fbutil.c (2702B)
1 /* 2 * Copyright © 1998 Keith Packard 3 * 4 * Permission to use, copy, modify, distribute, and sell this software and its 5 * documentation for any purpose is hereby granted without fee, provided that 6 * the above copyright notice appear in all copies and that both that 7 * copyright notice and this permission notice appear in supporting 8 * documentation, and that the name of Keith Packard not be used in 9 * advertising or publicity pertaining to distribution of the software without 10 * specific, written prior permission. Keith Packard makes no 11 * representations about the suitability of this software for any purpose. It 12 * is provided "as is" without express or implied warranty. 13 * 14 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 16 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR 17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 20 * PERFORMANCE OF THIS SOFTWARE. 21 */ 22 23 #ifdef HAVE_DIX_CONFIG_H 24 #include <dix-config.h> 25 #endif 26 27 #include "fb.h" 28 29 FbBits 30 fbReplicatePixel(Pixel p, int bpp) 31 { 32 FbBits b = p; 33 34 b &= FbFullMask(bpp); 35 while (bpp < FB_UNIT) { 36 b |= b << bpp; 37 bpp <<= 1; 38 } 39 return b; 40 } 41 42 #define O 0 43 #define I FB_ALLONES 44 45 const FbMergeRopRec FbMergeRopBits[16] = { 46 {O, O, O, O}, /* clear 0x0 0 */ 47 {I, O, O, O}, /* and 0x1 src AND dst */ 48 {I, O, I, O}, /* andReverse 0x2 src AND NOT dst */ 49 {O, O, I, O}, /* copy 0x3 src */ 50 {I, I, O, O}, /* andInverted 0x4 NOT src AND dst */ 51 {O, I, O, O}, /* noop 0x5 dst */ 52 {O, I, I, O}, /* xor 0x6 src XOR dst */ 53 {I, I, I, O}, /* or 0x7 src OR dst */ 54 {I, I, I, I}, /* nor 0x8 NOT src AND NOT dst */ 55 {O, I, I, I}, /* equiv 0x9 NOT src XOR dst */ 56 {O, I, O, I}, /* invert 0xa NOT dst */ 57 {I, I, O, I}, /* orReverse 0xb src OR NOT dst */ 58 {O, O, I, I}, /* copyInverted 0xc NOT src */ 59 {I, O, I, I}, /* orInverted 0xd NOT src OR dst */ 60 {I, O, O, I}, /* nand 0xe NOT src OR NOT dst */ 61 {O, O, O, I}, /* set 0xf 1 */ 62 }; 63