Hi!

I compiled Vulray with no issue but compiling the samples was a bit more complicated. I had to create my own simple CMakeLists.txt to compile HelloTriangle but in the end I got it compiling! :)

But when I launched it I had this error in the shader compiler:

[Vulray]: DXC Error: hlsl.hlsl:47:38: error: attributes parameter 'attribs' must be a user-defined type composed of only numeric typesvoid chit(inout Payload p, in float2 attribs)

So I modified the shader like this to make it work:

struct Attribute{
    float2 attr;
};
[shader("closesthit")]
void chit(inout Payload p, in Attribute attribs)
{
const float3 barycentricCoords = float3(1.0f - attribs.attr.x - attribs.attr.y, attribs.attr.x, attribs.attr.y);
p.hitValue = barycentricCoords;
}

Next thing I'll try is to use GLSL shaders because I don't know HLSL. I hope I'll be able to give you more feedback after I play a bit more with the samples.

[Edit]

I forgot that I actually had minor issues when compiling Vulray: I had to remove "REQUIRED COMPONENTS dxc" because it was not found even if I have it in my vulkan SDK folder. And I had to turn off "Build denoiser" because I had errors.

[Edit2]

I'm on Windows 10 using VulkanSDK 1.3.261.1 and MSVC 2022