How to implement functions similar to geometry shaders with Babylonjs?

For example, you already know the coordinates of a point. On the basis of this point, you can use the shader to process a sphere around it and render it. OpenGL can be realized with geometric shaders. How can Babylon be realized?

You can not or only on CPU. This is not available to either WebGL or WebGPU

Hey there just checking in, was your question answered? @yuemiao