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  • VRayFur grass

    fast and simple. easy to control through procedurals. i'm trying to create sort of an universal grass solution with vray fur that will work in many scenarios. please tell me what you think and i'll try to improve from there.
    Attached Files
    Marcin Piotrowski
    youtube

  • #2
    some close-ups:
    Attached Files
    Marcin Piotrowski
    youtube

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    • #3
      It's looking very good. Perhaps the individual blades need to be rotated a little more randomly perhaps?

      To me it looks like someone has swept the grass with a broom because the blades "flow" in the same direction.
      Maya 2020/2022
      Win 10x64
      Vray 5

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      • #4
        good point. vray fur strands are always flat and facing the camera but a way to obtain this is making some of the grass blades very thin. illusion but i think it will work. thx.
        Marcin Piotrowski
        youtube

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        • #5
          or if you are referring to those patches of grass (not the rotation of grass blades) - it's controled through initial direction rgb map
          Marcin Piotrowski
          youtube

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          • #6
            Originally posted by piotrus3333 View Post
            fast and simple. easy to control through procedurals. i'm trying to create sort of an universal grass solution with vray fur that will work in many scenarios. please tell me what you think and i'll try to improve from there.
            I was under the impression vrayfur is a very slow to render..
            This is a signature.

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            • #7
              depends on what you're doing with it. as far as my experience with grass goes (autograss plugin, scattered vray proxy geometry) this one is fast and simple.
              Marcin Piotrowski
              youtube

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              • #8
                another look. just 5 min worth of adjustments.

                Click image for larger version

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                Marcin Piotrowski
                youtube

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                • #9
                  It's looking good!
                  i'm definitely going to keep an eye in this post!
                  los campeones no nacen, se hacen...

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                  • #10
                    I'm back in the realm of neat lawn. something more common in archviz.
                    I worked a bit more on reflections as well. this one has only plain color for diffuse.
                    composite maps (direction, length) surely don't help with rendertimes but those are in fact better than I expected.
                    and its easy to use layers as presets - on/off - to get predefined look without messing with fur settings.

                    Click image for larger version

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                    what I'm still working on is fur in clumps like this:
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                    those are distributed with bercon tiles so way too regular for grass.
                    Marcin Piotrowski
                    youtube

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                    • #11
                      Originally posted by piotrus3333 View Post

                      [ATTACH=CONFIG]21493[/ATTACH]

                      [ATTACH=CONFIG]21494[/ATTACH]

                      [ATTACH=CONFIG]21495[/ATTACH]

                      .
                      Looking good. Can you show us a wireframe of your distribution object?
                      Kind Regards,
                      Morne

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                      • #12
                        nothing interesting there:
                        Click image for larger version

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                        I'm going for fast&simple so nothing that depends on geometry.
                        although clumps would be easier to map on per polygon basis.

                        I need a way to put initial direction map into cells of something like cellular map. so think bercon tiles but totally random.
                        next thing is maybe mixing 2 or 3 bercon tiles maps or some normal maps tools.
                        Marcin Piotrowski
                        youtube

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                        • #13
                          50/50 mix of color from the last version and bitmap from begining (I will keep that diffuse constant for now for easier comparison). something procedural would be nice for final version to control for example amount of dead dry grass blades.
                          this version is without lvl of detail. that and cylindrical normals on strands don't mix well in distance.

                          Click image for larger version

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                          Marcin Piotrowski
                          youtube

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                          • #14
                            first test with grass growing in clumps:

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                            Marcin Piotrowski
                            youtube

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                            • #15
                              How are you controlling the grass so it's not straight up and down creating a flowing look to some of the blades?

                              There used to be a vray fur styler script somewhere but it went away ages ago.
                              Colin Senner

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