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problem lightind lightmass help please

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    problem lightind lightmass help please

    I put grass in "foliage mode" ... Image :




    After that give Buld lighting: appears this: why? image:



    thanks a lot

    #2
    Grass meshes need to have lightmap UVs.
    http://udn.epicgames.com/Three/LightMapUnwrapping.html

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      #3
      ok thanks I solved

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        #4
        I have a problem ...

        all "mesh" has resolution light 64. if the "landscape" resolution light "4" given build lighting (with lightmass) loading in 2-3 minutes.

        but if you "landscape" light resolution to 16 or 32 or 64 etc. loading continuously. ("processing mapping" loading continuously)

        blue line loading hours on end without stopping

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          #5
          Lightmap resolution for landscape doesnt work like static meshes as far as i know. Try 8, or 16 at most and see how it goes. Also check that log section in Swarm if it keeps building for a long time again and see if it says something about memory. If it does, then stick with 4.

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            #6
            ok thanks !!!!

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              #7
              The landscape lightmap resolution is per patch, low values are fine here.

              Having all static meshes at the same lightmap resolution is actually a bad idea. Those houses need a 256²/512²px map for sure whilst small props are fine with 32 or 64.

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                #8
                what should I do?

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                  #9
                  Open the properties of those static meshes in the content browser, I'm sure you will find the needed settings. As for the grass: if you want to speed up light building, turn off shadow casting in all grass meshes, and use post-process ambient occlusion instead. It sometimes even produces much better results nn large density.

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