public void CS()
{
UInt3 dtid = ShaderBuiltins.DispatchThreadID;
Vector4 color = Vector4.Zero;
uint randState = (dtid.X * 1973 + dtid.Y * 9277 + Params.FrameCount * 26699) | 1;
uint rayCount = 0;
for (uint smp = 0; smp < RayTracingApplication.NumSamples; smp++)
{
float u = (dtid.X + RandUtil.RandomFloat(ref randState)) / RayTracingApplication.Width;
float v = (dtid.Y + RandUtil.RandomFloat(ref randState)) / RayTracingApplication.Height;
Ray ray = Camera.GetRay(Params.Camera, u, v, ref randState);
color += Color(Params.SphereCount, ref randState, ray, ref rayCount);
}
color /= RayTracingApplication.NumSamples;
ShaderBuiltins.Store(Output, new UInt2(dtid.X, dtid.Y), color);
ShaderBuiltins.InterlockedAdd(RayCount, 0, rayCount);
}