[Bf-blender-cvs] CVS commit: blender/source/blender/renderconverter/intern convertBlenderScene.c blender/source/blender/render/intern/source renderHelp.c

[Ton Roosendaal]

ton (Ton Roosendaal) 2004/05/29 18:14:34 CEST

  Modified files:
    blender/source/blender/renderconverter/intern 
                                                  convertBlenderScene.c 
    blender/source/blender/render/intern/source renderHelp.c 
  
  Log:
  Recoded the methods how normals get corrected and flipped during render
  conversion. Old method tried to solve it per object, detecting a flipped
  matrix. Since we have displacemapping and raytracing this is too inaccurate.
  Also, flipping normals should alsways result i correct flipped vertex-
  normals too.
  
  Solution is to completely recalcuate the 'puno' (vertex normal) flags in
  renderHelp.c now (set_normal_flags). The face normals themselves are not
  flipped until that stage.
  
  Second major improvement involves the calculation of correct splitted
  triangles, when a quad is not flat. It now creates triangles based on the
  vertex normals, which have actual information on surrounding geometry, thus
  resulting in much smoother results.
  Without this you get errors in ray-shadow, with light shining almost
  parallel to a face. But again, displacement mapping improves with it too.
  
  Third fix is that by removing normal flipping from displace code the result
  is much better now.
  
  Revision  Changes    Path
  1.66      +28 -112   blender/source/blender/renderconverter/intern/convertBlenderScene.c
    <http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/renderconverter/intern/convertBlenderScene.c.diff?r1=1.65&r2=1.66&cvsroot=bf-blender>
  1.7       +17 -16    blender/source/blender/render/intern/source/renderHelp.c
    <http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/render/intern/source/renderHelp.c.diff?r1=1.6&r2=1.7&cvsroot=bf-blender>