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 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
