                     delete pMask;
                     return FALSE;
                 }
-                FXSYS_memset8(pMask->GetBuffer(), gray[0], pMask->GetPitch() * m_Height);
+                FXSYS_memset(pMask->GetBuffer(), gray[0], pMask->GetPitch() * m_Height);
                 for (int row = 0; row < m_Height; row ++) {
                     uint8_t* src_pos = m_pBuffer + row * m_Pitch;
                     uint8_t* dest_pos = (uint8_t*)pMask->GetScanline(row);
@@ -1396,11 +1396,11 @@ CFX_DIBitmap* CFX_DIBSource::FlipImage(FX_BOOL bXFlip, FX_BOOL bYFlip) const
         const uint8_t* src_scan = GetScanline(row);
         uint8_t* dest_scan = pDestBuffer + m_Pitch * (bYFlip ? (m_Height - row - 1) : row);
         if (!bXFlip) {
-            FXSYS_memcpy32(dest_scan, src_scan, m_Pitch);
+            FXSYS_memcpy(dest_scan, src_scan, m_Pitch);
             continue;
         }
         if (m_bpp == 1) {
-            FXSYS_memset32(dest_scan, 0, m_Pitch);
+            FXSYS_memset(dest_scan, 0, m_Pitch);
             for (int col = 0; col < m_Width; col ++)
                 if (src_scan[col / 8] & (1 << (7 - col % 8))) {
                     int dest_col = m_Width - col - 1;
@@ -1439,7 +1439,7 @@ CFX_DIBitmap* CFX_DIBSource::FlipImage(FX_BOOL bXFlip, FX_BOOL bYFlip) const
             const uint8_t* src_scan = m_pAlphaMask->GetScanline(row);
             uint8_t* dest_scan = pDestBuffer + dest_pitch * (bYFlip ? (m_Height - row - 1) : row);
             if (!bXFlip) {
-                FXSYS_memcpy32(dest_scan, src_scan, dest_pitch);
+                FXSYS_memcpy(dest_scan, src_scan, dest_pitch);
                 continue;
             }
             dest_scan += (m_Width - 1);
@@ -1660,10 +1660,10 @@ void CFX_BitmapStorer::ComposeScanline(int line, const uint8_t* scanline, const
     uint8_t* dest_alpha_buf = m_pBitmap->m_pAlphaMask ?
                                (uint8_t*)m_pBitmap->m_pAlphaMask->GetScanline(line) : NULL;
     if (dest_buf) {
-        FXSYS_memcpy32(dest_buf, scanline, m_pBitmap->GetPitch());
+        FXSYS_memcpy(dest_buf, scanline, m_pBitmap->GetPitch());
     }
     if (dest_alpha_buf) {
-        FXSYS_memcpy32(dest_alpha_buf, scan_extra_alpha, m_pBitmap->m_pAlphaMask->GetPitch());
+        FXSYS_memcpy(dest_alpha_buf, scan_extra_alpha, m_pBitmap->m_pAlphaMask->GetPitch());
     }
 }
 FX_BOOL CFX_BitmapStorer::SetInfo(int width, int height, FXDIB_Format src_format, FX_DWORD* pSrcPalette)
diff --git a/core/src/fxge/dib/fx_dib_transform.cpp b/core/src/fxge/dib/fx_dib_transform.cpp
index 5a104c702d..9c9c9ed582 100644
--- a/core/src/fxge/dib/fx_dib_transform.cpp
+++ b/core/src/fxge/dib/fx_dib_transform.cpp
@@ -77,7 +77,7 @@ CFX_DIBitmap* CFX_DIBSource::SwapXY(FX_BOOL bXFlip, FX_BOOL bYFlip, const FX_REC
     int col_start = bYFlip ? m_Width - dest_clip.bottom : dest_clip.top;
     int col_end = bYFlip ? m_Width - dest_clip.top : dest_clip.bottom;
     if (GetBPP() == 1) {
-        FXSYS_memset8(dest_buf, 0xff, dest_pitch * result_height);
+        FXSYS_memset(dest_buf, 0xff, dest_pitch * result_height);
         for (int row = row_start; row < row_end; row ++) {
             const uint8_t* src_scan = GetScanline(row);
             int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - dest_clip.left;