; Version: 3.14
; Created: Friday, October 20, 1989 at 9:42:37 PM
;
; File: QDOffscreen.a
;
; Assembler Interface to the Macintosh Libraries
;	Copyright:	© 1991-1992 by Apple Computer, Inc., all rights reserved.
;
;	Change History (most recent first):
;
;		<10>	  7/1/92	DCL		This file is the replacement for the now obsolete
;									QDOffscreenEqu.a. Changed the 'including' name to match the new
;									file name.
;		 <9>	 6/14/91	JL		Checked in official MPW 3.2Ä version. Adjusted keepLocalBit's
;									comment; removed <27MAR90 KON>.
;		 <8>	 1/30/91	gbm		sab, #38: Change the Ôalready including this fileÕ variable to
;									all uppercase (for security reasons)
;		 <7>	 1/15/91	KON		Change useMFTempBit to UseTempMemBit. [csd]
;		 <5>	 3/27/90	KON		Add KeepLocal flag (bit3) for gWorld flags.
;		 <2>	12/28/89	dba		add equates for MF temp. memory bit
;___________________________________________________________________________
;
; Offscreen Equates -- This file defines the public equates for Offscreen
; routines.
;___________________________________________________________________________

	IF &TYPE('__INCLUDINGQDOFFSCREEN__') = 'UNDEFINED' THEN
__INCLUDINGQDOFFSCREEN__	SET	1

; New Error codes

cDepthErr 		EQU 		-157      				; invalid pixel depth

; Flag bits passed to or returned by UpdateGWorld

purgePixBit   	EQU 		0         				; make the offscreen buffer purgeable
noNewDeviceBit	EQU 		1         				; don't create an offscreen device
useTempMemBit  	EQU 		2         				; create the buffer in MF temp. memory
keepLocalBit	EQU			3						; keep buffer in main memory
pixelsPurgeableBit EQU		6         				; pixels are purgeable
pixelsLockedBit   EQU 		7         				; pixels are locked
mapPixBit 		EQU 		16        				; set if color table mapping occurred
newDepthBit   	EQU 		17        				; set if pixels were scaled to a different depth
alignPixBit   	EQU 		18        				; set if pixels were realigned to screen alignment
newRowBytesBit	EQU 		19        				; set if pixmap was reconfigured in a new rowBytes
reallocPixBit 	EQU 		20        				; set if offscreen buffer had to be reallocated
clipPixBit		EQU 		28        				; set if pixels were or are to be clipped
stretchPixBit 	EQU 		29        				; set if pixels were or are to be stretched/shrinked
ditherPixBit  	EQU 		30        				; set if pixels were or are to be dithered
gwFlagErrBit  	EQU 		31        				; sign bit set indicates error

; Mask equivalents of the above bits

purgePix  		EQU 		$1
noNewDevice   	EQU 		$2
useTempMem 		EQU 		$4
keepLocal		EQU			$8
pixelsPurgeable EQU 		$40
pixelsLocked  	EQU 		$80
mapPix			EQU 		$10000
newDepth  		EQU 		$20000
alignPix  		EQU 		$40000
newRowBytes   	EQU 		$80000
reallocPix		EQU 		$100000
clipPix   		EQU 		$10000000
stretchPix		EQU 		$20000000
ditherPix 		EQU 		$40000000
gwFlagErr 		EQU 		$80000000

	ENDIF	; ...already included