fb/fbsetsp.c

   1 /*
   2  * Copyright © 1998 Keith Packard
   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 Keith Packard not be used in
   9  * advertising or publicity pertaining to distribution of the software without
  10  * specific, written prior permission.  Keith Packard 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  * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL KEITH PACKARD 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 #ifdef HAVE_DIX_CONFIG_H
  24 #include <dix-config.h>
  25 #endif
  26
  27 #include "fb.h"
  28
  29 void
  30 fbSetSpans(DrawablePtr pDrawable,
  31            GCPtr pGC,
  32            char *src, DDXPointPtr ppt, int *pwidth, int nspans, int fSorted)
  33 {
  34     FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
  35     RegionPtr pClip = fbGetCompositeClip(pGC);
  36     FbBits *dst, *d, *s;
  37     FbStride dstStride;
  38     int dstBpp;
  39     int dstXoff, dstYoff;
  40     BoxPtr pbox;
  41     int n;
  42     int xoff;
  43     int x1, x2;
  44
  45     if (pDrawable->bitsPerPixel != BitsPerPixel(pDrawable->depth)) {
  46         fb24_32SetSpans(pDrawable, pGC, src, ppt, pwidth, nspans, fSorted);
  47         return;
  48     }
  49     fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
  50     while (nspans--) {
  51         d = dst + (ppt->y + dstYoff) * dstStride;
  52         xoff = (int) (((long) src) & (FB_MASK >> 3));
  53         s = (FbBits *) (src - xoff);
  54         xoff <<= 3;
  55         n = RegionNumRects(pClip);
  56         pbox = RegionRects(pClip);
  57         while (n--) {
  58             if (pbox->y1 > ppt->y)
  59                 break;
  60             if (pbox->y2 > ppt->y) {
  61                 x1 = ppt->x;
  62                 x2 = x1 + *pwidth;
  63                 if (pbox->x1 > x1)
  64                     x1 = pbox->x1;
  65                 if (pbox->x2 < x2)
  66                     x2 = pbox->x2;
  67                 if (x1 < x2)
  68                     fbBlt((FbBits *) s,
  69                           0,
  70                           (x1 - ppt->x) * dstBpp + xoff,
  71                           d,
  72                           dstStride,
  73                           (x1 + dstXoff) * dstBpp,
  74                           (x2 - x1) * dstBpp,
  75                           1, pGC->alu, pPriv->pm, dstBpp, FALSE, FALSE);
  76             }
  77         }
  78         src += PixmapBytePad(*pwidth, pDrawable->depth);
  79         ppt++;
  80         pwidth++;
  81     }
  82     fbValidateDrawable(pDrawable);
  83     fbFinishAccess(pDrawable);
  84 }