Remove the redundant +1

ScriptableRenderPipeline/HDRenderPipeline/Debug/DebugDisplay.cs

         public enum DebugViewGbuffer
         {
             None = 0,
-            Depth = DebugViewVarying.Last + 1,
+            Depth = DebugViewVarying.Last,
             BakeDiffuseLightingWithAlbedoPlusEmissive,
             BakeShadowMask0,
             BakeShadowMask1,
         public enum DebugViewProperties
         {
             None = 0,
-            Tessellation = DebugViewGbuffer.Last + 1,
+            Tessellation = DebugViewGbuffer.Last,
             PixelDisplacement,
             VertexDisplacement,
             TessellationDisplacement,

ScriptableRenderPipeline/HDRenderPipeline/Debug/DebugDisplay.cs.hlsl

 // UnityEngine.Experimental.Rendering.HDPipeline.Attributes.DebugViewGbuffer:  static fields
 //
 #define DEBUGVIEWGBUFFER_NONE (0)
-#define DEBUGVIEWGBUFFER_DEPTH (11)
-#define DEBUGVIEWGBUFFER_BAKE_DIFFUSE_LIGHTING_WITH_ALBEDO_PLUS_EMISSIVE (12)
-#define DEBUGVIEWGBUFFER_BAKE_SHADOW_MASK0 (13)
-#define DEBUGVIEWGBUFFER_BAKE_SHADOW_MASK1 (14)
-#define DEBUGVIEWGBUFFER_BAKE_SHADOW_MASK2 (15)
-#define DEBUGVIEWGBUFFER_BAKE_SHADOW_MASK3 (16)
-#define DEBUGVIEWGBUFFER_LAST (17)
+#define DEBUGVIEWGBUFFER_DEPTH (10)
+#define DEBUGVIEWGBUFFER_BAKE_DIFFUSE_LIGHTING_WITH_ALBEDO_PLUS_EMISSIVE (11)
+#define DEBUGVIEWGBUFFER_BAKE_SHADOW_MASK0 (12)
+#define DEBUGVIEWGBUFFER_BAKE_SHADOW_MASK1 (13)
+#define DEBUGVIEWGBUFFER_BAKE_SHADOW_MASK2 (14)
+#define DEBUGVIEWGBUFFER_BAKE_SHADOW_MASK3 (15)
+#define DEBUGVIEWGBUFFER_LAST (16)
-#define DEBUGVIEWPROPERTIES_TESSELLATION (18)
-#define DEBUGVIEWPROPERTIES_PIXEL_DISPLACEMENT (19)
-#define DEBUGVIEWPROPERTIES_VERTEX_DISPLACEMENT (20)
-#define DEBUGVIEWPROPERTIES_TESSELLATION_DISPLACEMENT (21)
-#define DEBUGVIEWPROPERTIES_DEPTH_OFFSET (22)
-#define DEBUGVIEWPROPERTIES_LIGHTMAP (23)
+#define DEBUGVIEWPROPERTIES_TESSELLATION (16)
+#define DEBUGVIEWPROPERTIES_PIXEL_DISPLACEMENT (17)
+#define DEBUGVIEWPROPERTIES_VERTEX_DISPLACEMENT (18)
+#define DEBUGVIEWPROPERTIES_TESSELLATION_DISPLACEMENT (19)
+#define DEBUGVIEWPROPERTIES_DEPTH_OFFSET (20)
+#define DEBUGVIEWPROPERTIES_LIGHTMAP (21)
 
 //
 // UnityEngine.Experimental.Rendering.HDPipeline.FullScreenDebugMode:  static fields