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revision 1.186 by tjl, Sun Dec 1 20:04:33 2002 UTC revision 1.187 by tjl, Sun Dec 1 20:07:39 2002 UTC
# Line 524  procedural geometry. Line 524  procedural geometry.
524  % % How is it used?  % % How is it used?
525  % % XXX  % % XXX
526    
527    We have two rendering modes which make different
528    tradeoffs between these goals: direct, where
529    the same small basis textures are used, which takes 2-3 passes
530    with all texture units enabled, and
531    pre-rendered, where the repeating unit of the texture
532    is pre-rendered into a larger texture of its own, where rendering
533    takes 1 pass with one texture unit.
534    To achieve a satisfactory image quality in zooming
535    with the latter approach,
536    a relatively large texture has to be used.
537    
538  We have found that setting the parameters hierarchically  We have found that setting the parameters hierarchically
539  produces the best results: the parameters for different passes  produces the best results: the parameters for different passes
540  should depend on hyperparameters randomly selected for entire paper.  should depend on hyperparameters randomly selected for entire paper.
# Line 541  See text for explanations. Line 552  See text for explanations.
552    
553  %Performance: zoomability, memory, speed  %Performance: zoomability, memory, speed
554    
 \subsection{Resource usage}  
   
 In hardware rendering, the use of resources is critical.  
 The two relevant types of resources here are texture memory  
 and rendering time.  
   
 We have two rendering modes which make different  
 tradeoffs between these goals: direct, where  
 the same small basis textures are used, which takes 2-3 passes  
 with all texture units enabled, and  
 pre-rendered, where the repeating unit of the texture  
 is pre-rendered into a larger texture of its own, where rendering  
 takes 1 pass with one texture unit.  
 To achieve a satisfactory image quality in zooming  
 with the latter approach,  
 a relatively large texture has to be used.  
   
555    
556  \subsection{Colors}  \subsection{Colors}
557    

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