[tkreuzer] 58051: [DIBLIB] - Use memmove explicitly in Dib_BitBlt_SRCCOPY_EqSurf and use it for right-to-left copy as well.

Author: tkreuzer
Date: Sun Dec 30 12:32:00 2012
New Revision: 58051

URL: http://svn.reactos.org/svn/reactos?rev=58051&view=rev
Log:
[DIBLIB]
- Use memmove explicitly in Dib_BitBlt_SRCCOPY_EqSurf and use it for right-to-left copy as well.

Modified:
    branches/dib_rewrite/win32ss/gdi/diblib/BitBlt_SRCCOPY.c
    branches/dib_rewrite/win32ss/gdi/diblib/DibLib.h

Modified: branches/dib_rewrite/win32ss/gdi/diblib/BitBlt_SRCCOPY.c
URL: http://svn.reactos.org/svn/reactos/branches/dib_rewrite/win32ss/gdi/diblib/B...
==============================================================================
--- branches/dib_rewrite/win32ss/gdi/diblib/BitBlt_SRCCOPY.c [iso-8859-1] (original)
+++ branches/dib_rewrite/win32ss/gdi/diblib/BitBlt_SRCCOPY.c [iso-8859-1] Sun Dec 30 12:32:00 2012
@@ -1,6 +1,7 @@

#include "DibLib.h"

+/* This is a fast xlateless memmove version that can be used for R2L as well */
 VOID
 FASTCALL
 Dib_BitBlt_SRCCOPY_EqSurf(PBLTDATA pBltData)
@@ -16,7 +17,8 @@
     cLines = pBltData->ulHeight;
     while (cLines--)
     {
-        memcpy(pjDestBase, pjSrcBase, cjWidth);
+        /* Use memmove to handle copying right-to-left with overlap */
+        memmove(pjDestBase, pjSrcBase, cjWidth);
         pjDestBase += pBltData->siDst.cjAdvanceY;
         pjSrcBase += pBltData->siSrc.cjAdvanceY;
     }
@@ -25,18 +27,23 @@
 #define Dib_BitBlt_SRCCOPY_S8_D8_EqSurf Dib_BitBlt_SRCCOPY_EqSurf
 #define Dib_BitBlt_SRCCOPY_S16_D16_EqSurf Dib_BitBlt_SRCCOPY_EqSurf
 #define Dib_BitBlt_SRCCOPY_S24_D24_EqSurf Dib_BitBlt_SRCCOPY_EqSurf
+#define Dib_BitBlt_SRCCOPY_S8_D8_EqSurfR2L Dib_BitBlt_SRCCOPY_EqSurf
+#define Dib_BitBlt_SRCCOPY_S16_D16_EqSurfR2L Dib_BitBlt_SRCCOPY_EqSurf
+#define Dib_BitBlt_SRCCOPY_S24_D24_EqSurfR2L Dib_BitBlt_SRCCOPY_EqSurf
+#define Dib_BitBlt_SRCCOPY_S32_D32_EqSurfR2L Dib_BitBlt_SRCCOPY_EqSurf

-/* special movsd optimization on x86 */
+/* special movsd optimization on x86, only for left-to-right */
 #if defined(_M_IX86) || defined(_M_AMD64)
 VOID
 FASTCALL
 Dib_BitBlt_SRCCOPY_S32_D32_EqSurf(PBLTDATA pBltData)
 {
-    ULONG cLines, cRows = pBltData->ulWidth;
+    ULONG cLines, cRows;
     PBYTE pjDestBase = pBltData->siDst.pjBase;
     PBYTE pjSrcBase = pBltData->siSrc.pjBase;

/* Loop all lines */
+    cRows = pBltData->ulWidth;
     cLines = pBltData->ulHeight;
     while (cLines--)
     {

Modified: branches/dib_rewrite/win32ss/gdi/diblib/DibLib.h
URL: http://svn.reactos.org/svn/reactos/branches/dib_rewrite/win32ss/gdi/diblib/D...
==============================================================================
--- branches/dib_rewrite/win32ss/gdi/diblib/DibLib.h [iso-8859-1] (original)
+++ branches/dib_rewrite/win32ss/gdi/diblib/DibLib.h [iso-8859-1] Sun Dec 30 12:32:00 2012
@@ -37,7 +37,6 @@
 #define __DIB_FUNCTION_NAME_DST2(name, dst_bpp) Dib_ ## name ## _D ## dst_bpp
 #define __DIB_FUNCTION_NAME_DST(name, src_bpp, dst_bpp) __DIB_FUNCTION_NAME_DST2(name, dst_bpp)
 #define __DIB_FUNCTION_NAME_SRCDSTEQ(name, src_bpp, dst_bpp) __PASTE(__DIB_FUNCTION_NAME_SRCDST2(name, src_bpp, dst_bpp), _EqSurf)
-#define __DIB_FUNCTION_NAME_SRCDSTEQL2R(name, src_bpp, dst_bpp) __PASTE(__DIB_FUNCTION_NAME_SRCDST2(name, src_bpp, dst_bpp), _EqSurfL2R)
 #define __DIB_FUNCTION_NAME_SRCDSTEQR2L(name, src_bpp, dst_bpp) __PASTE(__DIB_FUNCTION_NAME_SRCDST2(name, src_bpp, dst_bpp), _EqSurfR2L)

#define _ReadPixel_1(pjSource, jShift) (((*(pjSource)) >> (jShift)) & 1)