| 1 | /*
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| 2 | * Copyright © 2004 Philip Blundell
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| 3 | *
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| 4 | * Permission to use, copy, modify, distribute, and sell this software and its
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| 5 | * documentation for any purpose is hereby granted without fee, provided that
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| 6 | * the above copyright notice appear in all copies and that both that
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| 7 | * copyright notice and this permission notice appear in supporting
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| 8 | * documentation, and that the name of Philip Blundell not be used in
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| 9 | * advertising or publicity pertaining to distribution of the software without
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| 10 | * specific, written prior permission. Philip Blundell makes no
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| 11 | * representations about the suitability of this software for any purpose. It
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| 12 | * is provided "as is" without express or implied warranty.
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| 13 | *
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| 14 | * PHILIP BLUNDELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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| 16 | * EVENT SHALL PHILIP BLUNDELL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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| 17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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| 18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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| 19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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| 20 | * PERFORMANCE OF THIS SOFTWARE.
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| 21 | */
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| 22 |
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| 23 | #include <X11/X.h>
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| 24 | #include "scrnintstr.h"
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| 25 | #include "windowstr.h"
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| 26 | #include "dixfontstr.h"
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| 27 | #include "mi.h"
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| 28 | #include "regionstr.h"
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| 29 | #include "globals.h"
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| 30 | #include "gcstruct.h"
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| 31 | #include "shadow.h"
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| 32 | #include "fb.h"
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| 33 |
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| 34 | #if ROTATE == 270
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| 35 |
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| 36 | #define WINSTEPX(stride) (stride)
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| 37 | #define WINSTART(x,y) (((pScreen->height - 1) - y) + (x * winStride))
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| 38 | #define WINSTEPY() -1
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| 39 |
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| 40 | #elif ROTATE == 90
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| 41 |
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| 42 | #define WINSTEPX(stride) (-stride)
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| 43 | #define WINSTEPY() 1
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| 44 | #define WINSTART(x,y) (((pScreen->width - 1 - x) * winStride) + y)
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| 45 |
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| 46 | #else
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| 47 |
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| 48 | #error This rotation is not supported here
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| 49 |
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| 50 | #endif
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| 51 |
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| 52 | #ifdef __arm__
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| 53 | #define PREFETCH
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| 54 | #endif
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| 55 |
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| 56 | void
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| 57 | FUNC (ScreenPtr pScreen,
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| 58 | shadowBufPtr pBuf);
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| 59 |
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| 60 | void
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| 61 | FUNC (ScreenPtr pScreen,
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| 62 | shadowBufPtr pBuf)
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| 63 | {
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| 64 | RegionPtr damage = shadowDamage(pBuf);
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| 65 | PixmapPtr pShadow = pBuf->pPixmap;
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| 66 | int nbox = RegionNumRects (damage);
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| 67 | BoxPtr pbox = RegionRects (damage);
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| 68 | FbBits *shaBits;
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| 69 | Data *shaBase, *shaLine, *sha;
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| 70 | FbStride shaStride, winStride;
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| 71 | int shaBpp;
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| 72 | int shaXoff, shaYoff; /* XXX assumed to be zero */
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| 73 | int x, y, w, h;
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| 74 | Data *winBase, *win, *winLine;
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| 75 | CARD32 winSize;
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| 76 |
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| 77 | fbGetDrawable (&pShadow->drawable, shaBits, shaStride, shaBpp, shaXoff, shaYoff);
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| 78 | shaBase = (Data *) shaBits;
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| 79 | shaStride = shaStride * sizeof (FbBits) / sizeof (Data);
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| 80 |
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| 81 | winBase = (Data *) (*pBuf->window) (pScreen, 0, 0,
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| 82 | SHADOW_WINDOW_WRITE,
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| 83 | &winSize, pBuf->closure);
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| 84 | winStride = (Data *) (*pBuf->window) (pScreen, 1, 0,
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| 85 | SHADOW_WINDOW_WRITE,
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| 86 | &winSize, pBuf->closure) - winBase;
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| 87 |
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| 88 | while (nbox--)
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| 89 | {
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| 90 | x = pbox->x1;
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| 91 | y = pbox->y1;
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| 92 | w = (pbox->x2 - pbox->x1);
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| 93 | h = pbox->y2 - pbox->y1;
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| 94 |
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| 95 | shaLine = shaBase + (y * shaStride) + x;
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| 96 | #ifdef PREFETCH
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| 97 | __builtin_prefetch (shaLine);
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| 98 | #endif
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| 99 | winLine = winBase + WINSTART(x, y);
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| 100 |
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| 101 | while (h--)
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| 102 | {
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| 103 | sha = shaLine;
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| 104 | win = winLine;
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| 105 |
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| 106 | while (sha < (shaLine + w - 16))
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| 107 | {
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| 108 | #ifdef PREFETCH
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| 109 | __builtin_prefetch (sha + shaStride);
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| 110 | #endif
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| 111 | *win = *sha++;
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| 112 | win += WINSTEPX(winStride);
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| 113 | *win = *sha++;
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| 114 | win += WINSTEPX(winStride);
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| 115 | *win = *sha++;
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| 116 | win += WINSTEPX(winStride);
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| 117 | *win = *sha++;
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| 118 | win += WINSTEPX(winStride);
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| 119 |
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| 120 | *win = *sha++;
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| 121 | win += WINSTEPX(winStride);
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| 122 | *win = *sha++;
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| 123 | win += WINSTEPX(winStride);
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| 124 | *win = *sha++;
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| 125 | win += WINSTEPX(winStride);
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| 126 | *win = *sha++;
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| 127 | win += WINSTEPX(winStride);
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| 128 |
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| 129 | *win = *sha++;
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| 130 | win += WINSTEPX(winStride);
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| 131 | *win = *sha++;
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| 132 | win += WINSTEPX(winStride);
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| 133 | *win = *sha++;
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| 134 | win += WINSTEPX(winStride);
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| 135 | *win = *sha++;
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| 136 | win += WINSTEPX(winStride);
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| 137 |
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| 138 | *win = *sha++;
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| 139 | win += WINSTEPX(winStride);
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| 140 | *win = *sha++;
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| 141 | win += WINSTEPX(winStride);
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| 142 | *win = *sha++;
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| 143 | win += WINSTEPX(winStride);
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| 144 | *win = *sha++;
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| 145 | win += WINSTEPX(winStride);
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| 146 | }
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| 147 |
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| 148 | while (sha < (shaLine + w))
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| 149 | {
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| 150 | *win = *sha++;
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| 151 | win += WINSTEPX(winStride);
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| 152 | }
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| 153 |
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| 154 | y++;
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| 155 | shaLine += shaStride;
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| 156 | winLine += WINSTEPY();
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| 157 | }
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| 158 | pbox++;
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| 159 | } /* nbox */
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| 160 | }
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