QUAD - realtime raytracing engine prototype (C++/OpenGL) - short demo

QUAD is a real-time raytracing engine that I wrote a while back. It's an old student project I did back at Bournemouth University. Very challenging (pure C++/OpenGL programming) - this was the kind of project that was meant to make your life tough - and sure it did. Got a lot of help from my supervisor, Iann. This project was a form of experimantation - I tried to create a fully interactive, real-time ray-tracer that would ideally substitute rasterized OpenGL viewports and also give an artist a hint Lookdev/wise. Essentially - a rough previs tool. Obviously the deadline was short, so this is not finished by any means - but I had to stop there. Fun experience though, despite the fact, that OpenGL and raytracing is not a good combo at all, as I learned the hard way.

[krytharn]

There's something funny going on with the depth sorting.

[GameBacardi]

0:24 Something odd happen with one sphere at background.

[onlyposting]

Cool demo. Too bad the objects were static. It would have looked even 1000 times cooler, if some objects were slowly moving, bouncing, etc, with 1 or 2 extra light sources, while the camera was moving. Maybe next version :)

[dmd]

Im late but this is very good! Great work!

[RemyNote]

Cool, but why didn't you fix the depth sorting?

[Link]

my man got some silent hill static on the background, watch your back dude
love the video tho

[valentinorubio]

what happened with the spheres at 0:25? looks like the depth is messed or something like that.

[fahdv]

Really nice. Id also like to write my own opengl ray tracer. Are there any sources you could recommend?

[anonymoussloth]

I am learning opengl but I don't understand how to write a ray tracing engine in that. Can u explain your approach?

[BossBeneBaby]

u should only use the closest hit not any hit on the ray :) if u use vulkan u can use the driver implemented dynamic acceleration structure and the new raytracing pipeline. Anyway great project

[behnam]

Hi Daniel, Where should i begin if i want to build ray tracers like you ;)

[finnwillow]

Hey m8. I was wondering if you could help me a little bit. My PC is to under powered to do ray tracing. So I came up with a alternative solution to reflections, at the very least. It involves taking a stripped down camera at a very specific position and with very specific configurations that will take a photo every frame of what it sees, calculates the objects reflection warping based on the uv map and the normals of the models then maps that texture to the object. Contact me please if you're interested in the challenge.
Also you're a bloody genius m8!

[Lakasabasz]

Świetnie to działa, udostępniłbyś kod?

[reubenrk]

Wow man, that is so cool. Am also developing a real time ray tracer now it is super slow, how did you manage to make it run really fast?

[lanchanoinguyen]

Was the shadow casted by ray tracing or shadow volume?

[achtsekundenfurz]

00:25 01:52 02:52 02:59 How did you even manage to see the far sphere through the closer one there? AFAIK, computing intersections and keeping track of the closest one is about as easy as coding tasks get... The interactivity is nice and all, but that keeps irritating me.

[idkidk]

Nice to know that poles mess with ray tracing :D

[torcher]

Are you using any denoising algorithm?

[pajeetsingh]

Nice video. But your MacOS Dock gave me OCD fever.

[slgnssp]

what processor and graphics card were you running it on?