I am in my final year at University studying computer games programming
I have a final year project which I was inspired by PowerVr and because of that my project is assessing the performance of ray tracing within a real time application.
I am now onto the design phase and had a question if possible, I have a G-Buffer which for this example stores simply the world pos and normal. I want to trace in the direction of the light and see if it reaches the light following your post on gamasutra.
Am i right in thinking that, for every step of the trace i sample that new coord data and get the world pos and from this work out if the object is blocking my line of sight with the light?
I feel once i get this understood i will be able to start implementing light,shadows and reflections
Sorry if this is not appropriate and if so I apologise