R6.6 is the Xorg base-lineXORG-MAIN

1 files changed, 587 insertions, 0 deletions

diff --git a/mfb/mfbblt.c b/mfb/mfbblt.c
new file mode 100644
index 000000000..28f16febc
--- /dev/null
+++ b/mfb/mfbblt.c
@@ -0,0 +1,587 @@
+/*
+ * mfb copy area
+ */
+
+/*
+
+Copyright 1989, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+Author: Keith Packard
+
+*/
+/* $Xorg: mfbblt.c,v 1.4 2001/02/09 02:05:18 xorgcvs Exp $ */
+
+#include	"X.h"
+#include	"Xmd.h"
+#include	"Xproto.h"
+#include	"mfb.h"
+#include	"gcstruct.h"
+#include	"windowstr.h"
+#include	"scrnintstr.h"
+#include	"pixmapstr.h"
+#include	"regionstr.h"
+#include	"maskbits.h"
+#include	"fastblt.h"
+#include	"mergerop.h"
+
+void
+MROP_NAME(mfbDoBitblt)(pSrc, pDst, alu, prgnDst, pptSrc)
+    DrawablePtr	    pSrc, pDst;
+    int		    alu;
+    RegionPtr	    prgnDst;
+    DDXPointPtr	    pptSrc;
+{
+    PixelType *psrcBase, *pdstBase;	
+				/* start of src and dst bitmaps */
+    int widthSrc, widthDst;	/* add to get to same position in next line */
+
+    BoxPtr pbox;
+    int nbox;
+
+    BoxPtr pboxTmp, pboxNext, pboxBase, pboxNew1, pboxNew2;
+				/* temporaries for shuffling rectangles */
+    DDXPointPtr pptTmp, pptNew1, pptNew2;
+				/* shuffling boxes entails shuffling the
+				   source points too */
+    int w, h;
+    int xdir;			/* 1 = left right, -1 = right left/ */
+    int ydir;			/* 1 = top down, -1 = bottom up */
+
+    PixelType *psrcLine, *pdstLine;	
+				/* pointers to line with current src and dst */
+    register PixelType *psrc;/* pointer to current src longword */
+    register PixelType *pdst;/* pointer to current dst longword */
+
+    MROP_DECLARE_REG()
+
+				/* following used for looping through a line */
+    PixelType startmask, endmask;	/* masks for writing ends of dst */
+    int nlMiddle;		/* whole longwords in dst */
+    int xoffSrc, xoffDst;
+    register int leftShift, rightShift;
+    register PixelType bits;
+    register PixelType bits1;
+    register int nl;		/* temp copy of nlMiddle */
+
+				/* place to store full source word */
+    int nstart;			/* number of ragged bits at start of dst */
+    int nend;			/* number of ragged bits at end of dst */
+    int srcStartOver;		/* pulling nstart bits from src
+				   overflows into the next word? */
+    int careful;
+    int tmpSrc;
+
+    MROP_INITIALIZE(alu,0);
+
+    mfbGetPixelWidthAndPointer(pSrc, widthSrc, psrcBase);
+
+    mfbGetPixelWidthAndPointer(pDst, widthDst, pdstBase);
+
+    /* XXX we have to err on the side of safety when both are windows,
+     * because we don't know if IncludeInferiors is being used.
+     */
+    careful = ((pSrc == pDst) ||
+	       ((pSrc->type == DRAWABLE_WINDOW) &&
+		(pDst->type == DRAWABLE_WINDOW)));
+
+    pbox = REGION_RECTS(prgnDst);
+    nbox = REGION_NUM_RECTS(prgnDst);
+
+    pboxNew1 = NULL;
+    pptNew1 = NULL;
+    pboxNew2 = NULL;
+    pptNew2 = NULL;
+    if (careful && (pptSrc->y < pbox->y1))
+    {
+        /* walk source botttom to top */
+	ydir = -1;
+	widthSrc = -widthSrc;
+	widthDst = -widthDst;
+
+	if (nbox > 1)
+	{
+	    /* keep ordering in each band, reverse order of bands */
+	    pboxNew1 = (BoxPtr)ALLOCATE_LOCAL(sizeof(BoxRec) * nbox);
+	    if(!pboxNew1)
+		return;
+	    pptNew1 = (DDXPointPtr)ALLOCATE_LOCAL(sizeof(DDXPointRec) * nbox);
+	    if(!pptNew1)
+	    {
+	        DEALLOCATE_LOCAL(pboxNew1);
+	        return;
+	    }
+	    pboxBase = pboxNext = pbox+nbox-1;
+	    while (pboxBase >= pbox)
+	    {
+	        while ((pboxNext >= pbox) &&
+		       (pboxBase->y1 == pboxNext->y1))
+		    pboxNext--;
+	        pboxTmp = pboxNext+1;
+	        pptTmp = pptSrc + (pboxTmp - pbox);
+	        while (pboxTmp <= pboxBase)
+	        {
+		    *pboxNew1++ = *pboxTmp++;
+		    *pptNew1++ = *pptTmp++;
+	        }
+	        pboxBase = pboxNext;
+	    }
+	    pboxNew1 -= nbox;
+	    pbox = pboxNew1;
+	    pptNew1 -= nbox;
+	    pptSrc = pptNew1;
+        }
+    }
+    else
+    {
+	/* walk source top to bottom */
+	ydir = 1;
+    }
+
+    if (careful && (pptSrc->x < pbox->x1))
+    {
+	/* walk source right to left */
+        xdir = -1;
+
+	if (nbox > 1)
+	{
+	    /* reverse order of rects in each band */
+	    pboxNew2 = (BoxPtr)ALLOCATE_LOCAL(sizeof(BoxRec) * nbox);
+	    pptNew2 = (DDXPointPtr)ALLOCATE_LOCAL(sizeof(DDXPointRec) * nbox);
+	    if(!pboxNew2 || !pptNew2)
+	    {
+		if (pptNew2) DEALLOCATE_LOCAL(pptNew2);
+		if (pboxNew2) DEALLOCATE_LOCAL(pboxNew2);
+		if (pboxNew1)
+		{
+		    DEALLOCATE_LOCAL(pptNew1);
+		    DEALLOCATE_LOCAL(pboxNew1);
+		}
+	        return;
+	    }
+	    pboxBase = pboxNext = pbox;
+	    while (pboxBase < pbox+nbox)
+	    {
+	        while ((pboxNext < pbox+nbox) &&
+		       (pboxNext->y1 == pboxBase->y1))
+		    pboxNext++;
+	        pboxTmp = pboxNext;
+	        pptTmp = pptSrc + (pboxTmp - pbox);
+	        while (pboxTmp != pboxBase)
+	        {
+		    *pboxNew2++ = *--pboxTmp;
+		    *pptNew2++ = *--pptTmp;
+	        }
+	        pboxBase = pboxNext;
+	    }
+	    pboxNew2 -= nbox;
+	    pbox = pboxNew2;
+	    pptNew2 -= nbox;
+	    pptSrc = pptNew2;
+	}
+    }
+    else
+    {
+	/* walk source left to right */
+        xdir = 1;
+    }
+
+    while(nbox--)
+    {
+	w = pbox->x2 - pbox->x1;
+	h = pbox->y2 - pbox->y1;
+
+	if (ydir == -1) /* start at last scanline of rectangle */
+	{
+	    psrcLine = mfbScanlineDeltaSrc(psrcBase, -(pptSrc->y+h-1), widthSrc);
+	    pdstLine = mfbScanlineDeltaDst(pdstBase, -(pbox->y2-1), widthDst);
+	}
+	else /* start at first scanline */
+	{
+	    psrcLine = mfbScanlineDeltaSrc(psrcBase, pptSrc->y, widthSrc);
+	    pdstLine = mfbScanlineDeltaDst(pdstBase, pbox->y1, widthDst);
+	}
+	if ((pbox->x1 & PIM) + w <= PPW)
+	{
+	    maskpartialbits (pbox->x1, w, startmask);
+	    endmask = 0;
+	    nlMiddle = 0;
+	}
+	else
+	{
+	    maskbits(pbox->x1, w, startmask, endmask, nlMiddle);
+	}
+	if (xdir == 1)
+	{
+	    xoffSrc = pptSrc->x & PIM;
+	    xoffDst = pbox->x1 & PIM;
+	    pdstLine += (pbox->x1 >> PWSH);
+	    psrcLine += (pptSrc->x >> PWSH);
+#ifdef DO_UNALIGNED_BITBLT
+	    nl = xoffSrc - xoffDst;
+	    psrcLine = (PixelType *)
+			(((unsigned char *) psrcLine) + nl);
+#else
+	    if (xoffSrc == xoffDst)
+#endif
+	    {
+		while (h--)
+		{
+		    psrc = psrcLine;
+		    pdst = pdstLine;
+		    if (startmask)
+		    {
+			*pdst = MROP_MASK(*psrc, *pdst, startmask);
+			psrc++;
+			pdst++;
+		    }
+		    nl = nlMiddle;
+
+#ifdef LARGE_INSTRUCTION_CACHE
+#ifdef FAST_CONSTANT_OFFSET_MODE
+
+		    psrc += nl & (UNROLL-1);
+		    pdst += nl & (UNROLL-1);
+
+#define BodyOdd(n) pdst[-n] = MROP_SOLID (psrc[-n], pdst[-n]);
+#define BodyEven(n) pdst[-n] = MROP_SOLID (psrc[-n], pdst[-n]);
+
+#define LoopReset \
+pdst += UNROLL; \
+psrc += UNROLL;
+
+#else
+
+#define BodyOdd(n)  *pdst = MROP_SOLID (*psrc, *pdst); pdst++; psrc++;
+#define BodyEven(n) BodyOdd(n)
+
+#define LoopReset   ;
+
+#endif
+		    PackedLoop
+
+#undef BodyOdd
+#undef BodyEven
+#undef LoopReset
+
+#else
+#ifdef NOTDEF
+		    /* you'd think this would be faster --
+		     * a single instruction instead of 6
+		     * but measurements show it to be ~15% slower
+		     */
+		    while ((nl -= 6) >= 0)
+		    {
+			asm ("moveml %1+,#0x0c0f;moveml#0x0c0f,%0"
+			     : "=m" (*(char *)pdst)
+			     : "m" (*(char *)psrc)
+			     : "d0", "d1", "d2", "d3",
+			       "a2", "a3");
+			pdst += 6;
+		    }
+		    nl += 6;
+		    while (nl--)
+			*pdst++ = *psrc++;
+#endif
+		    DuffL(nl, label1,
+			    *pdst = MROP_SOLID (*psrc, *pdst);
+			    pdst++; psrc++;)
+#endif
+
+		    if (endmask)
+			*pdst = MROP_MASK(*psrc, *pdst, endmask);
+		    mfbScanlineIncDst(pdstLine, widthDst);
+		    mfbScanlineIncSrc(psrcLine, widthSrc);
+		}
+	    }
+#ifndef DO_UNALIGNED_BITBLT
+	    else
+	    {
+		if (xoffSrc > xoffDst)
+		{
+		    leftShift = (xoffSrc - xoffDst);
+		    rightShift = PPW - leftShift;
+		}
+		else
+		{
+		    rightShift = (xoffDst - xoffSrc);
+		    leftShift = PPW - rightShift;
+		}
+		while (h--)
+		{
+		    psrc = psrcLine;
+		    pdst = pdstLine;
+		    bits = 0;
+		    if (xoffSrc > xoffDst)
+			bits = *psrc++;
+		    if (startmask)
+		    {
+			bits1 = BitLeft(bits,leftShift);
+			bits = *psrc++;
+			bits1 |= BitRight(bits,rightShift);
+			*pdst = MROP_MASK(bits1, *pdst, startmask);
+			pdst++;
+		    }
+		    nl = nlMiddle;
+
+#ifdef LARGE_INSTRUCTION_CACHE
+		    bits1 = bits;
+
+#ifdef FAST_CONSTANT_OFFSET_MODE
+
+		    psrc += nl & (UNROLL-1);
+		    pdst += nl & (UNROLL-1);
+
+#define BodyOdd(n) \
+bits = psrc[-n]; \
+pdst[-n] = MROP_SOLID(BitLeft(bits1, leftShift) | BitRight(bits, rightShift), pdst[-n]);
+
+#define BodyEven(n) \
+bits1 = psrc[-n]; \
+pdst[-n] = MROP_SOLID(BitLeft(bits, leftShift) | BitRight(bits1, rightShift), pdst[-n]);
+
+#define LoopReset \
+pdst += UNROLL; \
+psrc += UNROLL;
+
+#else
+
+#define BodyOdd(n) \
+bits = *psrc++; \
+*pdst = MROP_SOLID(BitLeft(bits1, leftShift) | BitRight(bits, rightShift), *pdst); \
+pdst++;
+		   
+#define BodyEven(n) \
+bits1 = *psrc++; \
+*pdst = MROP_SOLID(BitLeft(bits, leftShift) | BitRight(bits1, rightShift), *pdst); \
+pdst++;
+
+#define LoopReset   ;
+
+#endif	/* !FAST_CONSTANT_OFFSET_MODE */
+
+		    PackedLoop
+
+#undef BodyOdd
+#undef BodyEven
+#undef LoopReset
+
+#else
+		    DuffL (nl,label2,
+			bits1 = BitLeft(bits, leftShift);
+			bits = *psrc++;
+			*pdst = MROP_SOLID (bits1 | BitRight(bits, rightShift), *pdst);
+			pdst++;
+		    )
+#endif
+
+		    if (endmask)
+		    {
+			bits1 = BitLeft(bits, leftShift);
+			if (BitLeft(endmask, rightShift))
+			{
+			    bits = *psrc;
+			    bits1 |= BitRight(bits, rightShift);
+			}
+			*pdst = MROP_MASK (bits1, *pdst, endmask);
+		    }
+		    mfbScanlineIncDst(pdstLine, widthDst);
+		    mfbScanlineIncSrc(psrcLine, widthSrc);
+		}
+	    }
+#endif /* DO_UNALIGNED_BITBLT */
+	}
+	else	/* xdir == -1 */
+	{
+	    xoffSrc = (pptSrc->x + w - 1) & PIM;
+	    xoffDst = (pbox->x2 - 1) & PIM;
+	    pdstLine += ((pbox->x2-1) >> PWSH) + 1;
+	    psrcLine += ((pptSrc->x+w - 1) >> PWSH) + 1;
+#ifdef DO_UNALIGNED_BITBLT
+	    nl = xoffSrc - xoffDst;
+	    psrcLine = (PixelType *)
+			(((unsigned char *) psrcLine) + nl);
+#else
+	    if (xoffSrc == xoffDst)
+#endif
+	    {
+		while (h--)
+		{
+		    psrc = psrcLine;
+		    pdst = pdstLine;
+		    if (endmask)
+		    {
+			pdst--;
+			psrc--;
+			*pdst = MROP_MASK (*psrc, *pdst, endmask);
+		    }
+		    nl = nlMiddle;
+
+#ifdef LARGE_INSTRUCTION_CACHE
+#ifdef FAST_CONSTANT_OFFSET_MODE
+		    psrc -= nl & (UNROLL - 1);
+		    pdst -= nl & (UNROLL - 1);
+
+#define BodyOdd(n) pdst[n-1] = MROP_SOLID (psrc[n-1], pdst[n-1]);
+
+#define BodyEven(n) BodyOdd(n)
+
+#define LoopReset \
+pdst -= UNROLL;\
+psrc -= UNROLL;
+
+#else
+
+#define BodyOdd(n)  --pdst; --psrc; *pdst = MROP_SOLID(*psrc, *pdst);
+#define BodyEven(n) BodyOdd(n)
+#define LoopReset   ;
+
+#endif
+		    PackedLoop
+
+#undef BodyOdd
+#undef BodyEven
+#undef LoopReset
+
+#else
+		    DuffL(nl,label3,
+			 --pdst; --psrc; *pdst = MROP_SOLID (*psrc, *pdst);)
+#endif
+
+		    if (startmask)
+		    {
+			--pdst;
+			--psrc;
+			*pdst = MROP_MASK(*psrc, *pdst, startmask);
+		    }
+		    mfbScanlineIncDst(pdstLine, widthDst);
+		    mfbScanlineIncSrc(psrcLine, widthSrc);
+		}
+	    }
+#ifndef DO_UNALIGNED_BITBLT
+	    else
+	    {
+		if (xoffDst > xoffSrc)
+		{
+		    rightShift = (xoffDst - xoffSrc);
+		    leftShift = PPW - rightShift;
+		}
+		else
+		{
+		    leftShift = (xoffSrc - xoffDst);
+		    rightShift = PPW - leftShift;
+		}
+		while (h--)
+		{
+		    psrc = psrcLine;
+		    pdst = pdstLine;
+		    bits = 0;
+		    if (xoffDst > xoffSrc)
+			bits = *--psrc;
+		    if (endmask)
+		    {
+			bits1 = BitRight(bits, rightShift);
+			bits = *--psrc;
+			bits1 |= BitLeft(bits, leftShift);
+			pdst--;
+			*pdst = MROP_MASK(bits1, *pdst, endmask);
+		    }
+		    nl = nlMiddle;
+
+#ifdef LARGE_INSTRUCTION_CACHE
+		    bits1 = bits;
+#ifdef FAST_CONSTANT_OFFSET_MODE
+		    psrc -= nl & (UNROLL - 1);
+		    pdst -= nl & (UNROLL - 1);
+
+#define BodyOdd(n) \
+bits = psrc[n-1]; \
+pdst[n-1] = MROP_SOLID(BitRight(bits1, rightShift) | BitLeft(bits, leftShift),pdst[n-1]);
+
+#define BodyEven(n) \
+bits1 = psrc[n-1]; \
+pdst[n-1] = MROP_SOLID(BitRight(bits, rightShift) | BitLeft(bits1, leftShift),pdst[n-1]);
+
+#define LoopReset \
+pdst -= UNROLL; \
+psrc -= UNROLL;
+
+#else
+
+#define BodyOdd(n) \
+bits = *--psrc; --pdst; \
+*pdst = MROP_SOLID(BitRight(bits1, rightShift) | BitLeft(bits, leftShift),*pdst);
+
+#define BodyEven(n) \
+bits1 = *--psrc; --pdst; \
+*pdst = MROP_SOLID(BitRight(bits, rightShift) | BitLeft(bits1, leftShift),*pdst);
+
+#define LoopReset   ;
+
+#endif
+
+		    PackedLoop
+
+#undef BodyOdd
+#undef BodyEven
+#undef LoopReset
+
+#else
+		    DuffL (nl, label4,
+			bits1 = BitRight(bits, rightShift);
+			bits = *--psrc;
+			--pdst;
+			*pdst = MROP_SOLID(bits1 | BitLeft(bits, leftShift),*pdst);
+		    )
+#endif
+
+		    if (startmask)
+		    {
+			bits1 = BitRight(bits, rightShift);
+			if (BitRight (startmask, leftShift))
+			{
+			    bits = *--psrc;
+			    bits1 |= BitLeft(bits, leftShift);
+			}
+			--pdst;
+			*pdst = MROP_MASK(bits1, *pdst, startmask);
+		    }
+		    mfbScanlineIncDst(pdstLine, widthDst);
+		    mfbScanlineIncSrc(psrcLine, widthSrc);
+		}
+	    }
+#endif
+	}
+	pbox++;
+	pptSrc++;
+    }
+    if (pboxNew2)
+    {
+	DEALLOCATE_LOCAL(pptNew2);
+	DEALLOCATE_LOCAL(pboxNew2);
+    }
+    if (pboxNew1)
+    {
+	DEALLOCATE_LOCAL(pptNew1);
+	DEALLOCATE_LOCAL(pboxNew1);
+    }
+}