Multi threading with arrays / set aabb data

Help
,
1

Godot Version

4.7

Question

I’ve got an array of terrain patches with custom AABB’s but I want to slide the patches along in the x direction by 1 tile and when that happens I would like the AABB data to copy over from the adjacent tiles …

 grid[i][j].mesh.custom_aabb = grid[i+1][j].mesh.custom_aabb

but if there is a large array then I lose some performance … e.g

for i in range( 32 ):
    for j in range( 32 ):
        # do something with grid[ i ][ j ]
        if i == 31:
            grid[ i ][ j ].mesh.custom_aabb = grid[ 0 ][ j ].mesh.custom_aabb

basically thats like a loop of 1024 assignments. This might work in time but it could also cause some pretty low 1% low FPS scores, and so I would like to thread perhaps …

 for i in range(32):
    WorkerThreadPool.add_task(func(): set_aabb(grid[i], 32))

and the function

func set_aabb(grid:Array, count):
    for i in range(count):
        if i == count-1:
            grid[ i ].mesh.custom_aabb = grid[ 0 ].mesh.custom_aabb 
        else:
            grid[ i ].mesh.custom_aabb = grid[ i+1 ].mesh.custom_aabb

Does that even work ?

Is there a way of accessing the AABB data of the grid in a compute shader and setting it that way ?

What about clipping in a compute shader, making my own clip function and removing meshes from the render using an instance buffer?

Can I access the occlusion buffer in a compute shader ?

2

I guess not. I read somewhere that it isnt available.