Lightmap UV padding question

Development Asset Creation
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1

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.

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/development-discussion/rendering/1655334-thanks-to-epic-games-for-new-generate-lightmap-uvs-4-23?p=1657846#post1657846

3

Thanks for your answer, should I use same value for texture uv spacing ?