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V-Ray Dome light + Vray Mtl with Environment map

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  • V-Ray Dome light + Vray Mtl with Environment map

    Hello!

    I'm creating a studio setting for white background products and I normally use a simple HDRI using a dome light as a fill light but I wanted to add some additional fake reflections into specific faces of a metallic product, however I'm realizing that there appears to be no way of overriding the HDRI or even blending its reflections while attempting to place an Environment map inside the V-Ray Material.

    I've increased the "Env priority" all the way to the maximum at still isn't doing anything unless I completely deactivate the Dome light.

    Is there another way to do this? My current workaround was to add an ExtraTex render element with the same mapping I would use and cryptomatte it into the the desired material to just add in in the VFB in compositing as either screen or whatever looks good, however I don't feel like this extra step should be necessary as normally the Environment map should work just fine.

    The reason I'm trying to do it like this is because I want only specific faces of the model to show these fake reflections, think of it as a tray where the inner parts of the tray do show reflections because they have something to reflect but the outer parts tend to look flat, so I'd like to add some slight fake reflections there. Another way I tried doing this is by adding a composite reflection map but I feel like it alters my reflections too much and I lose too much control over the reflections. Normally my goal is to make these shaders as versatile as possible in between scenes.

    Is there something I might be missing that could be limiting the Environment map?
    I don't have an environment map in the Environment and effects window, the background color is set to black and, in the V-Ray settings, I have everything deactivated as well.

    The scene consists only of a bent white plane as background and some rotating animated lights, with the HDRI as a general fill light.

    Thank you!

  • #2
    Originally posted by mario_alvarezkhrystych View Post
    I've increased the "Env priority" all the way to the maximum at still isn't doing anything unless I completely deactivate the Dome light.
    Why don't you try disabling the "Affect Reflections" of the VRayDomeLight and control the reflections through the Environment override slot of the VRayMtl? I tried a simple setup with a Multi/Sub-object shader with two VRayMtls with different Environments. You set the mat id of the faces depending on which Environment you wish to show and it seems to work as your desired result.

    Aleksandar Hadzhiev | chaos.com
    Chaos Support Representative | contact us

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    • #3
      Ah! I guess that could work. I would need to add the HDRI into every material's environment slot then, though, right?

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      • #4
        Originally posted by mario_alvarezkhrystych View Post
        Ah! I guess that could work. I would need to add the HDRI into every material's environment slot then, though, right?
        Yes, exactly.
        Aleksandar Hadzhiev | chaos.com
        Chaos Support Representative | contact us

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