Using Chromium to extract a scenegraph

Hi All,

  Does anyone have pointers to such work/SPUs?
  For example, to convert a 'frame' of some OpenGL-program to 3DSMax 
format, .OBJ format, VRML, etc..

  It seems like a fairly obvious use, but I can't think of any work like 
this.. maybe there are some theoretic limitations?
  I suppose in the limit this is something like decompilation.

  There is of course file-output.  And the GLDB project which
can "capture" an object via a stream-query-language (it hasn't
released any software yet though - just the SIGGRAPH'05 paper at
http://www.cs.jhu.edu/~jab/gldb.pdf), and my own CRFreezer stuff.  But 
none of these (AFAIK) attempt to deduce the structure of an entire scene 
from the GL stream.
  One could look e.g. for gl{Push,Pop}Matrix(), gl{Begin,End}(), 
gl{Push,Pop}Attrib(), .. as markers for subtrees in a scenegraph.
To extract objects one could look for coincident vertices (and/or use 
Chromium's bounding-boxes).

thanks,
Daniel Faken




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