Sorry if i worded the title incorrectly, but lets see if i can word it better here. What i'm trying to say is that if you were making 1 object and needed to use 2 different polygons would you try to connect their meshes ? Or just combine them to be 1 object? I want to know because i don't know if that would screw up in…
It depends. Preferably, you don't want to have floating/intersecting geometry as it leads to z-fighting. I've also heard it can affect hardware performance, as more individual meshes = more draw calls. However, I do know some tricks were it is necessary to separate a mesh. For example, on a gun model, you would model the…
Actually this very much has been a permanent issue with decals, and various specific techniques had to be built to fight it, ranging from depth bias to using the exact same polygons as the object the decal's gonna be on (because that way the exact same z values will be output, avoiding z-fighting entirely) to deferred…
Intersecting geo is used a lot in games. The simplest example is when you add props onto a terrain, or combine rock meshes to get rock formation so its definitely something that is used in some causes. Here is a thread related to overdraw: http://www.polycount.com/forum/showthread.php?t=89154 And you can read this in it:…