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Thread: Lighting without Light

  1. #16
    Super Member Captain Obvious's Avatar
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    So basically, it means you can take a node that doesn't have a position or normal input, plug it into the Replace Spot node and transform the current spot being shaded?
    Are my spline guides showing?

  2. #17
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    Yes,
    I made also some testing with Extrabuffer nodes,
    storing Spot position & normal in Store ExtraBuffer
    for object in scene,
    output these buffers in Pixel Image Filter node editor,
    and using Replace Spot node to apply a procedural texture
    on the 3D object in a post process.

    Denis.

  3. #18
    Quote Originally Posted by oldtekerr
    Xsi has this feature. Captain, High mes and directional occlusion is a great idea. I just watched some training for xsi that used that technique with great results...
    SG_AmbOcc node has always had directional occlusion. What Denis' node configurations does is to simulate a diffuse model (lambertian) without lights. Which is interesting...



    Gerardo

  4. #19
    Super Member Captain Obvious's Avatar
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    One problem with this lighting method is that it's a pain in the arse to set up, especially for scenes that have already been textured. And once it has been set up, changing it is a pain if you have a lot of surfaces. So I had this idea!

    Suppose there was a Shader (as in a non-nodal shader) that, whenever a spot is shaded, basically grabs the Diffuse Shading from a surface of your choice (keeping the spot info unmodified, obviously), and uses that as illumination. So if you have a regular, non-nodal surface with the "Grab Shading" non-nodal shader set to grab illumination from a different surface, that surface will then sample the same point but with the target surface's diffuse shading output, and use that as diffuse illumination.

    That way, you could have one surface with the occlusion lighting applied, and just add the "Grab Shading" shader to all the other surfaces, maintaining old texturing.

    Would such a thing be possible within LW's SDK?
    Are my spline guides showing?

  5. #20
    Super Member Captain Obvious's Avatar
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    Maybe I'm just confused, but I can't find the "replace spot" node in the DP_Kit.
    Are my spline guides showing?

  6. #21
    It's in processing tab.



    Gerardo

  7. #22
    Super Member Captain Obvious's Avatar
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    I can't find it
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Are my spline guides showing?

  8. #23
    It seems it's not the lastest version of DPKit.
    Btw, you should install the ExtraBuffers nodes (they are in Processing tab too, but aren't compiled in DPKit plugin).



    Gerardo

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