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revision 1.199 by tjl, Sun Dec 1 21:16:50 2002 UTC revision 1.200 by tjl, Sun Dec 1 21:20:45 2002 UTC
# Line 737  w.r.t.~the repeating unit. Line 737  w.r.t.~the repeating unit.
737    
738  On the NV25 architecture,  On the NV25 architecture,
739  the texture accesses can be customized further by the use of texture  the texture accesses can be customized further by the use of texture
740  shading: the texture coordinates in a texture access can be made  shading: the texture coordinates used by a texture unit can be made
741  to depend on the result of a previous texture access.  to depend on the result of a previous texture unit.
742  This can create a large variety of shapes, as seen already  This can be used to create a large variety of shapes\cite{perlin-noise-intro}.
743  in Perlin's work\cite{perlin-noise-intro}.  % So far, we have only used offset textures with random
744  So far, we have only used offset textures with random  % offset matrices, but even they
745  offset matrices, but even they  % do improve the quality of the output.
746  do improve the quality of the output.  % The textures used for offsetting are the same as the
747  The textures used for offsetting are the same as the  % basic textures, but loaded as higher precision two-component HILO textures.
 basic textures, but loaded as higher precision two-component HILO textures.  
748    
749    
750  \subsection{Register combiners}  \subsection{Register combiners}

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