SPIRV-Cross/reference/shaders/vulkan/rchit/primitive_id.khr.spv14.nocompat.vk.rchit.vk

#version 460
#extension GL_EXT_ray_tracing : require

layout(location = 0) rayPayloadInEXT uint payload;

void main()
{
    payload = uint(gl_PrimitiveID);
}