Question Mesh.AllocateWritableMeshData allocates what, how much ?

Hi,

im not sure this is the proper section but lets try.

When generating Meshes we have to use
"Mesh.MeshDataArray meshDataArray = Mesh.AllocateWritableMeshData(1);"
this gives us an MeshDataArray
It containts MeshData.

Since we define the Vertex and Indice Layout later, the MeshData, MeshDataArray and AllocateWritableMeshData can NOT know how big the Streams or the Data is that we work with or want to work with.

I read throu:
https://docs.unity3d.com/2020.1/Documentation/ScriptReference/Mesh.AllocateWritableMeshData.html
https://docs.unity3d.com/2020.1/Documentation/ScriptReference/Mesh.MeshDataArray.html
https://docs.unity3d.com/2020.1/Documentation/ScriptReference/Mesh.MeshData.html

I would like to know, but i cant seem to find the awnsers:
How big is MeshData in bytes?
How much "Space" or "Memory" does Mesh.AllocateWritableMeshData allocate by default?
(Is there a possible systemInfo that i missed?)

 

It allocates a really small amount of memory, as far as I remember. Basically N structures for holding eventual mesh data.

 

Thank you very much, i can work with that