InstancedMesh challenges

[zebranine]

Thanks for this very nice library.

In my experimentation I have been unable to make InstancedMesh work. I could not find an example. I am using LÖVE 11.5 on Windows.

Working with the code in instanced_mesh.lua I ran into issues with love.graphics.newMesh() vertexformat/attributes (perhaps related to LÖVE versioning?).

For example, I have modified:

local default_format = {
      {name = "instance_position", format = "floatvec3"},
}

to:

local default_format = {
	{ "instance_position", "float", 3},
}

..and for testing, modified attribute management with hard coded values accordingly, such as:

self.lg_mesh:attachAttribute("instance_position", self.instanced_mesh_buffer, "perinstance")
...
self.lg_mesh:detachAttribute("instance_position")

There may be remaining steps I omitted with shader value updates for the instanced draw, I haven't got there. I am applying the shader:

menori.ShaderUtils.shaders['instanced_mesh']

A usage example would be much appreciated.

Thanks again for the work put into this.