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

Branch : - branch - master - tag -

• Show log

  Commit

• Author : matthieu
  Date : 2022-11-06 17:49:17
  Hash : 3b0b5ae7
  Message : Update libXrender to version 0.9.11

• lib/libXrender/src/Tri.c

• /*
   *
   * Copyright © 2002 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_CONFIG_H
  #include <config.h>
  #endif
  #include "Xrenderint.h"
  
  void
  XRenderCompositeTriangles (Display		*dpy,
  			   int			op,
  			   Picture		src,
  			   Picture		dst,
  			    _Xconst XRenderPictFormat	*maskFormat,
  			   int			xSrc,
  			   int			ySrc,
  			   _Xconst XTriangle	*triangles,
  			   int			ntriangle)
  {
      XRenderExtDisplayInfo	*info = XRenderFindDisplay (dpy);
  
      RenderSimpleCheckExtension (dpy, info);
      LockDisplay(dpy);
      while (ntriangle)
      {
  	xRenderTrianglesReq	*req;
  	int			n;
  	long			len;
  
  	GetReq(RenderTriangles, req);
  	req->reqType = (CARD8) info->codes->major_opcode;
  	req->renderReqType = X_RenderTriangles;
  	req->op = (CARD8) op;
  	req->src = (CARD32) src;
  	req->dst = (CARD32) dst;
  	req->maskFormat = (CARD32) (maskFormat ? maskFormat->id : 0);
  	req->xSrc = (INT16) xSrc;
  	req->ySrc = (INT16) ySrc;
  	n = ntriangle;
  	len = ((long) n) * (SIZEOF (xTriangle) >> 2);
  	if (!dpy->bigreq_size && len > (dpy->max_request_size - req->length)) {
  	    n = (int) ((dpy->max_request_size - req->length) / (SIZEOF (xTriangle) >> 2));
  	    len = ((long)n) * (SIZEOF (xTriangle) >> 2);
  	}
  	SetReqLen (req, len, len);
  	len <<= 2;
  	DataInt32 (dpy, (_Xconst int *) triangles, len);
  	ntriangle -= n;
  	triangles += n;
      }
      UnlockDisplay(dpy);
      SyncHandle();
  }
  
  void
  XRenderCompositeTriStrip (Display		*dpy,
  			  int			op,
  			  Picture		src,
  			  Picture		dst,
  			  _Xconst XRenderPictFormat	*maskFormat,
  			  int			xSrc,
  			  int			ySrc,
  			  _Xconst XPointFixed	*points,
  			  int			npoint)
  {
      XRenderExtDisplayInfo	*info = XRenderFindDisplay (dpy);
  
      RenderSimpleCheckExtension (dpy, info);
      LockDisplay(dpy);
      while (npoint > 2)
      {
  	xRenderTriStripReq	*req;
  	int			n;
  	long			len;
  
  	GetReq(RenderTriStrip, req);
  	req->reqType = (CARD8) info->codes->major_opcode;
  	req->renderReqType = X_RenderTriStrip;
  	req->op = (CARD8) op;
  	req->src = (CARD32) src;
  	req->dst = (CARD32) dst;
  	req->maskFormat = (CARD32) (maskFormat ? maskFormat->id : 0);
  	req->xSrc = (INT16) xSrc;
  	req->ySrc = (INT16) ySrc;
  	n = npoint;
  	len = ((long) n) * (SIZEOF (xPointFixed) >> 2);
  	if (!dpy->bigreq_size && len > (dpy->max_request_size - req->length)) {
  	    n = (int) ((dpy->max_request_size - req->length) / (SIZEOF (xPointFixed) >> 2));
  	    len = ((long)n) * (SIZEOF (xPointFixed) >> 2);
  	}
  	SetReqLen (req, len, len);
  	len <<= 2;
  	DataInt32 (dpy, (_Xconst int *) points, len);
  	npoint -= (n - 2);
  	points += (n - 2);
      }
      UnlockDisplay(dpy);
      SyncHandle();
  }
  
  void
  XRenderCompositeTriFan (Display			*dpy,
  			int			op,
  			Picture			src,
  			Picture			dst,
  			_Xconst XRenderPictFormat	*maskFormat,
  			int			xSrc,
  			int			ySrc,
  			_Xconst XPointFixed	*points,
  			int			npoint)
  {
      XRenderExtDisplayInfo   *info = XRenderFindDisplay (dpy);
      _Xconst XPointFixed	    *first = points;
  
      RenderSimpleCheckExtension (dpy, info);
      LockDisplay(dpy);
      points++;
      npoint--;
      while (npoint > 1)
      {
  	xRenderTriFanReq	*req;
  	xPointFixed		*p;
  	int			n;
  	long			len;
  
  	GetReqExtra(RenderTriFan, SIZEOF (xPointFixed), req);
  	req->reqType = (CARD8) info->codes->major_opcode;
  	req->renderReqType = X_RenderTriFan;
  	req->op = (CARD8) op;
  	req->src = (CARD32) src;
  	req->dst = (CARD32) dst;
  	req->maskFormat = (CARD32) (maskFormat ? maskFormat->id : 0);
  	req->xSrc = (INT16) xSrc;
  	req->ySrc = (INT16) ySrc;
  	p = (xPointFixed *) (req + 1);
  	p->x = first->x;
  	p->y = first->y;
  	n = npoint;
  	len = ((long) n) * (SIZEOF (xPointFixed) >> 2);
  	if (!dpy->bigreq_size && len > (dpy->max_request_size - req->length)) {
  	    n = (int) ((dpy->max_request_size - req->length) / (SIZEOF (xPointFixed) >> 2));
  	    len = ((long)n) * (SIZEOF (xPointFixed) >> 2);
  	}
  	SetReqLen (req, len, len);
  	len <<= 2;
  	DataInt32 (dpy, (_Xconst int *) points, len);
  	npoint -= (n - 1);
  	points += (n - 1);
      }
      UnlockDisplay(dpy);
      SyncHandle();
  }