1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * 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 /*@{*/ 57 58 #define PACK_COLOR_8888( X, Y, Z, W ) \ 59 (((X) << 24) | ((Y) << 16) | ((Z) << 8) | (W)) 60 61 #define PACK_COLOR_565( X, Y, Z ) \ 62 ((((X) & 0xf8) << 8) | (((Y) & 0xfc) << 3) | (((Z) & 0xf8) >> 3)) 63 64 #define PACK_COLOR_1555( A, B, G, R ) \ 65 ((((B) & 0xf8) << 7) | (((G) & 0xf8) << 2) | (((R) & 0xf8) >> 3) | \ 66 (((A) & 0x80) << 8)) 67 68 #define PACK_COLOR_4444( R, G, B, A ) \ 69 ((((R) & 0xf0) << 8) | (((G) & 0xf0) << 4) | ((B) & 0xf0) | ((A) >> 4)) 70 71 #define PACK_COLOR_88( L, A ) \ 72 (((L) << 8) | (A)) 73 74 /*@}*/ 75 76 77 #endif /* COLORMAC_H */ 78
