dibeng.inc

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;/*
;----------------------------------------------------------------------------
; DIBENG.INC
; Copyright (c) 1992 Microsoft Corporation
;
; Dib Engine Interface Definitions
;----------------------------------------------------------------------------

;----------------------------------------------------------------------------
; General Comments:
; The DIB Engine is non-palettized from GDI's perspective.  When an app
; selects a DIB into a memory DC, GDI will create a DIB Engine PDevice 
; (see definition below) and will stuff in a 'DI' in the deType field.
; Subsequent operations on this DC will result in calls to the DIB Engine
; with this PDevice.  
; Device drivers can also use the DIB Engine to handle most, if not all,
; of their rendering work.  A device driver exports the DIB Engine PDevice
; as it's own PDevice to GDI.  This PDevice contains a pointer to a 
; BitmapInfo header in the driver's data segment. Immediately following
; this is an optional color table for devices less than 16 bpp.
;----------------------------------------------------------------------------
;----------------------------------------------------------------------------
; E Q U A T E S
;----------------------------------------------------------------------------
BRUSHSIZE	equ	8		;height and width in pixels.
VER_DIBENG      equ     400h            ;version = 4.0
TYPE_DIBENG     equ     'RP'            ;deType
comment ~
*/
#define BRUSHSIZE       8
#define VER_DIBENG      0x400
#define TYPE_DIBENG     0x5250
/*
end comment ~
;----------------------------------------------------------------------------
; S T R U C T U R E S
;----------------------------------------------------------------------------

;----------------------------------------------------------------------------
; PDevice Structure for the DIB Engine.  deType will contain 'DI' when GDI
; calls the DIB Engine to perform graphics operations on the dib.  deType 
; will contain a 0 or a Selector if a mini-driver is calling the DIB Engine 
; to do graphics operations. 
;----------------------------------------------------------------------------
deCursorExclude		equ deBeginAccess
deCursorUnexclude	equ deEndAccess
comment ~
*/
#define deCursorExclude	deBeginAccess
#define deCursorUnexclude deEndAccess
/*
end comment ~

DIBENGINE	    struc						      ;*/ typedef struct {                        /*
  deType            dw  ?               ; contains TYPE_DIBENG or 0           ;*/ WORD         deType;                    /*
  deWidth	    dw	?		; Width of dib in pixels	      ;*/ WORD         deWidth;                   /*
  deHeight	    dw	?		; Height of dib in pixels	      ;*/ WORD         deHeight;                  /*
  deWidthBytes	    dw	?		; #bytes per scan line		      ;*/ WORD         deWidthBytes;              /*
  dePlanes	    db	?		; # of planes in bitmap 	      ;*/ BYTE         dePlanes;                  /*
  deBitsPixel	    db	?		; # of bits per pixel		      ;*/ BYTE         deBitsPixel;               /*
  deReserved1	    dd	?		; cannot be used.		      ;*/ DWORD        deReserved1;               /*
  deDeltaScan       dd  ?               ; + or -. Displacement to next scan.  ;*/ DWORD        deDeltaScan;               /*
  delpPDevice	    dd	?		; Pointer to associated PDevice       ;*/ LPBYTE       delpPDevice;               /*
  deBits	    df	?		; fword offset to bits of dib	      ;*/ DWORD        deBitsOffset;              /*
                                        ;                                     ;*/ WORD         deBitsSelector;            /*
  deFlags	    dw	?		; additional flags		      ;*/ WORD         deFlags;                   /*
  deVersion	    dw  ?		; lsb=minor, msb=major (0400h = 4.0)  ;*/ WORD         deVersion;                 /*
  deBitmapInfo	    dd	?		; pointer to the bitmapinfo header    ;*/ LPBITMAPINFO deBitmapInfo;              /*
  deBeginAccess     dd	?		; Begin surface access call back      ;*/ void         (FAR *deBeginAccess)();    /*
  deEndAccess       dd	?		; End surface access call back	      ;*/ void         (FAR *deEndAccess)();      /*
  deDriverReserved  dd  ?		; Reserved for Minidriver use.        ;*/ DWORD        deDriverReserved;          /*
DIBENGINE	    ends		                                      ;*/ } DIBENGINE, FAR *LPDIBENGINE;          /*
;----------------------------------------------------------------------------
; Definitions for DIBEngine.deFlags
;----------------------------------------------------------------------------
MINIDRIVER      equ     0000000000000001b       ;display driver
PALETTIZED      equ     0000000000000010b       ;paletized device
SELECTEDDIB     equ     0000000000000100b       ;DIB Section
OFFSCREEN       equ     0000000000001000b       ;offscreen surface (use with VRAM)
DISABLED        equ     0000000000010000b	;going away -- please use BUSY instead [raypat]
BUSY            equ     0000000000010000b	;
NOT_FRAMEBUFFER	equ	0000000000100000b	;example: 8514/a
FIVE6FIVE	equ	0000000001000000b	;16 bpp, 565 color format.
NON64KBANK      equ     0000000010000000b       ;bank size is not 64K
VRAM            equ     1000000000000000b       ;physical surface (video memory)
BANKEDVRAM      equ     0100000000000000b       ;VFlatD simulated
BANKEDSCAN      equ     0010000000000000b       ;VFlatD simulated (broken rasters)
PALETTE_XLAT    equ     0001000000000000b       ;background palette xlat
VGADITHER       equ     0000100000000000b       ;dither to VGA colors (first 8, and last 8)
CTCHANGE        equ     0000010000000000b       ;color table has been changed
DITHER256       equ     0000001000000000b       ;dither to 256 fixed colors
HWCURSOR        equ     0000000100000000b       ;driver is using a HWCURSOR right now.
FREE2           equ     0000000100000000b       ;Free.


BUSY_BIT        equ     4                       ;bit number to test for BUSY


comment ~
*/
#define MINIDRIVER      0x0001	  
#define PALETTIZED      0x0002	  
#define SELECTEDDIB     0x0004	  
#define OFFSCREEN       0x0008
#define DISABLED        0x0010
#define BUSY            0x0010		
#define NOT_FRAMEBUFFER 0x0020
#define FIVE6FIVE       0x0040
#define NON64KBANK      0x0080
#define VRAM            0x8000	  
#define BANKEDVRAM      0x4000	  
#define BANKEDSCAN      0x2000
#define PALETTE_XLAT    0x1000
#define VGADITHER       0x0800
#define CTCHANGE        0x0400
#define DITHER256       0x0200
#define HWCURSOR        0x0100

#define BUSY_BIT        0x0004
/*
end comment ~

;----------------------------------------------------------------------------
; Definitions for DIBEngine.deBeginAccess flags
;----------------------------------------------------------------------------
FB_ACCESS   	equ     0000000000000001b
CURSOREXCLUDE  	equ     0000000000001000b

comment ~
*/
#define FB_ACCESS	0x0001
#define CURSOREXCLUDE	0x0008
/*
end comment ~


;----------------------------------------------------------------------------
; Definitions for most significant byte of a physical color.
;----------------------------------------------------------------------------
GREY_BIT        equ     01000000b       ;color is grey (r=g=b)
comment ~
*/
#define GREY_BIT        0x40	  
/*
end comment ~
;----------------------------------------------------------------------------
; DIB Engine Color Table entry structure. This structure is used by device
; drivers that are using DIB Engine services for rendering.  This structure
; is identical to the RGBQuad structure except for some bit definitions
; in the 4th byte.
;----------------------------------------------------------------------------
DIBColorEntry	struc							      ;*/ typedef struct {		  /*