I thought HDRP is not meant for making games, and it is only used for making movies with Unity. Can you use ray tracing in URP? All online material show ray tracing is only for HDRP. Once I tried to run the HDRP demo, it made my PC crawl just to be in the editor. So where is there material on us…

AFAIK, Unity won’t make ray tracing effects in URP because it overlaps with HDRP features. However, you can make them yourself. There’s an asset (by Wandering Corgi) related to the topic and I remember that the creator also wrote an article about the implementation details somewhere.

The tools to do it yourself in a custom render feature for URP (or even built-in) are all there. You’d need to create and maintain a RayTracingAccelerationStructure , write your own RT shaders, and then dispatch them with like CommandBuffer.DisptachRays . For shadows, it’s fairly straightforward (jus…

[image] ClosingTime: I thought HDRP is not meant for making games, and it is only used for making movies with Unity. … Once I tried to run the HDRP demo, it made my PC crawl just to be in the editor. An older and/or weaker computer will do that with HDRP, and it’s even worse if you have a h…

Our game is built with HDRP and runs on all platforms except the Switch (we are porting to URP for it). I’d say it’s quite scalable if targeting 30 FPS on lower end hardware is viable for your game. Raytracing, on the other hand, IMO is not ready for production at all. It doesn’t support Decals, VF…

[image] ClosingTime: I think a Ryzen 7 2700X with RTX 2080 isn’t super old? You should be fine with that. I started working with HDRP using a Ryzen 5 1600X and a GTX 1080.

[image] burningmime: The tools to do it yourself in a custom render feature for URP (or even built-in) are all there. You’d need to create and maintain a RayTracingAccelerationStructure , write your own RT shaders, and then dispatch them with like CommandBuffer.DisptachRays . For shadows, it’s fa…

@DGordon I made this simple demo using inline ray tracing where I generate the shadow for a directional light in a compute shader, so you don’t need to change all shaders in your project. It’s not using URP but you can get some inspiration from the project GitHub - INedelcu/InlineRayTracingShadows:…

I would pay you if you put this up as a package in the unity asset store. It would be perfect for my project!

Ray tracing in URP? or only HDRP?

Unity Engine

Ryiah April 23, 2023, 3:22pm 4

An older and/or weaker computer will do that with HDRP, and it’s even worse if you have a high resolution monitor (1440p/4K). My last work project was based around HDRP and had solid performance on our target hardware but our lead developer wasn’t able to run it at all on their older Apple computer that they prefer to develop on.

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Ray tracing in URP? or only HDRP?

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