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Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Resources/CombineSubsurfaceScattering.shader

             #define SSS_ITER(i, n, kernel, profileID, shapeParam, centerPosUnSS, centerDepthVS, \
                     millimPerUnit, scaledPixPerMm, rcpDistScale, totalIrradiance, totalWeight)  \
             {                                                                                   \
-                /* Everything except for the radius is a compile-time constant. */              \
+                /* The relative sample position is known at the compile time. */                \
                 float  phi = TWO_PI * Fibonacci2d(i, n).y;                                      \
                 float2 vec = r * float2(cos(phi), sin(phi));                                    \
                                                                                                 \