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    Lightmap UV padding question

    Hello, normally I use 1/64 ="0,015625" for UV layout spacing. I use MAYA. On the page https://docs.unrealengine.com/en-US/...ing/index.html
    that shows something different If you scroll down to image which shows spacing with red-1 and green-2. There is the formula is 1/62=0.0161290323. When I make a lightmap I just do layout spacing 0.015625 then normalize UV and layout again with "
    0.015625". I can foresee why that use "
    0.0161290323" value. Now my question is:

    Is that the value that I should use for Layout spacing.
    The value
    0.0161290323 for both Red1 and Green2 spacing (image on web page) or just for outer spacing ?
    I make UV spacing for texture map again "0.015625" Is that wrong ?

    Thanks.
    Last edited by gomi; 11-11-2019, 08:49 AM.

    #2
    UE4 automatically adds a 1 pixel border around lightmap UVs, so 1/62 is correct for the pixel grid.

    In 4.23 there were changes to improve the automatic lightmap UV generation

    https://forums.unrealengine.com/deve...46#post1657846

    Comment


      #3
      Originally posted by ZacD View Post
      UE4 automatically adds a 1 pixel border around lightmap UVs, so 1/62 is correct for the pixel grid.

      In 4.23 there were changes to improve the automatic lightmap UV generation

      https://forums.unrealengine.com/deve...46#post1657846
      Thanks for your answer, should I use same value for texture uv spacing ?

      Comment

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