title: How to draw marks on Unity 3D plane?
body: <p>I am new to Unity. Sorry if I have a beginner style of question.</p>
  
  <p>I want to implement a 3D Chess game in Unity. I have already implemented a C++ shared library that contains the whole AI thing. I have used this library in WPF and Android and it is tested perfectly. Now it is Unity's turn.</p>
  
  <p>When the user selects a piece, next moves of it should be shown. </p>
  
  <p><a href="https://i.stack.imgur.com/WSsZe.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WSsZe.jpg" alt="Chessboard image"></a></p>
  
  <p>These marks can be a light or image. Circular or rectangle.</p>
  
  <p>One way to do this is to have 64 marks per each square of the Chess board and change their visibility programmatically.</p>
  
  <p>The other way, which I personally prefer, is to draw the marks programmatically. But I don't know how to draw on my Chessboard plane.</p>
  
  <p>Please guide me with it.</p>