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UFloat.a
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UFloat.a
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;Photoshop version 1.0.1, file: UFloat.a
; Computer History Museum, www.computerhistory.org
; This material is (C)Copyright 1990 Adobe Systems Inc.
; It may not be distributed to third parties.
; It is licensed for non-commercial use according to
; www.computerhistory.org/softwarelicense/photoshop/
INCLUDE 'Traps.a'
; **********************************************************************
SEG 'ARes'
DoMakeMonochrome PROC EXPORT
; Calling sequence (Pascal conventions):
;
; PROCEDURE DoMakeMonochrome (rPtr: Ptr;
; rTable: TLookUpTable;
; gPtr: Ptr;
; gTable: TLookUpTable;
; bPtr: Ptr;
; bTable: TLookUpTable;
; mPtr: Ptr;
; count: INTEGER);
;
; Parameter Offsets
@rPtr EQU 34
@rTable EQU 30
@gPtr EQU 26
@gTable EQU 22
@bPtr EQU 18
@bTable EQU 14
@mPtr EQU 10
@count EQU 8
; Size of parameters
@params EQU 30
; Save registers
LINK A6,#0
MOVEM.L A2-A6,-(SP)
; Red pass
MOVE.W @count(A6),D0
SUB.W #1,D0
MOVE.L @rPtr(A6),A0
MOVE.L @rTable(A6),A1
MOVE.L @gPtr(A6),A2
MOVE.L @gTable(A6),A3
MOVE.L @bPtr(A6),A4
MOVE.L @bTable(A6),A5
MOVE.L @mPtr(A6),A6
CLR.W D1
@1 MOVE.B (A0)+,D1
MOVE.B (A1,D1.W),D2
MOVE.B (A2)+,D1
ADD.B (A3,D1.W),D2
MOVE.B (A4)+,D1
ADD.B (A5,D1.W),D2
MOVE.B D2,(A6)+
DBF D0,@1
; Clean up and exit
MOVEM.L (SP)+,A2-A6
UNLK A6
MOVE.L (SP)+,A0
ADD.W #@params,SP
JMP (A0)
; **********************************************************************
SEG 'ADoCommand'
ZapMaskRGB PROC EXPORT
; Calling sequence (Pascal conventions):
;
; PROCEDURE ZapMaskRGB (rDataPtr: Ptr;
; gDataPtr: Ptr;
; bDataPtr: Ptr;
; grayLUT: TRGBLookUpTable;
; maskPtr: Ptr;
; count: INTEGER;
; map: TLookUpTable);
;
; Parameter Offsets
@rDataPtr EQU 30
@gDataPtr EQU 26
@bDataPtr EQU 22
@grayLUT EQU 18
@maskPtr EQU 14
@count EQU 12
@map EQU 8
; Size of parameters
@params EQU 26
; Save registers
LINK A6,#0
MOVEM.L A2-A5/D3,-(SP)
; Unload parameters
MOVE.L @rDataPtr(A6),A0
MOVE.L @gDataPtr(A6),A1
MOVE.L @bDataPtr(A6),A2
MOVE.L @grayLUT(A6),A3
MOVE.L @maskPtr(A6),A4
MOVE.L @map(A6),A5
MOVE.W @count(A6),D0
SUB.W #1,D0
; Initialize index
CLR.W D1
MOVE.W #256,D2
MOVE.W #512,D3
; Look up luminosity in LUT
@1 MOVE.B (A0)+,D1
MOVE.B (A3,D1.W),D1
MOVE.B (A1)+,D2
ADD.B (A3,D2.W),D1
MOVE.B (A2)+,D3
ADD.B (A3,D3.W),D1
MOVE.B (A5,D1.W),D1
; Compare to existing mask value
CMP.B (A4)+,D1
BHS.S @2
MOVE.B D1,-1(A4)
@2 DBF D0,@1
; Clean up and exit
MOVEM.L (SP)+,A2-A5/D3
UNLK A6
MOVE.L (SP)+,A0
ADD.W #@params,SP
JMP (A0)
; **********************************************************************
SEG 'ARes'
ZapMaskLUT PROC EXPORT
; Calling sequence (Pascal conventions):
;
; PROCEDURE ZapMaskLUT (dataPtr: Ptr;
; maskPtr: Ptr;
; count: INTEGER;
; map: TLookUpTable);
;
; Parameter Offsets
@dataPtr EQU 18
@maskPtr EQU 14
@count EQU 12
@map EQU 8
; Size of parameters
@params EQU 14
; Save registers
LINK A6,#0
MOVE.L A2,-(SP)
; Unload parameters
MOVE.L @dataPtr(A6),A0
MOVE.L @maskPtr(A6),A1
MOVE.L @map(A6),A2
MOVE.W @count(A6),D0
SUB.W #1,D0
; Process bytes
CLR.W D1
@1 MOVE.B (A0)+,D1
MOVE.B (A2,D1.W),D1
CMP.B (A1)+,D1
BHS.S @2
MOVE.B D1,-1(A1)
@2 DBF D0,@1
; Clean up and exit
MOVE.L (SP)+,A2
UNLK A6
MOVE.L (SP)+,A0
ADD.W #@params,SP
JMP (A0)
; **********************************************************************
SEG 'ARes'
DoBlendBelow PROC EXPORT
; Calling sequence (Pascal conventions):
;
; PROCEDURE DoBlendBelow (maskPtr: Ptr;
; floatPtr: Ptr;
; belowPtr: Ptr;
; count: INTEGER;
; mode: INTEGER;
; mat: INTEGER);
;
; Parameter Offsets
@maskPtr EQU 22
@floatPtr EQU 18
@belowPtr EQU 14
@count EQU 12
@mode EQU 10
@mat EQU 8
; Size of parameters
@params EQU 18
; Save registers
LINK A6,#0
MOVEM.L A2/D3-D7,-(SP)
; Unload parameters
MOVE.L @maskPtr(A6),A0
MOVE.L @floatPtr(A6),A1
MOVE.L @belowPtr(A6),A2
MOVE.W @count(A6),D0
SUB.W #1,D0
MOVE.W @mode(A6),D6
MOVE.W @mat(A6),D7
; Get values
CLR.W D1
CLR.W D2
CLR.W D3
; Get source value
@1 MOVE.B (A1)+,D2
; Get mask value
MOVE.B (A0)+,D1
; If mask is zero, leave alone
BEQ.S @8
; If mask is 255, copy from source
NOT.B D1
BEQ.S @5
; Compute inverse delta
CLR.W D3
MOVE.B (A2),D3
TST.W D7
BMI.S @2
SUB.W D7,D3
BPL.S @4
BRA.S @3
@2 SUB.W D2,D3
BPL.S @4
; Case 1: negative delta
@3 NEG.W D3
MULU.W D1,D3
ADD.W #127,D3
MULU.W #257,D3
SWAP D3
SUB.W D3,D2
BPL.S @5
CLR.W D2
BRA.S @5
; Case 2: positive delta
@4 MULU.W D1,D3
ADD.W #127,D3
MULU.W #257,D3
SWAP D3
ADD.W D3,D2
CMP.W #255,D2
BLE.S @5
MOVE.W #255,D2
; Save value to destination if allowed
@5 CMP.W #3,D6
BEQ.S @6
CMP.W #2,D6
BNE.S @7
; Mode - Darken only
CMP.B (A2),D2
BHS.S @8
BRA.S @7
; Mode - Lighten only
@6 CMP.B (A2),D2
BLS.S @8
; Save the value
@7 MOVE.B D2,(A2)
; Move to next pixel
@8 ADDA.W #1,A2
DBF D0,@1
; Clean up and exit
MOVEM.L (SP)+,A2/D3-D7
UNLK A6
MOVE.L (SP)+,A0
ADD.W #@params,SP
JMP (A0)
; **********************************************************************
SEG 'ARes'
DoBlendColorOnly PROC EXPORT
; Calling sequence (Pascal conventions):
;
; PROCEDURE DoBlendColorOnly (grayPtr: Ptr;
; rPtr: Ptr;
; gPtr: Ptr;
; bPtr: Ptr;
; grayLUT: TRGBLookUpTable;
; count: INTEGER);
;
; Parameter Offsets
@grayPtr EQU 26
@rPtr EQU 22
@gPtr EQU 18
@bPtr EQU 14
@grayLUT EQU 10
@count EQU 8
; Size of parameters
@params EQU 22
; Save registers
LINK A6,#0
MOVEM.L A2-A4/D3-D7,-(SP)
; Unload parameters
MOVE.L @grayPtr(A6),A0
MOVE.L @rPtr(A6),A1
MOVE.L @gPtr(A6),A2
MOVE.L @bPtr(A6),A3
MOVE.L @grayLUT(A6),A4
MOVE.W @count(A6),D0
SUB.W #1,D0
; Get old luminosity
@1 CLR.W D7
MOVE.B (A0)+,D7
; Compute new luminosity value
CLR.W D2
CLR.W D3
CLR.W D4
MOVE.B (A1)+,D2
MOVE.B (A2)+,D3
MOVE.B (A3)+,D4
CLR.W D6
MOVE.B (A4,D2.W),D6
ADDA.W #256,A4
ADD.B (A4,D3.W),D6
ADDA.W #256,A4
ADD.B (A4,D4.W),D6
SUBA.W #512,A4
; If luminosities are equal, no need to scale
CMP.W D6,D7
BEQ @8
; If old luminosity is 255, set output to white
CMP.W #255,D7
BEQ.S @1A
; If new luminosity is zero, set output to gray
TST.W D6
BNE.S @2
@1A MOVE.B D7,-1(A1)
MOVE.B D7,-1(A2)
MOVE.B D7,-1(A3)
BRA.S @8
; Scale to match old lumonisity
@2 MOVE.W D6,D5
LSR.W #1,D5
MULU.W D7,D2
ADD.W D5,D2
DIVU.W D6,D2
MULU.W D7,D3
ADD.W D5,D3
DIVU.W D6,D3
MULU.W D7,D4
ADD.W D5,D4
DIVU.W D6,D4
; Find maximum value
MOVE.W D2,D5
CMP.W D3,D5
BGE.S @3
MOVE.W D3,D5
@3 CMP.W D4,D5
BGE.S @4
MOVE.W D4,D5
; If less than or equal to 255, we are done
@4 CMP.W #255,D5
BLE.S @7
; Else rescale values
SUB.W D7,D5
NOT.B D7
MOVE.W D5,D6
LSR.W #1,D6
EXT.L D6
MULU.W D7,D2
ADD.L D6,D2
DIVU.W D5,D2
MULU.W D7,D3
ADD.L D6,D3
DIVU.W D5,D3
MULU.W D7,D4
ADD.L D6,D4
DIVU.W D5,D4
; Find new maximum value
MOVE.W D2,D5
CMP.W D3,D5
BGE.S @5
MOVE.W D3,D5
@5 CMP.W D4,D5
BGE.S @6
MOVE.W D4,D5
; Add in gray to make maximum 255
@6 NOT.B D5
ADD.B D5,D2
ADD.B D5,D3
ADD.B D5,D4
; Save new value
@7 MOVE.B D2,-1(A1)
MOVE.B D3,-1(A2)
MOVE.B D4,-1(A3)
; Move to next pixel
@8 DBF D0,@1
; Clean up and exit
MOVEM.L (SP)+,A2-A4/D3-D7
UNLK A6
MOVE.L (SP)+,A0
ADD.W #@params,SP
JMP (A0)
; **********************************************************************
SEG 'AClipboard'
DoMaskBinary PROC EXPORT
; Calling sequence (Pascal conventions):
;
; PROCEDURE DoMaskBinary (maskPtr: Ptr;
; dataPtr: Ptr;
; count: INTEGER);
;
; Parameter Offsets
@maskPtr EQU 14
@dataPtr EQU 10
@count EQU 8
; Size of parameters
@params EQU 10
; Save registers
LINK A6,#0
; Unload addresses
MOVE.L @maskPtr(A6),A0
MOVE.L @dataPtr(A6),A1
; Initial mask
MOVE.B #$7F,D1
; Loop through bytes
MOVE.W @count(A6),D0
SUB.W #1,D0
@1 TST.B (A0)+
BMI.S @2
; Mask bit in data
AND.B D1,(A1)
; Move to next bit
@2 ROR.B #1,D1
BCS.S @3
ADDA.W #1,A1
; Move to next byte
@3 DBF D0,@1
; Clean up and exit
UNLK A6
MOVE.L (SP)+,A0
ADD.W #@params,SP
JMP (A0)
; **********************************************************************
SEG 'ADoFloat'
DoPatternFill PROC EXPORT
; Calling sequence (Pascal conventions):
;
; PROCEDURE DoPatternFill (srcPtr: Ptr;
; dstPtr: Ptr;
; width: INTEGER;
; count: INTEGER);
;
; Parameter Offsets
@srcPtr EQU 16
@dstPtr EQU 12
@width EQU 10
@count EQU 8
; Size of parameters
@params EQU 12
; Save registers
LINK A6,#0
; Initialize loop
MOVE.L @srcPtr(A6),A0
MOVE.L @dstPtr(A6),A1
MOVE.W @width(A6),D0
MOVE.W @count(A6),D1
SUB.W #1,D1
; Move another byte
@1 MOVE.B (A0)+,(A1)+
SUB.W #1,D0
DBEQ D1,@1
BNE.S @3
@2 MOVE.L @srcPtr(A6),A0
MOVE.W @width(A6),D0
DBF D1,@1
; Clean up and exit
@3 UNLK A6
MOVE.L (SP)+,A0
ADD.W #@params,SP
JMP (A0)
; **********************************************************************
SEG 'ADoFloat'
DoLinearGradient PROC EXPORT
; Calling sequence (Pascal conventions):
;
; PROCEDURE DoLinearGradient (dstPtr: Ptr;
; count: INTEGER;
; base: LONGINT;
; step: LONGINT;
; dist: LONGINT;
; table: Ptr);
;
; Parameter Offsets
@dstPtr EQU 26
@count EQU 24
@base EQU 20
@step EQU 16
@dist EQU 12
@table EQU 8
; Size of parameters
@params EQU 22
; Save registers
LINK A6,#0
MOVEM.L D3-D7,-(SP)
; Unload parameters
MOVE.L @dstPtr(A6),A0
MOVE.W @count(A6),D0
SUB.W #1,D0
MOVE.L @base(A6),D1
MOVE.L @step(A6),D2
MOVE.L @dist(A6),D3
MOVE.L @table(A6),A1
; Find scale factor
CLR.W D4
MOVE.L D3,D5
@A CMP.L #$10000,D5
BLT.S @B
ADD.W #1,D4
LSR.L #1,D5
BRA.S @A
@B MOVE.L D5,D6
LSR.L #1,D6
; If D1 <= 0, set result to first value
@1 TST.L D1
BGT.S @2
MOVE.B (A1),(A0)+
BRA.S @next
; If D1 >= dist, set result to last value
@2 CMP.L D3,D1
BLT.S @3
MOVE.B 4095(A1),(A0)+
BRA.S @next
; Somewhere in between
@3 MOVE.L D1,D7
LSR.L D4,D7
MULU.W #4095,D7
ADD.L D6,D7
DIVU.W D5,D7
MOVE.B (A1,D7.W),(A0)+
; Move to next pixel
@next ADD.L D2,D1
DBF D0,@1
; Clean up and exit
MOVEM.L (SP)+,D3-D7
UNLK A6
MOVE.L (SP)+,A0
ADD.W #@params,SP
JMP (A0)
; **********************************************************************
SEG 'ADoFloat'
DoRadialGradient PROC EXPORT
; Calling sequence (Pascal conventions):
;
; PROCEDURE DoRadialGradient (dstPtr: Ptr;
; count: INTEGER;
; deltaRow: INTEGER;
; deltaCol: INTEGER;
; dist: LONGINT;
; table: Ptr);
;
; Parameter Offsets
@dstPtr EQU 22
@count EQU 20
@deltaRow EQU 18
@deltaCol EQU 16
@dist EQU 12
@table EQU 8
; Size of parameters
@params EQU 18
; Save registers
LINK A6,#0
MOVEM.L D3-D7,-(SP)
; Unload parameters
MOVE.L @dstPtr(A6),A0
MOVE.W @count(A6),D0
SUB.W #1,D0
MOVE.W @deltaRow(A6),D1
MOVE.W @deltaCol(A6),D2
MOVE.L @dist(A6),D3
MOVE.L @table(A6),A1
; Square row displacement
MULS.W D1,D1
; Find scale factor
CLR.W D4
@1 CMP.L #$10000,D3
BLT.S @2
ADD.W #1,D4
LSR.L #1,D3
BRA.S @1
; Compute this radius squared
@2 MOVE.W D2,D7
MULS.W D7,D7
ADD.L D1,D7
LSR.L D4,D7
; If radius squared >= dist, set result to last value
CMP.L D3,D7
BLT.S @3
MOVE.B 4095(A1),(A0)+
BRA.S @next
; Somewhere inside, find square of radius
@3 MULU.W #4095,D7
MOVE.L D7,D6
SWAP D6
MULU.W #4095,D6
MULU.W #4095,D7
SWAP D7
CLR.L D5
MOVE.W D7,D5
ADD.L D5,D6
CLR.W D7
SWAP D7
DIVU.W D3,D6
MOVE.W D6,D5
CLR.W D6
ADD.L D6,D7
DIVU.W D3,D7
SWAP D7
CLR.W D7
SWAP D7
SWAP D5
ADD.L D5,D7
; Find integer square root
SWAP D4
MOVE.W #$800,D4
CLR.W D5
@4 ADD.W D4,D5
MOVE.W D5,D6
MULU.W D5,D6
CMP.L D6,D7
BHS.S @5
SUB.W D4,D5
@5 LSR.W #1,D4
BCC.S @4
SWAP D4
; Map through rate table
MOVE.B (A1,D5.W),(A0)+
; Move to next pixel
@next ADD.W #1,D2
DBF D0,@2
; Clean up and exit
MOVEM.L (SP)+,D3-D7
UNLK A6
MOVE.L (SP)+,A0
ADD.W #@params,SP
JMP (A0)
; **********************************************************************
END