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Best practice to illuminate a room?

Discussion in 'Global Illumination' started by HIPED, Mar 13, 2015.

  1. HIPED

    HIPED

    Joined:
    Nov 5, 2014
    Posts:
    4
    Hi,

    I need suggestions or a tutorial for natural soft indoor lighting.

    I don't want to use a directional light, but the other realtime lights don't support bouncing.

    The emissive materials, with dirctional specular maps look good but produce some strange black artifacts and light spots, as stated in the docs: "The Directional with Specular mode pushes the lightmapper to the limits of the GI technique it uses, which in some cases leads to artifacts. These are most often patches of incorrect dominant light direction, causing dark or black shading."

    Whats the best way to get high quality room lighting?

    Thanks
     
  2. KEngelstoft

    KEngelstoft

    Unity Technologies

    Joined:
    Aug 13, 2013
    Posts:
    1,366
    The other types of realtime lights does support indirect light bounces.
     
  3. HIPED

    HIPED

    Joined:
    Nov 5, 2014
    Posts:
    4
    You are right, the light bounces from a colored test object to a white one.
    I was confused of this message:
    "Currently realtime indirect bounce light shadowing for spot und and point lights is not supported".
    (appears with realtime point/spot lights)

    What is bounce light shadowing?

    Would be cool to use emissive materials only, but I can't get rid of the artifacts with "Directional with Specular mode" even with simple objects.
    A mix of emissive materials (non-directional or directional mode) and point/spot lights for specularity seems to be the best pratice for rooms right now?
     
  4. KEngelstoft

    KEngelstoft

    Unity Technologies

    Joined:
    Aug 13, 2013
    Posts:
    1,366
    It means that the bounced lighting doesn't use a shadow map, so you might get light leaking through walls. You have to work around this for now, but we will add this feature later in 5.x.
     
  5. HIPED

    HIPED

    Joined:
    Nov 5, 2014
    Posts:
    4
    Thanks for that info! Good to know you working on this.
    I experience light leaking and think I will switch to baked lights.