Fix issue with debug ligthing mode

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

     specularLighting *= 1.0 + bsdfData.fresnel0 * preLightData.energyCompensation;
 
 #ifdef DEBUG_DISPLAY
-
-    switch(_DebugLightingMode)
+ 
+    if (_DebugLightingMode != 0)
+        switch (_DebugLightingMode)
+        {
-        diffuseLighting = lighting.direct.diffuse + bakeLightingData.bakeDiffuseLighting;
+            diffuseLighting = lighting.direct.diffuse + bakeLightingData.bakeDiffuseLighting;
+
-        diffuseLighting = indirectAmbientOcclusion;
-        specularLighting = float3(0.0, 0.0, 0.0); // Disable specular lighting
+            diffuseLighting = indirectAmbientOcclusion;
+            specularLighting = float3(0.0, 0.0, 0.0); // Disable specular lighting
+
-        diffuseLighting = specularOcclusion;
-        specularLighting = float3(0.0, 0.0, 0.0); // Disable specular lighting
+            diffuseLighting = specularOcclusion;
+            specularLighting = float3(0.0, 0.0, 0.0); // Disable specular lighting
-    #if GTAO_MULTIBOUNCE_APPROX
+
+#if GTAO_MULTIBOUNCE_APPROX
-        diffuseLighting = GTAOMultiBounce(indirectAmbientOcclusion, bsdfData.diffuseColor);
-        specularLighting = float3(0.0, 0.0, 0.0); // Disable specular lighting
+            diffuseLighting = GTAOMultiBounce(indirectAmbientOcclusion, bsdfData.diffuseColor);
+            specularLighting = float3(0.0, 0.0, 0.0); // Disable specular lighting
+
-        diffuseLighting = GTAOMultiBounce(specularOcclusion, bsdfData.fresnel0);
-        specularLighting = float3(0.0, 0.0, 0.0); // Disable specular lighting
-            break;
-    #endif
-        case DEBUGMIPMAPMODE_NONE:
-            diffuseLighting = bsdfData.diffuseColor;
+            diffuseLighting = GTAOMultiBounce(specularOcclusion, bsdfData.fresnel0);
+#endif
+
-    {
+            {
-        specularLighting = float3(0.0, 0.0, 0.0); // Disable specular lighting
-    }
+                specularLighting = float3(0.0, 0.0, 0.0); // Disable specular lighting
+            }
+        }
+    else if (_DebugMipMapMode != DEBUGMIPMAPMODE_NONE)
+    {
+        diffuseLighting = bsdfData.diffuseColor;
+        specularLighting = float3(0.0, 0.0, 0.0); // Disable specular lighting
+    }
+
 #endif
 }