mirror of
https://github.com/godotengine/godot.git
synced 2024-11-24 21:22:48 +00:00
1062 lines
7.1 KiB
C++
1062 lines
7.1 KiB
C++
/**************************************************************************/
|
|
/* betsy_bc1.h */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/**************************************************************************/
|
|
|
|
#ifndef BETSY_BC1_H
|
|
#define BETSY_BC1_H
|
|
|
|
constexpr const float dxt1_encoding_table[1024] = {
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
1,
|
|
0,
|
|
1,
|
|
1,
|
|
0,
|
|
1,
|
|
0,
|
|
1,
|
|
0,
|
|
1,
|
|
1,
|
|
1,
|
|
1,
|
|
2,
|
|
0,
|
|
2,
|
|
0,
|
|
0,
|
|
4,
|
|
2,
|
|
1,
|
|
2,
|
|
1,
|
|
2,
|
|
1,
|
|
3,
|
|
0,
|
|
3,
|
|
0,
|
|
3,
|
|
0,
|
|
3,
|
|
1,
|
|
1,
|
|
5,
|
|
3,
|
|
2,
|
|
3,
|
|
2,
|
|
4,
|
|
0,
|
|
4,
|
|
0,
|
|
4,
|
|
1,
|
|
4,
|
|
1,
|
|
4,
|
|
2,
|
|
4,
|
|
2,
|
|
4,
|
|
2,
|
|
3,
|
|
5,
|
|
5,
|
|
1,
|
|
5,
|
|
1,
|
|
5,
|
|
2,
|
|
4,
|
|
4,
|
|
5,
|
|
3,
|
|
5,
|
|
3,
|
|
5,
|
|
3,
|
|
6,
|
|
2,
|
|
6,
|
|
2,
|
|
6,
|
|
2,
|
|
6,
|
|
3,
|
|
5,
|
|
5,
|
|
6,
|
|
4,
|
|
6,
|
|
4,
|
|
4,
|
|
8,
|
|
7,
|
|
3,
|
|
7,
|
|
3,
|
|
7,
|
|
3,
|
|
7,
|
|
4,
|
|
7,
|
|
4,
|
|
7,
|
|
4,
|
|
7,
|
|
5,
|
|
5,
|
|
9,
|
|
7,
|
|
6,
|
|
7,
|
|
6,
|
|
8,
|
|
4,
|
|
8,
|
|
4,
|
|
8,
|
|
5,
|
|
8,
|
|
5,
|
|
8,
|
|
6,
|
|
8,
|
|
6,
|
|
8,
|
|
6,
|
|
7,
|
|
9,
|
|
9,
|
|
5,
|
|
9,
|
|
5,
|
|
9,
|
|
6,
|
|
8,
|
|
8,
|
|
9,
|
|
7,
|
|
9,
|
|
7,
|
|
9,
|
|
7,
|
|
10,
|
|
6,
|
|
10,
|
|
6,
|
|
10,
|
|
6,
|
|
10,
|
|
7,
|
|
9,
|
|
9,
|
|
10,
|
|
8,
|
|
10,
|
|
8,
|
|
8,
|
|
12,
|
|
11,
|
|
7,
|
|
11,
|
|
7,
|
|
11,
|
|
7,
|
|
11,
|
|
8,
|
|
11,
|
|
8,
|
|
11,
|
|
8,
|
|
11,
|
|
9,
|
|
9,
|
|
13,
|
|
11,
|
|
10,
|
|
11,
|
|
10,
|
|
12,
|
|
8,
|
|
12,
|
|
8,
|
|
12,
|
|
9,
|
|
12,
|
|
9,
|
|
12,
|
|
10,
|
|
12,
|
|
10,
|
|
12,
|
|
10,
|
|
11,
|
|
13,
|
|
13,
|
|
9,
|
|
13,
|
|
9,
|
|
13,
|
|
10,
|
|
12,
|
|
12,
|
|
13,
|
|
11,
|
|
13,
|
|
11,
|
|
13,
|
|
11,
|
|
14,
|
|
10,
|
|
14,
|
|
10,
|
|
14,
|
|
10,
|
|
14,
|
|
11,
|
|
13,
|
|
13,
|
|
14,
|
|
12,
|
|
14,
|
|
12,
|
|
12,
|
|
16,
|
|
15,
|
|
11,
|
|
15,
|
|
11,
|
|
15,
|
|
11,
|
|
15,
|
|
12,
|
|
15,
|
|
12,
|
|
15,
|
|
12,
|
|
15,
|
|
13,
|
|
13,
|
|
17,
|
|
15,
|
|
14,
|
|
15,
|
|
14,
|
|
16,
|
|
12,
|
|
16,
|
|
12,
|
|
16,
|
|
13,
|
|
16,
|
|
13,
|
|
16,
|
|
14,
|
|
16,
|
|
14,
|
|
16,
|
|
14,
|
|
15,
|
|
17,
|
|
17,
|
|
13,
|
|
17,
|
|
13,
|
|
17,
|
|
14,
|
|
16,
|
|
16,
|
|
17,
|
|
15,
|
|
17,
|
|
15,
|
|
17,
|
|
15,
|
|
18,
|
|
14,
|
|
18,
|
|
14,
|
|
18,
|
|
14,
|
|
18,
|
|
15,
|
|
17,
|
|
17,
|
|
18,
|
|
16,
|
|
18,
|
|
16,
|
|
16,
|
|
20,
|
|
19,
|
|
15,
|
|
19,
|
|
15,
|
|
19,
|
|
15,
|
|
19,
|
|
16,
|
|
19,
|
|
16,
|
|
19,
|
|
16,
|
|
19,
|
|
17,
|
|
17,
|
|
21,
|
|
19,
|
|
18,
|
|
19,
|
|
18,
|
|
20,
|
|
16,
|
|
20,
|
|
16,
|
|
20,
|
|
17,
|
|
20,
|
|
17,
|
|
20,
|
|
18,
|
|
20,
|
|
18,
|
|
20,
|
|
18,
|
|
19,
|
|
21,
|
|
21,
|
|
17,
|
|
21,
|
|
17,
|
|
21,
|
|
18,
|
|
20,
|
|
20,
|
|
21,
|
|
19,
|
|
21,
|
|
19,
|
|
21,
|
|
19,
|
|
22,
|
|
18,
|
|
22,
|
|
18,
|
|
22,
|
|
18,
|
|
22,
|
|
19,
|
|
21,
|
|
21,
|
|
22,
|
|
20,
|
|
22,
|
|
20,
|
|
20,
|
|
24,
|
|
23,
|
|
19,
|
|
23,
|
|
19,
|
|
23,
|
|
19,
|
|
23,
|
|
20,
|
|
23,
|
|
20,
|
|
23,
|
|
20,
|
|
23,
|
|
21,
|
|
21,
|
|
25,
|
|
23,
|
|
22,
|
|
23,
|
|
22,
|
|
24,
|
|
20,
|
|
24,
|
|
20,
|
|
24,
|
|
21,
|
|
24,
|
|
21,
|
|
24,
|
|
22,
|
|
24,
|
|
22,
|
|
24,
|
|
22,
|
|
23,
|
|
25,
|
|
25,
|
|
21,
|
|
25,
|
|
21,
|
|
25,
|
|
22,
|
|
24,
|
|
24,
|
|
25,
|
|
23,
|
|
25,
|
|
23,
|
|
25,
|
|
23,
|
|
26,
|
|
22,
|
|
26,
|
|
22,
|
|
26,
|
|
22,
|
|
26,
|
|
23,
|
|
25,
|
|
25,
|
|
26,
|
|
24,
|
|
26,
|
|
24,
|
|
24,
|
|
28,
|
|
27,
|
|
23,
|
|
27,
|
|
23,
|
|
27,
|
|
23,
|
|
27,
|
|
24,
|
|
27,
|
|
24,
|
|
27,
|
|
24,
|
|
27,
|
|
25,
|
|
25,
|
|
29,
|
|
27,
|
|
26,
|
|
27,
|
|
26,
|
|
28,
|
|
24,
|
|
28,
|
|
24,
|
|
28,
|
|
25,
|
|
28,
|
|
25,
|
|
28,
|
|
26,
|
|
28,
|
|
26,
|
|
28,
|
|
26,
|
|
27,
|
|
29,
|
|
29,
|
|
25,
|
|
29,
|
|
25,
|
|
29,
|
|
26,
|
|
28,
|
|
28,
|
|
29,
|
|
27,
|
|
29,
|
|
27,
|
|
29,
|
|
27,
|
|
30,
|
|
26,
|
|
30,
|
|
26,
|
|
30,
|
|
26,
|
|
30,
|
|
27,
|
|
29,
|
|
29,
|
|
30,
|
|
28,
|
|
30,
|
|
28,
|
|
30,
|
|
28,
|
|
31,
|
|
27,
|
|
31,
|
|
27,
|
|
31,
|
|
27,
|
|
31,
|
|
28,
|
|
31,
|
|
28,
|
|
31,
|
|
28,
|
|
31,
|
|
29,
|
|
31,
|
|
29,
|
|
31,
|
|
30,
|
|
31,
|
|
30,
|
|
31,
|
|
30,
|
|
31,
|
|
31,
|
|
31,
|
|
31,
|
|
0,
|
|
0,
|
|
0,
|
|
1,
|
|
1,
|
|
0,
|
|
1,
|
|
0,
|
|
1,
|
|
1,
|
|
2,
|
|
0,
|
|
2,
|
|
1,
|
|
3,
|
|
0,
|
|
3,
|
|
0,
|
|
3,
|
|
1,
|
|
4,
|
|
0,
|
|
4,
|
|
0,
|
|
4,
|
|
1,
|
|
5,
|
|
0,
|
|
5,
|
|
1,
|
|
6,
|
|
0,
|
|
6,
|
|
0,
|
|
6,
|
|
1,
|
|
7,
|
|
0,
|
|
7,
|
|
0,
|
|
7,
|
|
1,
|
|
8,
|
|
0,
|
|
8,
|
|
1,
|
|
8,
|
|
1,
|
|
8,
|
|
2,
|
|
9,
|
|
1,
|
|
9,
|
|
2,
|
|
9,
|
|
2,
|
|
9,
|
|
3,
|
|
10,
|
|
2,
|
|
10,
|
|
3,
|
|
10,
|
|
3,
|
|
10,
|
|
4,
|
|
11,
|
|
3,
|
|
11,
|
|
4,
|
|
11,
|
|
4,
|
|
11,
|
|
5,
|
|
12,
|
|
4,
|
|
12,
|
|
5,
|
|
12,
|
|
5,
|
|
12,
|
|
6,
|
|
13,
|
|
5,
|
|
13,
|
|
6,
|
|
8,
|
|
16,
|
|
13,
|
|
7,
|
|
14,
|
|
6,
|
|
14,
|
|
7,
|
|
9,
|
|
17,
|
|
14,
|
|
8,
|
|
15,
|
|
7,
|
|
15,
|
|
8,
|
|
11,
|
|
16,
|
|
15,
|
|
9,
|
|
15,
|
|
10,
|
|
16,
|
|
8,
|
|
16,
|
|
9,
|
|
16,
|
|
10,
|
|
15,
|
|
13,
|
|
17,
|
|
9,
|
|
17,
|
|
10,
|
|
17,
|
|
11,
|
|
15,
|
|
16,
|
|
18,
|
|
10,
|
|
18,
|
|
11,
|
|
18,
|
|
12,
|
|
16,
|
|
16,
|
|
19,
|
|
11,
|
|
19,
|
|
12,
|
|
19,
|
|
13,
|
|
17,
|
|
17,
|
|
20,
|
|
12,
|
|
20,
|
|
13,
|
|
20,
|
|
14,
|
|
19,
|
|
16,
|
|
21,
|
|
13,
|
|
21,
|
|
14,
|
|
21,
|
|
15,
|
|
20,
|
|
17,
|
|
22,
|
|
14,
|
|
22,
|
|
15,
|
|
25,
|
|
10,
|
|
22,
|
|
16,
|
|
23,
|
|
15,
|
|
23,
|
|
16,
|
|
26,
|
|
11,
|
|
23,
|
|
17,
|
|
24,
|
|
16,
|
|
24,
|
|
17,
|
|
27,
|
|
12,
|
|
24,
|
|
18,
|
|
25,
|
|
17,
|
|
25,
|
|
18,
|
|
28,
|
|
13,
|
|
25,
|
|
19,
|
|
26,
|
|
18,
|
|
26,
|
|
19,
|
|
29,
|
|
14,
|
|
26,
|
|
20,
|
|
27,
|
|
19,
|
|
27,
|
|
20,
|
|
30,
|
|
15,
|
|
27,
|
|
21,
|
|
28,
|
|
20,
|
|
28,
|
|
21,
|
|
28,
|
|
21,
|
|
28,
|
|
22,
|
|
29,
|
|
21,
|
|
29,
|
|
22,
|
|
24,
|
|
32,
|
|
29,
|
|
23,
|
|
30,
|
|
22,
|
|
30,
|
|
23,
|
|
25,
|
|
33,
|
|
30,
|
|
24,
|
|
31,
|
|
23,
|
|
31,
|
|
24,
|
|
27,
|
|
32,
|
|
31,
|
|
25,
|
|
31,
|
|
26,
|
|
32,
|
|
24,
|
|
32,
|
|
25,
|
|
32,
|
|
26,
|
|
31,
|
|
29,
|
|
33,
|
|
25,
|
|
33,
|
|
26,
|
|
33,
|
|
27,
|
|
31,
|
|
32,
|
|
34,
|
|
26,
|
|
34,
|
|
27,
|
|
34,
|
|
28,
|
|
32,
|
|
32,
|
|
35,
|
|
27,
|
|
35,
|
|
28,
|
|
35,
|
|
29,
|
|
33,
|
|
33,
|
|
36,
|
|
28,
|
|
36,
|
|
29,
|
|
36,
|
|
30,
|
|
35,
|
|
32,
|
|
37,
|
|
29,
|
|
37,
|
|
30,
|
|
37,
|
|
31,
|
|
36,
|
|
33,
|
|
38,
|
|
30,
|
|
38,
|
|
31,
|
|
41,
|
|
26,
|
|
38,
|
|
32,
|
|
39,
|
|
31,
|
|
39,
|
|
32,
|
|
42,
|
|
27,
|
|
39,
|
|
33,
|
|
40,
|
|
32,
|
|
40,
|
|
33,
|
|
43,
|
|
28,
|
|
40,
|
|
34,
|
|
41,
|
|
33,
|
|
41,
|
|
34,
|
|
44,
|
|
29,
|
|
41,
|
|
35,
|
|
42,
|
|
34,
|
|
42,
|
|
35,
|
|
45,
|
|
30,
|
|
42,
|
|
36,
|
|
43,
|
|
35,
|
|
43,
|
|
36,
|
|
46,
|
|
31,
|
|
43,
|
|
37,
|
|
44,
|
|
36,
|
|
44,
|
|
37,
|
|
44,
|
|
37,
|
|
44,
|
|
38,
|
|
45,
|
|
37,
|
|
45,
|
|
38,
|
|
40,
|
|
48,
|
|
45,
|
|
39,
|
|
46,
|
|
38,
|
|
46,
|
|
39,
|
|
41,
|
|
49,
|
|
46,
|
|
40,
|
|
47,
|
|
39,
|
|
47,
|
|
40,
|
|
43,
|
|
48,
|
|
47,
|
|
41,
|
|
47,
|
|
42,
|
|
48,
|
|
40,
|
|
48,
|
|
41,
|
|
48,
|
|
42,
|
|
47,
|
|
45,
|
|
49,
|
|
41,
|
|
49,
|
|
42,
|
|
49,
|
|
43,
|
|
47,
|
|
48,
|
|
50,
|
|
42,
|
|
50,
|
|
43,
|
|
50,
|
|
44,
|
|
48,
|
|
48,
|
|
51,
|
|
43,
|
|
51,
|
|
44,
|
|
51,
|
|
45,
|
|
49,
|
|
49,
|
|
52,
|
|
44,
|
|
52,
|
|
45,
|
|
52,
|
|
46,
|
|
51,
|
|
48,
|
|
53,
|
|
45,
|
|
53,
|
|
46,
|
|
53,
|
|
47,
|
|
52,
|
|
49,
|
|
54,
|
|
46,
|
|
54,
|
|
47,
|
|
57,
|
|
42,
|
|
54,
|
|
48,
|
|
55,
|
|
47,
|
|
55,
|
|
48,
|
|
58,
|
|
43,
|
|
55,
|
|
49,
|
|
56,
|
|
48,
|
|
56,
|
|
49,
|
|
59,
|
|
44,
|
|
56,
|
|
50,
|
|
57,
|
|
49,
|
|
57,
|
|
50,
|
|
60,
|
|
45,
|
|
57,
|
|
51,
|
|
58,
|
|
50,
|
|
58,
|
|
51,
|
|
61,
|
|
46,
|
|
58,
|
|
52,
|
|
59,
|
|
51,
|
|
59,
|
|
52,
|
|
62,
|
|
47,
|
|
59,
|
|
53,
|
|
60,
|
|
52,
|
|
60,
|
|
53,
|
|
60,
|
|
53,
|
|
60,
|
|
54,
|
|
61,
|
|
53,
|
|
61,
|
|
54,
|
|
61,
|
|
54,
|
|
61,
|
|
55,
|
|
62,
|
|
54,
|
|
62,
|
|
55,
|
|
62,
|
|
55,
|
|
62,
|
|
56,
|
|
63,
|
|
55,
|
|
63,
|
|
56,
|
|
63,
|
|
56,
|
|
63,
|
|
57,
|
|
63,
|
|
58,
|
|
63,
|
|
59,
|
|
63,
|
|
59,
|
|
63,
|
|
60,
|
|
63,
|
|
61,
|
|
63,
|
|
62,
|
|
63,
|
|
62,
|
|
63,
|
|
63,
|
|
};
|
|
|
|
#endif // BETSY_BC1_H
|