+++ /dev/null
-/* $XConsortium: cfbglblt8.c,v 5.31 94/04/17 20:28:51 dpw Exp $ */
-/* $XFree86: xc/programs/Xserver/cfb/cfbglblt8.c,v 3.1 1996/08/13 11:27:34 dawes Exp $ */
-/*
-
-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.
-*/
-
-/*
- * Poly glyph blt. Accepts an arbitrary font <= 32 bits wide, in Copy mode
- * only.
- */
-
-#include "X.h"
-#include "Xmd.h"
-#include "Xproto.h"
-#include "cfb.h"
-#include "fontstruct.h"
-#include "dixfontstr.h"
-#include "gcstruct.h"
-#include "windowstr.h"
-#include "scrnintstr.h"
-#include "pixmapstr.h"
-#include "regionstr.h"
-#include "cfbmskbits.h"
-#include "cfb8bit.h"
-
-#define BOX_OVERLAP(box1, box2, xoffset, yoffset) \
- ((box1)->x1 <= ((int) (box2)->x2 + (xoffset)) && \
- ((int) (box2)->x1 + (xoffset)) <= (box1)->x2 && \
- (box1)->y1 <= ((int) (box2)->y2 + (yoffset)) && \
- ((int) (box2)->y1 + (yoffset)) <= (box1)->y2)
-
-#define BOX_CONTAINS(box1, box2, xoffset, yoffset) \
- ((box1)->x1 <= ((int) (box2)->x1 + (xoffset)) && \
- ((int) (box2)->x2 + (xoffset)) <= (box1)->x2 && \
- (box1)->y1 <= ((int) (box2)->y1 + (yoffset)) && \
- ((int) (box2)->y2 + (yoffset)) <= (box1)->y2)
-
-#if defined(FOUR_BIT_CODE) || defined(WriteBitGroup) && !defined(GLYPHROP)
-
-#if GLYPHPADBYTES != 4
-#define USE_LEFTBITS
-#endif
-
-#ifdef USE_LEFTBITS
-typedef unsigned char *glyphPointer;
-extern unsigned long endtab[];
-
-#define GlyphBits(bits,width,dst) getleftbits(bits,width,dst); \
- (dst) &= widthMask; \
- (bits) += widthGlyph;
-#define GlyphBitsS(bits,width,dst,off) GlyphBits(bits,width,dst); \
- dst = BitRight (dst, off);
-#else
-typedef CARD32 *glyphPointer;
-
-#define GlyphBits(bits,width,dst) dst = *bits++;
-#define GlyphBitsS(bits,width,dst,off) dst = BitRight(*bits++, off);
-#endif
-
-#ifdef GLYPHROP
-#define cfbPolyGlyphBlt8 cfbPolyGlyphRop8
-#define cfbPolyGlyphBlt8Clipped cfbPolyGlyphRop8Clipped
-
-#undef WriteBitGroup
-#define WriteBitGroup(dst,pixel,bits) RRopBitGroup(dst,bits)
-
-#endif
-
-static void cfbPolyGlyphBlt8Clipped();
-
-#if defined(HAS_STIPPLE_CODE) && !defined(GLYPHROP) && !defined(USE_LEFTBITS)
-#define USE_STIPPLE_CODE
-#endif
-
-#if defined(__GNUC__) && !defined(GLYPHROP) && (defined(mc68020) || defined(mc68000) || defined(__mc68000__)) && PSZ == 8 && !defined(USE_LEFTBITS)
-#ifdef USE_STIPPLE_CODE
-#undef USE_STIPPLE_CODE
-#endif
-#include "stip68kgnu.h"
-#endif
-
-#if PSZ == 24
-#define DST_INC 3
-#else
-#define DST_INC (PGSZB >> PWSH)
-#endif
-
-/* cfbStippleStack/cfbStippleStackTE are coded in assembly language.
- * They are only provided on some architecures.
- */
-#ifdef USE_STIPPLE_CODE
-extern void cfbStippleStack (), cfbStippleStackTE ();
-#endif
-
-void
-cfbPolyGlyphBlt8 (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase)
- DrawablePtr pDrawable;
- GCPtr pGC;
- int x, y;
- unsigned int nglyph;
- CharInfoPtr *ppci; /* array of character info */
- pointer pglyphBase; /* start of array of glyphs */
-{
- register unsigned long c;
-#ifndef GLYPHROP
- register unsigned long pixel;
-#endif
- register unsigned long *dst;
- register glyphPointer glyphBits;
- register int xoff;
-
- FontPtr pfont = pGC->font;
- CharInfoPtr pci;
- unsigned long *dstLine;
- unsigned long *pdstBase;
- int hTmp;
- int bwidthDst;
- int widthDst;
- int h;
- int ew;
- BoxRec bbox; /* for clipping */
- int widthDiff;
- int w;
- RegionPtr clip;
- BoxPtr extents;
-#ifdef USE_LEFTBITS
- int widthGlyph;
- unsigned long widthMask;
-#endif
-#ifndef STIPPLE
-#ifdef USE_STIPPLE_CODE
- void (*stipple)();
-
- stipple = cfbStippleStack;
- if (FONTCONSTMETRICS(pfont))
- stipple = cfbStippleStackTE;
-#endif
-#endif
-
- x += pDrawable->x;
- y += pDrawable->y;
-
- /* compute an approximate (but covering) bounding box */
- bbox.x1 = 0;
- if ((ppci[0]->metrics.leftSideBearing < 0))
- bbox.x1 = ppci[0]->metrics.leftSideBearing;
- h = nglyph - 1;
- w = ppci[h]->metrics.rightSideBearing;
- while (--h >= 0)
- w += ppci[h]->metrics.characterWidth;
- bbox.x2 = w;
- bbox.y1 = -FONTMAXBOUNDS(pfont,ascent);
- bbox.y2 = FONTMAXBOUNDS(pfont,descent);
-
- clip = cfbGetCompositeClip(pGC);
- extents = &clip->extents;
-
- if (!clip->data)
- {
- if (!BOX_CONTAINS(extents, &bbox, x, y))
- {
- if (BOX_OVERLAP (extents, &bbox, x, y))
- cfbPolyGlyphBlt8Clipped(pDrawable, pGC, x, y,
- nglyph, ppci, pglyphBase);
- return;
- }
- }
- else
- {
- /* check to make sure some of the text appears on the screen */
- if (!BOX_OVERLAP (extents, &bbox, x, y))
- return;
-
- bbox.x1 += x;
- bbox.x2 += x;
- bbox.y1 += y;
- bbox.y2 += y;
-
- switch (RECT_IN_REGION(pGC->pScreen, clip, &bbox))
- {
- case rgnPART:
- cfbPolyGlyphBlt8Clipped(pDrawable, pGC, x, y,
- nglyph, ppci, pglyphBase);
- case rgnOUT:
- return;
- }
- }
-
-#ifdef GLYPHROP
- cfb8CheckStipple (pGC->alu, pGC->fgPixel, pGC->planemask);
-#else
- pixel = cfbGetGCPrivate(pGC)->xor;
-#endif
-
- cfbGetTypedWidthAndPointer (pDrawable, bwidthDst, pdstBase, char, unsigned long)
-
- widthDst = bwidthDst / PGSZB;
- while (nglyph--)
- {
- pci = *ppci++;
- glyphBits = (glyphPointer) FONTGLYPHBITS(pglyphBase,pci);
- xoff = x + pci->metrics.leftSideBearing;
-#if PSZ == 24
- dstLine = pdstBase + (y - pci->metrics.ascent) * widthDst +((xoff>> 2)*3);
-#else
- dstLine = pdstBase +
- (y - pci->metrics.ascent) * widthDst + (xoff >> PWSH);
-#endif
- x += pci->metrics.characterWidth;
- if (hTmp = pci->metrics.descent + pci->metrics.ascent)
- {
-#if PSZ == 24
- xoff &= 0x03;
-#else
- xoff &= PIM;
-#endif /* PSZ == 24 */
-#ifdef STIPPLE
- STIPPLE(dstLine,glyphBits,pixel,bwidthDst,hTmp,xoff);
-#else
-#ifdef USE_STIPPLE_CODE
- (*stipple)(dstLine,glyphBits,pixel,bwidthDst,hTmp,xoff);
-#else
-#ifdef USE_LEFTBITS
- w = pci->metrics.rightSideBearing - pci->metrics.leftSideBearing;
- widthGlyph = PADGLYPHWIDTHBYTES(w);
- widthMask = endtab[w];
-#endif
- do {
- dst = dstLine;
- dstLine = (unsigned long *) (((char *) dstLine) + bwidthDst);
- GlyphBits(glyphBits, w, c)
- WriteBitGroup(dst, pixel, GetBitGroup(BitRight(c,xoff)));
- dst += DST_INC;
- c = BitLeft(c,PGSZB - xoff);
- while (c)
- {
- WriteBitGroup(dst, pixel, GetBitGroup(c));
- NextBitGroup(c);
- dst += DST_INC;
- }
- } while (--hTmp);
-#endif /* USE_STIPPLE_CODE else */
-#endif /* STIPPLE else */
- }
- }
-}
-
-static void
-cfbPolyGlyphBlt8Clipped (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase)
- DrawablePtr pDrawable;
- GCPtr pGC;
- int x, y;
- unsigned int nglyph;
- CharInfoPtr *ppci; /* array of character info */
- unsigned char *pglyphBase; /* start of array of glyphs */
-{
- register unsigned long c;
-#ifndef GLYPHROP
- register unsigned long pixel;
-#endif
- register unsigned long *dst;
- register glyphPointer glyphBits;
- register int xoff;
- unsigned long c1;
-
- CharInfoPtr pci;
- FontPtr pfont = pGC->font;
- unsigned long *dstLine;
- unsigned long *pdstBase;
- CARD32 *cTmp, *clips;
- int maxAscent, maxDescent;
- int minLeftBearing;
- int hTmp;
- int widthDst;
- int bwidthDst;
- int ew;
- int xG, yG;
- BoxPtr pBox;
- int numRects;
- int widthDiff;
- int w;
- RegionPtr pRegion;
- int yBand;
-#ifdef GLYPHROP
- unsigned long bits;
-#endif
-#ifdef USE_LEFTBITS
- int widthGlyph;
- unsigned long widthMask;
-#endif
-
-#ifdef GLYPHROP
- cfb8CheckStipple (pGC->alu, pGC->fgPixel, pGC->planemask);
-#else
- pixel = cfbGetGCPrivate(pGC)->xor;
-#endif
-
- cfbGetTypedWidthAndPointer (pDrawable, bwidthDst, pdstBase, char, unsigned long)
-
- widthDst = bwidthDst / PGSZB;
- maxAscent = FONTMAXBOUNDS(pfont,ascent);
- maxDescent = FONTMAXBOUNDS(pfont,descent);
- minLeftBearing = FONTMINBOUNDS(pfont,leftSideBearing);
-
- pRegion = cfbGetCompositeClip(pGC);
-
- pBox = REGION_RECTS(pRegion);
- numRects = REGION_NUM_RECTS (pRegion);
- while (numRects && pBox->y2 <= y - maxAscent)
- {
- ++pBox;
- --numRects;
- }
- if (!numRects || pBox->y1 >= y + maxDescent)
- return;
- yBand = pBox->y1;
- while (numRects && pBox->y1 == yBand && pBox->x2 <= x + minLeftBearing)
- {
- ++pBox;
- --numRects;
- }
- if (!numRects)
- return;
- clips = (CARD32 *)ALLOCATE_LOCAL ((maxAscent + maxDescent) *
- sizeof (CARD32));
- while (nglyph--)
- {
- pci = *ppci++;
- glyphBits = (glyphPointer) FONTGLYPHBITS(pglyphBase,pci);
- w = pci->metrics.rightSideBearing - pci->metrics.leftSideBearing;
- xG = x + pci->metrics.leftSideBearing;
- yG = y - pci->metrics.ascent;
- x += pci->metrics.characterWidth;
- if (hTmp = pci->metrics.descent + pci->metrics.ascent)
- {
-#if PSZ == 24
- dstLine = pdstBase + yG * widthDst + ((xG>> 2)*3);
- /* never use (xG*3)>>2 */
-#else
- dstLine = pdstBase + yG * widthDst + (xG >> PWSH);
-#endif
-#if PSZ == 24
- xoff = xG & 3;
-#else
- xoff = xG & PIM;
-#endif
-#ifdef USE_LEFTBITS
- w = pci->metrics.rightSideBearing - pci->metrics.leftSideBearing;
- widthGlyph = PADGLYPHWIDTHBYTES(w);
- widthMask = endtab[w];
-#endif
- switch (cfb8ComputeClipMasks32 (pBox, numRects, xG, yG, w, hTmp, clips))
- {
- case rgnPART:
-#ifdef USE_LEFTBITS
- cTmp = clips;
- do {
- dst = dstLine;
- dstLine = (unsigned long *) (((char *) dstLine) + bwidthDst);
- GlyphBits(glyphBits, w, c)
- c &= *cTmp++;
- if (c)
- {
- WriteBitGroup(dst, pixel, GetBitGroup(BitRight(c,xoff)));
- c = BitLeft(c,PGSZB - xoff);
- dst += DST_INC;
- while (c)
- {
- WriteBitGroup(dst, pixel, GetBitGroup(c));
- NextBitGroup(c);
- dst += DST_INC;
- }
- }
- } while (--hTmp);
- break;
-#else /* !USE_LEFT_BITS */
- {
- int h;
-
- h = hTmp;
- do
- {
- --h;
- clips[h] = clips[h] & glyphBits[h];
- } while (h);
- }
- glyphBits = clips;
- /* fall through */
-#endif /* USE_LEFT_BITS */
- case rgnIN:
-#ifdef STIPPLE
- STIPPLE(dstLine,glyphBits,pixel,bwidthDst,hTmp,xoff);
-#else
-#ifdef USE_STIPPLE_CODE
- cfbStippleStackTE(dstLine,glyphBits,pixel,bwidthDst,hTmp,xoff);
-#else
- do {
- dst = dstLine;
- dstLine = (unsigned long *) (((char *) dstLine) + bwidthDst);
- GlyphBits(glyphBits, w, c)
- if (c)
- {
- /* This code originally could read memory locations
- * that were not mapped. Hence we have to check the
- * trailing bits to see whether they are zero and if
- * then skip them correctly. This is no problem for
- * the GXcopy case, since there only the pixels that
- * are non-zero are written ...
- */
-#ifndef GLYPHROP
- WriteBitGroup(dst, pixel, GetBitGroup(BitRight(c,xoff)));
- c = BitLeft(c,PGSZB - xoff);
- dst += DST_INC;
-#else /* GLYPHROP */
- if (bits = GetBitGroup(BitRight(c,xoff)))
- WriteBitGroup(dst, pixel, bits);
- c = BitLeft(c,PGSZB - xoff);
- dst += DST_INC;
-
- while (c && ((bits = GetBitGroup(c)) == 0))
- {
- NextBitGroup(c);
- dst += DST_INC;
- }
-#endif /* GLYPHROP */
- while (c)
- {
- WriteBitGroup(dst, pixel, GetBitGroup(c));
- NextBitGroup(c);
- dst += DST_INC;
- }
- }
- } while (--hTmp);
-#endif /* USE_STIPPLE_CODE else */
-#endif /* STIPPLE else */
- break;
- }
- }
- }
- DEALLOCATE_LOCAL (clips);
-}
-
-#endif /* FOUR_BIT_CODE */
projects / rdpsrv / blobdiff