Merge pull request #1170 from Unity-Technologies/feature/RefractionModes

Used the MERGE_NAME macro

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Lighting/LightLoop/LightLoop.hlsl

+#include "CoreRP/ShaderLibrary/Macros.hlsl"
+
 //-----------------------------------------------------------------------------
 // LightLoop
 // ----------------------------------------------------------------------------
 #endif
     uint envLightCount;
 
-#define CONCAT(L, R) L##R
-    CONCAT(GPUIMAGEBASEDLIGHTINGTYPE_, TYPE), CONCAT(type, HierarchyWeight)); \
+    MERGE_NAME (GPUIMAGEBASEDLIGHTINGTYPE_, TYPE), MERGE_NAME (type, HierarchyWeight)); \
     AccumulateIndirectLighting(lighting, aggregateLighting);\
 }
 
         }
     }
 #undef EVALUATE_BSDF_ENV
-#undef CONCAT
 #undef FETCHINDEX
 
     // Also Apply indiret diffuse (GI)