NVIDIA Release RTX Powered Godot Fork

Tomcat

JohnLogostini This is a Git problem, not a Godot problem.

I doubt that, since the errors I get when opening a project are minor but vary each time. I’ve already had trouble opening large files in Godot. Perhaps Godot isn’t quite ready for working with large projects yet.

There’s also a chance you don’t have SSH keys set up with GitHub

I use GitLab.

JohnLogostini

Tomcat It doesn’t matter if you use GitLab. I am hosting the project on GitHub, so you need SSH permissions to use SSH URLs from GitHub.

Tomcat

I downloaded Sponza from here. Just Base Scene for now. It opened fine.

JohnLogostini

Tomcat Yeah, that’s because all of the lights are disabled by default, and the sunlight is too weak. Also, something to note is that every normal map in the scene is flipped backwards by default, so I had to configure every single material to look correctly. I also modified the specular response for every light and heavily configured the world environment for more natural lighting. I’d highly suggest loading my version of the scene.

Tomcat

How can I make the room bright with sunlight coming through the windows?

As it is:

As it should be:

JohnLogostini

Tomcat In this example, the Path-Tracing looks correct you just don’t have enough light. Basically, in the Rasterized version, you don’t have shadows enabled, so you’re seeing 100% light leak. What I’d suggest is adding a World Environment with a decently bright HDRI you can fine one on Poly Haven use that to fill the windows. Then rotate your sun light directly toward your main window to get the most fill light, using a warm yellow color that’s fairly close to white. If that’s still not enough, add lights outside each window.

Tomcat

JohnLogostini I’d highly suggest loading my version of the scene.

It seems the heavens were favorable today, and I managed to load your scene. It looks like I was able to fix all the dependencies.

Tomcat

JohnLogostini In this example, the Path-Tracing looks correct you just don’t have enough light.

This is the light set to maximum. When Path-Tracing is turned off, the screen is simply uniformly white.

~~It is probably possible to place spotlights outside the windows — this is acceptable for the demo scene, but not in a game.~~

Placing the spotlight right outside the window didn’t help at all. A quick test showed that the light source needs to be inside the room.

JohnLogostini

Tomcat Wahoo, awesome!

JohnLogostini

Hey everyone, I have another Path-Tracing demo project for you today. It’s the NVIDIA Attic scene, originally created to showcase Ray-Tracing in Unreal Engine 4. This has been fully and natively ported to Godot 4.7. I’ve used the geometry and scene layout from UE4 and replaced the materials with NVIDIA Omniverse PBR materials when available, as well as some custom materials when needed, which I believe makes this the most complete version of this scene, since all public versions have been missing either the layout and geometry or the PBR materials.

This is part of the same demo repository from before, so be sure to have SSH set up on your system before cloning, and I’ve also shared a video of the project in action.
https://github.com/johnlogostini/NVGWGD_Demos

Also, for those of you who struggle to compile Godot from source, I have uploaded the current builds on Itch.io for you. This includes the hyper-experiment Linux version as well.

Feedback is always appreciated, and this is still under active development it's just all happening in the Godot contributor chat, which makes things impossible to find. So here’s the link if you're interested in contributing or just looking at the behind-the-scenes work

Godot Contributor Chat | NVPathtracer mega discussion

kuligs2

waiting for AMD implementation on the pathtracing.. any day now..

JohnLogostini

kuligs2 It’s being worked on, but it was a little down the list. I will check in and ask about the progress of NRD.

Tomcat

I finally launched my project. The swaying of the trees here is achieved using a shader. As you can see, the shadow issue is indeed a real problem. All this heavenly beauty is currently limited to completely stationary objects (whether meshes or shaders).

I’ll probably end up using it this way — I’ll look into this possibility, but for now it’s just a very tentative plan.

JohnLogostini

Tomcat Custom shaders aren’t fully supported yet. The main developer has been using Road to Vostok as a reference and is almost done with all the shaders there, so this should improve significantly once that’s merged.

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