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  • Problem with distant reflection color

    I am rendering the inside of an aircraft. At both ends of the scene, I have lavatories and closets that use a reflective wood material with a glossy reflection value of 1 (no blur). My problem is, there is a sharp change in color in the bins in the reflection. Up close to the reflective material, the reflected image is of bins where the color is tinted somewhat from the wood, as would be expected. As the reflection goes deeper, the wood tint stops and then you see a section in the reflection where the bins look white, almost as if there is some kind of falloff or dual reflection problem.

    It is not a problem with the number of bounces as it isn't reflecting black. I whipped the camera around and there is no material difference (it's an instance anyway). Because both ends have these monuments, the scenario is almost like having two mirrors facing each other. I've changed the fall off of the wood material from .01 to .1 and that didn't seem to matter (wrong way?). Changed shader from Blinn to Phong; nothing. My sample settings are all pretty low at this point but those shouldn't be causing this problem.

    Has anyone else had this problem?
    Attached Files

  • #2
    Have you tried to set the cutoff threshold for the material to 0.0?

    Best regards,
    Vlado
    I only act like I know everything, Rogers.

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    • #3
      The white bins look like they have reflections as well - did you try dropping the cutoff for those as well?
      www.dpict3d.com - "That's a very nice rendering, Dave. I think you've improved a great deal." - HAL9000... At least I have one fan.

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      • #4
        Under options for the material I've tried a "cutoff" of 0.0 with no luck (doesn't actually say threshold). The bins have no blurry reflections yet as that would make the render times unbearable at this point (unless I turn off trace reflections I guess). Any other ideas?

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        • #5
          Trust Vlado, it's a threshold.

          Do either of your materials have a falloff map in them? If so what are the settings?
          Eric Boer
          Dev

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          • #6
            I pointed out the discrepancy (cutoff versus cutoff threshold) hoping I was indeed changing the wrong value and that we weren't talking about two different things. I am not using a fall off map of any kind. I rendered a little bit closer to the reflected materials and the change in color doesn't seem to be geometry related as the division does not break where the parts are separated. The hunt continues.

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