Fix shader warning, shadow warning and hide physical camera parameter

ScriptableRenderPipeline/Core/CoreRP/Shadow/Shadow.cs

         // UI stuff
         protected struct ValRange
         {
-            GUIContent  Name;
+#if UNITY_EDITOR
+            GUIContent Name;
+            float       ValMax;
+#endif
-            float       ValMax;
-            public ValRange( string name, float valMin, float valDef, float valMax, float valScale ) { Name = new GUIContent( name ); ValMin = valMin; ValDef = valDef; ValMax = valMax; ValScale = valScale; }
+            public ValRange( string name, float valMin, float valDef, float valMax, float valScale )
+            {
+#if UNITY_EDITOR
+                Name = new GUIContent( name );
+                ValMin = valMin;
+                ValMax = valMax;
+#endif
+                ValDef = valDef;
+                ValScale = valScale;
+            }
+
 #if UNITY_EDITOR
             public void Slider( ref int currentVal ) { currentVal = ShadowUtils.Asint( ValScale * UnityEditor.EditorGUILayout.Slider( Name, ShadowUtils.Asfloat( currentVal ) / ValScale, ValMin, ValMax ) ); }
 #else

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Editor/Camera/HDCameraUI.cs

             Inspector = new []
             {
                 SectionPrimarySettings,
-                SectionPhysicalSettings,
+                // Not used for now
+                //SectionPhysicalSettings,
                 SectionCaptureSettings,
                 SectionOutputSettings,
                 SectionXRSettings,

ScriptableRenderPipeline/HDRenderPipeline/HDRP/ShaderPass/ShaderPassForward.hlsl

 
     // We need to skip lighting when doing debug pass because the debug pass is done before lighting so some buffers may not be properly initialized potentially causing crashes on PS4.
 #ifdef DEBUG_DISPLAY
+    // Init in debug display mode to quiet warning
+    #ifdef OUTPUT_SPLIT_LIGHTING
+    outDiffuseLighting = 0;
+    ENCODE_INTO_SSSBUFFER(surfaceData, posInput.positionSS, outSSSBuffer);
+    #endif
+
     if (_DebugLightingMode != DEBUGLIGHTINGMODE_NONE || _DebugMipMapMode != DEBUGMIPMAPMODE_NONE)
 #endif
     {