4.4BSD/usr/src/contrib/X11R5-hp300/mit/server/ddx/hpbsd/cfb/cfbteblt8.c
/*
* TEGblt - ImageText expanded glyph fonts only. For
* 8 bit displays, in Copy mode with no clipping.
*/
/*
Copyright 1989 by the Massachusetts Institute of Technology
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of M.I.T. not be used in
advertising or publicity pertaining to distribution of the software
without specific, written prior permission. M.I.T. makes no
representations about the suitability of this software for any
purpose. It is provided "as is" without express or implied warranty.
*/
/* $XConsortium: cfbteblt8.c,v 5.14 91/04/10 11:41:38 keith Exp $ */
#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"
#if (PPW == 4)
/*
* this code supports up to 5 characters at a time. The performance
* differences between 4 and 5 is usually small (~7% on PMAX) and
* frequently negative (SPARC and Sun3), so this file is compiled
* only once for now. If you want to use the other options, you'll
* need to hack cfbgc.c as well.
*/
#ifndef NGLYPHS
#define NGLYPHS 4
#endif
#if NGLYPHS == 4
#define DO_COMMON
#endif
#ifdef DO_COMMON
#define CFBTEGBLT8 cfbTEGlyphBlt8
#endif
/*
* On little-endian machines (or where fonts are padded to 32-bit
* boundaries) we can use some magic to avoid the expense of getleftbits
*/
#if ((BITMAP_BIT_ORDER == LSBFirst && NGLYPHS >= 4) || GLYPHPADBYTES == 4)
#if GLYPHPADBYTES == 1
typedef unsigned char *glyphPointer;
#define USE_LEFTBITS
#endif
#if GLYPHPADBYTES == 2
typedef unsigned short *glyphPointer;
#define USE_LEFTBITS
#endif
#if GLYPHPADBYTES == 4
typedef unsigned int *glyphPointer;
#endif
#define GetBitsL c = BitLeft (*leftChar++, lshift)
#define GetBits1S c = BitRight(*char1++, xoff1)
#define GetBits1L GetBitsL | BitRight(*char1++, xoff1)
#define GetBits1U c = *char1++
#define GetBits2S GetBits1S | BitRight(*char2++, xoff2)
#define GetBits2L GetBits1L | BitRight(*char2++, xoff2)
#define GetBits2U GetBits1U | BitRight(*char2++, xoff2)
#define GetBits3S GetBits2S | BitRight(*char3++, xoff3)
#define GetBits3L GetBits2L | BitRight(*char3++, xoff3)
#define GetBits3U GetBits2U | BitRight(*char3++, xoff3)
#define GetBits4S GetBits3S | BitRight(*char4++, xoff4)
#define GetBits4L GetBits3L | BitRight(*char4++, xoff4)
#define GetBits4U GetBits3U | BitRight(*char4++, xoff4)
#define GetBits5S GetBits4S | BitRight(*char5++, xoff5)
#define GetBits5L GetBits4L | BitRight(*char5++, xoff5)
#define GetBits5U GetBits4U | BitRight(*char5++, xoff5)
#else
typedef unsigned char *glyphPointer;
#define USE_LEFTBITS
#define GetBitsL WGetBitsL
#define GetBits1S WGetBits1S
#define GetBits1L WGetBits1L
#define GetBits1U WGetBits1U
#define GetBits2S GetBits1S Get1Bits (char2, tmpSrc) \
c |= BitRight(tmpSrc, xoff2);
#define GetBits2L GetBits1L Get1Bits (char2, tmpSrc) \
c |= BitRight(tmpSrc, xoff2);
#define GetBits2U GetBits1U Get1Bits (char2, tmpSrc) \
c |= BitRight(tmpSrc, xoff2);
#define GetBits3S GetBits2S Get1Bits (char3, tmpSrc) \
c |= BitRight(tmpSrc, xoff3);
#define GetBits3L GetBits2L Get1Bits (char3, tmpSrc) \
c |= BitRight(tmpSrc, xoff3);
#define GetBits3U GetBits2U Get1Bits (char3, tmpSrc) \
c |= BitRight(tmpSrc, xoff3);
#define GetBits4S GetBits3S Get1Bits (char4, tmpSrc) \
c |= BitRight(tmpSrc, xoff4);
#define GetBits4L GetBits3L Get1Bits (char4, tmpSrc) \
c |= BitRight(tmpSrc, xoff4);
#define GetBits4U GetBits3U Get1Bits (char4, tmpSrc) \
c |= BitRight(tmpSrc, xoff4);
#define GetBits5S GetBits4S Get1Bits (char5, tmpSrc) \
c |= BitRight(tmpSrc, xoff5);
#define GetBits5L GetBits4L Get1Bits (char5, tmpSrc) \
c |= BitRight(tmpSrc, xoff5);
#define GetBits5U GetBits4U Get1Bits (char5, tmpSrc) \
c |= BitRight(tmpSrc, xoff5);
#endif
#ifdef USE_LEFTBITS
extern long endtab[];
#define IncChar(c) (c = (glyphPointer) (((char *) c) + glyphBytes))
#define Get1Bits(ch,dst) glyphbits (ch, widthGlyph, glyphMask, dst); \
IncChar (ch);
#define glyphbits(bits,width,mask,dst) getleftbits(bits,width,dst); \
dst &= mask;
#define WGetBitsL Get1Bits(leftChar,c); \
c = BitLeft (c, lshift);
#define WGetBits1S Get1Bits (char1, c) \
c = BitRight (c, xoff1);
#define WGetBits1L WGetBitsL Get1Bits (char1, tmpSrc) \
c |= BitRight (tmpSrc, xoff1);
#define WGetBits1U Get1Bits (char1, c)
#else
#define WGetBitsL GetBitsL
#define WGetBits1S GetBits1S
#define WGetBits1L GetBits1L
#define WGetBits1U GetBits1U
#endif
#if NGLYPHS == 2
# define GetBitsNS GetBits2S
# define GetBitsNL GetBits2L
# define GetBitsNU GetBits2U
# define LastChar char2
#ifndef CFBTEGBLT8
# define CFBTEGBLT8 cfbTEGlyphBlt8x2
#endif
#endif
#if NGLYPHS == 3
# define GetBitsNS GetBits3S
# define GetBitsNL GetBits3L
# define GetBitsNU GetBits3U
# define LastChar char3
#ifndef CFBTEGBLT8
# define CFBTEGBLT8 cfbTEGlyphBlt8x3
#endif
#endif
#if NGLYPHS == 4
# define GetBitsNS GetBits4S
# define GetBitsNL GetBits4L
# define GetBitsNU GetBits4U
# define LastChar char4
#ifndef CFBTEGBLT8
# define CFBTEGBLT8 cfbTEGlyphBlt8x4
#endif
#endif
#if NGLYPHS == 5
# define GetBitsNS GetBits5S
# define GetBitsNL GetBits5L
# define GetBitsNU GetBits5U
# define LastChar char5
#ifndef CFBTEGBLT8
# define CFBTEGBLT8 cfbTEGlyphBlt8x5
#endif
#endif
/* another ugly giant macro */
#define SwitchEm switch (ew) \
{ \
case 0: \
break; \
case 1: \
while (hTmp--) { \
GetBits; \
StoreBits0 \
Loop \
} \
break; \
case 2: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) \
Loop \
} \
break; \
case 3: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step StoreBits(2) \
Loop \
} \
break; \
case 4: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step \
StoreBits(2) Step StoreBits(3) \
Loop \
} \
break; \
case 5: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step \
StoreBits(2) Step StoreBits(3) Step \
StoreBits(4) \
Loop \
} \
break; \
case 6: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step \
StoreBits(2) Step StoreBits(3) Step \
StoreBits(4) Step StoreBits(5) \
Loop \
} \
break; \
case 7: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step \
StoreBits(2) Step StoreBits(3) Step \
StoreBits(4) Step StoreBits(5) Step \
StoreBits(6) \
Loop \
} \
break; \
case 8: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step \
StoreBits(2) Step StoreBits(3) Step \
StoreBits(4) Step StoreBits(5) Step \
StoreBits(6) Step StoreBits(7) \
Loop \
} \
break; \
}
#ifdef FAST_CONSTANT_OFFSET_MODE
#define StorePixels(o,p) dst[o] = p
#define Loop dst += widthDst;
#else
#define StorePixels(o,p) *dst++ = (p)
#define Loop dst += widthLeft;
#endif
#define Step NextFourBits(c);
#if (BITMAP_BIT_ORDER == MSBFirst)
#define StoreBits(o) StorePixels(o,GetFourPixels(c));
#define FirstStep Step
#else
#define StoreBits(o) StorePixels(o,*((unsigned long *) (((char *) cfb8Pixels) + (c & 0x3c))));
#define FirstStep c = BitLeft (c, 2);
#endif
extern void cfbImageGlyphBlt8();
void
CFBTEGBLT8 (pDrawable, pGC, xInit, yInit, nglyph, ppci, pglyphBase)
DrawablePtr pDrawable;
GC *pGC;
int xInit, yInit;
unsigned int nglyph;
CharInfoPtr *ppci; /* array of character info */
unsigned char *pglyphBase; /* start of array of glyphs */
{
register unsigned long c;
register unsigned long *dst;
register unsigned long leftMask, rightMask;
register int hTmp;
register int xoff1;
register int xoff2;
#if NGLYPHS >= 3
register int xoff3;
#endif
#if NGLYPHS >= 4
register int xoff4;
#endif
#if NGLYPHS >= 5
register int xoff5;
#endif
register glyphPointer char1;
register glyphPointer char2;
#if NGLYPHS >= 3
register glyphPointer char3;
#endif
#if NGLYPHS >= 4
register glyphPointer char4;
#endif
#if NGLYPHS >= 5
register glyphPointer char5;
#endif
FontPtr pfont = pGC->font;
unsigned long *dstLine;
glyphPointer oldRightChar;
unsigned long *pdstBase;
glyphPointer leftChar;
int widthDst, widthLeft;
int widthGlyph;
int h;
int ew;
int x, y;
BoxRec bbox; /* for clipping */
int lshift;
int widthGlyphs;
#ifdef USE_LEFTBITS
register int glyphMask;
register unsigned int tmpSrc;
register int glyphBytes;
#endif
widthGlyph = FONTMAXBOUNDS(pfont,characterWidth);
h = FONTASCENT(pfont) + FONTDESCENT(pfont);
if (!h)
return;
x = xInit + FONTMAXBOUNDS(pfont,leftSideBearing) + pDrawable->x;
y = yInit - FONTASCENT(pfont) + pDrawable->y;
bbox.x1 = x;
bbox.x2 = x + (widthGlyph * nglyph);
bbox.y1 = y;
bbox.y2 = y + h;
switch ((*pGC->pScreen->RectIn)(
((cfbPrivGC *)(pGC->devPrivates[cfbGCPrivateIndex].ptr))->pCompositeClip, &bbox))
{
case rgnPART:
cfbImageGlyphBlt8(pDrawable, pGC, xInit, yInit, nglyph, ppci, pglyphBase);
case rgnOUT:
return;
}
if (!cfb8CheckPixels (pGC->fgPixel, pGC->bgPixel))
cfb8SetPixels (pGC->fgPixel, pGC->bgPixel);
leftChar = 0;
cfbGetLongWidthAndPointer(pDrawable, widthDst, pdstBase)
#if NGLYPHS == 2
widthGlyphs = widthGlyph << 1;
#else
#if NGLYPHS == 4
widthGlyphs = widthGlyph << 2;
#else
widthGlyphs = widthGlyph * NGLYPHS;
#endif
#endif
#ifdef USE_LEFTBITS
glyphMask = endtab[widthGlyph];
glyphBytes = GLYPHWIDTHBYTESPADDED(*ppci);
#endif
SET_REGISTERS_FOR_WRITING(pDrawable->pScreen, ~0, GXcopy);
pdstBase += y * widthDst;
#ifdef DO_COMMON
if (widthGlyphs <= 32)
#endif
while (nglyph >= NGLYPHS)
{
nglyph -= NGLYPHS;
hTmp = h;
dstLine = pdstBase + (x >> 2);
xoff1 = x & 0x3;
xoff2 = xoff1 + widthGlyph;
#if NGLYPHS >= 3
xoff3 = xoff2 + widthGlyph;
#endif
#if NGLYPHS >= 4
xoff4 = xoff3 + widthGlyph;
#endif
#if NGLYPHS >= 5
xoff5 = xoff4 + widthGlyph;
#endif
char1 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
char2 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
#if NGLYPHS >= 3
char3 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
#endif
#if NGLYPHS >= 4
char4 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
#endif
#if NGLYPHS >= 5
char5 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
#endif
oldRightChar = LastChar;
dst = dstLine;
if (xoff1)
{
ew = ((widthGlyphs - (4 - xoff1)) >> 2) + 1;
#ifndef FAST_CONSTANT_OFFSET_MODE
widthLeft = widthDst - ew;
#endif
if (!leftChar)
{
leftMask = cfbendtab[xoff1];
rightMask = cfbstarttab[xoff1];
#define StoreBits0 StorePixels (0,dst[0] & leftMask | \
GetFourPixels(c) & rightMask);
#define GetBits GetBitsNS
SwitchEm
#undef GetBits
#undef StoreBits0
}
else
{
lshift = widthGlyph - xoff1;
#define StoreBits0 StorePixels (0,GetFourPixels(c));
#define GetBits GetBitsNL
SwitchEm
#undef GetBits
#undef StoreBits0
}
}
else
{
#if NGLYPHS == 4
ew = widthGlyph; /* widthGlyphs >> 2 */
#else
ew = widthGlyphs >> 2;
#endif
#ifndef FAST_CONSTANT_OFFSET_MODE
widthLeft = widthDst - ew;
#endif
#define StoreBits0 StorePixels (0,GetFourPixels(c));
#define GetBits GetBitsNU
SwitchEm
#undef GetBits
#undef StoreBits0
}
x += widthGlyphs;
leftChar = oldRightChar;
}
while (nglyph--)
{
xoff1 = x & 0x3;
char1 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
hTmp = h;
dstLine = pdstBase + (x >> 2);
oldRightChar = char1;
dst = dstLine;
if (xoff1)
{
ew = ((widthGlyph - (4 - xoff1)) >> 2) + 1;
#ifndef FAST_CONSTANT_OFFSET_MODE
widthLeft = widthDst - ew;
#endif
if (!leftChar)
{
leftMask = cfbendtab[xoff1];
rightMask = cfbstarttab[xoff1];
#define StoreBits0 StorePixels (0,dst[0] & leftMask | GetFourPixels(c) & rightMask);
#define GetBits WGetBits1S
SwitchEm
#undef GetBits
#undef StoreBits0
}
else
{
lshift = widthGlyph - xoff1;
#define StoreBits0 StorePixels (0,GetFourPixels(c));
#define GetBits WGetBits1L
SwitchEm
#undef GetBits
#undef StoreBits0
}
}
else
{
ew = widthGlyph >> 2;
#ifndef FAST_CONSTANT_OFFSET_MODE
widthLeft = widthDst - ew;
#endif
#define StoreBits0 StorePixels (0,GetFourPixels(c));
#define GetBits WGetBits1U
SwitchEm
#undef GetBits
#undef StoreBits0
}
x += widthGlyph;
leftChar = oldRightChar;
}
/*
* draw the tail of the last character
*/
xoff1 = x & 3;
if (xoff1)
{
rightMask = cfbstarttab[xoff1];
leftMask = cfbendtab[xoff1];
lshift = widthGlyph - xoff1;
dst = pdstBase + (x >> 2);
hTmp = h;
while (hTmp--)
{
GetBitsL;
*dst = (*dst & rightMask) | (GetFourPixels(c) & leftMask);
dst += widthDst;
}
}
}
#endif /* PPW == 4 */