[xorg-bugzilla-noise] [Bug 1030] New damage sprite is duplicated when scrolling (XCopyArea)

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https://freedesktop.org/bugzilla/show_bug.cgi?id=1030        
   




------- Additional Comments From krh at bitplanet.net  2004-08-11 12:21 -------
These files call ValidateSource

  afb/afbbitblt.c:199
  cfb/cfbbitblt.c:117
  cfb/cfbbitblt.c:380
  cfb16/cfbbitblt.c:117
  cfb16/cfbbitblt.c:380
  cfb24/cfbbitblt.c:117
  cfb24/cfbbitblt.c:380
  cfb32/cfbbitblt.c:117
  cfb32/cfbbitblt.c:380
  fb/fbcopy.c:420
  hw/xfree86/xaa/xaaBitBlt.c:57
  hw/xfree86/xf4bpp/ppcCpArea.c:267
  ilbm/ilbmbitblt.c:204
  iplan2p4/iplbitblt.c:94
  mfb/mfbbitblt.c:169

What would be the problem in changing those callers to always call
ValidateSource, regardless of wether src != dst?  

Is it also called from closed source drivers that we can't change?  Or is it a
problem to change the semantics of ValidateSource?
        
   
   
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