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-rw-r--r--cfb/cfbcppl.c486
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diff --git a/cfb/cfbcppl.c b/cfb/cfbcppl.c
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+/*
+ * $TOG: cfb8cppl.c /main/16 1998/02/09 14:04:13 kaleb $
+ *
+Copyright 1990, 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, MIT X Consortium
+ */
+/* $XFree86: xc/programs/Xserver/cfb/cfbcppl.c,v 1.6 2001/12/14 19:59:22 dawes Exp $ */
+
+#include "X.h"
+#include "Xmd.h"
+#include "gcstruct.h"
+#include "window.h"
+#include "pixmapstr.h"
+#include "scrnintstr.h"
+#include "windowstr.h"
+#include "cfb.h"
+#if PSZ == 8
+#undef PSZ /* for maskbits.h */
+#include "maskbits.h"
+#define PSZ 8
+#include "mergerop.h"
+#endif
+
+
+void
+cfbCopyImagePlane (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc, planemask)
+ DrawablePtr pSrcDrawable;
+ DrawablePtr pDstDrawable;
+ int rop;
+ RegionPtr prgnDst;
+ DDXPointPtr pptSrc;
+ unsigned long planemask;
+{
+#if PSZ == 8
+ cfbCopyPlane8to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
+ (unsigned long) ~0L, planemask);
+#endif
+#if PSZ == 16
+ cfbCopyPlane16to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
+ (unsigned long) ~0L, planemask);
+#endif
+#if PSZ == 24
+ cfbCopyPlane24to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
+ (unsigned long) ~0L, planemask);
+#endif
+#if PSZ == 32
+ cfbCopyPlane32to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
+ (unsigned long) ~0L, planemask);
+#endif
+}
+
+#if PSZ == 8
+
+#if BITMAP_BIT_ORDER == MSBFirst
+#define LeftMost (MFB_PPW-1)
+#define StepBit(bit, inc) ((bit) -= (inc))
+#else
+#define LeftMost 0
+#define StepBit(bit, inc) ((bit) += (inc))
+#endif
+
+#define GetBits(psrc, nBits, curBit, bitPos, bits) {\
+ bits = 0; \
+ while (nBits--) \
+ { \
+ bits |= (PixelType)(((*psrc++ >> bitPos) & 1)) << curBit; \
+ StepBit (curBit, 1); \
+ } \
+}
+
+void
+cfbCopyPlane8to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc, planemask, bitPlane)
+ DrawablePtr pSrcDrawable;
+ DrawablePtr pDstDrawable;
+ int rop;
+ RegionPtr prgnDst;
+ DDXPointPtr pptSrc;
+ unsigned long planemask;
+ unsigned long bitPlane;
+{
+ int srcx, srcy, dstx, dsty, width, height;
+ unsigned char *psrcBase;
+ PixelType *pdstBase;
+ int widthSrc, widthDst;
+ unsigned char *psrcLine;
+ PixelType *pdstLine;
+ register unsigned char *psrc;
+ register int i;
+ register int curBit;
+ register int bitPos;
+ register CfbBits bits;
+ register PixelType *pdst;
+ PixelType startmask, endmask;
+ int niStart = 0, niEnd = 0;
+ int bitStart = 0, bitEnd = 0;
+ int nl, nlMiddle;
+ int nbox;
+ BoxPtr pbox;
+ MROP_DECLARE()
+
+ if (!(planemask & 1))
+ return;
+
+ if (rop != GXcopy)
+ MROP_INITIALIZE (rop, planemask);
+
+ cfbGetByteWidthAndPointer (pSrcDrawable, widthSrc, psrcBase)
+
+ mfbGetPixelWidthAndPointer (pDstDrawable, widthDst, pdstBase)
+
+ bitPos = ffs (bitPlane) - 1;
+
+ 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;
+ pdstLine = mfbScanline(pdstBase, dstx, dsty, widthDst);
+ dstx &= MFB_PIM;
+ if (dstx + width <= MFB_PPW)
+ {
+ maskpartialbits(dstx, width, startmask);
+ nlMiddle = 0;
+ endmask = 0;
+ }
+ else
+ {
+ maskbits (dstx, width, startmask, endmask, nlMiddle);
+ }
+ if (startmask)
+ {
+ niStart = min(MFB_PPW - dstx, width);
+ bitStart = LeftMost;
+ StepBit (bitStart, dstx);
+ }
+ if (endmask)
+ {
+ niEnd = (dstx + width) & MFB_PIM;
+ bitEnd = LeftMost;
+ }
+ if (rop == GXcopy)
+ {
+ while (height--)
+ {
+ psrc = psrcLine;
+ pdst = pdstLine;
+ psrcLine += widthSrc;
+ mfbScanlineInc(pdstLine, widthDst);
+ if (startmask)
+ {
+ i = niStart;
+ curBit = bitStart;
+ GetBits (psrc, i, curBit, bitPos, bits);
+ *pdst = (*pdst & ~startmask) | bits;
+ pdst++;
+ }
+ nl = nlMiddle;
+ while (nl--)
+ {
+ i = MFB_PPW;
+ curBit = LeftMost;
+ GetBits (psrc, i, curBit, bitPos, bits);
+ *pdst++ = bits;
+ }
+ if (endmask)
+ {
+ i = niEnd;
+ curBit = bitEnd;
+ GetBits (psrc, i, curBit, bitPos, bits);
+ *pdst = (*pdst & ~endmask) | bits;
+ }
+ }
+ }
+ else
+ {
+ while (height--)
+ {
+ psrc = psrcLine;
+ pdst = pdstLine;
+ psrcLine += widthSrc;
+ mfbScanlineInc(pdstLine, widthDst);
+ if (startmask)
+ {
+ i = niStart;
+ curBit = bitStart;
+ GetBits (psrc, i, curBit, bitPos, bits);
+ *pdst = MROP_MASK(bits, *pdst, startmask);
+ pdst++;
+ }
+ nl = nlMiddle;
+ while (nl--)
+ {
+ i = MFB_PPW;
+ curBit = LeftMost;
+ GetBits (psrc, i, curBit, bitPos, bits);
+ *pdst = MROP_SOLID(bits, *pdst);
+ pdst++;
+ }
+ if (endmask)
+ {
+ i = niEnd;
+ curBit = bitEnd;
+ GetBits (psrc, i, curBit, bitPos, bits);
+ *pdst = MROP_MASK (bits, *pdst, endmask);
+ }
+ }
+ }
+ }
+}
+
+#else /* PSZ == 8 */
+
+#define mfbmaskbits(x, w, startmask, endmask, nlw) \
+ startmask = starttab[(x)&0x1f]; \
+ endmask = endtab[((x)+(w)) & 0x1f]; \
+ if (startmask) \
+ nlw = (((w) - (32 - ((x)&0x1f))) >> 5); \
+ else \
+ nlw = (w) >> 5;
+
+#define mfbmaskpartialbits(x, w, mask) \
+ mask = partmasks[(x)&0x1f][(w)&0x1f];
+
+#define LeftMost 0
+#define StepBit(bit, inc) ((bit) += (inc))
+
+
+#if PSZ == 24
+#define GetBits(psrc, nBits, curBit, bitPos, bits) {\
+ bits = 0; \
+ while (nBits--) \
+ { \
+ if (bitPos < 8) \
+ { \
+ bits |= ((*psrc++ >> bitPos) & 1) << curBit; \
+ psrc += 2; \
+ } \
+ else if (bitPos < 16) \
+ { \
+ psrc++; \
+ bits |= ((*psrc++ >> (bitPos - 8)) & 1) << curBit; \
+ psrc++; \
+ } \
+ else \
+ { \
+ psrc += 2; \
+ bits |= ((*psrc++ >> (bitPos - 16)) & 1) << curBit; \
+ } \
+ StepBit (curBit, 1); \
+ } \
+}
+#else
+#define GetBits(psrc, nBits, curBit, bitPos, bits) {\
+ bits = 0; \
+ while (nBits--) \
+ { \
+ bits |= ((*psrc++ >> bitPos) & 1) << curBit; \
+ StepBit (curBit, 1); \
+ } \
+}
+#endif
+
+void
+#if PSZ == 16
+cfbCopyPlane16to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
+ planemask, bitPlane)
+#endif
+#if PSZ == 24
+cfbCopyPlane24to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
+ planemask, bitPlane)
+#endif
+#if PSZ == 32
+cfbCopyPlane32to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
+ planemask, bitPlane)
+#endif
+ DrawablePtr pSrcDrawable;
+ DrawablePtr pDstDrawable;
+ int rop;
+ RegionPtr prgnDst;
+ DDXPointPtr pptSrc;
+ unsigned long planemask;
+ unsigned long bitPlane;
+{
+ int srcx, srcy, dstx, dsty, width, height;
+ CfbBits *psrcBase;
+ CfbBits *pdstBase;
+ int widthSrc, widthDst;
+#if PSZ == 16
+ unsigned short *psrcLine;
+ register unsigned short *psrc;
+#endif
+#if PSZ == 24
+ unsigned char *psrcLine;
+ register unsigned char *psrc;
+#endif
+#if PSZ == 32
+ unsigned int *psrcLine;
+ register unsigned int *psrc;
+#endif
+ unsigned int *pdstLine;
+ register unsigned int *pdst;
+ register int i;
+ register int curBit;
+ register int bitPos;
+ register unsigned int bits;
+ unsigned int startmask, endmask;
+ int niStart = 0, niEnd = 0;
+ int bitStart = 0, bitEnd = 0;
+ int nl, nlMiddle;
+ int nbox;
+ BoxPtr pbox;
+ int result;
+
+ extern int starttab[32], endtab[32];
+ extern unsigned int partmasks[32][32];
+
+
+ if (!(planemask & 1))
+ return;
+
+ /* must explicitly ask for "int" widths, as code below expects it */
+ /* on some machines (Alpha), "long" and "int" are not the same size */
+ cfbGetTypedWidthAndPointer (pSrcDrawable, widthSrc, psrcBase, int, CfbBits)
+ cfbGetTypedWidthAndPointer (pDstDrawable, widthDst, pdstBase, int, CfbBits)
+
+#if PSZ == 16
+ widthSrc <<= 1;
+#endif
+#if PSZ == 24
+ widthSrc <<= 2;
+#endif
+
+ bitPos = ffs (bitPlane) - 1;
+
+ 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++;
+#if PSZ == 16
+ psrcLine = (unsigned short *)psrcBase + srcy * widthSrc + srcx;
+#endif
+#if PSZ == 24
+ psrcLine = (unsigned char *)psrcBase + srcy * widthSrc + srcx * 3;
+#endif
+#if PSZ == 32
+ psrcLine = (unsigned int *)psrcBase + srcy * widthSrc + srcx;
+#endif
+ pdstLine = (unsigned int *)pdstBase + dsty * widthDst + (dstx >> 5);
+ if (dstx + width <= 32)
+ {
+ mfbmaskpartialbits(dstx, width, startmask);
+ nlMiddle = 0;
+ endmask = 0;
+ }
+ else
+ {
+ mfbmaskbits (dstx, width, startmask, endmask, nlMiddle);
+ }
+ if (startmask)
+ {
+ niStart = 32 - (dstx & 0x1f);
+ bitStart = LeftMost;
+ StepBit (bitStart, (dstx & 0x1f));
+ }
+ if (endmask)
+ {
+ niEnd = (dstx + width) & 0x1f;
+ bitEnd = LeftMost;
+ }
+ if (rop == GXcopy)
+ {
+ while (height--)
+ {
+ psrc = psrcLine;
+ pdst = pdstLine;
+ psrcLine += widthSrc;
+ pdstLine += widthDst;
+ if (startmask)
+ {
+ i = niStart;
+ curBit = bitStart;
+ GetBits (psrc, i, curBit, bitPos, bits);
+
+ *pdst = (*pdst & ~startmask) | bits;
+ pdst++;
+ }
+ nl = nlMiddle;
+ while (nl--)
+ {
+ i = 32;
+ curBit = LeftMost;
+ GetBits (psrc, i, curBit, bitPos, bits);
+ *pdst++ = bits;
+ }
+ if (endmask)
+ {
+ i = niEnd;
+ curBit = bitEnd;
+ GetBits (psrc, i, curBit, bitPos, bits);
+
+ *pdst = (*pdst & ~endmask) | bits;
+ }
+ }
+ }
+ else
+ {
+ while (height--)
+ {
+ psrc = psrcLine;
+ pdst = pdstLine;
+ psrcLine += widthSrc;
+ pdstLine += widthDst;
+ if (startmask)
+ {
+ i = niStart;
+ curBit = bitStart;
+ GetBits (psrc, i, curBit, bitPos, bits);
+ DoRop (result, rop, bits, *pdst);
+
+ *pdst = (*pdst & ~startmask) |
+ (result & startmask);
+ pdst++;
+ }
+ nl = nlMiddle;
+ while (nl--)
+ {
+ i = 32;
+ curBit = LeftMost;
+ GetBits (psrc, i, curBit, bitPos, bits);
+ DoRop (result, rop, bits, *pdst);
+ *pdst = result;
+ ++pdst;
+ }
+ if (endmask)
+ {
+ i = niEnd;
+ curBit = bitEnd;
+ GetBits (psrc, i, curBit, bitPos, bits);
+ DoRop (result, rop, bits, *pdst);
+
+ *pdst = (*pdst & ~endmask) |
+ (result & endmask);
+ }
+ }
+ }
+ }
+}
+
+#endif /* PSZ == 8 */
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