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Thread: Blended maps to bump (or normal)

  1. #1
    May the sauce be with you starbase1's Avatar
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    Blended maps to bump (or normal)

    Hi All,
    I'm struggling to find a way of driving bump (or normals) from a blended image map using a mixer node.

    I've tried various conversions, but can't get anyhere - attached is where I am at present.

    Any enlightenment on offer?

    Cheers!
    Nick
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  2. #2
    the escapist zarti's Avatar
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    Quote Originally Posted by starbase1 View Post
    Hi All,
    I'm struggling to find a way of driving bump (or normals) from a blended image map using a mixer node.

    I've tried various conversions, but can't get anyhere - attached is where I am at present.

    Any enlightenment on offer?

    Cheers!
    Nick
    didn't applied the colors to make the bumps easier to see ...
    the same bitmap is applied on both image nodes, but only the axis were different.
    .
    Last edited by zarti; 06-22-2011 at 07:46 AM.

  3. #3
    the escapist zarti's Avatar
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    just found this one.

    it looks great! so thank you to both of you! =)

  4. #4
    May the sauce be with you starbase1's Avatar
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    Now that looks handy, well spotted!
    Faith is the opposite of Intelligence.

    Touched by his noodley appendage!
    My Lightwave Graphics & Downloads!!!

  5. #5
    You can blend bump maps together using the standard mixer node, as you did SB, it's just that the bump and normal editors won't accept anything but a blue node output. So you can simply feed that output through a vector maths node first (like say add or subtract, but don't enter a value) then it will accept it. a colour mixer node (r,g,b) mixes up data the same as a vector one (x,y,z), it's just numbers

    Also you don't need to use DP's bump->normal node really, if you subtract the bump map from a normal, that transforms it into a normal map.

    Also, if you want to transform those bump maps to real normal maps, you can use the Nvidia free tool http://developer.nvidia.com/object/p...s_plugins.html for Photoshop (or PS plugin compatible apps).
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  6. #6
    Thanks Tobian, very useful!

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