--- /dev/null
+/*
+ * cfb copy area
+ */
+
+/*
+
+Copyright (c) 1989 X Consortium
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+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
+X CONSORTIUM 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 X Consortium 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 X Consortium.
+
+Author: Keith Packard
+
+*/
+/* $XConsortium: cfbbitblt.c,v 5.51 94/05/27 11:00:56 dpw Exp $ */
+
+#include "X.h"
+#include "Xmd.h"
+#include "Xproto.h"
+#include "gcstruct.h"
+#include "windowstr.h"
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "regionstr.h"
+#include "cfb.h"
+#include "cfbmskbits.h"
+#include "cfb8bit.h"
+#include "fastblt.h"
+#define MFB_CONSTS_ONLY
+#include "maskbits.h"
+
+RegionPtr
+cfbBitBlt (pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, bitPlane)
+ register DrawablePtr pSrcDrawable;
+ register DrawablePtr pDstDrawable;
+ GC *pGC;
+ int srcx, srcy;
+ int width, height;
+ int dstx, dsty;
+ void (*doBitBlt)();
+ unsigned long bitPlane;
+{
+ RegionPtr prgnSrcClip; /* may be a new region, or just a copy */
+ Bool freeSrcClip = FALSE;
+
+ RegionPtr prgnExposed;
+ RegionRec rgnDst;
+ DDXPointPtr pptSrc;
+ register DDXPointPtr ppt;
+ register BoxPtr pbox;
+ int i;
+ register int dx;
+ register int dy;
+ xRectangle origSource;
+ DDXPointRec origDest;
+ int numRects;
+ BoxRec fastBox;
+ int fastClip = 0; /* for fast clipping with pixmap source */
+ int fastExpose = 0; /* for fast exposures with pixmap source */
+
+ origSource.x = srcx;
+ origSource.y = srcy;
+ origSource.width = width;
+ origSource.height = height;
+ origDest.x = dstx;
+ origDest.y = dsty;
+
+ if ((pSrcDrawable != pDstDrawable) &&
+ pSrcDrawable->pScreen->SourceValidate)
+ {
+ (*pSrcDrawable->pScreen->SourceValidate) (pSrcDrawable, srcx, srcy, width, height);
+ }
+
+ srcx += pSrcDrawable->x;
+ srcy += pSrcDrawable->y;
+
+ /* clip the source */
+
+ if (pSrcDrawable->type == DRAWABLE_PIXMAP)
+ {
+ if ((pSrcDrawable == pDstDrawable) &&
+ (pGC->clientClipType == CT_NONE))
+ {
+ prgnSrcClip = cfbGetCompositeClip(pGC);
+ }
+ else
+ {
+ fastClip = 1;
+ }
+ }
+ else
+ {
+ if (pGC->subWindowMode == IncludeInferiors)
+ {
+ if (!((WindowPtr) pSrcDrawable)->parent)
+ {
+ /*
+ * special case bitblt from root window in
+ * IncludeInferiors mode; just like from a pixmap
+ */
+ fastClip = 1;
+ }
+ else if ((pSrcDrawable == pDstDrawable) &&
+ (pGC->clientClipType == CT_NONE))
+ {
+ prgnSrcClip = cfbGetCompositeClip(pGC);
+ }
+ else
+ {
+ prgnSrcClip = NotClippedByChildren((WindowPtr)pSrcDrawable);
+ freeSrcClip = TRUE;
+ }
+ }
+ else
+ {
+ prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
+ }
+ }
+
+ fastBox.x1 = srcx;
+ fastBox.y1 = srcy;
+ fastBox.x2 = srcx + width;
+ fastBox.y2 = srcy + height;
+
+ /* Don't create a source region if we are doing a fast clip */
+ if (fastClip)
+ {
+ fastExpose = 1;
+ /*
+ * clip the source; if regions extend beyond the source size,
+ * make sure exposure events get sent
+ */
+ if (fastBox.x1 < pSrcDrawable->x)
+ {
+ fastBox.x1 = pSrcDrawable->x;
+ fastExpose = 0;
+ }
+ if (fastBox.y1 < pSrcDrawable->y)
+ {
+ fastBox.y1 = pSrcDrawable->y;
+ fastExpose = 0;
+ }
+ if (fastBox.x2 > pSrcDrawable->x + (int) pSrcDrawable->width)
+ {
+ fastBox.x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
+ fastExpose = 0;
+ }
+ if (fastBox.y2 > pSrcDrawable->y + (int) pSrcDrawable->height)
+ {
+ fastBox.y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
+ fastExpose = 0;
+ }
+ }
+ else
+ {
+ REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
+ REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, prgnSrcClip);
+ }
+
+ dstx += pDstDrawable->x;
+ dsty += pDstDrawable->y;
+
+ if (pDstDrawable->type == DRAWABLE_WINDOW)
+ {
+ if (!((WindowPtr)pDstDrawable)->realized)
+ {
+ if (!fastClip)
+ REGION_UNINIT(pGC->pScreen, &rgnDst);
+ if (freeSrcClip)
+ REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+ return NULL;
+ }
+ }
+
+ dx = srcx - dstx;
+ dy = srcy - dsty;
+
+ /* Translate and clip the dst to the destination composite clip */
+ if (fastClip)
+ {
+ RegionPtr cclip;
+
+ /* Translate the region directly */
+ fastBox.x1 -= dx;
+ fastBox.x2 -= dx;
+ fastBox.y1 -= dy;
+ fastBox.y2 -= dy;
+
+ /* If the destination composite clip is one rectangle we can
+ do the clip directly. Otherwise we have to create a full
+ blown region and call intersect */
+
+ /* XXX because CopyPlane uses this routine for 8-to-1 bit
+ * copies, this next line *must* also correctly fetch the
+ * composite clip from an mfb gc
+ */
+
+ cclip = cfbGetCompositeClip(pGC);
+ if (REGION_NUM_RECTS(cclip) == 1)
+ {
+ BoxPtr pBox = REGION_RECTS(cclip);
+
+ if (fastBox.x1 < pBox->x1) fastBox.x1 = pBox->x1;
+ if (fastBox.x2 > pBox->x2) fastBox.x2 = pBox->x2;
+ if (fastBox.y1 < pBox->y1) fastBox.y1 = pBox->y1;
+ if (fastBox.y2 > pBox->y2) fastBox.y2 = pBox->y2;
+
+ /* Check to see if the region is empty */
+ if (fastBox.x1 >= fastBox.x2 || fastBox.y1 >= fastBox.y2)
+ {
+ REGION_INIT(pGC->pScreen, &rgnDst, NullBox, 0);
+ }
+ else
+ {
+ REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
+ }
+ }
+ else
+ {
+ /* We must turn off fastClip now, since we must create
+ a full blown region. It is intersected with the
+ composite clip below. */
+ fastClip = 0;
+ REGION_INIT(pGC->pScreen, &rgnDst, &fastBox,1);
+ }
+ }
+ else
+ {
+ REGION_TRANSLATE(pGC->pScreen, &rgnDst, -dx, -dy);
+ }
+
+ if (!fastClip)
+ {
+ REGION_INTERSECT(pGC->pScreen, &rgnDst,
+ &rgnDst,
+ cfbGetCompositeClip(pGC));
+ }
+
+ /* Do bit blitting */
+ numRects = REGION_NUM_RECTS(&rgnDst);
+ if (numRects && width && height)
+ {
+ if(!(pptSrc = (DDXPointPtr)ALLOCATE_LOCAL(numRects *
+ sizeof(DDXPointRec))))
+ {
+ REGION_UNINIT(pGC->pScreen, &rgnDst);
+ if (freeSrcClip)
+ REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+ return NULL;
+ }
+ pbox = REGION_RECTS(&rgnDst);
+ ppt = pptSrc;
+ for (i = numRects; --i >= 0; pbox++, ppt++)
+ {
+ ppt->x = pbox->x1 + dx;
+ ppt->y = pbox->y1 + dy;
+ }
+
+ (*doBitBlt) (pSrcDrawable, pDstDrawable, pGC->alu, &rgnDst, pptSrc, pGC->planemask, bitPlane);
+ DEALLOCATE_LOCAL(pptSrc);
+ }
+
+ prgnExposed = NULL;
+ if ( cfbGetGCPrivate(pGC)->fExpose)
+ {
+ extern RegionPtr miHandleExposures();
+
+ /* Pixmap sources generate a NoExposed (we return NULL to do this) */
+ if (!fastExpose)
+ prgnExposed =
+ miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
+ origSource.x, origSource.y,
+ (int)origSource.width,
+ (int)origSource.height,
+ origDest.x, origDest.y, bitPlane);
+ }
+ REGION_UNINIT(pGC->pScreen, &rgnDst);
+ if (freeSrcClip)
+ REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+ return prgnExposed;
+}
+
+
+void
+cfbDoBitblt (pSrc, pDst, alu, prgnDst, pptSrc, planemask)
+ DrawablePtr pSrc, pDst;
+ int alu;
+ RegionPtr prgnDst;
+ DDXPointPtr pptSrc;
+ unsigned long planemask;
+{
+ void (*blt)() = cfbDoBitbltGeneral;
+ if ((planemask & PMSK) == PMSK) {
+ switch (alu) {
+ case GXcopy:
+ blt = cfbDoBitbltCopy;
+ break;
+ case GXxor:
+ blt = cfbDoBitbltXor;
+ break;
+ case GXor:
+ blt = cfbDoBitbltOr;
+ break;
+ }
+ }
+ (*blt) (pSrc, pDst, alu, prgnDst, pptSrc, planemask);
+}
+
+RegionPtr
+cfbCopyArea(pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty)
+ register DrawablePtr pSrcDrawable;
+ register DrawablePtr pDstDrawable;
+ GC *pGC;
+ int srcx, srcy;
+ int width, height;
+ int dstx, dsty;
+{
+ void (*doBitBlt) ();
+
+ doBitBlt = cfbDoBitbltCopy;
+ if (pGC->alu != GXcopy || (pGC->planemask & PMSK) != PMSK)
+ {
+ doBitBlt = cfbDoBitbltGeneral;
+ if ((pGC->planemask & PMSK) == PMSK)
+ {
+ switch (pGC->alu) {
+ case GXxor:
+ doBitBlt = cfbDoBitbltXor;
+ break;
+ case GXor:
+ doBitBlt = cfbDoBitbltOr;
+ break;
+ }
+ }
+ }
+ return cfbBitBlt (pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, 0L);
+}
+
+#if PSZ == 8
+void
+cfbCopyPlane1to8 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc, planemask, bitPlane)
+ DrawablePtr pSrcDrawable; /* must be a bitmap */
+ DrawablePtr pDstDrawable; /* must be depth 8 drawable */
+ int rop; /* not used; caller must call cfb8CheckOpaqueStipple
+ * beforehand to get cfb8StippleRRop set correctly */
+ unsigned long planemask; /* to apply to destination writes */
+ RegionPtr prgnDst; /* region in destination to draw to;
+ * screen relative coords. if dest is a window;
+ * drawable relative if dest is a pixmap */
+ DDXPointPtr pptSrc; /* drawable relative src coords to copy from;
+ * must be one point for each box in prgnDst */
+ unsigned long bitPlane; /* not used; assumed always to be 1 */
+{
+ int srcx, srcy; /* upper left corner of box being copied in source */
+ int dstx, dsty; /* upper left corner of box being copied in dest */
+ int width, height; /* in pixels, unpadded, of box being copied */
+ int xoffSrc; /* bit # in leftmost word of row from which copying starts */
+ int xoffDst; /* byte # in leftmost word of row from which copying starts */
+ unsigned long *psrcBase, *pdstBase; /* start of drawable's pixel data */
+ int widthSrc; /* # of groups of 32 pixels (1 bit/pixel) in src bitmap*/
+ int widthDst; /* # of groups of 4 pixels (8 bits/pixel) in dst */
+ unsigned long *psrcLine, *pdstLine; /* steps a row at a time thru src/dst;
+ * may point into middle of row */
+ register unsigned long *psrc, *pdst; /* steps within the row */
+ register unsigned long bits, tmp; /* bits from source */
+ register int leftShift;
+ register int rightShift;
+ unsigned long startmask; /* left edge pixel mask */
+ unsigned long endmask; /* right edge pixel mask */
+ register int nlMiddle; /* number of words in middle of the row to draw */
+ register int nl;
+ int firstoff;
+ int secondoff;
+ unsigned long src;
+ int nbox; /* number of boxes in region to copy */
+ BoxPtr pbox; /* steps thru boxes in region */
+ int pixelsRemainingOnRightEdge; /* # pixels to be drawn on a row after
+ * the main "middle" loop */
+
+ cfbGetLongWidthAndPointer (pSrcDrawable, widthSrc, psrcBase)
+ cfbGetLongWidthAndPointer (pDstDrawable, widthDst, pdstBase)
+
+ nbox = REGION_NUM_RECTS(prgnDst);
+ pbox = REGION_RECTS(prgnDst);
+ while (nbox--)
+ {
+ dstx = pbox->x1;
+ dsty = pbox->y1;
+ srcx = pptSrc->x;
+ srcy = pptSrc->y;
+ width = pbox->x2 - pbox->x1;
+ height = pbox->y2 - pbox->y1;
+ pbox++;
+ pptSrc++;
+
+ psrcLine = psrcBase + srcy * widthSrc + (srcx >> MFB_PWSH);
+ pdstLine = pdstBase + dsty * widthDst + (dstx >> PWSH);
+ xoffSrc = srcx & MFB_PIM; /* finds starting bit in src */
+ xoffDst = dstx & PIM; /* finds starting byte in dst */
+
+ /* compute startmask, endmask, nlMiddle */
+
+ if (xoffDst + width < PPW) /* XXX should this be '<= PPW' ? */
+ { /* the copy only affects one word per row in destination */
+ maskpartialbits(dstx, width, startmask);
+ endmask = 0; /* nothing on right edge */
+ nlMiddle = 0; /* nothing in middle */
+ }
+ else
+ { /* the copy will affect multiple words per row in destination */
+ maskbits(dstx, width, startmask, endmask, nlMiddle);
+ }
+
+ /*
+ * compute constants for the first four bits to be
+ * copied. This avoids troubles with partial first
+ * writes, and difficult shift computation
+ */
+ if (startmask)
+ {
+ firstoff = xoffSrc - xoffDst;
+ if (firstoff > (MFB_PPW-PPW))
+ secondoff = MFB_PPW - firstoff;
+ if (xoffDst)
+ {
+ srcx += (PPW-xoffDst);
+ xoffSrc = srcx & MFB_PIM;
+ }
+ }
+ leftShift = xoffSrc;
+ rightShift = MFB_PPW - leftShift;
+
+ pixelsRemainingOnRightEdge = (nlMiddle & 7) * PPW +
+ ((dstx + width) & PIM);
+
+ /* setup is done; now let's move some bits */
+
+ /* caller must call cfb8CheckOpaqueStipple before this function
+ * to set cfb8StippleRRop!
+ */
+
+ if (cfb8StippleRRop == GXcopy)
+ {
+ while (height--)
+ { /* one iteration of this loop copies one row */
+ psrc = psrcLine;
+ pdst = pdstLine;
+ psrcLine += widthSrc;
+ pdstLine += widthDst;
+ bits = *psrc++;
+ if (startmask)
+ {
+ if (firstoff < 0)
+ tmp = BitRight (bits, -firstoff);
+ else
+ {
+ tmp = BitLeft (bits, firstoff);
+ /*
+ * need a more cautious test for partialmask
+ * case...
+ */
+ if (firstoff >= (MFB_PPW-PPW))
+ {
+ bits = *psrc++;
+ if (firstoff != (MFB_PPW-PPW))
+ tmp |= BitRight (bits, secondoff);
+ }
+ }
+ *pdst = (*pdst & ~startmask) | (GetPixelGroup(tmp) & startmask);
+ pdst++;
+ }
+ nl = nlMiddle;
+ while (nl >= 8)
+ {
+ nl -= 8;
+ tmp = BitLeft(bits, leftShift);
+ bits = *psrc++;
+ if (rightShift != MFB_PPW)
+ tmp |= BitRight(bits, rightShift);
+
+#ifdef FAST_CONSTANT_OFFSET_MODE
+# define StorePixels(pdst,o,pixels) (pdst)[o] = (pixels)
+# define EndStep(pdst,o) (pdst) += (o)
+# define StoreRopPixels(pdst,o,and,xor) (pdst)[o] = DoRRop((pdst)[o],and,xor);
+#else
+# define StorePixels(pdst,o,pixels) *(pdst)++ = (pixels)
+# define EndStep(pdst,o)
+# define StoreRopPixels(pdst,o,and,xor) *(pdst) = DoRRop(*(pdst),and,xor); (pdst)++;
+#endif
+
+#define Step(c) NextBitGroup(c);
+#define StoreBitsPlain(o,c) StorePixels(pdst,o,GetPixelGroup(c))
+#define StoreRopBitsPlain(o,c) StoreRopPixels(pdst,o,\
+ cfb8StippleAnd[GetBitGroup(c)], \
+ cfb8StippleXor[GetBitGroup(c)])
+#define StoreBits0(c) StoreBitsPlain(0,c)
+#define StoreRopBits0(c) StoreRopBitsPlain(0,c)
+
+#if (BITMAP_BIT_ORDER == MSBFirst)
+# define StoreBits(o,c) StoreBitsPlain(o,c)
+# define StoreRopBits(o,c) StoreRopBitsPlain(o,c)
+# define FirstStep(c) Step(c)
+#else /* BITMAP_BIT_ORDER == LSBFirst */
+#if PGSZ == 64
+# define StoreBits(o,c) StorePixels(pdst,o, (cfb8Pixels[c & 0xff]))
+# define StoreRopBits(o,c) StoreRopPixels(pdst,o, \
+ (cfb8StippleAnd[c & 0xff]), \
+ (cfb8StippleXor[c & 0xff]))
+# define FirstStep(c) c = BitLeft (c, 8);
+#else
+/* 0x3c is 0xf << 2 (4 bits, long word) */
+# define StoreBits(o,c) StorePixels(pdst,o,*((unsigned long *)\
+ (((char *) cfb8Pixels) + (c & 0x3c))))
+# define StoreRopBits(o,c) StoreRopPixels(pdst,o, \
+ *((unsigned long *) (((char *) cfb8StippleAnd) + (c & 0x3c))), \
+ *((unsigned long *) (((char *) cfb8StippleXor) + (c & 0x3c))))
+# define FirstStep(c) c = BitLeft (c, 2);
+#endif /* PGSZ */
+#endif /* BITMAP_BIT_ORDER */
+
+ StoreBits0(tmp); FirstStep(tmp);
+ StoreBits(1,tmp); Step(tmp);
+ StoreBits(2,tmp); Step(tmp);
+ StoreBits(3,tmp); Step(tmp);
+ StoreBits(4,tmp); Step(tmp);
+ StoreBits(5,tmp); Step(tmp);
+ StoreBits(6,tmp); Step(tmp);
+ StoreBits(7,tmp); EndStep (pdst,8);
+ }
+
+ /* do rest of middle and partial word on right edge */
+
+ if (pixelsRemainingOnRightEdge)
+ {
+ tmp = BitLeft(bits, leftShift);
+
+ if (pixelsRemainingOnRightEdge > rightShift)
+ {
+ bits = *psrc++;
+ tmp |= BitRight (bits, rightShift);
+ }
+ EndStep (pdst, nl);
+ switch (nl)
+ {
+ case 7:
+ StoreBitsPlain(-7,tmp); Step(tmp);
+ case 6:
+ StoreBitsPlain(-6,tmp); Step(tmp);
+ case 5:
+ StoreBitsPlain(-5,tmp); Step(tmp);
+ case 4:
+ StoreBitsPlain(-4,tmp); Step(tmp);
+ case 3:
+ StoreBitsPlain(-3,tmp); Step(tmp);
+ case 2:
+ StoreBitsPlain(-2,tmp); Step(tmp);
+ case 1:
+ StoreBitsPlain(-1,tmp); Step(tmp);
+ }
+ if (endmask)
+ *pdst = (*pdst & ~endmask) | (GetPixelGroup(tmp) & endmask);
+ }
+ }
+ }
+ else /* cfb8StippleRRop != GXcopy */
+ {
+ while (height--)
+ { /* one iteration of this loop copies one row */
+ psrc = psrcLine;
+ pdst = pdstLine;
+ psrcLine += widthSrc;
+ pdstLine += widthDst;
+ bits = *psrc++;
+
+ /* do partial word on left edge */
+
+ if (startmask)
+ {
+ if (firstoff < 0)
+ tmp = BitRight (bits, -firstoff);
+ else
+ {
+ tmp = BitLeft (bits, firstoff);
+ if (firstoff >= (MFB_PPW-PPW))
+ {
+ bits = *psrc++;
+ if (firstoff != (MFB_PPW-PPW))
+ tmp |= BitRight (bits, secondoff);
+ }
+ }
+ src = GetBitGroup(tmp);
+ *pdst = MaskRRopPixels (*pdst, src, startmask);
+ pdst++;
+ }
+
+ /* do middle of row */
+
+ nl = nlMiddle;
+ while (nl >= 8)
+ {
+ nl -= 8;
+ tmp = BitLeft(bits, leftShift);
+ bits = *psrc++;
+ if (rightShift != MFB_PPW)
+ tmp |= BitRight(bits, rightShift);
+ StoreRopBits0(tmp); FirstStep(tmp);
+ StoreRopBits(1,tmp); Step(tmp);
+ StoreRopBits(2,tmp); Step(tmp);
+ StoreRopBits(3,tmp); Step(tmp);
+ StoreRopBits(4,tmp); Step(tmp);
+ StoreRopBits(5,tmp); Step(tmp);
+ StoreRopBits(6,tmp); Step(tmp);
+ StoreRopBits(7,tmp); EndStep(pdst,8);
+ }
+
+ /* do rest of middle and partial word on right edge */
+
+ if (pixelsRemainingOnRightEdge)
+ {
+ tmp = BitLeft(bits, leftShift);
+
+ if (pixelsRemainingOnRightEdge > rightShift)
+ {
+ bits = *psrc++; /* XXX purify abr here */
+ tmp |= BitRight (bits, rightShift);
+ }
+ while (nl--)
+ {
+ src = GetBitGroup (tmp);
+ *pdst = RRopPixels (*pdst, src);
+ pdst++;
+ NextBitGroup(tmp);
+ }
+ if (endmask)
+ {
+ src = GetBitGroup (tmp);
+ *pdst = MaskRRopPixels (*pdst, src, endmask);
+ }
+ }
+ } /* end copy one row */
+ } /* end alu is non-copy-mode case */
+ } /* end iteration over region boxes */
+}
+
+#endif
+
+/* shared among all different cfb depths through linker magic */
+RegionPtr (*cfbPuntCopyPlane)();
+
+RegionPtr cfbCopyPlane(pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, bitPlane)
+ DrawablePtr pSrcDrawable;
+ DrawablePtr pDstDrawable;
+ GCPtr pGC;
+ int srcx, srcy;
+ int width, height;
+ int dstx, dsty;
+ unsigned long bitPlane;
+{
+ RegionPtr ret;
+ extern RegionPtr miHandleExposures();
+ void (*doBitBlt)();
+
+#if PSZ == 8
+
+ if (pSrcDrawable->bitsPerPixel == 1 && pDstDrawable->bitsPerPixel == 8)
+ {
+ if (bitPlane == 1)
+ {
+ doBitBlt = cfbCopyPlane1to8;
+ cfb8CheckOpaqueStipple (pGC->alu,
+ pGC->fgPixel, pGC->bgPixel,
+ pGC->planemask);
+ ret = cfbBitBlt (pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, bitPlane);
+ }
+ else
+ ret = miHandleExposures (pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, bitPlane);
+ }
+ else if (pSrcDrawable->bitsPerPixel == 8 && pDstDrawable->bitsPerPixel == 1)
+ {
+ extern int InverseAlu[16];
+ int oldalu;
+
+ oldalu = pGC->alu;
+ if ((pGC->fgPixel & 1) == 0 && (pGC->bgPixel&1) == 1)
+ pGC->alu = InverseAlu[pGC->alu];
+ else if ((pGC->fgPixel & 1) == (pGC->bgPixel & 1))
+ pGC->alu = mfbReduceRop(pGC->alu, pGC->fgPixel);
+ ret = cfbBitBlt (pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty,
+ cfbCopyPlane8to1, bitPlane);
+ pGC->alu = oldalu;
+ }
+ else if (pSrcDrawable->bitsPerPixel == 8 && pDstDrawable->bitsPerPixel == 8)
+ {
+ PixmapPtr pBitmap;
+ ScreenPtr pScreen = pSrcDrawable->pScreen;
+ GCPtr pGC1;
+
+ pBitmap = (*pScreen->CreatePixmap) (pScreen, width, height, 1);
+ if (!pBitmap)
+ return NULL;
+ pGC1 = GetScratchGC (1, pScreen);
+ if (!pGC1)
+ {
+ (*pScreen->DestroyPixmap) (pBitmap);
+ return NULL;
+ }
+ /*
+ * don't need to set pGC->fgPixel,bgPixel as copyPlane8to1
+ * ignores pixel values, expecting the rop to "do the
+ * right thing", which GXcopy will.
+ */
+ ValidateGC ((DrawablePtr) pBitmap, pGC1);
+ /* no exposures here, scratch GC's don't get graphics expose */
+ (void) cfbBitBlt (pSrcDrawable, (DrawablePtr) pBitmap,
+ pGC1, srcx, srcy, width, height, 0, 0,
+ cfbCopyPlane8to1, bitPlane);
+ cfb8CheckOpaqueStipple (pGC->alu,
+ pGC->fgPixel, pGC->bgPixel,
+ pGC->planemask);
+ /* no exposures here, copy bits from inside a pixmap */
+ (void) cfbBitBlt ((DrawablePtr) pBitmap, pDstDrawable, pGC,
+ 0, 0, width, height, dstx, dsty, cfbCopyPlane1to8, 1);
+ FreeScratchGC (pGC1);
+ (*pScreen->DestroyPixmap) (pBitmap);
+ /* compute resultant exposures */
+ ret = miHandleExposures (pSrcDrawable, pDstDrawable, pGC,
+ srcx, srcy, width, height,
+ dstx, dsty, bitPlane);
+ }
+ else
+#endif
+ ret = (*cfbPuntCopyPlane) (pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, bitPlane);
+ return ret;
+}
projects / rdpsrv / blobdiff