IABSD.fr/xenocara/lib/libXrender/src/FillRect.c

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• Author : matthieu
  Date : 2006-11-25 17:54:58
  Hash : bb1ca957
  Message : import from X.Org 7.2RC1

• lib/libXrender/src/FillRect.c

• /*
   *
   * Copyright © 2000 SuSE, Inc.
   *
   * 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 SuSE not be used in advertising or
   * publicity pertaining to distribution of the software without specific,
   * written prior permission.  SuSE makes no representations about the
   * suitability of this software for any purpose.  It is provided "as is"
   * without express or implied warranty.
   *
   * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
   * 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.
   *
   * Author:  Keith Packard, SuSE, Inc.
   */
  
  #ifdef HAVE_CONFIG_H
  #include <config.h>
  #endif
  #include "Xrenderint.h"
  
  /* precompute the maximum size of batching request allowed */
  
  #define size (SIZEOF(xRenderFillRectanglesReq) + FRCTSPERBATCH * SIZEOF(xRectangle))
  
  void
  XRenderFillRectangle (Display	    *dpy,
  		      int	    op,
  		      Picture	    dst,
  		      _Xconst XRenderColor  *color,
  		      int	    x,
  		      int	    y,
  		      unsigned int  width,
  		      unsigned int  height)
  {
      XRenderExtDisplayInfo		*info = XRenderFindDisplay (dpy);
      xRectangle			*rect;
      xRenderFillRectanglesReq	*req;
  #ifdef MUSTCOPY
      xRectangle			rectdata;
      long			len = SIZEOF(xRectangle);
  
      rect = &rectdata;
  #endif /* MUSTCOPY */
  
      RenderSimpleCheckExtension (dpy, info);
      LockDisplay(dpy);
  
      req = (xRenderFillRectanglesReq *) dpy->last_req;
      /* if same as previous request, with same drawable, batch requests */
      if (req->reqType == info->codes->major_opcode &&
  	req->renderReqType == X_RenderFillRectangles &&
  	req->op == op &&
  	req->dst == dst &&
  	req->color.red == color->red &&
  	req->color.green == color->green &&
  	req->color.blue == color->blue &&
  	req->color.alpha == color->alpha &&
  	dpy->bufptr + SIZEOF(xRectangle) <= dpy->bufmax &&
  	(char *)dpy->bufptr - (char *)req < size)
      {
  	req->length += SIZEOF(xRectangle) >> 2;
  #ifndef MUSTCOPY
  	rect = (xRectangle *) dpy->bufptr;
  	dpy->bufptr += SIZEOF(xRectangle);
  #endif /* not MUSTCOPY */
      }
      else 
      {
  	GetReqExtra(RenderFillRectangles, SIZEOF(xRectangle), req);
  	
  	req->reqType = info->codes->major_opcode;
  	req->renderReqType = X_RenderFillRectangles;
  	req->op = op;
  	req->dst = dst;
  	req->color.red = color->red;
  	req->color.green = color->green;
  	req->color.blue = color->blue;
  	req->color.alpha = color->alpha;
  	
  #ifdef MUSTCOPY
  	dpy->bufptr -= SIZEOF(xRectangle);
  #else
  	rect = (xRectangle *) NEXTPTR(req,xRenderFillRectanglesReq);
  #endif /* MUSTCOPY */
      }
      rect->x = x;
      rect->y = y;
      rect->width = width;
      rect->height = height;
  
  #ifdef MUSTCOPY
      Data (dpy, (char *) rect, len);
  #endif /* MUSTCOPY */
      UnlockDisplay(dpy);
      SyncHandle();
  }