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Microsoft Windows NT Build 511 (DDK SDK) 11-01-1993

;---------------------------Module-Header------------------------------;
; Module Name: display.inc
;
; Copyright (c) 1992 Microsoft Corporation
;-----------------------------------------------------------------------;

NUMBER_PLANES   equ     4               ;4 plane format



;	The color structure is how this driver stores its physical
;	colors in memory.  The color consists of four bytes (dword),
;	one byte for each of three planes of color, and a fourth
;	byte which is a combination of one bit from each plane, plus
;	other special information.
;
;	C3Bit will have to be expanded as needed for the fourth plane.


phys_color	struc
pcol_C0 	db	?		;Plane C0
pcol_C1 	db	?		;Plane C1
pcol_C2 	db	?		;Plane C2
pcol_C3 	db	?		;Plane C3/Monochrome/Special information
phys_color	ends


;	Definitions for the pcol_C3 byte of the physical color
;
;	Some of these definitions have limitations as to when they
;	are valid.  They are as follows:
;
;	C0_BIT		color device, phys color, solid brushes if SOLID_COLOR
;	C1_BIT		color device, phys color, solid brushes if SOLID_COLOR
;	C2_BIT		color device, phys color, solid brushes if SOLID_COLOR
;	C3_BIT		color device, phys color, solid brushes if SOLID_COLOR
;	MONO_BIT	mono  device, phys color
;	ONES_OR_ZEROS	color device, phys color, solid brushes if SOLID_COLOR
;	GREY_SCALE	color device, dithered solid and hatched brushes
;	SOLID_BRUSH	color device, solid brush qualifier
;
;	There may be brushes where the accelerators could have been set,
;	but wasn't.  That's life.


SPECIAL 	equ	pcol_C3 	;Special information is here
C0_BIT		equ	00000001b	;  C0 color
C1_BIT		equ	00000010b	;  C1 color
C2_BIT		equ	00000100b	;  C2 color
C3_BIT		equ	00001000b	;  C3 color
MONO_BIT	equ	00010000b	;  Monochrome bit
ONES_OR_ZEROS	equ	00100000b	;  Color is really all 1's or all 0's
GREY_SCALE	equ	01000000b	;  Indicates a real grey scale brush
SOLID_BRUSH	equ	10000000b	;  Indicates a solid color brush

        .errnz  (size phys_color) - 4   ;Must be a double word



;	The brush structure is OEM dependant, and can contain whatever
;	information that is needed to realize the given brush.
;
;	For this implementation, the brush will consist of an 8x8
;	pattern for each of the planes, and another 8x8 pattern
;	for monochrome devices and for monochrome to color conversion
;	(for something like a hatched brush, this would contain the
;	monochrome mask used to create the brush).
;
;	The style will also be stored in the brush and is used to
;	catch hollow brushes and exit early.
;
;	A flag specific to the EGA is also stored in the brush.  This
;	flag indicates that the brush is a solid brush and that the
;	color for each plane is a solid color (all 1's or all 0's).
;	Patterns which are solid in each plane can be handle as a
;	special case in Bitblt when the raster op is P or Pn.


SIZE_PATTERN	equ	8		;Size of an 8 by 8 pattern in bytes


oem_brush_def	struc
oem_brush_C0	 db	SIZE_PATTERN dup (?)	;C0 plane
oem_brush_C1	 db	SIZE_PATTERN dup (?)	;C1 plane
oem_brush_C2	 db	SIZE_PATTERN dup (?)	;C2 plane
oem_brush_C3	 db	SIZE_PATTERN dup (?)    ;C3 plane
oem_brush_mono	 db	32       dup (?)	;Mono portion
oem_brush_style  dw	0			;Style of the brush
oem_brush_accel  db	0			;Accellerator for solids
oem_brush_fg	 db	0			;current foreground (text) color
oem_brush_bg	 db	0			;current background color
oem_brush_rwidth db	0			;pre expanded width
oem_brush_yshft  db	0			;
oem_brush_spar2  db	0			;just a fill byte for now
oem_brush_width	 dd	0			;Width of brush
oem_brush_height dd     0			;Height of brush
oem_brush_planes db	32       dup (?)	;Special Plane Masks
oem_brush_pmono  dd     0			;pointer to mono pattern
oem_brush_def	ends				;  (same as "Special" above)

;	Brush styles defined by GDI

BS_SOLID            equ     0
BS_HOLLOW           equ     1
BS_HATCHED          equ     2
BS_PATTERN          equ     3
BS_MONO_PATTERN     equ     4
BS_COLOR_PATTERN    equ     5

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