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revision 1.59 by jvk, Fri Nov 22 12:35:55 2002 UTC revision 1.60 by tjl, Fri Nov 22 12:43:43 2002 UTC
# Line 321  in XXX ms on a GeForce4 ... Line 321  in XXX ms on a GeForce4 ...
321  }  }
322  \end{figure*}  \end{figure*}
323    
 \section{Hardware-accelerated implementation}  
   
324  It is important that the background can be zoomed to different resolutions.  It is important that the background can be zoomed to different resolutions.
325  However, we are currently  However, we are currently
326  not trying to attain infinite zoomability\cite{furnas00infinity},  not trying to attain infinite zoomability\cite{furnas00infinity},
327  only the range of zooming that would be reasonable for a single PDF document.  but only the more modest goal of zooming within a range
328    that would be reasonable for a single PDF document, i.e. approximately 100-fold
329    difference between mininum and maximum zoom.
330    This is in line with our
331    intended use, since it would be unreasonable to expect a texture to be recognizable
332    if a sub-pixel area were zoomed to the full screen.
333    Of course, methods such as the ones presented in \cite{furnas00infinity} could be used
334    to allow the unique background to look similar at different scales; however,
335    this would remove the use of the texture as a cue of scale.
336    
337  For zooming, it would be possible to use a solution such as the ones in \cite{furnas00infinity},  \section{Hardware-accelerated implementation}
 but...  
338    
339  In hardware rendering, the use of resources is critical  In hardware rendering, the use of resources is critical
340  The two relevant types of resources here are texture memory  The two relevant types of resources here are texture memory
341  and  and rendering time.
342    
343    
344    
345    

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