Filling out HTile mask in DBuffer, fix for material foldout update on decal material change

ScriptableRenderPipeline/Core/CoreRP/CoreUtils.cs

             return mesh;
         }
 
-        public static void ResizeHTile(RenderTexture hTile, ref RenderTargetIdentifier hTileRT, RenderTextureDescriptor desc)
+		public static void ResizeHTile(ref RenderTexture hTile, ref RenderTargetIdentifier hTileRT, RenderTextureDescriptor desc)
-            hTile = CreateRenderTexture(desc, 0, RenderTextureFormat.R8, RenderTextureReadWrite.Linear); // DXGI_FORMAT_R8_UINT is not supported by Unity
+			hTile = CreateRenderTexture(desc, 0, RenderTextureFormat.R8, RenderTextureReadWrite.Linear); // DXGI_FORMAT_R8_UINT is not supported by Unity
-            hTileRT = new RenderTargetIdentifier(hTile);                        
+            hTileRT = new RenderTargetIdentifier(hTile);
         }
     }
 }

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Decal/DecalProjectorComponent.cs

             DecalSystem.instance.RemoveDecal(this);
         }
 
+		// Declare the method signature of the delegate to call.	
+		public delegate void OnMaterialChangeDelegate();
+
+		// Declare the event to which editor code will hook itself.
+		public event OnMaterialChangeDelegate OnMaterialChange;
+
         public void OnValidate()
         {
             // handle material changes
                 m_Material = tempMaterial;
                 DecalSystem.instance.AddDecal(this);
                 m_OldMaterial = m_Material;
+
+				if (OnMaterialChange != null)
+				{
+					OnMaterialChange();
+				}
             }
 
             if (m_Material != null)

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Editor/Material/Decal/DecalProjectorComponentEditor.cs

             // Create an instance of the MaterialEditor
             m_DecalProjectorComponent = (DecalProjectorComponent)target;
             m_MaterialEditor = (MaterialEditor)CreateEditor(m_DecalProjectorComponent.Mat);
+			m_DecalProjectorComponent.OnMaterialChange += new DecalProjectorComponent.OnMaterialChangeDelegate(this.OnMaterialChange);
+
+		private void OnDisable()
+		{
+			m_DecalProjectorComponent.OnMaterialChange -= new DecalProjectorComponent.OnMaterialChangeDelegate(this.OnMaterialChange);
+		}
+
+		public void OnMaterialChange()
+		{
+			if (m_MaterialEditor != null)
+			{
+				// Draw the material's foldout and the material shader field
+				m_MaterialEditor = (MaterialEditor)CreateEditor(m_DecalProjectorComponent.Mat);
+			}
+		}
 
         public override void OnInspectorGUI()
         {

ScriptableRenderPipeline/HDRenderPipeline/HDRP/HDRenderPipeline.cs

 
         public void Resize(HDCamera camera)
         {
-            CoreUtils.ResizeHTile(m_HTile, ref m_HTileRT, camera.renderTextureDesc);
+			CoreUtils.ResizeHTile(ref m_HTile, ref m_HTileRT, camera.renderTextureDesc);
         }
     }
 

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Material/SubsurfaceScattering/SubsurfaceScatteringManager.cs

 
         public void Resize(HDCamera hdCamera)
         {
-            CoreUtils.ResizeHTile(m_HTile, ref m_HTileRT, hdCamera.renderTextureDesc);
+            CoreUtils.ResizeHTile(ref m_HTile, ref m_HTileRT, hdCamera.renderTextureDesc);
         }
 
         public void PushGlobalParams(CommandBuffer cmd, DiffusionProfileSettings sssParameters, FrameSettings frameSettings)

ScriptableRenderPipeline/HDRenderPipeline/HDRP/ShaderPass/ShaderPassDBuffer.hlsl

     DecalSurfaceData surfaceData;
 	float3x3 decalToWorld = (float3x3)UNITY_ACCESS_INSTANCED_PROP(matrix, normalToWorld);
     GetSurfaceData(positionDS.xz, decalToWorld, surfaceData);
-	_DecalHTile[posInput.positionSS / 8] = 1.0f;
+	if((all(positionDS.xyz > 0.0f) && all(1.0f - positionDS.xyz > 0.0f)))
+	{
+		uint mask = 0;
+#if _COLORMAP
+		mask = 1;
+#endif
+#if _NORMALMAP
+		mask |= 2;
+#endif
+#if _MASKMAP
+		mask |= 4;
+#endif
+		uint oldVal = UnpackByte(_DecalHTile[posInput.positionSS.xy / 8]);
+		oldVal |= mask;
+		_DecalHTile[posInput.positionSS.xy / 8] = PackByte(oldVal);
+	}
 	ENCODE_INTO_DBUFFER(surfaceData, outDBuffer);
 }