Hello,
Is raytracing supported on the RX 6000 series video cards under Linux?
What about the 7000 series?

glxinfo shows
Device: AMD Radeon RX 6800 (sienna_cichlid, LLVM 13.0.1, DRM 3.42, 5.15.0-57-generic) (0x73bf)

https://community.khronos.org/t/rayt...of-dxr/77016/3
https://community.khronos.org/t/open...pport/104489/2

So, officially, OpenGL doesn’t have the raytracing feature (doesn’t expose the hardware’s raytracing ability) and never will have.

They have written the extension specification for Vulkan.
VK_KHR_ray_tracing_pipeline
VK_KHR_ray_query
GLSL_EXT_ray_tracing
SPV_KHR_ray_tracing
VK_KHR_acceleration_structure

https://registry.khronos.org/vulkan/..._pipeline.html
https://github.com/KhronosGroup/GLSL...ay_tracing.txt
https://htmlpreview.github.io/?https...y_tracing.html
https://registry.khronos.org/vulkan/...spirv_1_4.html
https://registry.khronos.org/vulkan/...structure.html



but none of those extensions are shown when I run vulkaninfo via the command line.

I have seen a couple of videos on youtube that claim to be running Linux, using some AMD 6800 XT and they demo MetroExodus and Shadow of the Tomb Raider where they enable raytracing.

This is odd since AMD claims these GPU are RDNA2 and it is suppose to have hardware support for DirectX 12 raytracing.

RADV_PERFTEST=rt environment variable needs to be set. Also, kernel & mesa is ancient for AMD RDNA2 ray tracing. Use Kernel 6.1.x, at a minimum. Maybe even Kernel 6.2-rcx. Use at least mesa version 22.3.2.

I tried installing linux-headers-6.1.6-060106_6.1.6-060106.202301141035_all.deb and some other DEB files in a VM, following an online instruction.
The VM boots up and works but I don't know if I should mess around with my real installation.

I downloaded the wrong driver from amd.com.
I don't know what that Ubuntu HWE thing is.

So, I downloaded the non HWE Ubuntu 22.04 AMD driver.
This one installed it but WOW, it is 1.6 GB of files downloaded.
I rebooted. Looks like I now have raytracing support in Vulkan.

Quake 2 RTX works.

The downside is that Cyberpunk 2077 crashes. I did not even turn on raytracing.
Shadow of the tomb raider doesn't start up.. I did not even turn on raytracing.
Metro Exodus crashes. . I did not even turn on raytracing.

Are the AMD drivers not tested?

This might sounds too easy but installing
sudo apt-get install amdvlk
solved my issues using raytracing.

Kubuntu 22.04
AMD Radeon 6800 16 GB
Kernel Version: 5.15.0-83-generic


Whoaaaaa, they added raytracing support.
Now I can run Quake 2 RTX without any special flags.
It runs as fast as it does on Windows.

CyberPunk 2077, I can’t turn on the RTX. Clicking the bar thing doesn’t set it to on.
Metro Exodus Enhanced Edition says there isn’t any support for DXR 1,1.
Shadow of the Tombs Raider, there isn’t a feature to turn on RTX.

I ran vulkaninfo
VK_KHR_acceleration_structure NO
VK_KHR_ray_tracing_pipeline NO
VK_KHR_ray_query YES
VK_KHR_pipeline_library YES
VK_KHR_deferred_host_operations YES
GLSL_EXT_ray_tracing NO
SPV_KHR_ray_tracing NO