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Thread: Terrain and airport

  1. #1
    Junior Member Newbie
    Join Date
    May 2011
    Location
    Italy
    Posts
    22

    Terrain and airport

    Hello,

    here is my problem not strictly related to OpenGL. I developed a quadtree based terrain engine ( regular grid Chunked Lod ). Now i want to put on it some models like an airport's runaway. It must follow seamlessy the terrain obviously. The runaway is very detailed with number and signals on asphalt modeled as polygon. Microsoft flight simulator seems it integrates the airport base with the terrain structure. I don't want this because my terrain is a regular grid. How can i make it works avoiding z-fighting and make it match with terrain lod.

    Thank you

  2. #2
    Super Moderator OpenGL Lord
    Join Date
    Dec 2003
    Location
    Grenoble - France
    Posts
    5,575

    Re: Terrain and airport

    Airports are on flat lands, so flatten the area where you put the airport.

    You may want to tweak GL_POLYGON_OFFSET between rendering terrain and airport, to avoid zfighting.

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