Meshes as Variables...

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If I assign a mesh in the editor to a public variable in script of type "Mesh", when I assign it's content to an object (...meshFilter.mesh = ...), does Unity LOAD the Mesh then, or is it already cached in memory?

I change meshes on a number of my objects over the course of the game, and I'm noticing quite a bit of slowdown, even on iPhone 3GS. This shouldn't be the case, as there are only around 20 objects, and they're all box colliders?

Anyone have any ideas?

Answer 1

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Answer by Brian-Kehrer · Jan 26, 2010 at 05:29 AM

Why not attach all the various meshes to a parent gameObject, and simply turn on or off the ones you need or don't need?

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Answer 2

Answer by thom · Jan 26, 2010 at 05:10 AM

Can you use prefabs? The performance will be far greater if you are using prefabs.

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Eric5h5 · Jan 26, 2010 at 11:50 AM 0

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Prefabs have no effect on performance. They exist primarily for convenience and workflow reasons; for example a cube placed manually and a cube instantiated as a prefab are identical in the actual scene.

thom · Jan 26, 2010 at 06:36 PM 0

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I was under the impression that prefabs use shared meshes and shared materials so performance would be improved. Certainly the tutorials I learned on stressed creation of prefabs for performance but thanks for the heads up--I learn something every day!

Answer 3

Answer by andeeee · Jan 13, 2010 at 08:47 PM

When you assign the mesh, it gets loaded into the graphics hardware. I think that is what slows things down.

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Answer 4

Answer by S7ARBVCK · Jan 15, 2010 at 12:45 PM

Any way to get around this, then? Any way to "pre-load" meshes so I don't get the performance hit?

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Meshes as Variables...

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