98e75f2d |
1 | /* |
2 | * Texture compression |
3 | * Version: 1.0 |
4 | * |
5 | * Copyright (C) 2004 Daniel Borca All Rights Reserved. |
6 | * |
7 | * this is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by |
9 | * the Free Software Foundation; either version 2, or (at your option) |
10 | * any later version. |
11 | * |
12 | * this is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with GNU Make; see the file COPYING. If not, write to |
19 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | */ |
21 | |
22 | |
23 | #ifndef INTERNAL_H_included |
24 | #define INTERNAL_H_included |
25 | |
26 | /*****************************************************************************\ |
27 | * DLL stuff |
28 | \*****************************************************************************/ |
29 | |
30 | #ifdef __WIN32__ |
31 | #define TAPI __declspec(dllexport) |
32 | #define TAPIENTRY /*__stdcall*/ |
33 | #else |
34 | #define TAPI |
35 | #define TAPIENTRY |
36 | #endif |
37 | |
38 | |
39 | /*****************************************************************************\ |
40 | * 64bit types on 32bit machine |
41 | \*****************************************************************************/ |
42 | |
43 | #if (defined(__GNUC__) && !defined(__cplusplus)) || defined(__MSC__) |
44 | |
45 | typedef unsigned long long qword; |
46 | |
47 | #define Q_MOV32(a, b) a = b |
48 | #define Q_OR32(a, b) a |= b |
49 | #define Q_SHL(a, c) a <<= c |
50 | |
51 | #else /* !__GNUC__ */ |
52 | |
53 | typedef struct { |
54 | dword lo, hi; |
55 | } qword; |
56 | |
57 | #define Q_MOV32(a, b) a.lo = b |
58 | #define Q_OR32(a, b) a.lo |= b |
59 | #define Q_SHL(a, c) \ |
60 | do { \ |
61 | if ((c) >= 32) { \ |
62 | a.hi = a.lo << ((c) - 32); \ |
63 | a.lo = 0; \ |
64 | } else { \ |
65 | a.hi = (a.hi << (c)) | (a.lo >> (32 - (c)));\ |
66 | a.lo <<= c; \ |
67 | } \ |
68 | } while (0) |
69 | |
70 | #endif /* !__GNUC__ */ |
71 | |
72 | |
73 | /*****************************************************************************\ |
74 | * Config |
75 | \*****************************************************************************/ |
76 | |
77 | #define RCOMP 0 |
78 | #define GCOMP 1 |
79 | #define BCOMP 2 |
80 | #define ACOMP 3 |
81 | |
82 | /*****************************************************************************\ |
83 | * Metric |
84 | \*****************************************************************************/ |
85 | |
86 | #define F(i) (float)1 /* can be used to obtain an oblong metric: 0.30 / 0.59 / 0.11 */ |
87 | #define SAFECDOT 1 /* for paranoids */ |
88 | |
89 | #define MAKEIVEC(NV, NC, IV, B, V0, V1) \ |
90 | do { \ |
91 | /* compute interpolation vector */\ |
92 | float d2 = 0.0F; \ |
93 | float rd2; \ |
94 | \ |
95 | for (i = 0; i < NC; i++) { \ |
96 | IV[i] = (V1[i] - V0[i]) * F(i);\ |
97 | d2 += IV[i] * IV[i]; \ |
98 | } \ |
99 | rd2 = (float)NV / d2; \ |
100 | B = 0; \ |
101 | for (i = 0; i < NC; i++) { \ |
102 | IV[i] *= F(i); \ |
103 | B -= IV[i] * V0[i]; \ |
104 | IV[i] *= rd2; \ |
105 | } \ |
106 | B = B * rd2 + 0.5F; \ |
107 | } while (0) |
108 | |
109 | #define CALCCDOT(TEXEL, NV, NC, IV, B, V)\ |
110 | do { \ |
111 | float dot = 0.0F; \ |
112 | for (i = 0; i < NC; i++) { \ |
113 | dot += V[i] * IV[i]; \ |
114 | } \ |
115 | TEXEL = (int)(dot + B); \ |
116 | if (SAFECDOT) { \ |
117 | if (TEXEL < 0) { \ |
118 | TEXEL = 0; \ |
119 | } else if (TEXEL > NV) { \ |
120 | TEXEL = NV; \ |
121 | } \ |
122 | } \ |
123 | } while (0) |
124 | |
125 | |
126 | /*****************************************************************************\ |
127 | * Utility functions |
128 | \*****************************************************************************/ |
129 | |
130 | void |
131 | _mesa_upscale_teximage2d (unsigned int inWidth, unsigned int inHeight, |
132 | unsigned int outWidth, unsigned int outHeight, |
133 | unsigned int comps, |
134 | const byte *src, int srcRowStride, |
135 | unsigned char *dest); |
136 | |
137 | #endif |