title: What is the best way to display only a fragment shader?
body: <p>I am trying to make a program to just mess around with fragment shaders (mostly raymarching), similar to what websites like shadertoy and glslsandbox do, but I'm not sure how to get it set up.</p>
  
  <p>I have set up a c++ sfml project and I have done some googling about the problem but haven't found a clear explanation. Some people seem to recommend drawing a rectangle that fills the screen and then setting a texture on it and using that, but is that really the best way?</p>