Raytracing in DX12/DXR - ray generated in single direction

Hey,

I have problem with DXR HLSL code. I am trying to create simplest possible world-space shader, using ray-tracing DirectX12/DXR. I tried to achieve (as you can see in closest hit shader) flat shading of model. However, here is the result:

Which indicates, that every pixel is hitting geometry, which shouldn't be true.

As geometry I am using simple sphere presented above.

struct Vertex
{
	float3 position;
	float3 normal;
	float3 tangent;
	float3 binormal;
	float2 uv;
};

struct RayPayload
{
	float4 color;
};

struct Attributes 
{
	float2 bary;
};

struct SceneConstantBuffer
{
	matrix projectionToWorld;
	float4 cameraPosition;
	float4 lightPosition;
	float4 lightAmbientColor;
	float4 lightDiffuseColor;
};

ConstantBuffer<SceneConstantBuffer> g_sceneCB : register(b0 …