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authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/programs/Xserver/miext/shadow/shplanar8.c
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
Diffstat (limited to 'nx-X11/programs/Xserver/miext/shadow/shplanar8.c')
-rw-r--r--nx-X11/programs/Xserver/miext/shadow/shplanar8.c174
1 files changed, 174 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/miext/shadow/shplanar8.c b/nx-X11/programs/Xserver/miext/shadow/shplanar8.c
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index 000000000..f1d87dc50
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+++ b/nx-X11/programs/Xserver/miext/shadow/shplanar8.c
@@ -0,0 +1,174 @@
+/*
+ * $XFree86: xc/programs/Xserver/miext/shadow/shplanar8.c,v 1.3 2001/05/29 04:54:13 keithp Exp $
+ *
+ * Copyright © 2000 Keith Packard
+ *
+ * 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 Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD 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.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include "scrnintstr.h"
+#include "windowstr.h"
+#include <X11/fonts/font.h>
+#include "dixfontstr.h"
+#include <X11/fonts/fontstruct.h>
+#include "mi.h"
+#include "regionstr.h"
+#include "globals.h"
+#include "gcstruct.h"
+#include "shadow.h"
+#include "fb.h"
+
+/*
+ * Expose 8bpp depth 4
+ */
+
+/*
+ * 32->8 conversion:
+ *
+ * 7 6 5 4 3 2 1 0
+ * A B C D E F G H
+ *
+ * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
+ * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
+ * m1 D x x x x x x x C x x x x x x x B x x x x x x x A x x x x x x x sha[0] << (7-(p))
+ * m2 x x x x H x x x x x x x G x x x x x x x F x x x x x x x E x x x sha[1] << (3-(p))
+ * m3 D C B A m1 & 0x80808080
+ * m4 H G F E m2 & 0x08080808
+ * m5 D H C G B F A E m3 | m4
+ * m6 D H C G B F m5 >> 9
+ * m7 D H C D G H B C F G A B E F m5 | m6
+ * m8 D H C D G H m7 >> 18
+ * m9 D H C D G H B C D F G H A B C D E F G H m7 | m8
+ */
+
+#define PL_SHIFT 8
+#define PL_UNIT (1 << PL_SHIFT)
+#define PL_MASK (PL_UNIT - 1)
+
+#if 0
+#define GetBits(p,o,d) { \
+ CARD32 m1,m2,m3,m4,m5,m6,m7,m8; \
+ m1 = sha[o] << (7 - (p)); \
+ m2 = sha[(o)+1] << (3 - (p)); \
+ m3 = m1 & 0x80808080; \
+ m4 = m2 & 0x08080808; \
+ m5 = m3 | m4; \
+ m6 = m5 >> 9; \
+ m7 = m5 | m6; \
+ m8 = m7 >> 18; \
+ d = m7 | m8; \
+}
+#else
+#define GetBits(p,o,d) { \
+ CARD32 m5,m7; \
+ m5 = ((sha[o] << (7 - (p))) & 0x80808080) | ((sha[(o)+1] << (3 - (p))) & 0x08080808); \
+ m7 = m5 | (m5 >> 9); \
+ d = m7 | (m7 >> 18); \
+}
+#endif
+
+void
+shadowUpdatePlanar4x8 (ScreenPtr pScreen,
+ shadowBufPtr pBuf)
+{
+ RegionPtr damage = &pBuf->damage;
+ PixmapPtr pShadow = pBuf->pPixmap;
+ int nbox = REGION_NUM_RECTS (damage);
+ BoxPtr pbox = REGION_RECTS (damage);
+ CARD32 *shaBase, *shaLine, *sha;
+ CARD8 s1, s2, s3, s4;
+ FbStride shaStride;
+ int scrBase, scrLine, scr;
+ int shaBpp;
+ int shaXoff, shaYoff; /* XXX assumed to be zero */
+ int x, y, w, h, width;
+ int i;
+ CARD32 *winBase = NULL, *win;
+ CARD32 winSize;
+ int plane;
+
+ fbGetStipDrawable (&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, shaYoff);
+ while (nbox--)
+ {
+ x = pbox->x1 * shaBpp;
+ y = pbox->y1;
+ w = (pbox->x2 - pbox->x1) * shaBpp;
+ h = pbox->y2 - pbox->y1;
+
+ w = (w + (x & PL_MASK) + PL_MASK) >> PL_SHIFT;
+ x &= ~PL_MASK;
+
+ scrLine = (x >> PL_SHIFT);
+ shaLine = shaBase + y * shaStride + (x >> FB_SHIFT);
+
+ while (h--)
+ {
+ for (plane = 0; plane < 4; plane++)
+ {
+ width = w;
+ scr = scrLine;
+ sha = shaLine;
+ winSize = 0;
+ scrBase = 0;
+ while (width) {
+ /* how much remains in this window */
+ i = scrBase + winSize - scr;
+ if (i <= 0 || scr < scrBase)
+ {
+ winBase = (CARD32 *) (*pBuf->window) (pScreen,
+ y,
+ (scr << 4) | (plane),
+ SHADOW_WINDOW_WRITE,
+ &winSize,
+ pBuf->closure);
+ if(!winBase)
+ return;
+ winSize >>= 2;
+ scrBase = scr;
+ i = winSize;
+ }
+ win = winBase + (scr - scrBase);
+ if (i > width)
+ i = width;
+ width -= i;
+ scr += i;
+
+ while (i--)
+ {
+ GetBits(plane,0,s1);
+ GetBits(plane,2,s2);
+ GetBits(plane,4,s3);
+ GetBits(plane,6,s4);
+ *win++ = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24);
+ sha += 8;
+ }
+ }
+ }
+ shaLine += shaStride;
+ y++;
+ }
+ pbox++;
+ }
+}
+