RBDOOM-3-BFG VS Q2RTX

RBDoom3bfg, same thing, but for the BFG edition.

On the other hand BFG edition supports 120Hz rendering and has some great gamepad support. However the "shoulder lamp" and some tweaked brighter lighting destroys the game's atmosphere IMO while some textures and lights appear worse. I'd still recommend it if you liked the original game, but perhaps also play it with RBDoomBFG and its GI datapak - it introduced PBR shaders and changes the lighting considerably, but the game wasn't designed for that so i'd recommend it only for a second playthrough (you can disable most of the effects but even then it still looks off). The official BFG edition is closer to the original Doom 3 but still has its own issues so unless you want 120Hz rendering and/or gamepad support, i'd still recommend the original (with Dhewm3). Also note that the original BFG edition doesn't allow you to skip cutscenes which is annoying for a second playthrough.

BFG has better out of the box support, but both versions are open source and as such the community has made source ports for both of them to the point they are essentially equivalent and you only pick the one with the features you want the most, last time I played was using BFG because RBDOOM3 added support for PBR so the game isn't so absurdly dark but your mileage may vary and may prefer dhewm3's more faithful experience using the original release

But like another commenter said, Q2RTX is free for the shareware version so just give it try! https://github.com/NVIDIA/Q2RTX/releases

First, are you sure you're using the latest version of Q2RTX? Get it from here just to be sure: https://github.com/NVIDIA/Q2RTX/releases/tag/v1.7.0

https://github.com/NVIDIA/Q2RTX A really solid a-svgf implementation by nvidia in quake. A-svgf is a basic denoiser.

We can be pretty much sure that the parts of the Q2 RTX code that uses the Vulkan RT API are optimized for Nvidia, as Nvidia basically developed that API. Until the official Khronos Vulkan RT API was finalized, Q2 RTX used an Nvidia specific extension which was committed by an Nvidia engineer.

I'm not confusing anything, I've been following this stuff very closely, Q2VKPT was a solo project by Christoph Schied and was actually primarily meant to showcase/test his denoiser, Nvidia saw his project, thought it was cool and probably that it would be a good test bench for VulkanRT and so they've decided to expand on his project to see how far they could take it. Quake II RTX is absolutely open source, since the original code is licensed under GPL v.2 it can't be proprietary nor contain proprietary code in any way, that's why DLSS and Flow were never implemented, because if they were they would have to be open sourced as well (though Flow has been recently open sourced anyway), here is the code: https://github.com/NVIDIA/Q2RTX

Modded yes it has a lot of upgrades, but the official Quake 2 RTX hasn't had an update in almost 1 year (since Jan 2022): https://github.com/NVIDIA/Q2RTX/releases

Minecraft RTX = 8 temporally afaik Quake 2 RTX = 1 or 2 (tweakable) Lego Builder's Journey = 2

I'm assuming you already implemented it like this? https://github.com/NVIDIA/Q2RTX/blob/master/src/refresh/vkpt/shader/asvgf_gradient_reproject.comp

There is a mod for Serious Sam, one for Doom (the original) and Quake II RTX (the most impressive since it's done and maintained by Nvidia programmers) if you're into retro stuff, I don't personally know of any free modern games though.