Using MultiMesh without transform buffer

[crimson bane]

I had the idea to draw a number of primitive quads using GPU instancing (using MultiMesh.instance_count) and then position them in vertex shader using INSTANCE_ID as a basis (e.g. get their position with a simple mod operator on INSTANCE_ID).

However it seems I need to explicitly set transforms with set_instance_transform for each instance on the CPU? Even if I don't need it in my case. Is there any way to not generate transform and avoid building that buffer with MultiMesh?

[crimson bane]

It seems this is how Godot instanced rendering is designed to work:

https://github.com/godotengine/godot/blob/2b056115ef6c0e92eac70692d83676ea6e9456da/servers/rendering/renderer_rd/storage_rd/mesh_storage.cpp#L1236