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Light coming through walls

michaelolsonmichaelolson Posts: 117
edited December 1969 in Technical Help (nuts n bolts)

I've created two separate walls, both at 90 degrees to each other. Think of it like a T. I have a spotlight on one side of the T illuminating one of the walls, but when I render it is also coming through on the other side. The one intersecting wall is into and past the barrier of the other wall, so it isn't a case of a gap between the walls. I've also noticed this problem with figures, where light seems to come through the heads of the characters and lights up the teeth and mouth when they should be dark like the rest of the figure. Anyone else have this problem and/or know how to fix it?
Thank you.

Comments

  • SzarkSzark Posts: 10,634
    edited December 1969

    Daz Studio? Did you turn on Shadows for the lights as they aren't on by default?

  • mjc1016mjc1016 Posts: 15,001
    edited December 1969

    Also, how are the walls constructed?

    Single planes...4 vertices, 1 face?

  • michaelolsonmichaelolson Posts: 117
    edited December 1969

    Hi. Yes there are 4 lights and all have shadow mapping using ray tracing turned on. The main wall that is getting the extra light has many vertices in it because three is a curve in it, but the other wall that intersects it goes solidly through it.

  • mjc1016mjc1016 Posts: 15,001
    edited December 1969

    I'm going to assume that they aren't 'solid', but just flat, no thickness planes. 3Delight has always had trouble with making walls like that not leak.

    If you created them in a modeler, use whatever tool is native in that modeler to create some 'thickness' to the walls. In Blender I would just 'solidify' them.

    This first image is just two planes, yes one is curved with no 'thickness' to them.

    The second is the same walls, but 'solidified'.

    walls002.png
    1024 x 1280 - 340K
    walls001.png
    1024 x 1280 - 356K
  • mjc1016mjc1016 Posts: 15,001
    edited April 2015

    Thought I'd throw up a couple with GI and Ambient Occlusion...

    You can see the lack of 'thickness' also affects the AO, too.

    Again, top image no thickness.

    The 'glow mouth' is usually another problem...either Ambient is set to a light color and high value, or the interior mouth surfaces have a SSS shader applied to them.

    walls003.png
    1024 x 1280 - 2M
    walls004.png
    1024 x 1280 - 2M
    Post edited by mjc1016 on
  • michaelolsonmichaelolson Posts: 117
    edited December 1969

    Thanks! That's probably what it is, the walls were made using the photoshop 3d function, saved as OBJ, and I am assuming they aren't solid as that takes more memory. I can always import it into Hex and weld them together I suppose...

    Any idea why I get the same issue with characters? The mouths and teeth being a lot lighter, it is because they also aren't solid? Any fixes for this?

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