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1.1 root 1: ;---------------------------Module-Header------------------------------;
2: ; Module Name: display.inc
3: ;
4: ; Copyright (c) 1992 Microsoft Corporation
5: ;-----------------------------------------------------------------------;
6:
7: NUMBER_PLANES equ 4 ;4 plane format
8:
9:
10:
11: ; The color structure is how this driver stores its physical
12: ; colors in memory. The color consists of four bytes (dword),
13: ; one byte for each of three planes of color, and a fourth
14: ; byte which is a combination of one bit from each plane, plus
15: ; other special information.
16: ;
17: ; C3Bit will have to be expanded as needed for the fourth plane.
18:
19:
20: phys_color struc
21: pcol_C0 db ? ;Plane C0
22: pcol_C1 db ? ;Plane C1
23: pcol_C2 db ? ;Plane C2
24: pcol_C3 db ? ;Plane C3/Monochrome/Special information
25: phys_color ends
26:
27:
28: ; Definitions for the pcol_C3 byte of the physical color
29: ;
30: ; Some of these definitions have limitations as to when they
31: ; are valid. They are as follows:
32: ;
33: ; C0_BIT color device, phys color, solid brushes if SOLID_COLOR
34: ; C1_BIT color device, phys color, solid brushes if SOLID_COLOR
35: ; C2_BIT color device, phys color, solid brushes if SOLID_COLOR
36: ; C3_BIT color device, phys color, solid brushes if SOLID_COLOR
37: ; MONO_BIT mono device, phys color
38: ; ONES_OR_ZEROS color device, phys color, solid brushes if SOLID_COLOR
39: ; GREY_SCALE color device, dithered solid and hatched brushes
40: ; SOLID_BRUSH color device, solid brush qualifier
41: ;
42: ; There may be brushes where the accelerators could have been set,
43: ; but wasn't. That's life.
44:
45:
46: SPECIAL equ pcol_C3 ;Special information is here
47: C0_BIT equ 00000001b ; C0 color
48: C1_BIT equ 00000010b ; C1 color
49: C2_BIT equ 00000100b ; C2 color
50: C3_BIT equ 00001000b ; C3 color
51: MONO_BIT equ 00010000b ; Monochrome bit
52: ONES_OR_ZEROS equ 00100000b ; Color is really all 1's or all 0's
53: GREY_SCALE equ 01000000b ; Indicates a real grey scale brush
54: SOLID_BRUSH equ 10000000b ; Indicates a solid color brush
55:
56: .errnz (size phys_color) - 4 ;Must be a double word
57:
58:
59:
60: ; The brush structure is OEM dependant, and can contain whatever
61: ; information that is needed to realize the given brush.
62: ;
63: ; For this implementation, the brush will consist of an 8x8
64: ; pattern for each of the planes, and another 8x8 pattern
65: ; for monochrome devices and for monochrome to color conversion
66: ; (for something like a hatched brush, this would contain the
67: ; monochrome mask used to create the brush).
68: ;
69: ; The style will also be stored in the brush and is used to
70: ; catch hollow brushes and exit early.
71: ;
72: ; A flag specific to the EGA is also stored in the brush. This
73: ; flag indicates that the brush is a solid brush and that the
74: ; color for each plane is a solid color (all 1's or all 0's).
75: ; Patterns which are solid in each plane can be handle as a
76: ; special case in Bitblt when the raster op is P or Pn.
77:
78:
79: SIZE_PATTERN equ 8 ;Size of an 8 by 8 pattern in bytes
80:
81:
82: oem_brush_def struc
83: oem_brush_C0 db SIZE_PATTERN dup (?) ;C0 plane
84: oem_brush_C1 db SIZE_PATTERN dup (?) ;C1 plane
85: oem_brush_C2 db SIZE_PATTERN dup (?) ;C2 plane
86: oem_brush_C3 db SIZE_PATTERN dup (?) ;C3 plane
87: oem_brush_mono db 32 dup (?) ;Mono portion
88: oem_brush_style dw 0 ;Style of the brush
89: oem_brush_accel db 0 ;Accellerator for solids
90: oem_brush_fg db 0 ;current foreground (text) color
91: oem_brush_bg db 0 ;current background color
92: oem_brush_rwidth db 0 ;pre expanded width
93: oem_brush_yshft db 0 ;
94: oem_brush_spar2 db 0 ;just a fill byte for now
95: oem_brush_width dd 0 ;Width of brush
96: oem_brush_height dd 0 ;Height of brush
97: oem_brush_planes db 32 dup (?) ;Special Plane Masks
98: oem_brush_pmono dd 0 ;pointer to mono pattern
99: oem_brush_def ends ; (same as "Special" above)
100:
101: ; Brush styles defined by GDI
102:
103: BS_SOLID equ 0
104: BS_HOLLOW equ 1
105: BS_HATCHED equ 2
106: BS_PATTERN equ 3
107: BS_MONO_PATTERN equ 4
108: BS_COLOR_PATTERN equ 5
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