1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.3
4 *
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 /**
27 * \file colormac.h
28 * Color-related macros
29 */
30
31
32 #ifndef COLORMAC_H
33 #define COLORMAC_H
34
35
36 #include "config.h"
37 #include "macros.h"
38 #include "mtypes.h"
39
40
41 /**
42 * Convert four float values in [0,1] to ubytes in [0,255] with clamping.
43 */
44 static inline void
_mesa_unclamped_float_rgba_to_ubyte(GLubyte dst[4],const GLfloat src[4])45 _mesa_unclamped_float_rgba_to_ubyte(GLubyte dst[4], const GLfloat src[4])
46 {
47 int i;
48 for (i = 0; i < 4; i++)
49 UNCLAMPED_FLOAT_TO_UBYTE(dst[i], src[i]);
50 }
51
52
53 /**
54 * \name Generic color packing macros. All inputs should be GLubytes.
55 *
56 * \todo We may move these into texstore.h at some point.
57 */
58 /*@{*/
59
60 #define PACK_COLOR_8888( X, Y, Z, W ) \
61 (((X) << 24) | ((Y) << 16) | ((Z) << 8) | (W))
62
63 #define PACK_COLOR_8888_REV( X, Y, Z, W ) \
64 (((W) << 24) | ((Z) << 16) | ((Y) << 8) | (X))
65
66 #define PACK_COLOR_888( X, Y, Z ) \
67 (((X) << 16) | ((Y) << 8) | (Z))
68
69 #define PACK_COLOR_565( X, Y, Z ) \
70 ((((X) & 0xf8) << 8) | (((Y) & 0xfc) << 3) | (((Z) & 0xf8) >> 3))
71
72 #define PACK_COLOR_565_REV( X, Y, Z ) \
73 (((X) & 0xf8) | ((Y) & 0xe0) >> 5 | (((Y) & 0x1c) << 11) | (((Z) & 0xf8) << 5))
74
75 #define PACK_COLOR_5551( R, G, B, A ) \
76 ((((R) & 0xf8) << 8) | (((G) & 0xf8) << 3) | (((B) & 0xf8) >> 2) | \
77 ((A) >> 7))
78
79 #define PACK_COLOR_1555( A, B, G, R ) \
80 ((((B) & 0xf8) << 7) | (((G) & 0xf8) << 2) | (((R) & 0xf8) >> 3) | \
81 (((A) & 0x80) << 8))
82
83 #define PACK_COLOR_1555_REV( A, B, G, R ) \
84 ((((B) & 0xf8) >> 1) | (((G) & 0xc0) >> 6) | (((G) & 0x38) << 10) | (((R) & 0xf8) << 5) | \
85 ((A) ? 0x80 : 0))
86
87 #define PACK_COLOR_2101010_UB( A, B, G, R ) \
88 (((B) << 22) | ((G) << 12) | ((R) << 2) | \
89 (((A) & 0xc0) << 24))
90
91 #define PACK_COLOR_2101010_US( A, B, G, R ) \
92 ((((B) >> 6) << 20) | (((G) >> 6) << 10) | ((R) >> 6) | \
93 (((A) >> 14) << 30))
94
95 #define PACK_COLOR_4444( R, G, B, A ) \
96 ((((R) & 0xf0) << 8) | (((G) & 0xf0) << 4) | ((B) & 0xf0) | ((A) >> 4))
97
98 #define PACK_COLOR_4444_REV( R, G, B, A ) \
99 ((((B) & 0xf0) << 8) | (((A) & 0xf0) << 4) | ((R) & 0xf0) | ((G) >> 4))
100
101 #define PACK_COLOR_44( L, A ) \
102 (((L) & 0xf0) | (((A) & 0xf0) >> 4))
103
104 #define PACK_COLOR_88( L, A ) \
105 (((L) << 8) | (A))
106
107 #define PACK_COLOR_88_REV( L, A ) \
108 (((A) << 8) | (L))
109
110 #define PACK_COLOR_1616( L, A ) \
111 (((L) << 16) | (A))
112
113 #define PACK_COLOR_1616_REV( L, A ) \
114 (((A) << 16) | (L))
115
116 #define PACK_COLOR_332( R, G, B ) \
117 (((R) & 0xe0) | (((G) & 0xe0) >> 3) | (((B) & 0xc0) >> 6))
118
119 #define PACK_COLOR_233( B, G, R ) \
120 (((B) & 0xc0) | (((G) & 0xe0) >> 2) | (((R) & 0xe0) >> 5))
121
122 /*@}*/
123
124
125 #endif /* COLORMAC_H */
126