shrotpackYX.h (4835B)
1 /* 2 * Copyright © 2004 Philip Blundell 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 Philip Blundell not be used in 9 * advertising or publicity pertaining to distribution of the software without 10 * specific, written prior permission. Philip Blundell 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 * PHILIP BLUNDELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 16 * EVENT SHALL PHILIP BLUNDELL 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 #include <X11/X.h> 24 #include "scrnintstr.h" 25 #include "windowstr.h" 26 #include "dixfontstr.h" 27 #include "mi.h" 28 #include "regionstr.h" 29 #include "globals.h" 30 #include "gcstruct.h" 31 #include "shadow.h" 32 #include "fb.h" 33 34 #if ROTATE == 270 35 36 #define WINSTEPX(stride) (stride) 37 #define WINSTART(x,y) (((pScreen->height - 1) - y) + (x * winStride)) 38 #define WINSTEPY() -1 39 40 #elif ROTATE == 90 41 42 #define WINSTEPX(stride) (-stride) 43 #define WINSTEPY() 1 44 #define WINSTART(x,y) (((pScreen->width - 1 - x) * winStride) + y) 45 46 #else 47 48 #error This rotation is not supported here 49 50 #endif 51 52 #ifdef __arm__ 53 #define PREFETCH 54 #endif 55 56 void 57 FUNC(ScreenPtr pScreen, shadowBufPtr pBuf) 58 { 59 RegionPtr damage = DamageRegion(pBuf->pDamage); 60 PixmapPtr pShadow = pBuf->pPixmap; 61 int nbox = RegionNumRects(damage); 62 BoxPtr pbox = RegionRects(damage); 63 FbBits *shaBits; 64 Data *shaBase, *shaLine, *sha; 65 FbStride shaStride, winStride; 66 int shaBpp; 67 _X_UNUSED int shaXoff, shaYoff; 68 int x, y, w, h; 69 Data *winBase, *win, *winLine; 70 CARD32 winSize; 71 72 fbGetDrawable(&pShadow->drawable, shaBits, shaStride, shaBpp, shaXoff, 73 shaYoff); 74 shaBase = (Data *) shaBits; 75 shaStride = shaStride * sizeof(FbBits) / sizeof(Data); 76 77 winBase = (Data *) (*pBuf->window) (pScreen, 0, 0, 78 SHADOW_WINDOW_WRITE, 79 &winSize, pBuf->closure); 80 winStride = (Data *) (*pBuf->window) (pScreen, 1, 0, 81 SHADOW_WINDOW_WRITE, 82 &winSize, pBuf->closure) - winBase; 83 84 while (nbox--) { 85 x = pbox->x1; 86 y = pbox->y1; 87 w = (pbox->x2 - pbox->x1); 88 h = pbox->y2 - pbox->y1; 89 90 shaLine = shaBase + (y * shaStride) + x; 91 #ifdef PREFETCH 92 __builtin_prefetch(shaLine); 93 #endif 94 winLine = winBase + WINSTART(x, y); 95 96 while (h--) { 97 sha = shaLine; 98 win = winLine; 99 100 while (sha < (shaLine + w - 16)) { 101 #ifdef PREFETCH 102 __builtin_prefetch(sha + shaStride); 103 #endif 104 *win = *sha++; 105 win += WINSTEPX(winStride); 106 *win = *sha++; 107 win += WINSTEPX(winStride); 108 *win = *sha++; 109 win += WINSTEPX(winStride); 110 *win = *sha++; 111 win += WINSTEPX(winStride); 112 113 *win = *sha++; 114 win += WINSTEPX(winStride); 115 *win = *sha++; 116 win += WINSTEPX(winStride); 117 *win = *sha++; 118 win += WINSTEPX(winStride); 119 *win = *sha++; 120 win += WINSTEPX(winStride); 121 122 *win = *sha++; 123 win += WINSTEPX(winStride); 124 *win = *sha++; 125 win += WINSTEPX(winStride); 126 *win = *sha++; 127 win += WINSTEPX(winStride); 128 *win = *sha++; 129 win += WINSTEPX(winStride); 130 131 *win = *sha++; 132 win += WINSTEPX(winStride); 133 *win = *sha++; 134 win += WINSTEPX(winStride); 135 *win = *sha++; 136 win += WINSTEPX(winStride); 137 *win = *sha++; 138 win += WINSTEPX(winStride); 139 } 140 141 while (sha < (shaLine + w)) { 142 *win = *sha++; 143 win += WINSTEPX(winStride); 144 } 145 146 y++; 147 shaLine += shaStride; 148 winLine += WINSTEPY(); 149 } 150 pbox++; 151 } /* nbox */ 152 }