Disable a number of scene view draw modes for LWRP

ScriptableRenderPipeline/LightweightPipeline/LWRP/LightweightPipeline.cs

 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Text;
+#if UNITY_EDITOR
+using UnityEditor.Experimental.Rendering.LightweightPipeline;
+#endif
 using UnityEngine.Experimental.GlobalIllumination;
 using UnityEngine.Rendering;
 using UnityEngine.Rendering.PostProcessing;
             CoreUtils.Destroy(m_ErrorMaterial);
             CoreUtils.Destroy(m_CopyDepthMaterial);
             CoreUtils.Destroy(m_BlitMaterial);
+
+#if UNITY_EDITOR
+            SceneViewDrawMode.ResetDrawMode();
+#endif
         }
 
         private void SetRenderingFeatures()
                 rendererSupportsReceiveShadows = true,
                 rendererSupportsReflectionProbes = true
             };
+            SceneViewDrawMode.SetupDrawMode();
 #endif
         }
 

ScriptableRenderPipeline/LightweightPipeline/LWRP/SceneViewDrawMode.cs

+#if UNITY_EDITOR
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace UnityEditor.Experimental.Rendering.LightweightPipeline
+{
+    internal static class SceneViewDrawMode
+    {
+        static bool RejectDrawMode(SceneView.CameraMode cameraMode)
+        {
+            if (cameraMode.drawMode == DrawCameraMode.TexturedWire ||
+                cameraMode.drawMode == DrawCameraMode.ShadowCascades ||
+                cameraMode.drawMode == DrawCameraMode.RenderPaths ||
+                cameraMode.drawMode == DrawCameraMode.AlphaChannel ||
+                cameraMode.drawMode == DrawCameraMode.Overdraw ||
+                cameraMode.drawMode == DrawCameraMode.Mipmaps ||
+                cameraMode.drawMode == DrawCameraMode.SpriteMask ||
+                cameraMode.drawMode == DrawCameraMode.DeferredDiffuse ||
+                cameraMode.drawMode == DrawCameraMode.DeferredSpecular ||
+                cameraMode.drawMode == DrawCameraMode.DeferredSmoothness ||
+                cameraMode.drawMode == DrawCameraMode.DeferredNormal ||
+                cameraMode.drawMode == DrawCameraMode.ValidateAlbedo ||
+                cameraMode.drawMode == DrawCameraMode.ValidateMetalSpecular ||
+                cameraMode.drawMode == DrawCameraMode.ShadowMasks ||
+                cameraMode.drawMode == DrawCameraMode.LightOverlap
+            )
+                return false;
+
+            return true;
+        }
+
+        public static void SetupDrawMode()
+        {
+            ArrayList sceneViewArray = SceneView.sceneViews;
+            foreach (SceneView sceneView in sceneViewArray)
+                sceneView.onValidateCameraMode += RejectDrawMode;
+        }
+
+        public static void ResetDrawMode()
+        {
+            ArrayList sceneViewArray = SceneView.sceneViews;
+            foreach (SceneView sceneView in sceneViewArray)
+                sceneView.onValidateCameraMode -= RejectDrawMode;
+        }
+    }
+}
+#endif

ScriptableRenderPipeline/LightweightPipeline/LWRP/SceneViewDrawMode.cs.meta

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