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518 行
20 KiB
518 行
20 KiB
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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using UnityEditor.Experimental.UIElements;
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using UnityEditor.Graphing.Util;
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using UnityEngine;
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using UnityEditor.Graphing;
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using Object = UnityEngine.Object;
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using Edge = UnityEditor.Experimental.UIElements.GraphView.Edge;
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#if UNITY_2018_1
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using GeometryChangedEvent = UnityEngine.Experimental.UIElements.PostLayoutEvent;
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#else
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using GeometryChangedEvent = UnityEngine.Experimental.UIElements.GeometryChangedEvent;
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#endif
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namespace UnityEditor.ShaderGraph.Drawing
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{
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public class MaterialGraphEditWindow : EditorWindow
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{
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[SerializeField]
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string m_Selected;
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[SerializeField]
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GraphObject m_GraphObject;
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[NonSerialized]
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bool m_HasError;
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[NonSerialized]
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public bool forceRedrawPreviews = false;
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ColorSpace m_ColorSpace;
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GraphEditorView m_GraphEditorView;
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GraphEditorView graphEditorView
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{
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get { return m_GraphEditorView; }
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set
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{
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if (m_GraphEditorView != null)
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{
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m_GraphEditorView.RemoveFromHierarchy();
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m_GraphEditorView.Dispose();
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}
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m_GraphEditorView = value;
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if (m_GraphEditorView != null)
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{
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m_GraphEditorView.saveRequested += UpdateAsset;
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m_GraphEditorView.convertToSubgraphRequested += ToSubGraph;
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m_GraphEditorView.showInProjectRequested += PingAsset;
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this.GetRootVisualContainer().Add(graphEditorView);
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}
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}
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}
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GraphObject graphObject
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{
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get { return m_GraphObject; }
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set
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{
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if (m_GraphObject != null)
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DestroyImmediate(m_GraphObject);
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m_GraphObject = value;
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}
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}
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public string selectedGuid
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{
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get { return m_Selected; }
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private set { m_Selected = value; }
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}
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void Update()
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{
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if (m_HasError)
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return;
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if (PlayerSettings.colorSpace != m_ColorSpace)
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{
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graphEditorView = null;
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m_ColorSpace = PlayerSettings.colorSpace;
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}
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try
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{
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if (graphObject == null && selectedGuid != null)
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{
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var guid = selectedGuid;
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selectedGuid = null;
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Initialize(guid);
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}
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if (graphObject == null)
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{
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Close();
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return;
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}
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var materialGraph = graphObject.graph as AbstractMaterialGraph;
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if (materialGraph == null)
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return;
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if (graphEditorView == null)
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{
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var asset = AssetDatabase.LoadAssetAtPath<Object>(AssetDatabase.GUIDToAssetPath(selectedGuid));
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graphEditorView = new GraphEditorView(this, materialGraph, asset.name) { persistenceKey = selectedGuid };
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m_ColorSpace = PlayerSettings.colorSpace;
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}
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if (forceRedrawPreviews)
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{
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// Redraw all previews
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foreach (INode node in m_GraphObject.graph.GetNodes<INode>())
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node.Dirty(ModificationScope.Node);
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forceRedrawPreviews = false;
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}
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graphEditorView.HandleGraphChanges();
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graphObject.graph.ClearChanges();
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}
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catch (Exception e)
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{
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m_HasError = true;
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m_GraphEditorView = null;
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graphObject = null;
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Debug.LogException(e);
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throw;
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}
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}
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void OnDisable()
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{
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graphEditorView = null;
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}
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void OnDestroy()
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{
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if (graphObject != null)
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{
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if (graphObject.isDirty && EditorUtility.DisplayDialog("Shader Graph Has Been Modified", "Do you want to save the changes you made in the shader graph?\n\nYour changes will be lost if you don't save them.", "Save", "Don't Save"))
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UpdateAsset();
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Undo.ClearUndo(graphObject);
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DestroyImmediate(graphObject);
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}
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graphEditorView = null;
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}
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void UpdateDependantGraphs()
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{
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string[] lookFor = new string[] {"Assets"};
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var guids = AssetDatabase.FindAssets("t:shader", lookFor);
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foreach (string guid in guids)
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{
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if (AssetDatabase.GUIDToAssetPath(guid).ToLower().EndsWith(ShaderGraphImporter.ShaderGraphExtension))
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{
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var path = AssetDatabase.GUIDToAssetPath(guid);
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var textGraph = File.ReadAllText(path, Encoding.UTF8);
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var graph = JsonUtility.FromJson<MaterialGraph>(textGraph);
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graph.LoadedFromDisk();
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foreach (SubGraphNode graphNode in graph.GetNodes<SubGraphNode>())
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{
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var subpath = AssetDatabase.GetAssetPath(graphNode.subGraphAsset);
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var subguid = AssetDatabase.AssetPathToGUID(subpath);
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if (subguid == selectedGuid)
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{
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UpdateShaderGraphOnDisk(path, graph);
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}
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}
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}
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}
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}
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public void PingAsset()
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{
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if (selectedGuid != null)
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{
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var path = AssetDatabase.GUIDToAssetPath(selectedGuid);
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var asset = AssetDatabase.LoadAssetAtPath<Object>(path);
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EditorGUIUtility.PingObject(asset);
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}
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}
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public void UpdateAsset()
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{
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if (selectedGuid != null && graphObject != null)
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{
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var path = AssetDatabase.GUIDToAssetPath(selectedGuid);
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if (string.IsNullOrEmpty(path) || graphObject == null)
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return;
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if (m_GraphObject.graph.GetType() == typeof(MaterialGraph))
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UpdateShaderGraphOnDisk(path);
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if (m_GraphObject.graph.GetType() == typeof(SubGraph))
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UpdateAbstractSubgraphOnDisk<SubGraph>(path);
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graphObject.isDirty = false;
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var windows = Resources.FindObjectsOfTypeAll<MaterialGraphEditWindow>();
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foreach (var materialGraphEditWindow in windows)
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{
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materialGraphEditWindow.Rebuild();
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}
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}
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}
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public void ToSubGraph()
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{
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var path = EditorUtility.SaveFilePanelInProject("Save subgraph", "New SubGraph", "ShaderSubGraph", "");
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path = path.Replace(Application.dataPath, "Assets");
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if (path.Length == 0)
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return;
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graphObject.RegisterCompleteObjectUndo("Convert To Subgraph");
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var graphView = graphEditorView.graphView;
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var nodes = graphView.selection.OfType<MaterialNodeView>().Where(x => !(x.node is PropertyNode)).Select(x => x.node as INode).ToArray();
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var bounds = Rect.MinMaxRect(float.PositiveInfinity, float.PositiveInfinity, float.NegativeInfinity, float.NegativeInfinity);
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foreach (var node in nodes)
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{
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var center = node.drawState.position.center;
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bounds = Rect.MinMaxRect(
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Mathf.Min(bounds.xMin, center.x),
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Mathf.Min(bounds.yMin, center.y),
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Mathf.Max(bounds.xMax, center.x),
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Mathf.Max(bounds.yMax, center.y));
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}
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var middle = bounds.center;
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bounds.center = Vector2.zero;
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var copyPasteGraph = new CopyPasteGraph(
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graphView.selection.OfType<MaterialNodeView>().Where(x => !(x.node is PropertyNode)).Select(x => x.node as INode),
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graphView.selection.OfType<Edge>().Select(x => x.userData as IEdge));
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var deserialized = CopyPasteGraph.FromJson(JsonUtility.ToJson(copyPasteGraph, false));
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if (deserialized == null)
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return;
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var subGraph = new SubGraph();
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var subGraphOutputNode = new SubGraphOutputNode();
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{
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var drawState = subGraphOutputNode.drawState;
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drawState.position = new Rect(new Vector2(bounds.xMax + 200f, 0f), drawState.position.size);
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subGraphOutputNode.drawState = drawState;
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}
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subGraph.AddNode(subGraphOutputNode);
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var nodeGuidMap = new Dictionary<Guid, Guid>();
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foreach (var node in deserialized.GetNodes<INode>())
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{
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var oldGuid = node.guid;
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var newGuid = node.RewriteGuid();
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nodeGuidMap[oldGuid] = newGuid;
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var drawState = node.drawState;
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drawState.position = new Rect(drawState.position.position - middle, drawState.position.size);
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node.drawState = drawState;
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subGraph.AddNode(node);
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}
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// figure out what needs remapping
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var externalOutputSlots = new List<IEdge>();
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var externalInputSlots = new List<IEdge>();
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foreach (var edge in deserialized.edges)
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{
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var outputSlot = edge.outputSlot;
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var inputSlot = edge.inputSlot;
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Guid remappedOutputNodeGuid;
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Guid remappedInputNodeGuid;
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var outputSlotExistsInSubgraph = nodeGuidMap.TryGetValue(outputSlot.nodeGuid, out remappedOutputNodeGuid);
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var inputSlotExistsInSubgraph = nodeGuidMap.TryGetValue(inputSlot.nodeGuid, out remappedInputNodeGuid);
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// pasting nice internal links!
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if (outputSlotExistsInSubgraph && inputSlotExistsInSubgraph)
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{
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var outputSlotRef = new SlotReference(remappedOutputNodeGuid, outputSlot.slotId);
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var inputSlotRef = new SlotReference(remappedInputNodeGuid, inputSlot.slotId);
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subGraph.Connect(outputSlotRef, inputSlotRef);
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}
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// one edge needs to go to outside world
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else if (outputSlotExistsInSubgraph)
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{
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externalInputSlots.Add(edge);
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}
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else if (inputSlotExistsInSubgraph)
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{
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externalOutputSlots.Add(edge);
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}
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}
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// Find the unique edges coming INTO the graph
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var uniqueIncomingEdges = externalOutputSlots.GroupBy(
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edge => edge.outputSlot,
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edge => edge,
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(key, edges) => new { slotRef = key, edges = edges.ToList() });
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var externalInputNeedingConnection = new List<KeyValuePair<IEdge, IShaderProperty>>();
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foreach (var group in uniqueIncomingEdges)
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{
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var sr = group.slotRef;
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var fromNode = graphObject.graph.GetNodeFromGuid(sr.nodeGuid);
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var fromSlot = fromNode.FindOutputSlot<MaterialSlot>(sr.slotId);
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IShaderProperty prop;
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switch (fromSlot.concreteValueType)
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{
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case ConcreteSlotValueType.Texture2D:
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prop = new TextureShaderProperty();
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break;
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case ConcreteSlotValueType.Cubemap:
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prop = new CubemapShaderProperty();
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break;
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case ConcreteSlotValueType.Vector4:
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prop = new Vector4ShaderProperty();
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break;
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case ConcreteSlotValueType.Vector3:
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prop = new Vector3ShaderProperty();
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break;
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case ConcreteSlotValueType.Vector2:
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prop = new Vector2ShaderProperty();
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break;
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case ConcreteSlotValueType.Vector1:
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prop = new Vector1ShaderProperty();
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break;
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case ConcreteSlotValueType.Boolean:
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prop = new BooleanShaderProperty();
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break;
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default:
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throw new ArgumentOutOfRangeException();
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}
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if (prop != null)
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{
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var materialGraph = (AbstractMaterialGraph)graphObject.graph;
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var fromPropertyNode = fromNode as PropertyNode;
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var fromProperty = fromPropertyNode != null ? materialGraph.properties.FirstOrDefault(p => p.guid == fromPropertyNode.propertyGuid) : null;
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prop.displayName = fromProperty != null ? fromProperty.displayName : fromNode.name;
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subGraph.AddShaderProperty(prop);
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var propNode = new PropertyNode();
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{
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var drawState = propNode.drawState;
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drawState.position = new Rect(new Vector2(bounds.xMin - 300f, 0f), drawState.position.size);
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propNode.drawState = drawState;
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}
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subGraph.AddNode(propNode);
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propNode.propertyGuid = prop.guid;
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foreach (var edge in group.edges)
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{
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subGraph.Connect(
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new SlotReference(propNode.guid, PropertyNode.OutputSlotId),
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new SlotReference(nodeGuidMap[edge.inputSlot.nodeGuid], edge.inputSlot.slotId));
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externalInputNeedingConnection.Add(new KeyValuePair<IEdge, IShaderProperty>(edge, prop));
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}
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}
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}
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var uniqueOutgoingEdges = externalInputSlots.GroupBy(
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edge => edge.inputSlot,
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edge => edge,
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(key, edges) => new { slot = key, edges = edges.ToList() });
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var externalOutputsNeedingConnection = new List<KeyValuePair<IEdge, IEdge>>();
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foreach (var group in uniqueOutgoingEdges)
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{
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var outputNode = subGraph.outputNode;
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var slotId = outputNode.AddSlot();
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var inputSlotRef = new SlotReference(outputNode.guid, slotId);
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foreach (var edge in group.edges)
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{
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var newEdge = subGraph.Connect(new SlotReference(nodeGuidMap[edge.outputSlot.nodeGuid], edge.outputSlot.slotId), inputSlotRef);
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externalOutputsNeedingConnection.Add(new KeyValuePair<IEdge, IEdge>(edge, newEdge));
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}
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}
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File.WriteAllText(path, EditorJsonUtility.ToJson(subGraph));
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AssetDatabase.ImportAsset(path);
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var loadedSubGraph = AssetDatabase.LoadAssetAtPath(path, typeof(MaterialSubGraphAsset)) as MaterialSubGraphAsset;
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if (loadedSubGraph == null)
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return;
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var subGraphNode = new SubGraphNode();
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var ds = subGraphNode.drawState;
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ds.position = new Rect(middle - new Vector2(100f, 150f), Vector2.zero);
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subGraphNode.drawState = ds;
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graphObject.graph.AddNode(subGraphNode);
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subGraphNode.subGraphAsset = loadedSubGraph;
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foreach (var edgeMap in externalInputNeedingConnection)
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{
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graphObject.graph.Connect(edgeMap.Key.outputSlot, new SlotReference(subGraphNode.guid, edgeMap.Value.guid.GetHashCode()));
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}
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foreach (var edgeMap in externalOutputsNeedingConnection)
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{
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graphObject.graph.Connect(new SlotReference(subGraphNode.guid, edgeMap.Value.inputSlot.slotId), edgeMap.Key.inputSlot);
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}
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graphObject.graph.RemoveElements(
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graphView.selection.OfType<MaterialNodeView>().Select(x => x.node as INode),
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Enumerable.Empty<IEdge>());
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graphObject.graph.ValidateGraph();
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}
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void UpdateAbstractSubgraphOnDisk<T>(string path) where T : SubGraph
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{
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var graph = graphObject.graph as T;
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if (graph == null)
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return;
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File.WriteAllText(path, EditorJsonUtility.ToJson(graph, true));
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AssetDatabase.ImportAsset(path);
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UpdateDependantGraphs();
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}
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void UpdateShaderGraphOnDisk(string path)
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{
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var graph = graphObject.graph as IShaderGraph;
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if (graph == null)
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return;
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UpdateShaderGraphOnDisk(path, graph);
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}
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static void UpdateShaderGraphOnDisk(string path, IShaderGraph graph)
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{
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var shaderImporter = AssetImporter.GetAtPath(path) as ShaderGraphImporter;
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if (shaderImporter == null)
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return;
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File.WriteAllText(path, EditorJsonUtility.ToJson(graph, true));
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shaderImporter.SaveAndReimport();
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AssetDatabase.ImportAsset(path);
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}
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private void Rebuild()
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{
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if (graphObject != null && graphObject.graph != null)
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{
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var subNodes = graphObject.graph.GetNodes<SubGraphNode>();
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foreach (var node in subNodes)
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node.UpdateSlots();
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}
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}
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public void Initialize(string assetGuid)
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{
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try
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{
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m_ColorSpace = PlayerSettings.colorSpace;
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var asset = AssetDatabase.LoadAssetAtPath<Object>(AssetDatabase.GUIDToAssetPath(assetGuid));
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if (asset == null)
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return;
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if (!EditorUtility.IsPersistent(asset))
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return;
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if (selectedGuid == assetGuid)
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return;
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var path = AssetDatabase.GetAssetPath(asset);
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var extension = Path.GetExtension(path);
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Type graphType;
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switch (extension)
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{
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case ".ShaderGraph":
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graphType = typeof(MaterialGraph);
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break;
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case ".ShaderSubGraph":
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graphType = typeof(SubGraph);
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break;
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default:
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return;
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}
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selectedGuid = assetGuid;
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var textGraph = File.ReadAllText(path, Encoding.UTF8);
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graphObject = CreateInstance<GraphObject>();
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graphObject.hideFlags = HideFlags.HideAndDontSave;
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graphObject.graph = JsonUtility.FromJson(textGraph, graphType) as IGraph;
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graphObject.graph.OnEnable();
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graphObject.graph.ValidateGraph();
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graphEditorView = new GraphEditorView(this, m_GraphObject.graph as AbstractMaterialGraph, asset.name) { persistenceKey = selectedGuid };
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graphEditorView.RegisterCallback<GeometryChangedEvent>(OnGeometryChanged);
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titleContent = new GUIContent(asset.name);
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Repaint();
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}
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catch (Exception)
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{
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m_HasError = true;
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m_GraphEditorView = null;
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graphObject = null;
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throw;
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}
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}
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void OnGeometryChanged(GeometryChangedEvent evt)
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{
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graphEditorView.UnregisterCallback<GeometryChangedEvent>(OnGeometryChanged);
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graphEditorView.graphView.FrameAll();
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}
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}
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}
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