692 lines
21 KiB
C
692 lines
21 KiB
C
/* $XFree86: xc/programs/Xserver/mfb/maskbits.h,v 3.8tsi Exp $ */
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/* Combined Purdue/PurduePlus patches, level 2.1, 1/24/89 */
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/***********************************************************
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/* $Xorg: maskbits.h,v 1.3 2000/08/17 19:53:34 cpqbld Exp $ */
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include <X11/Xmd.h>
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#include "servermd.h"
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/* the following notes use the following conventions:
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SCREEN LEFT SCREEN RIGHT
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in this file and maskbits.c, left and right refer to screen coordinates,
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NOT bit numbering in registers.
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starttab[n]
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bits[0,n-1] = 0 bits[n,PLST] = 1
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endtab[n] =
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bits[0,n-1] = 1 bits[n,PLST] = 0
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startpartial[], endpartial[]
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these are used as accelerators for doing putbits and masking out
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bits that are all contained between longword boudaries. the extra
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256 bytes of data seems a small price to pay -- code is smaller,
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and narrow things (e.g. window borders) go faster.
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the names may seem misleading; they are derived not from which end
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of the word the bits are turned on, but at which end of a scanline
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the table tends to be used.
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look at the tables and macros to understand boundary conditions.
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(careful readers will note that starttab[n] = ~endtab[n] for n != 0)
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-----------------------------------------------------------------------
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these two macros depend on the screen's bit ordering.
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in both of them x is a screen position. they are used to
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combine bits collected from multiple longwords into a
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single destination longword, and to unpack a single
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source longword into multiple destinations.
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SCRLEFT(dst, x)
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takes dst[x, PPW] and moves them to dst[0, PPW-x]
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the contents of the rest of dst are 0.
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this is a right shift on LSBFirst (forward-thinking)
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machines like the VAX, and left shift on MSBFirst
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(backwards) machines like the 680x0 and pc/rt.
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SCRRIGHT(dst, x)
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takes dst[0,x] and moves them to dst[PPW-x, PPW]
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the contents of the rest of dst are 0.
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this is a left shift on LSBFirst, right shift
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on MSBFirst.
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the remaining macros are cpu-independent; all bit order dependencies
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are built into the tables and the two macros above.
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maskbits(x, w, startmask, endmask, nlw)
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for a span of width w starting at position x, returns
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a mask for ragged bits at start, mask for ragged bits at end,
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and the number of whole longwords between the ends.
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maskpartialbits(x, w, mask)
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works like maskbits(), except all the bits are in the
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same longword (i.e. (x&PIM + w) <= PPW)
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maskPPWbits(x, w, startmask, endmask, nlw)
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as maskbits, but does not calculate nlw. it is used by
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mfbGlyphBlt to put down glyphs <= PPW bits wide.
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-------------------------------------------------------------------
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NOTE
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any pointers passed to the following 4 macros are
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guranteed to be PPW-bit aligned.
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The only non-PPW-bit-aligned references ever made are
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to font glyphs, and those are made with getleftbits()
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and getshiftedleftbits (qq.v.)
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For 64-bit server, it is assumed that we will never have font padding
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of more than 4 bytes. The code uses int's to access the fonts
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intead of longs.
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getbits(psrc, x, w, dst)
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starting at position x in psrc (x < PPW), collect w
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bits and put them in the screen left portion of dst.
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psrc is a longword pointer. this may span longword boundaries.
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it special-cases fetching all w bits from one longword.
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+--------+--------+ +--------+
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| | m |n| | ==> | m |n| |
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+--------+--------+ +--------+
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x x+w 0 w
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psrc psrc+1 dst
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m = PPW - x
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n = w - m
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implementation:
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get m bits, move to screen-left of dst, zeroing rest of dst;
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get n bits from next word, move screen-right by m, zeroing
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lower m bits of word.
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OR the two things together.
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putbits(src, x, w, pdst)
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starting at position x in pdst, put down the screen-leftmost
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w bits of src. pdst is a longword pointer. this may
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span longword boundaries.
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it special-cases putting all w bits into the same longword.
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+--------+ +--------+--------+
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| m |n| | ==> | | m |n| |
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+--------+ +--------+--------+
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0 w x x+w
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dst pdst pdst+1
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m = PPW - x
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n = w - m
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implementation:
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get m bits, shift screen-right by x, zero screen-leftmost x
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bits; zero rightmost m bits of *pdst and OR in stuff
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from before the semicolon.
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shift src screen-left by m, zero bits n-PPW;
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zero leftmost n bits of *(pdst+1) and OR in the
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stuff from before the semicolon.
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putbitsrop(src, x, w, pdst, ROP)
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like putbits but calls DoRop with the rasterop ROP (see mfb.h for
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DoRop)
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putbitsrrop(src, x, w, pdst, ROP)
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like putbits but calls DoRRop with the reduced rasterop ROP
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(see mfb.h for DoRRop)
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-----------------------------------------------------------------------
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The two macros below are used only for getting bits from glyphs
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in fonts, and glyphs in fonts are gotten only with the following two
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mcros.
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You should tune these macros toyour font format and cpu
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byte ordering.
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NOTE
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getleftbits(psrc, w, dst)
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get the leftmost w (w<=32) bits from *psrc and put them
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in dst. this is used by the mfbGlyphBlt code for glyphs
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<=PPW bits wide.
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psrc is declared (unsigned char *)
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psrc is NOT guaranteed to be PPW-bit aligned. on many
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machines this will cause problems, so there are several
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versions of this macro.
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this macro is called ONLY for getting bits from font glyphs,
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and depends on the server-natural font padding.
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for blazing text performance, you want this macro
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to touch memory as infrequently as possible (e.g.
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fetch longwords) and as efficiently as possible
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(e.g. don't fetch misaligned longwords)
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getshiftedleftbits(psrc, offset, w, dst)
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used by the font code; like getleftbits, but shifts the
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bits SCRLEFT by offset.
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this is implemented portably, calling getleftbits()
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and SCRLEFT().
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psrc is declared (unsigned char *).
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*/
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/* to match CFB and allow algorithm sharing ...
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* name mfb32 mfb64 explanation
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* ---- ------ ----- -----------
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* PGSZ 32 64 pixel group size (in bits; same as PPW for mfb)
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* PGSZB 4 8 pixel group size (in bytes)
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* PPW 32 64 pixels per word (pixels per pixel group)
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* PLST 31 63 index of last pixel in a word (should be PPW-1)
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* PIM 0x1f 0x3f pixel index mask (index within a pixel group)
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* PWSH 5 6 pixel-to-word shift (should be log2(PPW))
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*
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* The MFB_ versions are here so that cfb can include maskbits.h to get
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* the bitmap constants without conflicting with its own P* constants.
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*
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* Keith Packard (keithp@suse.com):
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* Note mfb64 is no longer supported; it requires DIX support
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* for realigning images which costs too much
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*/
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/* warning: PixelType definition duplicated in mfb.h */
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#ifndef PixelType
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#define PixelType CARD32
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#endif /* PixelType */
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#ifndef MfbBits
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#define MfbBits CARD32
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#endif
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#define MFB_PGSZB 4
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#define MFB_PPW (MFB_PGSZB<<3) /* assuming 8 bits per byte */
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#define MFB_PGSZ MFB_PPW
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#define MFB_PLST (MFB_PPW-1)
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#define MFB_PIM MFB_PLST
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/* set PWSH = log2(PPW) using brute force */
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#if MFB_PPW == 32
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#define MFB_PWSH 5
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#endif /* MFB_PPW == 32 */
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/* XXX don't use these five */
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extern PixelType starttab[];
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extern PixelType endtab[];
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extern PixelType partmasks[MFB_PPW][MFB_PPW];
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extern PixelType rmask[];
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extern PixelType mask[];
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/* XXX use these five */
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extern PixelType mfbGetstarttab(int);
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extern PixelType mfbGetendtab(int);
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extern PixelType mfbGetpartmasks(int, int);
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extern PixelType mfbGetrmask(int);
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extern PixelType mfbGetmask(int);
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#ifndef MFB_CONSTS_ONLY
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#define PGSZB MFB_PGSZB
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#define PPW MFB_PPW
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#define PGSZ MFB_PGSZ
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#define PLST MFB_PLST
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#define PIM MFB_PIM
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#define PWSH MFB_PWSH
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#define BitLeft(b,s) SCRLEFT(b,s)
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#define BitRight(b,s) SCRRIGHT(b,s)
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#ifdef XFree86Server
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#define LONG2CHARSSAMEORDER(x) ((MfbBits)(x))
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#define LONG2CHARSDIFFORDER( x ) ( ( ( ( x ) & (MfbBits)0x000000FF ) << 0x18 ) \
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| ( ( ( x ) & (MfbBits)0x0000FF00 ) << 0x08 ) \
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| ( ( ( x ) & (MfbBits)0x00FF0000 ) >> 0x08 ) \
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| ( ( ( x ) & (MfbBits)0xFF000000 ) >> 0x18 ) )
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#endif /* XFree86Server */
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#if (BITMAP_BIT_ORDER == IMAGE_BYTE_ORDER)
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#define LONG2CHARS(x) ((MfbBits)(x))
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#else
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/*
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* the unsigned case below is for compilers like
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* the Danbury C and i386cc
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*/
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#define LONG2CHARS( x ) ( ( ( ( x ) & (MfbBits)0x000000FF ) << 0x18 ) \
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| ( ( ( x ) & (MfbBits)0x0000FF00 ) << 0x08 ) \
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| ( ( ( x ) & (MfbBits)0x00FF0000 ) >> 0x08 ) \
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| ( ( ( x ) & (MfbBits)0xFF000000 ) >> 0x18 ) )
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#endif /* BITMAP_BIT_ORDER */
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#ifdef STRICT_ANSI_SHIFT
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#define SHL(x,y) ((y) >= PPW ? 0 : LONG2CHARS(LONG2CHARS(x) << (y)))
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#define SHR(x,y) ((y) >= PPW ? 0 : LONG2CHARS(LONG2CHARS(x) >> (y)))
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#else
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#define SHL(x,y) LONG2CHARS(LONG2CHARS(x) << (y))
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#define SHR(x,y) LONG2CHARS(LONG2CHARS(x) >> (y))
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#endif
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#if (BITMAP_BIT_ORDER == MSBFirst) /* pc/rt, 680x0 */
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#define SCRLEFT(lw, n) SHL((PixelType)(lw),(n))
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#define SCRRIGHT(lw, n) SHR((PixelType)(lw),(n))
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#else /* vax, intel */
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#define SCRLEFT(lw, n) SHR((PixelType)(lw),(n))
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#define SCRRIGHT(lw, n) SHL((PixelType)(lw),(n))
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#endif
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#define DoRRop(alu, src, dst) \
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(((alu) == RROP_BLACK) ? ((dst) & ~(src)) : \
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((alu) == RROP_WHITE) ? ((dst) | (src)) : \
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((alu) == RROP_INVERT) ? ((dst) ^ (src)) : \
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(dst))
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/* A generalized form of a x4 Duff's Device */
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#define Duff(counter, block) { \
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while (counter >= 4) {\
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{ block; } \
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{ block; } \
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{ block; } \
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{ block; } \
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counter -= 4; \
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} \
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switch (counter & 3) { \
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case 3: { block; } \
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case 2: { block; } \
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case 1: { block; } \
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case 0: \
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counter = 0; \
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} \
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}
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#define maskbits(x, w, startmask, endmask, nlw) \
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startmask = mfbGetstarttab((x) & PIM); \
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endmask = mfbGetendtab(((x)+(w)) & PIM); \
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if (startmask) \
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nlw = (((w) - (PPW - ((x) & PIM))) >> PWSH); \
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else \
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nlw = (w) >> PWSH;
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#define maskpartialbits(x, w, mask) \
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mask = mfbGetpartmasks((x) & PIM, (w) & PIM);
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#define maskPPWbits(x, w, startmask, endmask) \
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startmask = mfbGetstarttab((x) & PIM); \
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endmask = mfbGetendtab(((x)+(w)) & PIM);
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#ifdef __GNUC__ /* XXX don't want for Alpha? */
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#ifdef vax
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#define FASTGETBITS(psrc,x,w,dst) \
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__asm ("extzv %1,%2,%3,%0" \
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: "=g" (dst) \
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: "g" (x), "g" (w), "m" (*(char *)(psrc)))
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#define getbits(psrc,x,w,dst) FASTGETBITS(psrc,x,w,dst)
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#define FASTPUTBITS(src, x, w, pdst) \
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__asm ("insv %3,%1,%2,%0" \
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: "=m" (*(char *)(pdst)) \
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: "g" (x), "g" (w), "g" (src))
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#define putbits(src, x, w, pdst) FASTPUTBITS(src, x, w, pdst)
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#endif /* vax */
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#ifdef mc68020
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#define FASTGETBITS(psrc, x, w, dst) \
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__asm ("bfextu %3{%1:%2},%0" \
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: "=d" (dst) : "di" (x), "di" (w), "o" (*(char *)(psrc)))
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#define getbits(psrc,x,w,dst) \
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{ \
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FASTGETBITS(psrc, x, w, dst);\
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dst = SHL(dst,(32-(w))); \
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}
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#define FASTPUTBITS(src, x, w, pdst) \
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__asm ("bfins %3,%0{%1:%2}" \
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: "=o" (*(char *)(pdst)) \
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: "di" (x), "di" (w), "d" (src), "0" (*(char *) (pdst)))
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#define putbits(src, x, w, pdst) FASTPUTBITS(SHR((src),32-(w)), x, w, pdst)
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#endif /* mc68020 */
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#endif /* __GNUC__ */
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/* The following flag is used to override a bugfix for sun 3/60+CG4 machines,
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*/
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/* We don't need to be careful about this unless we're dealing with sun3's
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* We will default its usage for those who do not know anything, but will
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* override its effect if the machine doesn't look like a sun3
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*/
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#if !defined(mc68020) || !defined(sun)
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#define NO_3_60_CG4
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#endif
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/* This is gross. We want to #define u_putbits as something which can be used
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* in the case of the 3/60+CG4, but if we use /bin/cc or are on another
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* machine type, we want nothing to do with u_putbits. What a hastle. Here
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* I used slo_putbits as something which either u_putbits or putbits could be
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* defined as.
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*
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* putbits gets it iff it is not already defined with FASTPUTBITS above.
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* u_putbits gets it if we have FASTPUTBITS (putbits) from above and have not
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* overridden the NO_3_60_CG4 flag.
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*/
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#define slo_putbits(src, x, w, pdst) \
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{ \
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register int n = (x)+(w)-PPW; \
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\
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if (n <= 0) \
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{ \
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register PixelType tmpmask; \
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maskpartialbits((x), (w), tmpmask); \
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*(pdst) = (*(pdst) & ~tmpmask) | \
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(SCRRIGHT(src, x) & tmpmask); \
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} \
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else \
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{ \
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register int d = PPW-(x); \
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*(pdst) = (*(pdst) & mfbGetendtab(x)) | (SCRRIGHT((src), x)); \
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(pdst)[1] = ((pdst)[1] & mfbGetstarttab(n)) | \
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(SCRLEFT(src, d) & mfbGetendtab(n)); \
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} \
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}
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#if defined(putbits) && !defined(NO_3_60_CG4)
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#define u_putbits(src, x, w, pdst) slo_putbits(src, x, w, pdst)
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#else
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#define u_putbits(src, x, w, pdst) putbits(src, x, w, pdst)
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#endif
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#if !defined(putbits)
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#define putbits(src, x, w, pdst) slo_putbits(src, x, w, pdst)
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#endif
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/* Now if we have not gotten any really good bitfield macros, try some
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* moderately fast macros. Alas, I don't know how to do asm instructions
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* without gcc.
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*/
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#ifndef getbits
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#define getbits(psrc, x, w, dst) \
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{ \
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dst = SCRLEFT(*(psrc), (x)); \
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if ( ((x) + (w)) > PPW) \
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dst |= (SCRRIGHT(*((psrc)+1), PPW-(x))); \
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}
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#endif
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/* We have to special-case putbitsrop because of 3/60+CG4 combos
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*/
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#define u_putbitsrop(src, x, w, pdst, rop) \
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{\
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register PixelType t1, t2; \
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register int n = (x)+(w)-PPW; \
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\
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t1 = SCRRIGHT((src), (x)); \
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DoRop(t2, rop, t1, *(pdst)); \
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\
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if (n <= 0) \
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{ \
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register PixelType tmpmask; \
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\
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maskpartialbits((x), (w), tmpmask); \
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*(pdst) = (*(pdst) & ~tmpmask) | (t2 & tmpmask); \
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} \
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else \
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{ \
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int m = PPW-(x); \
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*(pdst) = (*(pdst) & mfbGetendtab(x)) | (t2 & mfbGetstarttab(x)); \
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t1 = SCRLEFT((src), m); \
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DoRop(t2, rop, t1, (pdst)[1]); \
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(pdst)[1] = ((pdst)[1] & mfbGetstarttab(n)) | (t2 & mfbGetendtab(n)); \
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} \
|
|
}
|
|
|
|
/* If our getbits and putbits are FAST enough,
|
|
* do this brute force, it's faster
|
|
*/
|
|
|
|
#if defined(FASTPUTBITS) && defined(FASTGETBITS) && defined(NO_3_60_CG4)
|
|
#if (BITMAP_BIT_ORDER == MSBFirst)
|
|
#define putbitsrop(src, x, w, pdst, rop) \
|
|
{ \
|
|
register PixelType _tmp, _tmp2; \
|
|
FASTGETBITS(pdst, x, w, _tmp); \
|
|
_tmp2 = SCRRIGHT(src, PPW-(w)); \
|
|
DoRop(_tmp, rop, _tmp2, _tmp) \
|
|
FASTPUTBITS(_tmp, x, w, pdst); \
|
|
}
|
|
#define putbitsrrop(src, x, w, pdst, rop) \
|
|
{ \
|
|
register PixelType _tmp, _tmp2; \
|
|
\
|
|
FASTGETBITS(pdst, x, w, _tmp); \
|
|
_tmp2 = SCRRIGHT(src, PPW-(w)); \
|
|
_tmp= DoRRop(rop, _tmp2, _tmp); \
|
|
FASTPUTBITS(_tmp, x, w, pdst); \
|
|
}
|
|
#undef u_putbitsrop
|
|
#else
|
|
#define putbitsrop(src, x, w, pdst, rop) \
|
|
{ \
|
|
register PixelType _tmp; \
|
|
FASTGETBITS(pdst, x, w, _tmp); \
|
|
DoRop(_tmp, rop, src, _tmp) \
|
|
FASTPUTBITS(_tmp, x, w, pdst); \
|
|
}
|
|
#define putbitsrrop(src, x, w, pdst, rop) \
|
|
{ \
|
|
register PixelType _tmp; \
|
|
\
|
|
FASTGETBITS(pdst, x, w, _tmp); \
|
|
_tmp= DoRRop(rop, src, _tmp); \
|
|
FASTPUTBITS(_tmp, x, w, pdst); \
|
|
}
|
|
#undef u_putbitsrop
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef putbitsrop
|
|
#define putbitsrop(src, x, w, pdst, rop) u_putbitsrop(src, x, w, pdst, rop)
|
|
#endif
|
|
|
|
#ifndef putbitsrrop
|
|
#define putbitsrrop(src, x, w, pdst, rop) \
|
|
{\
|
|
register PixelType t1, t2; \
|
|
register int n = (x)+(w)-PPW; \
|
|
\
|
|
t1 = SCRRIGHT((src), (x)); \
|
|
t2 = DoRRop(rop, t1, *(pdst)); \
|
|
\
|
|
if (n <= 0) \
|
|
{ \
|
|
register PixelType tmpmask; \
|
|
\
|
|
maskpartialbits((x), (w), tmpmask); \
|
|
*(pdst) = (*(pdst) & ~tmpmask) | (t2 & tmpmask); \
|
|
} \
|
|
else \
|
|
{ \
|
|
int m = PPW-(x); \
|
|
*(pdst) = (*(pdst) & mfbGetendtab(x)) | (t2 & mfbGetstarttab(x)); \
|
|
t1 = SCRLEFT((src), m); \
|
|
t2 = DoRRop(rop, t1, (pdst)[1]); \
|
|
(pdst)[1] = ((pdst)[1] & mfbGetstarttab(n)) | (t2 & mfbGetendtab(n)); \
|
|
} \
|
|
}
|
|
#endif
|
|
|
|
#if GETLEFTBITS_ALIGNMENT == 1
|
|
#define getleftbits(psrc, w, dst) dst = *((CARD32 *)(pointer) psrc)
|
|
#endif /* GETLEFTBITS_ALIGNMENT == 1 */
|
|
|
|
#if GETLEFTBITS_ALIGNMENT == 2
|
|
#define getleftbits(psrc, w, dst) \
|
|
{ \
|
|
if ( ((int)(psrc)) & 0x01 ) \
|
|
getbits( ((CARD32 *)(((char *)(psrc))-1)), 8, (w), (dst) ); \
|
|
else \
|
|
getbits(psrc, 0, w, dst); \
|
|
}
|
|
#endif /* GETLEFTBITS_ALIGNMENT == 2 */
|
|
|
|
#if GETLEFTBITS_ALIGNMENT == 4
|
|
#define getleftbits(psrc, w, dst) \
|
|
{ \
|
|
int off, off_b; \
|
|
off_b = (off = ( ((int)(psrc)) & 0x03)) << 3; \
|
|
getbits( \
|
|
(CARD32 *)( ((char *)(psrc)) - off), \
|
|
(off_b), (w), (dst) \
|
|
); \
|
|
}
|
|
#endif /* GETLEFTBITS_ALIGNMENT == 4 */
|
|
|
|
|
|
#define getshiftedleftbits(psrc, offset, w, dst) \
|
|
getleftbits((psrc), (w), (dst)); \
|
|
dst = SCRLEFT((dst), (offset));
|
|
|
|
/* FASTGETBITS and FASTPUTBITS are not necessarily correct implementations of
|
|
* getbits and putbits, but they work if used together.
|
|
*
|
|
* On a MSBFirst machine, a cpu bitfield extract instruction (like bfextu)
|
|
* could normally assign its result to a 32-bit word register in the screen
|
|
* right position. This saves canceling register shifts by not fighting the
|
|
* natural cpu byte order.
|
|
*
|
|
* Unfortunately, these fail on a 3/60+CG4 and cannot be used unmodified. Sigh.
|
|
*/
|
|
#if defined(FASTGETBITS) && defined(FASTPUTBITS)
|
|
#ifdef NO_3_60_CG4
|
|
#define u_FASTPUT(aa, bb, cc, dd) FASTPUTBITS(aa, bb, cc, dd)
|
|
#else
|
|
#define u_FASTPUT(aa, bb, cc, dd) u_putbits(SCRLEFT(aa, PPW-(cc)), bb, cc, dd)
|
|
#endif
|
|
|
|
#define getandputbits(psrc, srcbit, dstbit, width, pdst) \
|
|
{ \
|
|
register PixelType _tmpbits; \
|
|
FASTGETBITS(psrc, srcbit, width, _tmpbits); \
|
|
u_FASTPUT(_tmpbits, dstbit, width, pdst); \
|
|
}
|
|
|
|
#define getandputrop(psrc, srcbit, dstbit, width, pdst, rop) \
|
|
{ \
|
|
register PixelType _tmpsrc, _tmpdst; \
|
|
FASTGETBITS(pdst, dstbit, width, _tmpdst); \
|
|
FASTGETBITS(psrc, srcbit, width, _tmpsrc); \
|
|
DoRop(_tmpdst, rop, _tmpsrc, _tmpdst); \
|
|
u_FASTPUT(_tmpdst, dstbit, width, pdst); \
|
|
}
|
|
|
|
#define getandputrrop(psrc, srcbit, dstbit, width, pdst, rop) \
|
|
{ \
|
|
register PixelType _tmpsrc, _tmpdst; \
|
|
FASTGETBITS(pdst, dstbit, width, _tmpdst); \
|
|
FASTGETBITS(psrc, srcbit, width, _tmpsrc); \
|
|
_tmpdst = DoRRop(rop, _tmpsrc, _tmpdst); \
|
|
u_FASTPUT(_tmpdst, dstbit, width, pdst); \
|
|
}
|
|
|
|
#define getandputbits0(psrc, srcbit, width, pdst) \
|
|
getandputbits(psrc, srcbit, 0, width, pdst)
|
|
|
|
#define getandputrop0(psrc, srcbit, width, pdst, rop) \
|
|
getandputrop(psrc, srcbit, 0, width, pdst, rop)
|
|
|
|
#define getandputrrop0(psrc, srcbit, width, pdst, rop) \
|
|
getandputrrop(psrc, srcbit, 0, width, pdst, rop)
|
|
|
|
|
|
#else /* Slow poke */
|
|
|
|
/* pairs of getbits/putbits happen frequently. Some of the code can
|
|
* be shared or avoided in a few specific instances. It gets us a
|
|
* small advantage, so we do it. The getandput...0 macros are the only ones
|
|
* which speed things here. The others are here for compatibility w/the above
|
|
* FAST ones
|
|
*/
|
|
|
|
#define getandputbits(psrc, srcbit, dstbit, width, pdst) \
|
|
{ \
|
|
register PixelType _tmpbits; \
|
|
getbits(psrc, srcbit, width, _tmpbits); \
|
|
putbits(_tmpbits, dstbit, width, pdst); \
|
|
}
|
|
|
|
#define getandputrop(psrc, srcbit, dstbit, width, pdst, rop) \
|
|
{ \
|
|
register PixelType _tmpbits; \
|
|
getbits(psrc, srcbit, width, _tmpbits) \
|
|
putbitsrop(_tmpbits, dstbit, width, pdst, rop) \
|
|
}
|
|
|
|
#define getandputrrop(psrc, srcbit, dstbit, width, pdst, rop) \
|
|
{ \
|
|
register PixelType _tmpbits; \
|
|
getbits(psrc, srcbit, width, _tmpbits) \
|
|
putbitsrrop(_tmpbits, dstbit, width, pdst, rop) \
|
|
}
|
|
|
|
|
|
#define getandputbits0(psrc, sbindex, width, pdst) \
|
|
{ /* unroll the whole damn thing to see how it * behaves */ \
|
|
register int _flag = PPW - (sbindex); \
|
|
register PixelType _src; \
|
|
\
|
|
_src = SCRLEFT (*(psrc), (sbindex)); \
|
|
if ((width) > _flag) \
|
|
_src |= SCRRIGHT (*((psrc) + 1), _flag); \
|
|
\
|
|
*(pdst) = (*(pdst) & mfbGetstarttab((width))) | (_src & mfbGetendtab((width))); \
|
|
}
|
|
|
|
|
|
#define getandputrop0(psrc, sbindex, width, pdst, rop) \
|
|
{ \
|
|
register int _flag = PPW - (sbindex); \
|
|
register PixelType _src; \
|
|
\
|
|
_src = SCRLEFT (*(psrc), (sbindex)); \
|
|
if ((width) > _flag) \
|
|
_src |= SCRRIGHT (*((psrc) + 1), _flag); \
|
|
DoRop(_src, rop, _src, *(pdst)); \
|
|
\
|
|
*(pdst) = (*(pdst) & mfbGetstarttab((width))) | (_src & mfbGetendtab((width))); \
|
|
}
|
|
|
|
#define getandputrrop0(psrc, sbindex, width, pdst, rop) \
|
|
{ \
|
|
int _flag = PPW - (sbindex); \
|
|
register PixelType _src; \
|
|
\
|
|
_src = SCRLEFT (*(psrc), (sbindex)); \
|
|
if ((width) > _flag) \
|
|
_src |= SCRRIGHT (*((psrc) + 1), _flag); \
|
|
_src = DoRRop(rop, _src, *(pdst)); \
|
|
\
|
|
*(pdst) = (*(pdst) & mfbGetstarttab((width))) | (_src & mfbGetendtab((width))); \
|
|
}
|
|
|
|
#endif /* FASTGETBITS && FASTPUTBITS */
|
|
|
|
#endif /* MFB_CONSTS_ONLY */
|