mono/MonoGame — pull request #2047 by ossaltu (2013-10-02 11:40:44+00:00)
Title: Added GPU instancing for DirectX

Works on HiDef profile on DirectX projects. Has difference in with XNA framework interface: instead of doing this:
_device.SetVertexBuffers(
new VertexBufferBinding(vertexBuffer, 0, 0),
new VertexBufferBinding(instanceBuffer, 0, 1)
);
you should do it like this:
_device.SetVertexBuffer(vertexBuffer);
_device.SetInstanceBuffer(instanceBuffer);

Other API parts of instancing is same as in XNA.