Forgot to include this file in previous patch

1 files changed, 162 insertions, 0 deletions

diff --git a/miext/shadow/shrotpackYX.h b/miext/shadow/shrotpackYX.h
new file mode 100644
index 000000000..f51da2f65
--- /dev/null
+++ b/miext/shadow/shrotpackYX.h
@@ -0,0 +1,162 @@
+/*
+ * $Id$
+ *
+ * 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 */
+}