--- /dev/null
+/************************************************************
+Copyright 1987 by Sun Microsystems, Inc. Mountain View, CA.
+
+ All Rights Reserved
+
+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 no-
+tice appear in all copies and that both that copyright no-
+tice and this permission notice appear in supporting docu-
+mentation, and that the names of Sun or X Consortium
+not be used in advertising or publicity pertaining to
+distribution of the software without specific prior
+written permission. Sun and X Consortium make no
+representations about the suitability of this software for
+any purpose. It is provided "as is" without any express or
+implied warranty.
+
+SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT-
+NESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SUN BE LI-
+ABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
+THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+********************************************************/
+
+/* $XConsortium: cfbmskbits.h,v 4.25 94/04/17 20:28:55 dpw Exp $ */
+/* $XFree86: xc/programs/Xserver/cfb/cfbmskbits.h,v 3.3.2.1 1997/05/27 06:28:09 dawes Exp $ */
+/* Optimizations for PSZ == 32 added by Kyle Marvin (marvin@vitec.com) */
+
+#include "X.h"
+#include "Xmd.h"
+#include "servermd.h"
+#ifdef XFREE86
+#define NO_COMPILER_H_EXTRAS
+#include "compiler.h"
+#endif
+
+/*
+ * ==========================================================================
+ * Converted from mfb to support memory-mapped color framebuffer by smarks@sun,
+ * April-May 1987.
+ *
+ * The way I did the conversion was to consider each longword as an
+ * array of four bytes instead of an array of 32 one-bit pixels. So
+ * getbits() and putbits() retain much the same calling sequence, but
+ * they move bytes around instead of bits. Of course, this entails the
+ * removal of all of the one-bit-pixel dependencies from the other
+ * files, but the major bit-hacking stuff should be covered here.
+ *
+ * I've created some new macros that make it easier to understand what's
+ * going on in the pixel calculations, and that make it easier to change the
+ * pixel size.
+ *
+ * name explanation
+ * ---- -----------
+ * PSZ pixel size (in bits)
+ * PGSZ pixel group size (in bits)
+ * PGSZB pixel group size (in bytes)
+ * PGSZBMSK mask with lowest PGSZB bits set to 1
+ * PPW pixels per word (pixels per pixel group)
+ * PPWMSK mask with lowest PPW bits set to 1
+ * PLST index of last pixel in a word (should be PPW-1)
+ * PIM pixel index mask (index within a pixel group)
+ * PWSH pixel-to-word shift (should be log2(PPW))
+ * PMSK mask with lowest PSZ bits set to 1
+ *
+ *
+ * Here are some sample values. In the notation cfbA,B: A is PSZ, and
+ * B is PGSZB. All the other values are derived from these
+ * two. This table does not show all combinations!
+ *
+ * name cfb8,4 cfb24,4 cfb32,4 cfb8,8 cfb24,8 cfb32,8
+ * ---- ------ ------- ------ ------ ------ -------
+ * PSZ 8 24 32 8 24 32
+ * PGSZ 32 32 32 64 64 64
+ * PGSZB 4 4 4 8 8 8
+ * PGSZBMSK 0xF 0xF? 0xF 0xFF 0xFF 0xFF
+ * PPW 4 1 1 8 2 2
+ * PPWMSK 0xF 0x1 0x1 0xFF 0x3? 0x3
+ * PLST 3 0 0 7 1 1
+ * PIM 0x3 0x0 0x0 0x7 0x1? 0x1
+ * PWSH 2 0 0 3 1 1
+ * PMSK 0xFF 0xFFFFFF 0xFFFFFFFF 0xFF 0xFFFFFF 0xFFFFFFFF
+ *
+ *
+ * I have also added a new macro, PFILL, that takes one pixel and
+ * replicates it throughout a word. This macro definition is dependent
+ * upon pixel and word size; it doesn't use macros like PPW and so
+ * forth. Examples: for monochrome, PFILL(1) => 0xffffffff, PFILL(0) =>
+ * 0x00000000. For 8-bit color, PFILL(0x5d) => 0x5d5d5d5d. This macro
+ * is used primarily for replicating a plane mask into a word.
+ *
+ * Color framebuffers operations also support the notion of a plane
+ * mask. This mask determines which planes of the framebuffer can be
+ * altered; the others are left unchanged. I have added another
+ * parameter to the putbits and putbitsrop macros that is the plane
+ * mask.
+ * ==========================================================================
+ */
+
+/*
+ * PSZ needs to be defined before we get here. Usually it comes from a
+ * -DPSZ=foo on the compilation command line.
+ */
+
+#ifndef PSZ
+#define PSZ 8
+#endif
+
+/*
+ * PixelGroup is the data type used to operate on groups of pixels.
+ * We typedef it here to unsigned long with the assumption that you
+ * want to manipulate as many pixels at a time as you can. If unsigned
+ * long is not appropriate for your server, define it to something else
+ * before including this file. In this case you will also have to define
+ * PGSZB to the size in bytes of PixelGroup.
+ */
+#ifndef PixelGroup
+typedef unsigned long PixelGroup;
+#ifdef LONG64
+#define PGSZB 8
+#else
+#define PGSZB 4
+#endif /* LONG64 */
+#endif /* PixelGroup */
+
+#define PGSZ (PGSZB << 3)
+#define PPW (PGSZ/PSZ)
+#define PLST (PPW-1)
+#define PIM PLST
+#define PMSK (((PixelGroup)1 << PSZ) - 1)
+#define PPWMSK (((PixelGroup)1 << PPW) - 1) /* instead of BITMSK */
+#define PGSZBMSK (((PixelGroup)1 << PGSZB) - 1)
+
+/* set PWSH = log2(PPW) using brute force */
+
+#if PPW == 1
+#define PWSH 0
+#else
+#if PPW == 2
+#define PWSH 1
+#else
+#if PPW == 4
+#define PWSH 2
+#else
+#if PPW == 8
+#define PWSH 3
+#else
+#if PPW == 16
+#define PWSH 4
+#endif /* PPW == 16 */
+#endif /* PPW == 8 */
+#endif /* PPW == 4 */
+#endif /* PPW == 2 */
+#endif /* PPW == 1 */
+
+/* Defining PIXEL_ADDR means that individual pixels are addressable by this
+ * machine (as type PixelType). A possible CFB architecture which supported
+ * 8-bits-per-pixel on a non byte-addressable machine would not have this
+ * defined.
+ *
+ * Defining FOUR_BIT_CODE means that cfb knows how to stipple on this machine;
+ * eventually, stippling code for 16 and 32 bit devices should be written
+ * which would allow them to also use FOUR_BIT_CODE. There isn't that
+ * much to do in those cases, but it would make them quite a bit faster.
+ */
+
+#if PSZ == 8
+#define PIXEL_ADDR
+typedef CARD8 PixelType;
+#define FOUR_BIT_CODE
+#endif
+
+#if PSZ == 16
+#define PIXEL_ADDR
+typedef CARD16 PixelType;
+#endif
+
+#if PSZ == 24
+#undef PMSK
+#define PMSK 0xFFFFFF
+/*#undef PIM
+#define PIM 3*/
+#define PIXEL_ADDR
+typedef CARD32 PixelType;
+#endif
+
+#if PSZ == 32
+#undef PMSK
+#define PMSK 0xFFFFFFFF
+#define PIXEL_ADDR
+typedef CARD32 PixelType;
+#endif
+
+
+/* the following notes use the following conventions:
+SCREEN LEFT SCREEN RIGHT
+in this file and maskbits.c, left and right refer to screen coordinates,
+NOT bit numbering in registers.
+
+cfbstarttab[n]
+ pixels[0,n-1] = 0's pixels[n,PPW-1] = 1's
+cfbendtab[n] =
+ pixels[0,n-1] = 1's pixels[n,PPW-1] = 0's
+
+cfbstartpartial[], cfbendpartial[]
+ these are used as accelerators for doing putbits and masking out
+bits that are all contained between longword boudaries. the extra
+256 bytes of data seems a small price to pay -- code is smaller,
+and narrow things (e.g. window borders) go faster.
+
+the names may seem misleading; they are derived not from which end
+of the word the bits are turned on, but at which end of a scanline
+the table tends to be used.
+
+look at the tables and macros to understand boundary conditions.
+(careful readers will note that starttab[n] = ~endtab[n] for n != 0)
+
+-----------------------------------------------------------------------
+these two macros depend on the screen's bit ordering.
+in both of them x is a screen position. they are used to
+combine bits collected from multiple longwords into a
+single destination longword, and to unpack a single
+source longword into multiple destinations.
+
+SCRLEFT(dst, x)
+ takes dst[x, PPW] and moves them to dst[0, PPW-x]
+ the contents of the rest of dst are 0 ONLY IF
+ dst is UNSIGNED.
+ is cast as an unsigned.
+ this is a right shift on the VAX, left shift on
+ Sun and pc-rt.
+
+SCRRIGHT(dst, x)
+ takes dst[0,x] and moves them to dst[PPW-x, PPW]
+ the contents of the rest of dst are 0 ONLY IF
+ dst is UNSIGNED.
+ this is a left shift on the VAX, right shift on
+ Sun and pc-rt.
+
+
+the remaining macros are cpu-independent; all bit order dependencies
+are built into the tables and the two macros above.
+
+maskbits(x, w, startmask, endmask, nlw)
+ for a span of width w starting at position x, returns
+a mask for ragged pixels at start, mask for ragged pixels at end,
+and the number of whole longwords between the ends.
+
+maskpartialbits(x, w, mask)
+ works like maskbits(), except all the pixels are in the
+ same longword (i.e. (x&0xPIM + w) <= PPW)
+
+mask32bits(x, w, startmask, endmask, nlw)
+ as maskbits, but does not calculate nlw. it is used by
+ cfbGlyphBlt to put down glyphs <= PPW bits wide.
+
+getbits(psrc, x, w, dst)
+ starting at position x in psrc (x < PPW), collect w
+ pixels and put them in the screen left portion of dst.
+ psrc is a longword pointer. this may span longword boundaries.
+ it special-cases fetching all w bits from one longword.
+
+ +--------+--------+ +--------+
+ | | m |n| | ==> | m |n| |
+ +--------+--------+ +--------+
+ x x+w 0 w
+ psrc psrc+1 dst
+ m = PPW - x
+ n = w - m
+
+ implementation:
+ get m pixels, move to screen-left of dst, zeroing rest of dst;
+ get n pixels from next word, move screen-right by m, zeroing
+ lower m pixels of word.
+ OR the two things together.
+
+putbits(src, x, w, pdst, planemask)
+ starting at position x in pdst, put down the screen-leftmost
+ w bits of src. pdst is a longword pointer. this may
+ span longword boundaries.
+ it special-cases putting all w bits into the same longword.
+
+ +--------+ +--------+--------+
+ | m |n| | ==> | | m |n| |
+ +--------+ +--------+--------+
+ 0 w x x+w
+ dst pdst pdst+1
+ m = PPW - x
+ n = w - m
+
+ implementation:
+ get m pixels, shift screen-right by x, zero screen-leftmost x
+ pixels; zero rightmost m bits of *pdst and OR in stuff
+ from before the semicolon.
+ shift src screen-left by m, zero bits n-32;
+ zero leftmost n pixels of *(pdst+1) and OR in the
+ stuff from before the semicolon.
+
+putbitsrop(src, x, w, pdst, planemask, ROP)
+ like putbits but calls DoRop with the rasterop ROP (see cfb.h for
+ DoRop)
+
+getleftbits(psrc, w, dst)
+ get the leftmost w (w<=PPW) bits from *psrc and put them
+ in dst. this is used by the cfbGlyphBlt code for glyphs
+ <=PPW bits wide.
+*/
+
+#if (BITMAP_BIT_ORDER == MSBFirst)
+#define BitRight(lw,n) ((lw) >> (n))
+#define BitLeft(lw,n) ((lw) << (n))
+#else /* (BITMAP_BIT_ORDER == LSBFirst) */
+#define BitRight(lw,n) ((lw) << (n))
+#define BitLeft(lw,n) ((lw) >> (n))
+#endif /* (BITMAP_BIT_ORDER == MSBFirst) */
+
+#define SCRLEFT(lw, n) BitLeft (lw, (n) * PSZ)
+#define SCRRIGHT(lw, n) BitRight(lw, (n) * PSZ)
+
+/*
+ * Note that the shift direction is independent of the byte ordering of the
+ * machine. The following is portable code.
+ */
+#if PPW == 16
+#define PFILL(p) ( ((p)&PMSK) | \
+ ((p)&PMSK) << PSZ | \
+ ((p)&PMSK) << 2*PSZ | \
+ ((p)&PMSK) << 3*PSZ | \
+ ((p)&PMSK) << 4*PSZ | \
+ ((p)&PMSK) << 5*PSZ | \
+ ((p)&PMSK) << 6*PSZ | \
+ ((p)&PMSK) << 7*PSZ | \
+ ((p)&PMSK) << 8*PSZ | \
+ ((p)&PMSK) << 9*PSZ | \
+ ((p)&PMSK) << 10*PSZ | \
+ ((p)&PMSK) << 11*PSZ | \
+ ((p)&PMSK) << 12*PSZ | \
+ ((p)&PMSK) << 13*PSZ | \
+ ((p)&PMSK) << 14*PSZ | \
+ ((p)&PMSK) << 15*PSZ )
+#define PFILL2(p, pf) { \
+ pf = (p) & PMSK; \
+ pf |= (pf << PSZ); \
+ pf |= (pf << 2*PSZ); \
+ pf |= (pf << 4*PSZ); \
+ pf |= (pf << 8*PSZ); \
+}
+#endif /* PPW == 16 */
+#if PPW == 8
+#define PFILL(p) ( ((p)&PMSK) | \
+ ((p)&PMSK) << PSZ | \
+ ((p)&PMSK) << 2*PSZ | \
+ ((p)&PMSK) << 3*PSZ | \
+ ((p)&PMSK) << 4*PSZ | \
+ ((p)&PMSK) << 5*PSZ | \
+ ((p)&PMSK) << 6*PSZ | \
+ ((p)&PMSK) << 7*PSZ )
+#define PFILL2(p, pf) { \
+ pf = (p) & PMSK; \
+ pf |= (pf << PSZ); \
+ pf |= (pf << 2*PSZ); \
+ pf |= (pf << 4*PSZ); \
+}
+#endif
+#if PPW == 4
+#define PFILL(p) ( ((p)&PMSK) | \
+ ((p)&PMSK) << PSZ | \
+ ((p)&PMSK) << 2*PSZ | \
+ ((p)&PMSK) << 3*PSZ )
+#define PFILL2(p, pf) { \
+ pf = (p) & PMSK; \
+ pf |= (pf << PSZ); \
+ pf |= (pf << 2*PSZ); \
+}
+#endif
+#if PPW == 2
+#define PFILL(p) ( ((p)&PMSK) | \
+ ((p)&PMSK) << PSZ )
+#define PFILL2(p, pf) { \
+ pf = (p) & PMSK; \
+ pf |= (pf << PSZ); \
+}
+#endif
+#if PPW == 1
+#define PFILL(p) (p)
+#define PFILL2(p,pf) (pf = (p))
+#endif
+
+/*
+ * Reduced raster op - using precomputed values, perform the above
+ * in three instructions
+ */
+
+#define DoRRop(dst, and, xor) (((dst) & (and)) ^ (xor))
+
+#define DoMaskRRop(dst, and, xor, mask) \
+ (((dst) & ((and) | ~(mask))) ^ (xor & mask))
+
+#if PSZ != 32 || PPW != 1
+
+# if (PSZ == 24 && PPW == 1)
+#define maskbits(x, w, startmask, endmask, nlw) {\
+ startmask = cfbstarttab[(x)&3]; \
+ endmask = cfbendtab[((x)+(w)) & 3]; \
+ nlw = ((((x)+(w))*3)>>2) - (((x)*3 +3)>>2); \
+}
+
+#define mask32bits(x, w, startmask, endmask) \
+ startmask = cfbstarttab[(x)&3]; \
+ endmask = cfbendtab[((x)+(w)) & 3];
+
+#define maskpartialbits(x, w, mask) \
+ mask = cfbstartpartial[(x) & 3] & cfbendpartial[((x)+(w)) & 3];
+
+#define maskbits24(x, w, startmask, endmask, nlw) \
+ startmask = cfbstarttab24[(x) & 3]; \
+ endmask = cfbendtab24[((x)+(w)) & 3]; \
+ if (startmask){ \
+ nlw = (((w) - (4 - ((x) & 3))) >> 2); \
+ } else { \
+ nlw = (w) >> 2; \
+ }
+
+#define getbits24(psrc, dst, index) {\
+ register int idx; \
+ switch(idx = ((index)&3)<<1){ \
+ case 0: \
+ dst = (*(psrc) &cfbmask[idx]); \
+ break; \
+ case 6: \
+ dst = BitLeft((*(psrc) &cfbmask[idx]), cfb24Shift[idx]); \
+ break; \
+ default: \
+ dst = BitLeft((*(psrc) &cfbmask[idx]), cfb24Shift[idx]) | \
+ BitRight(((*((psrc)+1)) &cfbmask[idx+1]), cfb24Shift[idx+1]); \
+ }; \
+}
+
+#define putbits24(src, x, w, pdst, planemask, index) {\
+ register PixelGroup dstpixel; \
+ register unsigned int idx; \
+ switch(idx = ((index)&3)<<1){ \
+ case 0: \
+ dstpixel = (*(pdst) &cfbmask[idx]); \
+ break; \
+ case 6: \
+ dstpixel = BitLeft((*(pdst) &cfbmask[idx]), cfb24Shift[idx]); \
+ break; \
+ default: \
+ dstpixel = BitLeft((*(pdst) &cfbmask[idx]), cfb24Shift[idx])| \
+ BitRight(((*((pdst)+1)) &cfbmask[idx+1]), cfb24Shift[idx+1]); \
+ }; \
+ dstpixel &= ~(planemask); \
+ dstpixel |= (src & planemask); \
+ *(pdst) &= cfbrmask[idx]; \
+ switch(idx){ \
+ case 0: \
+ *(pdst) |= (dstpixel & cfbmask[idx]); \
+ break; \
+ case 2: \
+ case 4: \
+ pdst++;idx++; \
+ *(pdst) = ((*(pdst)) & cfbrmask[idx]) | \
+ (BitLeft(dstpixel, cfb24Shift[idx]) & cfbmask[idx]); \
+ pdst--;idx--; \
+ case 6: \
+ *(pdst) |= (BitRight(dstpixel, cfb24Shift[idx]) & cfbmask[idx]); \
+ break; \
+ }; \
+}
+
+#define putbitsrop24(src, x, pdst, planemask, rop) \
+{ \
+ register PixelGroup t1, dstpixel; \
+ register unsigned int idx; \
+ switch(idx = (x)<<1){ \
+ case 0: \
+ dstpixel = (*(pdst) &cfbmask[idx]); \
+ break; \
+ case 6: \
+ dstpixel = BitLeft((*(pdst) &cfbmask[idx]), cfb24Shift[idx]); \
+ break; \
+ default: \
+ dstpixel = BitLeft((*(pdst) &cfbmask[idx]), cfb24Shift[idx])| \
+ BitRight(((*((pdst)+1)) &cfbmask[idx+1]), cfb24Shift[idx+1]); \
+ }; \
+ DoRop(t1, rop, (src), dstpixel); \
+ dstpixel &= ~planemask; \
+ dstpixel |= (t1 & planemask); \
+ *(pdst) &= cfbrmask[idx]; \
+ switch(idx){ \
+ case 0: \
+ *(pdst) |= (dstpixel & cfbmask[idx]); \
+ break; \
+ case 2: \
+ case 4: \
+ *((pdst)+1) = ((*((pdst)+1)) & cfbrmask[idx+1]) | \
+ (BitLeft(dstpixel, cfb24Shift[idx+1]) & (cfbmask[idx+1])); \
+ case 6: \
+ *(pdst) |= (BitRight(dstpixel, cfb24Shift[idx]) & cfbmask[idx]); \
+ }; \
+}
+# else /* PSZ == 24 && PPW == 1 */
+#define maskbits(x, w, startmask, endmask, nlw) \
+ startmask = cfbstarttab[(x)&PIM]; \
+ endmask = cfbendtab[((x)+(w)) & PIM]; \
+ if (startmask) \
+ nlw = (((w) - (PPW - ((x)&PIM))) >> PWSH); \
+ else \
+ nlw = (w) >> PWSH;
+
+#define maskpartialbits(x, w, mask) \
+ mask = cfbstartpartial[(x) & PIM] & cfbendpartial[((x) + (w)) & PIM];
+
+#define mask32bits(x, w, startmask, endmask) \
+ startmask = cfbstarttab[(x)&PIM]; \
+ endmask = cfbendtab[((x)+(w)) & PIM];
+
+/* FIXME */
+#define maskbits24(x, w, startmask, endmask, nlw) \
+ abort()
+#define getbits24(psrc, dst, index) \
+ abort()
+#define putbits24(src, x, w, pdst, planemask, index) \
+ abort()
+#define putbitsrop24(src, x, pdst, planemask, rop) \
+ abort()
+
+#endif /* PSZ == 24 && PPW == 1 */
+
+#define getbits(psrc, x, w, dst) \
+if ( ((x) + (w)) <= PPW) \
+{ \
+ dst = SCRLEFT(*(psrc), (x)); \
+} \
+else \
+{ \
+ int m; \
+ m = PPW-(x); \
+ dst = (SCRLEFT(*(psrc), (x)) & cfbendtab[m]) | \
+ (SCRRIGHT(*((psrc)+1), m) & cfbstarttab[m]); \
+}
+
+
+#define putbits(src, x, w, pdst, planemask) \
+if ( ((x)+(w)) <= PPW) \
+{ \
+ PixelGroup tmpmask; \
+ maskpartialbits((x), (w), tmpmask); \
+ tmpmask &= PFILL(planemask); \
+ *(pdst) = (*(pdst) & ~tmpmask) | (SCRRIGHT(src, x) & tmpmask); \
+} \
+else \
+{ \
+ unsigned long m; \
+ unsigned long n; \
+ PixelGroup pm = PFILL(planemask); \
+ m = PPW-(x); \
+ n = (w) - m; \
+ *(pdst) = (*(pdst) & (cfbendtab[x] | ~pm)) | \
+ (SCRRIGHT(src, x) & (cfbstarttab[x] & pm)); \
+ *((pdst)+1) = (*((pdst)+1) & (cfbstarttab[n] | ~pm)) | \
+ (SCRLEFT(src, m) & (cfbendtab[n] & pm)); \
+}
+#if defined(__GNUC__) && defined(mc68020)
+#undef getbits
+#define FASTGETBITS(psrc, x, w, dst) \
+ asm ("bfextu %3{%1:%2},%0" \
+ : "=d" (dst) : "di" (x), "di" (w), "o" (*(char *)(psrc)))
+
+#define getbits(psrc,x,w,dst) \
+{ \
+ FASTGETBITS(psrc, (x) * PSZ, (w) * PSZ, dst); \
+ dst = SCRLEFT(dst,PPW-(w)); \
+}
+
+#define FASTPUTBITS(src, x, w, pdst) \
+ asm ("bfins %3,%0{%1:%2}" \
+ : "=o" (*(char *)(pdst)) \
+ : "di" (x), "di" (w), "d" (src), "0" (*(char *) (pdst)))
+
+#undef putbits
+#define putbits(src, x, w, pdst, planemask) \
+{ \
+ if (planemask != PMSK) { \
+ PixelGroup _m, _pm; \
+ FASTGETBITS(pdst, (x) * PSZ , (w) * PSZ, _m); \
+ PFILL2(planemask, _pm); \
+ _m &= (~_pm); \
+ _m |= (SCRRIGHT(src, PPW-(w)) & _pm); \
+ FASTPUTBITS(_m, (x) * PSZ, (w) * PSZ, pdst); \
+ } else { \
+ FASTPUTBITS(SCRRIGHT(src, PPW-(w)), (x) * PSZ, (w) * PSZ, pdst); \
+ } \
+}
+
+
+#endif /* mc68020 */
+
+#define putbitsrop(src, x, w, pdst, planemask, rop) \
+if ( ((x)+(w)) <= PPW) \
+{ \
+ PixelGroup tmpmask; \
+ PixelGroup t1, t2; \
+ maskpartialbits((x), (w), tmpmask); \
+ PFILL2(planemask, t1); \
+ tmpmask &= t1; \
+ t1 = SCRRIGHT((src), (x)); \
+ DoRop(t2, rop, t1, *(pdst)); \
+ *(pdst) = (*(pdst) & ~tmpmask) | (t2 & tmpmask); \
+} \
+else \
+{ \
+ unsigned long m; \
+ unsigned long n; \
+ PixelGroup t1, t2; \
+ PixelGroup pm; \
+ PFILL2(planemask, pm); \
+ m = PPW-(x); \
+ n = (w) - m; \
+ t1 = SCRRIGHT((src), (x)); \
+ DoRop(t2, rop, t1, *(pdst)); \
+ *(pdst) = (*(pdst) & (cfbendtab[x] | ~pm)) | (t2 & (cfbstarttab[x] & pm));\
+ t1 = SCRLEFT((src), m); \
+ DoRop(t2, rop, t1, *((pdst) + 1)); \
+ *((pdst)+1) = (*((pdst)+1) & (cfbstarttab[n] | ~pm)) | \
+ (t2 & (cfbendtab[n] & pm)); \
+}
+
+#else /* PSZ == 32 && PPW == 1*/
+
+/*
+ * These macros can be optimized for 32-bit pixels since there is no
+ * need to worry about left/right edge masking. These macros were
+ * derived from the above using the following reductions:
+ *
+ * - x & PIW = 0 [since PIW = 0]
+ * - all masking tables are only indexed by 0 [ due to above ]
+ * - cfbstartab[0] and cfbendtab[0] = 0 [ no left/right edge masks]
+ * - cfbstartpartial[0] and cfbendpartial[0] = ~0 [no partial pixel mask]
+ *
+ * Macro reduction based upon constants cannot be performed automatically
+ * by the compiler since it does not know the contents of the masking
+ * arrays in cfbmskbits.c.
+ */
+#define maskbits(x, w, startmask, endmask, nlw) \
+ startmask = endmask = 0; \
+ nlw = (w);
+
+#define maskpartialbits(x, w, mask) \
+ mask = 0xFFFFFFFF;
+
+#define mask32bits(x, w, startmask, endmask) \
+ startmask = endmask = 0;
+
+/*
+ * For 32-bit operations, getbits(), putbits(), and putbitsrop()
+ * will only be invoked with x = 0 and w = PPW (1). The getbits()
+ * macro is only called within left/right edge logic, which doesn't
+ * happen for 32-bit pixels.
+ */
+#define getbits(psrc, x, w, dst) (dst) = *(psrc)
+
+#define putbits(src, x, w, pdst, planemask) \
+ *(pdst) = (*(pdst) & ~planemask) | (src & planemask);
+
+#define putbitsrop(src, x, w, pdst, planemask, rop) \
+{ \
+ PixelGroup t1; \
+ DoRop(t1, rop, (src), *(pdst)); \
+ *(pdst) = (*(pdst) & ~planemask) | (t1 & planemask); \
+}
+
+#endif /* PSZ != 32 */
+
+/*
+ * Use these macros only when you're using the MergeRop stuff
+ * in ../mfb/mergerop.h
+ */
+
+/* useful only when not spanning destination longwords */
+#if PSZ == 24
+#define putbitsmropshort24(src,x,w,pdst,index) {\
+ PixelGroup _tmpmask; \
+ PixelGroup _t1; \
+ maskpartialbits ((x), (w), _tmpmask); \
+ _t1 = SCRRIGHT((src), (x)); \
+ DoMaskMergeRop24(_t1, pdst, _tmpmask, index); \
+}
+#endif
+#define putbitsmropshort(src,x,w,pdst) {\
+ PixelGroup _tmpmask; \
+ PixelGroup _t1; \
+ maskpartialbits ((x), (w), _tmpmask); \
+ _t1 = SCRRIGHT((src), (x)); \
+ *pdst = DoMaskMergeRop(_t1, *pdst, _tmpmask); \
+}
+
+/* useful only when spanning destination longwords */
+#define putbitsmroplong(src,x,w,pdst) { \
+ PixelGroup _startmask, _endmask; \
+ int _m; \
+ PixelGroup _t1; \
+ _m = PPW - (x); \
+ _startmask = cfbstarttab[x]; \
+ _endmask = cfbendtab[(w) - _m]; \
+ _t1 = SCRRIGHT((src), (x)); \
+ pdst[0] = DoMaskMergeRop(_t1,pdst[0],_startmask); \
+ _t1 = SCRLEFT ((src),_m); \
+ pdst[1] = DoMaskMergeRop(_t1,pdst[1],_endmask); \
+}
+
+#define putbitsmrop(src,x,w,pdst) \
+if ((x) + (w) <= PPW) {\
+ putbitsmropshort(src,x,w,pdst); \
+} else { \
+ putbitsmroplong(src,x,w,pdst); \
+}
+
+#if GETLEFTBITS_ALIGNMENT == 1
+#define getleftbits(psrc, w, dst) dst = *((unsigned int *) psrc)
+#define getleftbits24(psrc, w, dst, idx){ \
+ regiseter int index; \
+ switch(index = ((idx)&3)<<1){ \
+ case 0: \
+ dst = (*((unsigned int *) psrc))&cfbmask[index]; \
+ break; \
+ case 2: \
+ case 4: \
+ dst = BitLeft(((*((unsigned int *) psrc))&cfbmask[index]), cfb24Shift[index]); \
+ dst |= BitRight(((*((unsigned int *) psrc)+1)&cfbmask[index]), cfb4Shift[index]); \
+ break; \
+ case 6: \
+ dst = BitLeft((*((unsigned int *) psrc)),cfb24Shift[index]); \
+ break; \
+ }; \
+}
+#endif /* GETLEFTBITS_ALIGNMENT == 1 */
+
+#define getglyphbits(psrc, x, w, dst) \
+{ \
+ dst = BitLeft((unsigned) *(psrc), (x)); \
+ if ( ((x) + (w)) > 32) \
+ dst |= (BitRight((unsigned) *((psrc)+1), 32-(x))); \
+}
+#if GETLEFTBITS_ALIGNMENT == 2
+#define getleftbits(psrc, w, dst) \
+ { \
+ if ( ((int)(psrc)) & 0x01 ) \
+ getglyphbits( ((unsigned int *)(((char *)(psrc))-1)), 8, (w), (dst) ); \
+ else \
+ dst = *((unsigned int *) psrc); \
+ }
+#endif /* GETLEFTBITS_ALIGNMENT == 2 */
+
+#if GETLEFTBITS_ALIGNMENT == 4
+#define getleftbits(psrc, w, dst) \
+ { \
+ int off, off_b; \
+ off_b = (off = ( ((int)(psrc)) & 0x03)) << 3; \
+ getglyphbits( \
+ (unsigned int *)( ((char *)(psrc)) - off), \
+ (off_b), (w), (dst) \
+ ); \
+ }
+#endif /* GETLEFTBITS_ALIGNMENT == 4 */
+
+/*
+ * getstipplepixels( psrcstip, x, w, ones, psrcpix, destpix )
+ *
+ * Converts bits to pixels in a reasonable way. Takes w (1 <= w <= PPW)
+ * bits from *psrcstip, starting at bit x; call this a quartet of bits.
+ * Then, takes the pixels from *psrcpix corresponding to the one-bits (if
+ * ones is TRUE) or the zero-bits (if ones is FALSE) of the quartet
+ * and puts these pixels into destpix.
+ *
+ * Example:
+ *
+ * getstipplepixels( &(0x08192A3B), 17, 4, 1, &(0x4C5D6E7F), dest )
+ *
+ * 0x08192A3B = 0000 1000 0001 1001 0010 1010 0011 1011
+ *
+ * This will take 4 bits starting at bit 17, so the quartet is 0x5 = 0101.
+ * It will take pixels from 0x4C5D6E7F corresponding to the one-bits in this
+ * quartet, so dest = 0x005D007F.
+ *
+ * XXX Works with both byte order.
+ * XXX This works for all values of x and w within a doubleword.
+ */
+#if (BITMAP_BIT_ORDER == MSBFirst)
+#define getstipplepixels( psrcstip, x, w, ones, psrcpix, destpix ) \
+{ \
+ PixelGroup q; \
+ int m; \
+ if ((m = ((x) - ((PPW*PSZ)-PPW))) > 0) { \
+ q = (*(psrcstip)) << m; \
+ if ( (x)+(w) > (PPW*PSZ) ) \
+ q |= *((psrcstip)+1) >> ((PPW*PSZ)-m); \
+ } \
+ else \
+ q = (*(psrcstip)) >> -m; \
+ q = QuartetBitsTable[(w)] & ((ones) ? q : ~q); \
+ *(destpix) = (*(psrcpix)) & QuartetPixelMaskTable[q]; \
+}
+#else /* BITMAP_BIT_ORDER == LSB */
+
+/*================================================================
+ BEGIN ORL VNC modification
+ Only use ldq_u on XFREE86 platforms */
+
+#ifdef XFREE86
+#define getstipplepixels( psrcstip, xt, w, ones, psrcpix, destpix ) \
+{ \
+ PixelGroup q; \
+ q = ldq_u(psrcstip) >> (xt); \
+ if ( ((xt)+(w)) > (PPW*PSZ) ) \
+ q |= (ldq_u((psrcstip)+1)) << ((PPW*PSZ)-(xt)); \
+ q = QuartetBitsTable[(w)] & ((ones) ? q : ~q); \
+ *(destpix) = (*(psrcpix)) & QuartetPixelMaskTable[q]; \
+}
+#else /* XFREE86 */
+#define getstipplepixels( psrcstip, xt, w, ones, psrcpix, destpix ) \
+{ \
+ PixelGroup q; \
+ q = *(psrcstip) >> (xt); \
+ if ( ((xt)+(w)) > (PPW*PSZ) ) \
+ q |= (*((psrcstip)+1)) << ((PPW*PSZ)-(xt)); \
+ q = QuartetBitsTable[(w)] & ((ones) ? q : ~q); \
+ *(destpix) = (*(psrcpix)) & QuartetPixelMaskTable[q]; \
+}
+#endif /* XFREE86 */
+
+/* END ORL VNC modification
+================================================================*/
+
+#if PSZ == 24
+# if 0
+#define getstipplepixels24( psrcstip,xt,w,ones,psrcpix,destpix,stipindex,srcindex,dstindex) \
+{ \
+ PixelGroup q, srcpix, srcstip; \
+ unsigned long src; \
+ register unsigned int sidx; \
+ register unsigned int didx; \
+ register unsigned int stipidx; \
+ sidx = ((srcindex) & 3)<<1; \
+ didx = ((dstindex) & 3)<<1; \
+ q = *(psrcstip) >> (xt); \
+/* if((srcindex)!=0)*/ \
+/* src = (((*(psrcpix)) << cfb24Shift[sidx]) & (cfbmask[sidx])) |*/ \
+/* (((*((psrcpix)+1)) << cfb24Shift[sidx+1]) & (cfbmask[sidx+1])); */\
+/* else */\
+ src = (*(psrcpix))&0xFFFFFF; \
+ if ( ((xt)+(w)) > PGSZ ) \
+ q |= (*((psrcstip)+1)) << (PGSZ -(xt)); \
+ q = QuartetBitsTable[(w)] & ((ones) ? q : ~q); \
+ src &= QuartetPixelMaskTable[q]; \
+ *(destpix) &= cfbrmask[didx]; \
+ switch(didx) {\
+ case 0: \
+ *(destpix) |= (src &cfbmask[didx]); \
+ break; \
+ case 2: \
+ case 4: \
+ destpix++;didx++; \
+ *(destpix) = ((*(destpix)) & (cfbrmask[didx]))| \
+ (BitLeft(src, cfb24Shift[didx]) & (cfbmask[didx])); \
+ destpix--; didx--;\
+ case 6: \
+ *(destpix) |= (BitRight(src, cfb24Shift[didx]) & cfbmask[didx]); \
+ break; \
+ }; \
+}
+# else
+#define getstipplepixels24(psrcstip,xt,ones,psrcpix,destpix,stipindex) \
+{ \
+ PixelGroup q, srcpix, srcstip; \
+ unsigned long src; \
+ register unsigned int stipidx; \
+ q = *(psrcstip) >> (xt); \
+ q = ((ones) ? q : ~q) & 1; \
+ *(destpix) = (*(psrcpix)) & QuartetPixelMaskTable[q]; \
+}
+# endif
+#endif /* PSZ == 24 */
+#endif
+
+extern PixelGroup cfbstarttab[];
+extern PixelGroup cfbendtab[];
+extern PixelGroup cfbstartpartial[];
+extern PixelGroup cfbendpartial[];
+extern PixelGroup cfbrmask[];
+extern PixelGroup cfbmask[];
+extern PixelGroup QuartetBitsTable[];
+extern PixelGroup QuartetPixelMaskTable[];
+#if PSZ == 24
+extern int cfb24Shift[];
+#endif
projects / rdpsrv / blobdiff