Putting obj files on the GPU with Metal.jl

Specific Domains GPU
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1

How do I bring mesh from obj files onto the GPU?

I am trying to do some GPU manipulation of meshes from .obj files. I was testing my code with the stanford bunny obj file, which I imported into a GeometryBasics Mesh using

using FileIO
bunny_mesh = load(joinpath((@__DIR__),"stanfordbunny.obj") )

I then try some sort of manipulation on the GPU with Metal.jl here’s a minimal working example:

using Metal
a =  collect(map(pix->let 
        bunny_mesh=bunny_mesh;
        return pix
    end, 
    MtlArray(ones(Float32, 100))))

Doing this returns an array of BrokenBroadcast instead of

100-element Vector{GPUArrays.BrokenBroadcast{Union{}}}:
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 ⋮
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()
 GPUArrays.BrokenBroadcast{Union{}}()