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/*
* Copyright © 2004 Philip Blundell
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Philip Blundell not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Philip Blundell makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* PHILIP BLUNDELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL PHILIP BLUNDELL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <X11/X.h>
#include "scrnintstr.h"
#include "windowstr.h"
#include "dixfontstr.h"
#include "mi.h"
#include "regionstr.h"
#include "globals.h"
#include "gcstruct.h"
#include "shadow.h"
#include "fb.h"
#if ROTATE == 270
#define WINSTEPX(stride) (stride)
#define WINSTART(x,y) (((pScreen->height - 1) - y) + (x * winStride))
#define WINSTEPY() -1
#elif ROTATE == 90
#define WINSTEPX(stride) (-stride)
#define WINSTEPY() 1
#define WINSTART(x,y) (((pScreen->width - 1 - x) * winStride) + y)
#else
#error This rotation is not supported here
#endif
#ifdef __arm__
#define PREFETCH
#endif
void
FUNC (ScreenPtr pScreen,
shadowBufPtr pBuf);
void
FUNC (ScreenPtr pScreen,
shadowBufPtr pBuf)
{
RegionPtr damage = shadowDamage(pBuf);
PixmapPtr pShadow = pBuf->pPixmap;
int nbox = REGION_NUM_RECTS (damage);
BoxPtr pbox = REGION_RECTS (damage);
FbBits *shaBits;
Data *shaBase, *shaLine, *sha;
FbStride shaStride, winStride;
int shaBpp;
int shaXoff, shaYoff; /* XXX assumed to be zero */
int x, y, w, h;
Data *winBase, *win, *winLine;
CARD32 winSize;
fbGetDrawable (&pShadow->drawable, shaBits, shaStride, shaBpp, shaXoff, shaYoff);
shaBase = (Data *) shaBits;
shaStride = shaStride * sizeof (FbBits) / sizeof (Data);
winBase = (Data *) (*pBuf->window) (pScreen, 0, 0,
SHADOW_WINDOW_WRITE,
&winSize, pBuf->closure);
winStride = (Data *) (*pBuf->window) (pScreen, 1, 0,
SHADOW_WINDOW_WRITE,
&winSize, pBuf->closure) - winBase;
while (nbox--)
{
x = pbox->x1;
y = pbox->y1;
w = (pbox->x2 - pbox->x1);
h = pbox->y2 - pbox->y1;
shaLine = shaBase + (y * shaStride) + x;
#ifdef PREFETCH
__builtin_prefetch (shaLine);
#endif
winLine = winBase + WINSTART(x, y);
while (h--)
{
sha = shaLine;
win = winLine;
while (sha < (shaLine + w - 16))
{
#ifdef PREFETCH
__builtin_prefetch (sha + shaStride);
#endif
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
*win = *sha++;
win += WINSTEPX(winStride);
}
while (sha < (shaLine + w))
{
*win = *sha++;
win += WINSTEPX(winStride);
}
y++;
shaLine += shaStride;
winLine += WINSTEPY();
}
pbox++;
} /* nbox */
}
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