378 lines
15 KiB
Plaintext
378 lines
15 KiB
Plaintext
;
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; File: DrawingVars.a
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;
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; Copyright: © 1988-1992 by Apple Computer, Inc., all rights reserved.
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;
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; Change History (most recent first):
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;
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; <13> 6/10/92 SAH Brought back in saveStkLowPt local so that Stretch can save and
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; restore it properly, rather than munging it (along with most of
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; your stack) in low memory situations.
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; <12> 10/2/91 DTY Conditionalise last change for TheFuture.
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; <11> 10/1/91 KON Save and restore stklowPt (rather than just setting it to sp on
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; exit) in stretch. This fixes a bug where someone turns off the
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; stack sniffer and then calls stretch which turns it back on.
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; <10> 11/12/90 KON Move input rectangles to the very bottom of the stack frame so
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; they don't move other stack locations needed by ROM routines as
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; in ci class machines. [smc]
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; <9> 11/9/90 KON Add newSrcRect, newMaskRect, and newDstRect to Stretchbits stack
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; frame. [smc]
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; <8> 10/31/90 SMC Add stack frame labels used in fixes of alpha channel bugs.
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; <7> 8/26/90 KON Add stack frame variables for 32-bit clean pointers to color
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; table used by stretch.
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; <6> 8/2/90 gbm change TEMPRECT to TEMPRECTANGLE to avoid conflicts
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; <5> 7/20/90 gbm Change some identifiers to cease conflicting with interface
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; files
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; <4> 5/22/90 KON Add flag to stretch for mode translation and colorizing. Used
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; by stretch and passed to makeScaleTbl. Also added RGBFrColor
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; and RGBBgColor to stretch stackframe for colorizing at srcbuf.
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; <3> 5/1/90 KON Add srcMergeCase and MaskMergeCase variables for stretch.
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; <1+> 1/3/90 BAL Added variables (in place) for Indexed to Indexed dithering support.
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; <¥1.4> 7/14/89 BAL For Aurora: Final CQD
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; <1.3> 6/30/89 BAL Added some stack frame vars for future use
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; <¥1.2> 5/29/89 BAL Blasting in 32-Bit QuickDraw version 1.0 Final
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; <¥1.1> 4/12/89 BAL Blasting in 32-Bit QuickDraw 1.0B1
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; 1/8/89 BAL Made destPixOffset a long for bfextu in bTransparent
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; 11/5/88 BAL Added transfer direction (RUNBUMP) to SeekMask interface.
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; 10/3/88 BAL Moved DstRow into the interface for SeekMask; (DstRow<0) ->
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; seeking up. Reorganized variables to maintain long word
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; alignment through out.
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; 10/1/88 BAL Added RUNRTN, rtn to form n-bit run mask from 1-bit scan mask.
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; 9/22/88 BAL Moved MINRECT, STACKFREE, and DSTSHIFT up into interface to
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; SeekMask.
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; 9/21/88 BAL Added RUNBUF, pointer to run encoded blit mask.
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; 9/18/88 BAL Broken out from StretchBits, RgnBlt, BitBlt, SeekMask,
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; PatExpand, DrawArc, DrawLine, DrawSlab, ColorMap.
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;
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; To Do:
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;
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;EASE$$$ READ ONLY COPY of file Òdrawingvars.aÓ
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;¥1.4 BAL 07/14/1989 For Aurora: Final CQD
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; 1.3 BAL 06/30/1989 Added some stack frame vars for future use
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;¥1.2 BAL 05/29/1989 Blasting in 32-Bit QuickDraw version 1.0 Final
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;¥1.1 BAL 04/12/1989 Blasting in 32-Bit QuickDraw 1.0B1
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; File Drawing Vars.a
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;
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; Copyright Apple Computer, Inc. 1988
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; All Rights Reserved
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;
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;------------------------------------------------------------------
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;
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; MODIFICATIONS
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;
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; 18Sep88 BAL Broken out from StretchBits, RgnBlt, BitBlt, SeekMask, PatExpand,
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; DrawArc, DrawLine, DrawSlab, ColorMap.
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; 21Sep88 BAL Added RUNBUF, pointer to run encoded blit mask.
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; 22Sep88 BAL Moved MINRECT, STACKFREE, and DSTSHIFT up into interface to SeekMask.
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; 01Oct88 BAL Added RUNRTN, rtn to form n-bit run mask from 1-bit scan mask.
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; 03Oct88 BAL Moved DstRow into the interface for SeekMask; (DstRow<0) -> seeking up.
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; Reorganized variables to maintain long word alignment through out.
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; 05Nov88 BAL Added transfer direction (RUNBUMP) to SeekMask interface.
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; 08Jan89 BAL Made destPixOffset a long for bfextu in bTransparent
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;----------------------------------------------------
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;
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; STACKFRAME LINKED AND LOCALS INITIALIZED BY STRETCHBITS.
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;
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; A6 OFFSETS OF LOCAL VARIABLES AFTER LINK:
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;
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; STACK FRAME VARS USED BY SEEKMASK (CALLED BY STRETCHBITS, RGNBLT, DRAWARC, DRAWLINE)
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; (NOT USED IN PATEXPAND)
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RECTFLAG EQU -2 ;WORD
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VERT EQU RECTFLAG-2 ;WORD
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RGNBUFFER EQU VERT-4 ;LONG
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RUNBUF EQU RGNBUFFER-4 ;LONG <BAL 21Sep88>
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BUFLEFT EQU RUNBUF-2 ;WORD
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BUFSIZE EQU BUFLEFT-2 ;WORD
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EXRTN EQU BUFSIZE-4 ;LONG
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RUNRTN EQU EXRTN-4 ;LONG
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SEEKMASK EQU RUNRTN-4 ;LONG
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DSTMASKBUF EQU SEEKMASK-4 ;LONG
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DSTMASKALIGN EQU DSTMASKBUF-4 ;LONG
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STATEA EQU DSTMASKALIGN-RGNREC ;RGN STATE RECORD
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STATEB EQU STATEA-RGNREC ;RGN STATE RECORD
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STATEC EQU STATEB-RGNREC ;RGN STATE RECORD
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MINRECT EQU STATEC-8 ;RECT <BAL 21Sep88>
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DSTSHIFT EQU MINRECT-2 ;WORD <BAL 21Sep88>
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RUNBUMP EQU DSTSHIFT-2 ;WORD <BAL 05Nov88>
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DSTROW EQU RUNBUMP-4 ;LONG <BAL 03Oct88>
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GoShow EQU DSTROW-4 ;LONG Go home and show crsr <BAL 21Mar89>
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STACKFREE EQU GoShow-4 ;LONG <BAL 21Sep88>
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IF (&CurFile 'SEEKMASK') THEN
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; STACK FRAME VARS USED BY PATEXPAND, COLORMAP, DRAWSLAB
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; (CALLED BY STRETCHBITS, RGNBLT, BITBLT, DRAWARC, DRAWLINE)
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; SET UP FOR BITBLT FOR RGNBLT
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EXPAT EQU STACKFREE-4 ;LONG YES
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PATVMASK EQU EXPAT-2 ;WORD (must follow expat)
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PATHMASK EQU PATVMASK-2 ;WORD (must follow PATVMASK)
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PATROW EQU PATHMASK-2 ;WORD (must follow PATHMASK)
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PATHPOS EQU PATROW-2 ;WORD YES
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filler5 EQU PATHPOS-1 ;BYTE <8> YES
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alphaMode EQU filler5-1 ;BYTE <8>
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PATVPOS EQU alphaMode-4 ;LONG <8> YES <BAL 22Jan89>
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LOCMODE EQU PATVPOS-2 ;WORD YES
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LOCPAT EQU LOCMODE-4 ;LONG YES
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FCOLOR EQU LOCPAT-4 ;LONG YES
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BCOLOR EQU FCOLOR-4 ;LONG YES
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useDither EQU BCOLOR-1 ;(was pixsrc) reclaimed 07Jul88 <BAL>
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NEWPATTERN EQU useDither-1 ;BYTE YES
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DSTPIX EQU NEWPATTERN-(PMREC+CTREC+20) ;PIXMAP+COLOR TABLE YES
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alphaBack EQU DSTPIX-4 ;<8> NOTE THAT THESE
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alphaMask EQU alphaBack-4 ;<8> OVERLAP WITH weight, pin
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alphaFore EQU alphaMask-4 ;<8> AND notWeight BELOW
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IF (&CurFile 'PATEXPAND') THEN
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; these shared stack frame vars are set up and used by the arithmetic drawing modes
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; (used by STRETCHBITS, RGNBLT, BITBLT, DRAWARC, DRAWLINE, DRAWSLAB, COLORMAP)
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weight EQU DSTPIX-6 ;RGB weight for averaging
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pin EQU weight ;RGB used by max, min
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notWeight EQU weight-6 ;RGB complement of weight (for average)
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multiColor EQU notWeight-1 ;byte set if source contains nonblack/white colors
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MMUsave EQU multiColor-1 ;byte MMU mode on entry to QD
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FGnotBlack EQU MMUsave-1 ;byte / true if forecolor black
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BGnotWhite EQU FGnotBlack-1 ;byte \ true if backcolor white (must follow FGBlack)
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colorTable EQU BGnotWhite-4 ;long pointer to color table
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invColor EQU colorTable-4 ;long pointer to inverse color table
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invSize EQU invColor-2 ;word resolution of inverse color table
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rtShift EQU invSize-2 ;Word used by average how far to shift
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transColor EQU rtShift-4 ;long copy of backcolor for transparent
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hilitColor EQU transColor-4 ;long hilite color pixels
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slabLeft EQU hilitColor-4 ;long bit offset from bufleft to pen position
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patHBitPos EQU slabLeft-4 ;long bit offset to pattern left
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IF (&CurFile = 'DRAWARC') THEN
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; STACK FRAME VARS USED ONLY BY DRAWARC
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SAVESTK EQU patHBitPos-4 ;LONG
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MODECASE EQU SAVESTK-4 ;LONG
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DSTLEFT EQU MODECASE-4 ;LONG
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TEMPRECTANGLE EQU DSTLEFT-8 ;RECT
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FASTFLAG EQU TEMPRECTANGLE-2 ;BYTE
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INNEROVAL EQU FASTFLAG-OVALSIZE ;OVAL RECORD (46)
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CRSRFLAG EQU INNEROVAL-2 ;WORD
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OUTEROVAL EQU CRSRFLAG-OVALSIZE ;OVAL RECORD (46)
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SKIPTOP EQU OUTEROVAL-2 ;WORD
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SKIPBOT EQU SKIPTOP-2 ;WORD
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ARCFLAG EQU SKIPBOT-1 ;BYTE FLAG
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SKIPFLAG EQU ARCFLAG-1 ;BYTE FLAG
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STOPANGLE EQU SKIPFLAG-2 ;INTEGER
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MIDVERT EQU STOPANGLE-2 ;INTEGER
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MIDHORIZ EQU MIDVERT-2 ;INTEGER
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WIDTH EQU MIDHORIZ-2 ;INTEGER
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HEIGHT EQU WIDTH-2 ;INTEGER
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SLOPE1 EQU HEIGHT-4 ;LONG, FIXED POINT
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SLOPE2 EQU SLOPE1-4 ;LONG, FIXED POINT
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LINE1 EQU SLOPE2-4 ;LONG, FIXED POINT
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LINE2 EQU LINE1-4 ;LONG, FIXED POINT
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FLAG1 EQU LINE2-2 ;WORD
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FLAG2 EQU FLAG1-2 ;WORD
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OUTERLEFT EQU FLAG2-2 ;WORD
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OUTERRIGHT EQU OUTERLEFT-2 ;WORD
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INNERLEFT EQU OUTERRIGHT-2 ;WORD
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INNERRIGHT EQU INNERLEFT-2 ;WORD
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REALBOUNDS EQU INNERRIGHT-4 ;LONG
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VARSIZE EQU REALBOUNDS ;SIZE OF LOCAL VARIABLES
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ELSEIF (&CurFile = 'DRAWLINE') THEN
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; STACK FRAME VARS USED ONLY BY DRAWLINE
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LINERECT EQU hilitColor-8 ;RECT
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SAVESTK EQU LINERECT-4 ;LONG
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MODECASE EQU SAVESTK-4 ;LONG
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LEFTEDGE EQU MODECASE-4 ;LONG, FIXED POINT
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RIGHTEDGE EQU LEFTEDGE-4 ;LONG, FIXED POINT
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SLOPE EQU RIGHTEDGE-4 ;LONG, FIXED POINT
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DSTLEFT EQU SLOPE-4 ;LONG
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SAVEA5 EQU DSTLEFT-4 ;LONG
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PORT EQU SAVEA5-4 ;LONG
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FASTFLAG EQU PORT-2 ;BYTE
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CRSRFLAG EQU FASTFLAG-2 ;WORD
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BIGRGN EQU CRSRFLAG-4 ;LONG, RgnHandle
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REALBOUNDS EQU BIGRGN-4 ;LONG
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VARSIZE EQU REALBOUNDS ;SIZE OF LOCAL VARIABLES
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ELSEIF (&CurFile = 'DRAWPOLY') THEN
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; Stack frame variables used in accord with DrawArc
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SAVESTK EQU hilitColor-4 ;LONG
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MODECASE EQU SAVESTK-4 ;LONG
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DSTLEFT EQU MODECASE-4 ;LONG
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TEMPRECTANGLE EQU DSTLEFT-8 ;RECT
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FASTFLAG EQU TEMPRECTANGLE-2 ;BYTE
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CRSRFLAG EQU FASTFLAG-2 ;SHORT
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REALBOUNDS EQU CRSRFLAG-4 ;LONG
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; Stack frame variables used only in DrawPoly
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FreeList Equ RealBounds-4
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StackLimit Equ FreeList-4
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ActiveList Equ StackLimit-4
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OldStacker Equ ActiveList-4
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VarSize Equ OldStacker
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ELSEIF ( (&CurFile = 'STRETCH') | (&CurFile = 'RGNBLT') | (&CurFile = 'BITBLT') ) THEN
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; MORE SHARED STACK FRAME VARS (STRETCHBITS, RGNBLT, BITBLT)
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alignSrcPM EQU hilitColor-2 ;WORD
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SRCPIX EQU alignSrcPM-(PMREC+CTREC+20) ;PIXMAP YES
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alignMaskPM EQU SRCPIX-2 ;WORD
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MASKPIX EQU alignMaskPM-(PMREC+CTREC+20) ;PIXMAP YES
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SRCROW EQU MASKPIX-4 ;LONG YES
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MASKROW EQU SRCROW-4 ;LONG YES
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SRCSHIFT EQU MASKROW-2 ;WORD YES
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MASKSHIFT EQU SRCSHIFT-2 ;WORD YES
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INVERTFLAG EQU MASKSHIFT-4 ;LONG YES
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SAVESTK EQU INVERTFLAG-4 ;LONG YES
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SAVEA5 EQU SAVESTK-4 ;LONG YES
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SRCBUF EQU SAVEA5-4 ;LONG
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DSTBUF EQU SRCBUF-4 ;LONG
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SCALEBUF EQU DSTBUF-4 ;LONG
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dstBufBump EQU SCALEBUF-4 ;LONG <BAL 17Mar89>
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scaleBufBump EQU dstBufBump-4 ;LONG <BAL 17Mar89>
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SRCMASKBUF EQU scaleBufBump-4 ;LONG
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filler1 EQU SRCMASKBUF-2 ;WORD
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SRCLONGS EQU filler1-2 ;WORD
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SRCMASKLONGS EQU SRCLONGS-2 ;WORD
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DSTMASKLONGS EQU SRCMASKLONGS-2 ;WORD
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DSTLONGS EQU DSTMASKLONGS-2 ;WORD
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SCALELONGS EQU DSTLONGS-2 ;WORD
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SRCADDR EQU SCALELONGS-4 ;LONG
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MASKADDR EQU SRCADDR-4 ;LONG
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DSTADDR EQU MASKADDR-4 ;LONG
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SRCLIMIT EQU DSTADDR-4 ;LONG
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NUMER EQU SRCLIMIT-4 ;POINT
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DENOM EQU NUMER-4 ;POINT
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MASKNUMER EQU DENOM-4 ;POINT
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MASKDENOM EQU MASKNUMER-4 ;POINT
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MODECASE EQU MASKDENOM-4 ;LONG
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; STACK FRAME VARS USED BY STRETCHBITS ONLY
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RATIOCASE EQU MODECASE-4 ;LONG
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MASKCASE EQU RATIOCASE-4 ;LONG
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HORIZFRACTION EQU MASKCASE-2 ;WORD
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MASKFRACT EQU HORIZFRACTION-2 ;WORD
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SCALECASE EQU MASKFRACT-4 ;LONG
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SRCSCANS EQU SCALECASE-2 ;WORD
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SRCPIXCNT EQU SRCSCANS-2 ;WORD
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SRCALIGN EQU SRCPIXCNT-4 ;LONG
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DSTALIGN EQU SRCALIGN-4 ;LONG
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MASKALIGN EQU DSTALIGN-4 ;LONG
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ScaleTbl EQU MASKALIGN-4 ;LONG
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VERROR EQU ScaleTbl-2 ;WORD
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CRSRFLAG EQU VERROR-2 ;WORD
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REALBOUNDS EQU CRSRFLAG-4 ;LONG
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; STACK FRAME VARS USED BY RGNBLT ONLY
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FIRSTV EQU REALBOUNDS-2 ;WORD
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LASTV EQU FIRSTV-2 ;WORD
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VBUMP EQU LASTV-2 ;WORD, MUST BE ABOVE HBUMP
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HBUMP EQU VBUMP-2 ;WORD
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RGNADDR EQU HBUMP-4 ;LONG
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filler2 EQU RGNADDR-2 ;WORD
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SRCSIZE EQU filler2-2 ;WORD
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SAVESTK2 EQU SRCSIZE-4 ;LONG
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; STACK FRAME VARS USED BY BITBLT ONLY
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SRCV EQU SAVESTK2-2 ;WORD
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DSTV EQU SRCV-2 ;WORD
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SRCBUMP EQU DSTV-2 ;WORD
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HEIGHT EQU SRCBUMP-2 ;WORD
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SRCRECT2 EQU HEIGHT-8 ;RECT
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FIRSTMASK EQU SRCRECT2-4 ;LONG
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LONGCNT EQU FIRSTMASK-2 ;WORD
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; STACK FRAME VARS USED BY RGNBLT/BITBLT
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doneMid EQU LONGCNT-1 ;Byte two flags used to control loop
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endSwitch EQU doneMid-1 ;Byte three-way switch chooses from src, pat, bigpat
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lastMask EQU endSwitch-4 ;Long mask for last long blitted on line
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midCount EQU lastMask-2 ;Word # of pixels on line less mask longs - 1
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pixInLong EQU midCount-2 ;Word # of pixels in a long - 1
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patOffset EQU pixInLong-4 ;Long pattern horizontal initial offset
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patPos EQU patOffset-2 ;Word pattern vertical offset
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destPixCnt EQU patPos-2 ;word 1-based cnt of pixels to blit<02Mar89 BAL>
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destPixOffset EQU destPixCnt-4 ;long destination pixel offset <08Jan89 BAL>
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pixInLong1 EQU destPixOffset-2 ;Word same as pixInLong, 1 based (for transparent)
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longBump EQU pixInLong1-2 ;Word 32 signed direction of blit (for transparent)
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; MORE STACK FRAME VARS USED BY STRETCHBITS ONLY
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stITabPtr EQU longBump-4 ;pointer to inverse table (not header) <17Jun88 BAL>
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stITabInfo EQU stITabPtr-4 ;pointer to luminance table (not header)<17Mar89 BAL>
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stSProc EQU stITabInfo-4 ;head of search proc list <17Jun88 BAL>
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stTmpProc EQU stSProc-4 ;working copy of current searchproc <17Jun88 BAL>
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stCLUTPtr EQU stTmpProc-4 ;ptr to dst clut for dither <28Jun88 BAL>
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stITabRes EQU stCLUTPtr-2 ;inverse table resolution if direct <17Jun88 BAL>
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ErrPhase EQU stITabRes-2 ;initial position in src long <07Sep88 BAL>
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ErrBuf EQU ErrPhase-4 ;ptr to scan of error values <29Aug88 BAL>
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ErrSrcBuf EQU ErrBuf-4 ;ptr to last position in src buf <07Sep88 BAL>
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errDir EQU ErrSrcBuf-1 ;err diffusion direction flag <04Sep88 BAL>
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useAverage EQU errDir-1 ;scaling quality flag <04Sep88 BAL>
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ABufSize EQU useAverage-2 ;long cnt size of AvrgBuf <04Sep88 BAL>
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AvrgBuf EQU ABufSize-4 ;ptr to scan of rgb accumulations <04Sep88 BAL>
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StackHandle EQU AvrgBuf-4 ;MFTemp memory for alternate stack <09Apr89 BAL>
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FastCase EQU StackHandle-1 ;no invert/copy/no stretch/no colorize<03Apr89 BAL>
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realDepth EQU FastCase-1 ;byte preserving src depth before RGB conversion <1.5>
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realSrcShift EQU realDepth-2 ;word preserving src shift before RGB conversion <1.5>
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scaleBltA3 EQU realSrcShift-4 ;value reloaded into A3 by scaleBlt <1.3> BAL
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RunBuf2 EQU scaleBltA3-4 ;used for reverse dither run mask <1.3> BAL
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oldHiHeapMark EQU RunBuf2-4 ;used during stack swapping <1.3> BAL
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srcMergeCase EQU oldHiHeapMark-4 ;routine for vertical src averaging <17Apr90 KON>
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maskMergeCase EQU srcMergeCase-4 ;routine for vertical mask averaging<17Apr90 KON>
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CombineMaskCase EQU maskMergeCase-4 ;routine to blend src and dst using mask <25Apr90 KON>
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MaskError EQU CombineMaskCase-2 ;error for verical mask scaling <17Apr90 KON>
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XLateFlag EQU MaskError-2 ;translation flags for mode and colorizing
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RGBFrColor EQU XLateFlag-6 ;fg color for colorizing at srcbuf
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RGBBgColor EQU RGBFrColor-6 ;bg color for colorizing at srcbuf
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SrcPixPmTable EQU RGBBgColor-4 ;32-bit clean pointer to src color table <24AUG90 KON>
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MaskPixPmTable EQU SrcPixPmTable-4 ;32-bit clean pointer to mask color table <24AUG90 KON>
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newSrcRect EQU MaskPixPmTable-8 ;Rectangle <KON 12NOV90>
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newMaskRect EQU newSrcRect-8 ;Rectangle <KON 12NOV90>
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newDstRect EQU newMaskRect-8 ;Rectangle <KON 12NOV90>
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saveStkLowPt EQU newDstRect-4 ;long value of stklowpt <KON 12NOV90>
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stReserved1 EQU saveStkLowPt-4 ;long reserved for patches <17Apr90 KON>
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VARSIZE EQU stReserved1 ;SIZE OF LOCAL VARIABLES
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ENDIF ;[STRETCH | RGNBLT | BITBLT]
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ENDIF ;(!PATEXPAND)
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ENDIF ;(!SEEKMASK)
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