GetMouseButtonDown not working for GL.LINES

Unity Engine
1

Im trying to draw lines using mouse button.

Im able to track mouse movement using mousePosition(). But mouseclick event is not detected.

function OnPostRender()

{
    CreateLineMaterial();

    lineMaterial.SetPass( 0 );

    GL.PushMatrix();

    GL.LoadOrtho();

    GL.Begin( GL.LINES );

    GL.Color( Color(1,1,1,1) );

    GL.Vertex3( 0, 0, 0 );

    GL.Vertex3( Input.mousePosition.x/1919, Input.mousePosition.y/1019, 0 );

    GL.End();

     GL.PopMatrix();

    if (Input.GetMouseButtonDown(0)) 
    print(Input.mousePosition);
}

What am i doing wrong here?

2

Put Input.GetMouseButtonDown in Update.

–Eric

3

Yes Update reads mouse events, But it does not render GL.LINES.

4

Solved it using flags to check both Update and OnPostRender.

5

It’s not a matter of using OnPostRender or Update, it’s using both.

Edit: as you evidently discovered. :wink:

–Eric