nanogui: Thread: [Nano-X] diff.region3.gz

>     i try to use use the Wrapper  api of Region .but actually it alway dump
> ,when i use every original sample. i think some pointer operation may have
> problem.but i don't know where.do you find the problems .
> and ,i think it maybe should add the following code

	I've added tanghao's fix and changed MWBOOL and MWCOORD to
	GR_BOOL and GR_COORD.

	Also, I've added the file devrgn2.c which contains functions
	for implementing GdCreatePolygonRegion. 
	Again, it only compiled, not been tested.

	Please get the new patch from
	http://hpc.ee.ntu.edu.tw/~murphy/diff.region3.gz

	Need to find out why program crashes after calling GrSetGCRegion.

Murphy

: Please get the new patch from
: http://hpc.ee.ntu.edu.tw/~murphy/diff.region3.gz
: 
: Need to find out why program crashes after calling GrSetGCRegion.

This patch looks well done.  I'll test it tonight and try to
find the problem.

Regards,

Greg

hi ,
    i think i find where the problem is ,
    and in the file "srvutil.c",function GsPrepareDrawing.
the code segment Murphy added:
regionp = GsFindRegion(gcp->regionid);
GdSetClipRegion(pp->psd, regionp->pregion);

may should change to 

  regionp = GsFindRegion(gcp->regionid);
  if(regionp!=NULL)
  {
#if DYNAMICREGIONS
            MWCLIPREGION * clipregion;
   clipregion = GdAllocRectRegion(regionp->pregion->extents.left,regionp->pregion->extents.top,
     regionp->pregion->extents.right, regionp->pregion->extents.bottom);
   if(wp)
   {
    GdSetClipRegion(wp->psd,clipregion);
          }
   else
   {
    GdSetClipRegion(pp->psd,clipregion);
   }  
#else

       MWCLIPRECT cliprect;
         cliprect.x = regionp->pregion->extents.left;
         cliprect.y = regionp->pregion->extents.top;
         cliprect.width = regionp->pregion->extents.right-regionp->pregion->extents.left;
         cliprect.height = regionp->pregion->extents.bottom-regionp->pregion->extents.top  
 if(wp)
          GdSetClipRects(wp->psd, 1, &cliprect);
 else
    GdSetClipRects(pp->psd, 1, &cliprect);

#endif
  }
   
the crash is because  when DYNAMICREGIONS is defined,
it should be Allocate a new Region.
    
            Regards
            
                            Tanghao
 
> Need to find out why program crashes after calling GrSetGCRegion.
> 
> Murphy
> 
> 
> 
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