1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/* $XConsortium: dwg.c /main/2 1996/10/28 06:57:55 kaleb $ */
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/util/stormdwg.c,v 1.1 1997/04/12 14:11:29 hohndel Exp $ */
#include <stdio.h>
#include <stdlib.h>
const char *opcodes[] = {
"line_open", /* 0000 */
"autoline_open", /* 0001 */
"line_close", /* 0010 */
"autoline_close", /* 0011 */
"trapezoid", /* 0100 */
"trapezoid texture map", /* 0101 */
"reserved trap", /* 0110 */
"reserved trap", /* 0111 */
"bitblt", /* 1000 */
"iload", /* 1001 */
"reserved", /* 1010 */
"reserved", /* 1011 */
"fbitblt", /* 1100 */
"iload scale", /* 1101 */
"reserved", /* 1110 */
"iload filter" /* 1111 */
};
const char *atype[] = {
"rpl - Write (Replace)", /* 000 */
"rstr - read-modify-write (raster)", /* 001 */
"reserved", /* 010 */
"z1 - depth mode with gouraud", /* 011 */
"blk - block write mode", /* 100 */
"reserved", /* 101 */
"reserved", /* 110 */
"I - Gouraud (with depth compare)" /* 111 */
};
const char *zmode[] = {
"NOZCMP - always", /* 000 */
"reserved", /* 001 */
"ZE - depth =", /* 010 */
"zne - depth !=", /* 011 */
"zlt", /* 100 */
"zlte", /* 101 */
"zgt", /* 110 */
"zgte" /* 111 */
};
const char *bop[] = {
"0", /* 0000 */
"~(D|S)", /* 0001 */
"D & ~S", /* 0010 */
"~S", /* 0011 */
"(~D) & S", /* 0100 */
"~D", /* 0101 */
"D ^ S", /* 0110 */
"~ (D & S)", /* 0111 */
"D & S", /* 1000 */
"~(D^S)", /* 1001 */
"D", /* 1010 */
"D | ~S", /* 1011 */
"S", /* 1100 */
"(~D) | S", /* 1101 */
"D | S", /* 1110 */
"1" /* 1111 */
};
const char *bitmod[] = {
"BMONOLEF - Source is mono, or if iload, source is little endian", /* 0000 */
"BPLAN - source is mono from one plane", /* 0001 */
"BFCOL - source is colour, and is formatted from host", /* 0010 */
"BU32BGR - source is colour. For ILOAD, it's in 32bpp, BGR format", /* 0011 */
"BMONOWEF - source is mono, or if iload, source is windows format", /* 0100 */
"error! no such mode", /* 0101 */
"error! no such mode", /* 0110 */
"BU32RGB - source is colour, or if iload, source is 32 bpp RGB", /* 0111 */
"error! no such mode", /* 1000 */
"error! no such mode", /* 1001 */
"error! no such mode", /* 1010 */
"BU24BGR - source is colour, of if iload, source is 24 bpp BGR", /* 1011 */
"error! no such mode", /* 1100 */
"error! no such mode", /* 1101 */
"BUYUV - source is color, or for ILOAD, it's in 4:2:2 YUV format", /* 1110 */
"BU24RGB - source is color, or for ILOAD, it's in 24 bpp RGB" /* 1111 */
};
int main(int argc, char **argv)
{
unsigned long val, tmp;
if ( argc != 2 )
{
fprintf(stderr, "usage: %s hexval\n", argv[0]);
return 1;
}
val = strtoul(argv[1], NULL, 16);
printf("the val is : %lu\n", val);
/* opcode */
tmp = val & 0x0f;
printf("opcode: %s\n", opcodes[tmp]);
tmp = ( val >> 4 ) & 0x7;
printf("atype: %s\n", atype[tmp]);
if ( val & 128 )
printf("xy bitblt\n");
else
printf("linear bitblt\n");
tmp = ( val >> 8 ) & 7;
printf("zmode: %s\n", zmode[tmp]);
if ( val & ( 1 << 11 ) )
printf("solid line or constant trapezoid\n");
else
printf("src0 - 3 may need to be loaded");
if ( val & ( 1 << 12 ))
printf("ar0-ar6 = 0\n");
else
printf("you may need to set ar0-6.\n");
if ( val & ( 1 << 13 ))
printf("sgn = 0\n");
else
printf("sgn is not affected\n");
if ( val & ( 1 << 14 ))
printf("shift = 0\n");
else
printf("shift is not affected\n");
tmp = (val>>16) & 0x0f;
if ( ((val >> 4) & 7) == 4 && tmp != 0x0c )
printf("Error! Block (BLK) atype and non-source binary op chosen. Replace (S) bop will be used.\n");
printf("bop = %s, where ~ = bitwise complement, ^ = xor\n", bop[tmp]);
if ( ((val >> 20) & 0x0f) == 0 )
printf("opaque object\n");
else
printf("partially opaque object\n");
tmp = (val >> 25) & 0x0f;
printf("bitmod: %s\n", bitmod[tmp]);
if ((val >> 29) & 0x01)
printf("patterning enabled\n");
else
printf("patterning disabled\n");
if ((val >> 30) & 0x01)
printf("background colour is transparent\n");
else
printf("background colour is opaque\n");
return 0;
}
|
