There is a new PT mod for Cyberpunk 2077 with ReGIR. This one is technically even more advanced than ReSTIR of PT 2.1.
Link:
What is PTNext?
If you have more GPU power, I would absolutely use PTNext, which is ReGIRDI + ReGIRGI. Note, there is no RTXDI here at all any more — PTNext still uses ReSTIR and ReLAX, but adds ReGIR. PTNext is the next generation of PT21.
How is ReGIR different from PT21?
If you'll remember, PT21 is ReSTIRGI + RTXDI... ReSTIR samples a few path traced pixels on the screen to see what's important (importance sampling, or IS), and then does this again (resampled importance sampling, or RIS), then sends more rays there.
You could liken this to "screenspace" path tracing — in that the smaller something is on screen, the less path tracing will be applied to it, because it's considered less important. Objects in the distance – especially faces, foliage, shadows, etc. – can end up with not much detail. RTXDI is similar, it tries to work out which shadows and lights are important and only focuses on those.
ReGIR is different: It divides the world space into a 3D grid. It then sends some rays to each grid sector to determine what's important in each 3D sector. It then sends more rays to those sectors. It is still doing IS and RIS — only in 3D. In this way it's an advancement of ReSTIR.
The major advantage here is it's more detailed and accurate, especially with objects farther away from the camera, but it's also a performance improvement, so has similar performance to PT21, possibly even better.
More info about the different PT modes can be found here: https://www.nexusmods.com/cyberpunk2077/articles/1027
Link:
Cyberpunk Ultra Plus Engine Control Panel and Hotfixes
Advanced engine control panel with 58% faster path tracing, improved visuals, and many vanilla bugfixes. For AMD and Nvidia. 100% of donations go to Wildlife Society for all my mods.
www.nexusmods.com
What is PTNext?
If you have more GPU power, I would absolutely use PTNext, which is ReGIRDI + ReGIRGI. Note, there is no RTXDI here at all any more — PTNext still uses ReSTIR and ReLAX, but adds ReGIR. PTNext is the next generation of PT21.
How is ReGIR different from PT21?
If you'll remember, PT21 is ReSTIRGI + RTXDI... ReSTIR samples a few path traced pixels on the screen to see what's important (importance sampling, or IS), and then does this again (resampled importance sampling, or RIS), then sends more rays there.
You could liken this to "screenspace" path tracing — in that the smaller something is on screen, the less path tracing will be applied to it, because it's considered less important. Objects in the distance – especially faces, foliage, shadows, etc. – can end up with not much detail. RTXDI is similar, it tries to work out which shadows and lights are important and only focuses on those.
ReGIR is different: It divides the world space into a 3D grid. It then sends some rays to each grid sector to determine what's important in each 3D sector. It then sends more rays to those sectors. It is still doing IS and RIS — only in 3D. In this way it's an advancement of ReSTIR.
The major advantage here is it's more detailed and accurate, especially with objects farther away from the camera, but it's also a performance improvement, so has similar performance to PT21, possibly even better.
More info about the different PT modes can be found here: https://www.nexusmods.com/cyberpunk2077/articles/1027
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