Hi everyone,
I’m currently facing challenges getting Vulkan raytracing/pathtracing to work in Unreal Engine 5.5.1 on Ubuntu 22.04. My GPU is an Nvidia GeForce GTX 1070 (Pascal).
I encountered similar issues with DX12/DXR (DirectX Raytracing) on Windows using Unreal Engine 5.4.4. After some research on this topic i found the the reason
I discovered that raytracing support for Pascal GPUs in UE4 relied on emulation. Unfortunately, it seems Epic Games has removed support for Pascal GPUs by limiting access to the variable DXR_ALLOW_EMULATED_RAYTRACING=1, which requires editing the source code and rebuilding the engine as a workaround , the solution (detailed here: GTX-RTEMU-543-bin-patch/README.md at GTX-RTEMU-543-bin-patch · jimshalo10/GTX-RTEMU-543-bin-patch · GitHub).
I’m starting to think this might be the same situation with Vulkan. Has anyone experienced this issue or found a solution? Any insights would be greatly appreciated!
Thank you!