UE4.25 Cannot see any raytrace in the scene despite all the main instructions

Development Architectural and Design Visualization
1

Hello everyone,

I know I might be missing something basic… but I have installed a Quadro RTX 6000 to test raytracing and for some reason nothing happens.

To sum up:

1- Windows 10 build is 19041.330

2- Latest drivers for the Quadro card

3- DirectX12 installed and directx 11 &12 (sm5) checked and default RHI is on directx 12. I also did the " -dx12" old trick in the shortcut of UEeditor.exe just in case.

4- Raytracing is enabled

5- Support compute Skin Cache checked

After restarting it has compiled all the shaders, 5 mins approx, I played around with postprod volume (RT GI, RT reflections, RT AO etc) but nothing happens, not even a small flicker which makes me believe that Raytracing is not working at all. I tried it on my scene and on startup scenes but nothing at all. I have a skylight, point lights, emissive materials, nothing seems to generate any GI or reflection at all.

Is there anything missing?

Thank you in advance,
Fran.

2

Are meshes set to Static or Movable, or Stationary? Is there a directional light?

3

Everything is static, no directional light. :frowning:

4

Not sure if it may help, but while trying to re-enabling raytracing and directx12 and restarting UE, get this error msg:

LoginId:449572fc4d2d5dbf83d316bd729f95b7
EpicAccountId:8bac6e9f728749c1ad9f64e4d6cbba79

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION 0xe1d3d160

D3D12
UE4Editor_D3D12RHI
UE4Editor_D3D12RHI
UE4Editor_D3D12RHI
UE4Editor_D3D12RHI
UE4Editor_D3D12RHI
UE4Editor_D3D12RHI
UE4Editor_RHI
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

Any idea?
Thank you guys…

5

And I think it was supposed to appear a new voice in the view mode (Lit, Unlit, Wireframe etc) as Path Tracing, which is not there.

6

You didn’t mention a post process volume. You need one of those in the scene and enable ray-tracing in there. Did you place one?