HDRenderPipeline: move InfluenceFadeNormalWeight to shader library

ScriptableRenderPipeline/Core/CoreRP/ShaderLibrary/ImageBasedLighting.hlsl

     return real4(lightInt / cbsdfInt, 1.0);
 }
 
+// Little helper to share code between sphere and box reflection probe.
+// This function will fade the mask of a reflection volume based on normal orientation compare to direction define by the center of the reflection volume.
+float InfluenceFadeNormalWeight(float3 normal, float3 centerToPos)
+{
+    // Start weight from 0.6f (1 fully transparent) to 0.2f (fully opaque).
+    return saturate((-1.0f / 0.4f) * dot(normal, centerToPos) + (0.6f / 0.4f));
+}
+
 #endif // UNITY_IMAGE_BASED_LIGHTING_INCLUDED

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Material/Lit/Lit.hlsl

     return positionWS + rayWS * hitDistanceFromPosition;
 }
 
-//------------------------------------------------------------------------------------
-// Little helper to share code between sphere and box.
-// These function will fade the mask of a reflection volume based on normal orientation compare to direction define by the center of the reflection volume.
-//-----------------------------------------------------------------------------
-float InfluenceFadeNormalWeight(float3 normal, float3 centerToPos)
-{
-    // Start weight from 0.6f (1 fully transparent) to 0.2f (fully opaque).
-    return saturate((-1.0f / 0.4f) * dot(normal, centerToPos) + (0.6f / 0.4f));
-}
-
 //-----------------------------------------------------------------------------
 // Ligth and material classification for the deferred rendering path
 // Configure what kind of combination is supported

Tests/GraphicsTests/RenderPipeline/LightweightPipeline/Scenes/030_Shader_RenderOrder.meta

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