Added DepthOnly pass to LW shaders.

ScriptableRenderPipeline/LightweightPipeline/Shaders/LightweightPipeline.shader

             ENDCG
         }
 
+        Pass
+        {
+            Tags{"Lightmode" = "DepthOnly"}
+
+            ZWrite On
+
+            CGPROGRAM
+            #pragma target 2.0
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #include "UnityCG.cginc"
+
+            float4 vert(float4 pos : POSITION) : SV_POSITION
+            {
+                return UnityObjectToClipPos(pos);
+            }
+
+            half4 frag() : SV_TARGET
+            {
+                return 0;
+            }
+            ENDCG
+        }
+
         // This pass it not used during regular rendering, only for lightmap baking.
         Pass
         {

ScriptableRenderPipeline/LightweightPipeline/Shaders/LightweightStandardShader.shader

             }
             ENDCG
         }
+
+        Pass
+        {
+            Tags{"Lightmode" = "DepthOnly"}
+
+            ZWrite On
+
+            CGPROGRAM
+            #pragma target 2.0
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #include "UnityCG.cginc"
+
+            float4 vert(float4 pos : POSITION) : SV_POSITION
+            {
+                return UnityObjectToClipPos(pos);
+            }
+
+            half4 frag() : SV_TARGET
+            {
+                return 0;
+            }
+            ENDCG
+        }
-    FallBack "VertexLit"
+    FallBack "Standard"
     CustomEditor "LightweightStandardShaderGUI"
 }