IABSD.fr/xenocara/xserver/fb/fbpoint.c

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• Author : matthieu
  Date : 2007-11-24 17:55:21
  Hash : b14d6de7
  Message : xserver 1.4

• xserver/fb/fbpoint.c

• /*
   * Copyright © 1998 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 "fb.h"
  
  typedef void	(*FbDots)  (FbBits	*dst,
  			    FbStride    dstStride,
  			    int		dstBpp,
  			    BoxPtr	pBox,
  			    xPoint	*pts,
  			    int		npt,
  			    int		xorg,
  			    int		yorg,
  			    int		xoff,
  			    int		yoff,
  			    FbBits	and,
  			    FbBits	xor);
  
  void
  fbDots (FbBits	    *dstOrig,
  	FbStride    dstStride,
  	int	    dstBpp,
  	BoxPtr	    pBox,
  	xPoint	    *pts,
  	int	    npt,
  	int	    xorg,
  	int	    yorg,
  	int	    xoff,
  	int	    yoff,
  	FbBits	    andOrig,
  	FbBits	    xorOrig)
  {
      FbStip	*dst = (FbStip *) dstOrig;
      int		x1, y1, x2, y2;
      int		x, y;
      FbStip	*d;
      FbStip	and = andOrig;
      FbStip	xor = xorOrig;
  
      dstStride = FbBitsStrideToStipStride (dstStride);
      x1 = pBox->x1;
      y1 = pBox->y1;
      x2 = pBox->x2;
      y2 = pBox->y2;
      while (npt--)
      {
  	x = pts->x + xorg;
  	y = pts->y + yorg;
  	pts++;
  	if (x1 <= x && x < x2 && y1 <= y && y < y2)
  	{
  	    x = (x + xoff) * dstBpp;
  	    d = dst + ((y + yoff) * dstStride) + (x >> FB_STIP_SHIFT);
  	    x &= FB_STIP_MASK;
  #ifdef FB_24BIT
  	    if (dstBpp == 24)
  	    {
  		FbStip	leftMask, rightMask;
  		int	n, rot;
  		FbStip	andT, xorT;
  		
  		rot = FbFirst24Rot (x);
  		andT = FbRot24Stip(and,rot);
  		xorT = FbRot24Stip(xor,rot);
  		FbMaskStip (x, 24, leftMask, n, rightMask);
  		if (leftMask)
  		{
  		    WRITE(d, FbDoMaskRRop (READ(d), andT, xorT, leftMask));
  		    andT = FbNext24Stip(andT);
  		    xorT = FbNext24Stip(xorT);
  		    d++;
  		}
  		if (rightMask)
  		    WRITE(d, FbDoMaskRRop(READ(d), andT, xorT, rightMask));
  	    }
  	    else
  #endif
  	    {
  		FbStip	mask;
  		mask = FbStipMask(x, dstBpp);
  		WRITE(d, FbDoMaskRRop (READ(d), and, xor, mask));
  	    }
  	}
      }
  }
  
  void
  fbPolyPoint (DrawablePtr    pDrawable,
  	     GCPtr	    pGC,
  	     int	    mode,
  	     int	    nptInit,
  	     xPoint	    *pptInit)
  {
      FbGCPrivPtr pPriv = fbGetGCPrivate (pGC);
      RegionPtr	pClip = fbGetCompositeClip(pGC);
      FbBits	*dst;
      FbStride	dstStride;
      int		dstBpp;
      int		dstXoff, dstYoff;
      FbDots	dots;
      FbBits	and, xor;
      xPoint	*ppt;
      int		npt;
      BoxPtr	pBox;
      int		nBox;
      
      /* make pointlist origin relative */
      ppt = pptInit;
      npt = nptInit;
      if (mode == CoordModePrevious)
      {
  	npt--;
  	while(npt--)
  	{
  	    ppt++;
  	    ppt->x += (ppt-1)->x;
  	    ppt->y += (ppt-1)->y;
  	}
      }
      fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
      and = pPriv->and;
      xor = pPriv->xor;
      dots = fbDots;
  #ifndef FBNOPIXADDR
      switch (dstBpp) {
      case 8:	dots = fbDots8; break;
      case 16:    dots = fbDots16; break;
  #ifdef FB_24BIT
      case 24:    dots = fbDots24; break;
  #endif
      case 32:    dots = fbDots32; break;
      }
  #endif
      for (nBox = REGION_NUM_RECTS (pClip), pBox = REGION_RECTS (pClip);
  	 nBox--; pBox++)
  	(*dots) (dst, dstStride, dstBpp, pBox, pptInit, nptInit, 
  		 pDrawable->x, pDrawable->y, dstXoff, dstYoff, and, xor);
      fbFinishAccess (pDrawable);
  }