Colored circles in a 2D top-down game

Hi,

What's the best way (in terms of look, and performance) of making flat colored circles viewed from the top in a simple 2D game?

Thanks

 

Draw circle in paint program, import to unity, drag to scene. Now you have sprite gameobject, that is how Unity works and it is the most efficient way.
If the circles are not moving and have the same texture, you can check "static" in top left corner of selected prefab object to enable texture batching. That way you will get the best performance.
(Maybe except drawing your own circles via OpenGL, but hey, then you wouldn`t use game engine right? )

 

Actually a texture is not the most efficient way. You can have a shader which outputs a circle without any texture at all.

 

Isn`t shader applied onto texture? I may be wrong.

 

Shader is applied to the backbuffer. That is only a texture if you're drawing to a rendertexture. A shader doesn't require a texture, it's optional based on what you want the shader to do.