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527 行
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using System;
using System.Collections.Generic;
using System.Linq;
using UnityEditor.Experimental.UIElements.GraphView;
using UnityEditor.Graphing.Util;
using UnityEngine;
using UnityEditor.Graphing;
using UnityEngine.Experimental.UIElements;
using Edge = UnityEditor.Experimental.UIElements.GraphView.Edge;
using Node = UnityEditor.Experimental.UIElements.GraphView.Node;
using Object = UnityEngine.Object;
using UnityEditor.Graphs;
namespace UnityEditor.ShaderGraph.Drawing
{
public sealed class MaterialGraphView : GraphView
{
public MaterialGraphView()
{
AddStyleSheetPath("Styles/MaterialGraphView");
serializeGraphElements = SerializeGraphElementsImplementation;
canPasteSerializedData = CanPasteSerializedDataImplementation;
unserializeAndPaste = UnserializeAndPasteImplementation;
deleteSelection = DeleteSelectionImplementation;
RegisterCallback<DragUpdatedEvent>(OnDragUpdatedEvent);
RegisterCallback<DragPerformEvent>(OnDragPerformEvent);
}
protected override bool canCopySelection
{
get { return selection.OfType<Node>().Any() || selection.OfType<GroupNode>().Any() || selection.OfType<BlackboardField>().Any(); }
}
public MaterialGraphView(AbstractMaterialGraph graph) : this()
{
this.graph = graph;
}
public AbstractMaterialGraph graph { get; private set; }
public Action onConvertToSubgraphClick { get; set; }
public override List<Port> GetCompatiblePorts(Port startAnchor, NodeAdapter nodeAdapter)
{
var compatibleAnchors = new List<Port>();
var startSlot = startAnchor.GetSlot();
if (startSlot == null)
return compatibleAnchors;
var startStage = startSlot.stageCapability;
if (startStage == ShaderStageCapability.All)
startStage = NodeUtils.GetEffectiveShaderStageCapability(startSlot, true) & NodeUtils.GetEffectiveShaderStageCapability(startSlot, false);
foreach (var candidateAnchor in ports.ToList())
{
var candidateSlot = candidateAnchor.GetSlot();
if (!startSlot.IsCompatibleWith(candidateSlot))
continue;
if (startStage != ShaderStageCapability.All)
{
var candidateStage = candidateSlot.stageCapability;
if (candidateStage == ShaderStageCapability.All)
candidateStage = NodeUtils.GetEffectiveShaderStageCapability(candidateSlot, true)
& NodeUtils.GetEffectiveShaderStageCapability(candidateSlot, false);
if (candidateStage != ShaderStageCapability.All && candidateStage != startStage)
continue;
}
compatibleAnchors.Add(candidateAnchor);
}
return compatibleAnchors;
}
public override void BuildContextualMenu(ContextualMenuPopulateEvent evt)
{
base.BuildContextualMenu(evt);
if (evt.target is GraphView || evt.target is Node)
{
evt.menu.AppendAction("Convert To Sub-graph", ConvertToSubgraph, ConvertToSubgraphStatus);
evt.menu.AppendAction("Convert To Inline Node", ConvertToInlineNode, ConvertToInlineNodeStatus);
evt.menu.AppendAction("Convert To Property", ConvertToProperty, ConvertToPropertyStatus);
if (selection.OfType<MaterialNodeView>().Count() == 1)
{
evt.menu.AppendSeparator();
evt.menu.AppendAction("Open Documentation", SeeDocumentation, SeeDocumentationStatus);
}
if (selection.OfType<MaterialNodeView>().Count() == 1 && selection.OfType<MaterialNodeView>().First().node is SubGraphNode)
{
evt.menu.AppendSeparator();
evt.menu.AppendAction("Open Sub Graph", OpenSubGraph, ContextualMenu.MenuAction.StatusFlags.Normal);
}
}
else if (evt.target is BlackboardField)
{
evt.menu.AppendAction("Delete", (e) => DeleteSelectionImplementation("Delete", AskUser.DontAskUser), (e) => canDeleteSelection ? ContextualMenu.MenuAction.StatusFlags.Normal : ContextualMenu.MenuAction.StatusFlags.Disabled);
}
if (evt.target is MaterialGraphView)
{
evt.menu.AppendAction("Collapse Previews", CollapsePreviews, ContextualMenu.MenuAction.StatusFlags.Normal);
evt.menu.AppendAction("Expand Previews", ExpandPreviews, ContextualMenu.MenuAction.StatusFlags.Normal);
evt.menu.AppendSeparator();
}
}
void CollapsePreviews()
{
graph.owner.RegisterCompleteObjectUndo("Collapse Previews");
foreach (AbstractMaterialNode node in graph.GetNodes<AbstractMaterialNode>())
{
node.previewExpanded = false;
}
}
void ExpandPreviews()
{
graph.owner.RegisterCompleteObjectUndo("Expand Previews");
foreach (AbstractMaterialNode node in graph.GetNodes<AbstractMaterialNode>())
{
node.previewExpanded = true;
}
}
void SeeDocumentation()
{
var node = selection.OfType<MaterialNodeView>().First().node;
if (node.documentationURL != null)
System.Diagnostics.Process.Start(node.documentationURL);
}
void OpenSubGraph()
{
SubGraphNode subgraphNode = selection.OfType<MaterialNodeView>().First().node as SubGraphNode;
var path = AssetDatabase.GetAssetPath(subgraphNode.subGraphAsset);
ShaderGraphImporterEditor.ShowGraphEditWindow(path);
}
ContextualMenu.MenuAction.StatusFlags SeeDocumentationStatus()
{
if (selection.OfType<MaterialNodeView>().First().node.documentationURL == null)
return ContextualMenu.MenuAction.StatusFlags.Disabled;
return ContextualMenu.MenuAction.StatusFlags.Normal;
}
ContextualMenu.MenuAction.StatusFlags ConvertToPropertyStatus()
{
if (selection.OfType<MaterialNodeView>().Any(v => v.node != null))
{
if (selection.OfType<MaterialNodeView>().Any(v => v.node is IPropertyFromNode))
return ContextualMenu.MenuAction.StatusFlags.Normal;
return ContextualMenu.MenuAction.StatusFlags.Disabled;
}
return ContextualMenu.MenuAction.StatusFlags.Hidden;
}
void ConvertToProperty()
{
var selectedNodeViews = selection.OfType<MaterialNodeView>().Select(x => x.node).ToList();
foreach (var node in selectedNodeViews)
{
if (!(node is IPropertyFromNode))
continue;
var converter = node as IPropertyFromNode;
var prop = converter.AsShaderProperty();
graph.AddShaderProperty(prop);
var propNode = new PropertyNode();
propNode.drawState = node.drawState;
graph.AddNode(propNode);
propNode.propertyGuid = prop.guid;
var oldSlot = node.FindSlot<MaterialSlot>(converter.outputSlotId);
var newSlot = propNode.FindSlot<MaterialSlot>(PropertyNode.OutputSlotId);
foreach (var edge in graph.GetEdges(oldSlot.slotReference))
graph.Connect(newSlot.slotReference, edge.inputSlot);
graph.RemoveNode(node);
}
}
ContextualMenu.MenuAction.StatusFlags ConvertToInlineNodeStatus()
{
if (selection.OfType<MaterialNodeView>().Any(v => v.node != null))
{
if (selection.OfType<MaterialNodeView>().Any(v => v.node is PropertyNode))
return ContextualMenu.MenuAction.StatusFlags.Normal;
return ContextualMenu.MenuAction.StatusFlags.Disabled;
}
return ContextualMenu.MenuAction.StatusFlags.Hidden;
}
void ConvertToInlineNode()
{
var selectedNodeViews = selection.OfType<MaterialNodeView>()
.Select(x => x.node)
.OfType<PropertyNode>();
foreach (var propNode in selectedNodeViews)
((AbstractMaterialGraph)propNode.owner).ReplacePropertyNodeWithConcreteNode(propNode);
}
ContextualMenu.MenuAction.StatusFlags ConvertToSubgraphStatus()
{
if (onConvertToSubgraphClick == null) return ContextualMenu.MenuAction.StatusFlags.Hidden;
return selection.OfType<MaterialNodeView>().Any(v => v.node != null) ? ContextualMenu.MenuAction.StatusFlags.Normal : ContextualMenu.MenuAction.StatusFlags.Hidden;
}
void ConvertToSubgraph()
{
onConvertToSubgraphClick();
}
string SerializeGraphElementsImplementation(IEnumerable<GraphElement> elements)
{
var nodes = elements.OfType<MaterialNodeView>().Select(x => (INode)x.node);
var edges = elements.OfType<Edge>().Select(x => x.userData).OfType<IEdge>();
var properties = selection.OfType<BlackboardField>().Select(x => x.userData as IShaderProperty);
// Collect the property nodes and get the corresponding properties
var propertyNodeGuids = nodes.OfType<PropertyNode>().Select(x => x.propertyGuid);
var metaProperties = this.graph.properties.Where(x => propertyNodeGuids.Contains(x.guid));
var graph = new CopyPasteGraph(this.graph.guid, nodes, edges, properties, metaProperties);
return JsonUtility.ToJson(graph, true);
}
bool CanPasteSerializedDataImplementation(string serializedData)
{
return CopyPasteGraph.FromJson(serializedData) != null;
}
void UnserializeAndPasteImplementation(string operationName, string serializedData)
{
graph.owner.RegisterCompleteObjectUndo(operationName);
var pastedGraph = CopyPasteGraph.FromJson(serializedData);
this.InsertCopyPasteGraph(pastedGraph);
}
void DeleteSelectionImplementation(string operationName, GraphView.AskUser askUser)
{
foreach (var selectable in selection)
{
var field = selectable as BlackboardField;
if (field != null && field.userData != null)
{
if (EditorUtility.DisplayDialog("Sub Graph Will Change", "If you remove a property and save the sub graph, you might change other graphs that are using this sub graph.\n\nDo you want to continue?", "Yes", "No"))
break;
return;
}
}
graph.owner.RegisterCompleteObjectUndo(operationName);
graph.RemoveElements(selection.OfType<MaterialNodeView>().Where(v => !(v.node is SubGraphOutputNode)).Select(x => (INode)x.node), selection.OfType<Edge>().Select(x => x.userData).OfType<IEdge>());
foreach (var selectable in selection)
{
var field = selectable as BlackboardField;
if (field != null && field.userData != null)
{
var property = (IShaderProperty)field.userData;
graph.RemoveShaderProperty(property.guid);
}
}
selection.Clear();
}
#region Drag and drop
static bool ValidateObjectForDrop(Object obj)
{
return EditorUtility.IsPersistent(obj) && (obj is Texture2D || obj is Cubemap || obj is MaterialSubGraphAsset || obj is Texture2DArray || obj is Texture3D);
}
static void OnDragUpdatedEvent(DragUpdatedEvent e)
{
var selection = DragAndDrop.GetGenericData("DragSelection") as List<ISelectable>;
bool dragging = false;
if (selection != null)
{
// Blackboard
if (selection.OfType<BlackboardField>().Any())
dragging = true;
}
else
{
// Handle unity objects
var objects = DragAndDrop.objectReferences;
foreach (Object obj in objects)
{
if (ValidateObjectForDrop(obj))
{
dragging = true;
break;
}
}
}
if (dragging)
{
DragAndDrop.visualMode = DragAndDropVisualMode.Generic;
}
}
void OnDragPerformEvent(DragPerformEvent e)
{
Vector2 localPos = (e.currentTarget as VisualElement).ChangeCoordinatesTo(contentViewContainer, e.localMousePosition);
var selection = DragAndDrop.GetGenericData("DragSelection") as List<ISelectable>;
if (selection != null)
{
// Blackboard
if (selection.OfType<BlackboardField>().Any())
{
IEnumerable<BlackboardField> fields = selection.OfType<BlackboardField>();
foreach (BlackboardField field in fields)
{
CreateNode(field, localPos);
}
}
}
else
{
// Handle unity objects
var objects = DragAndDrop.objectReferences;
foreach (Object obj in objects)
{
if (ValidateObjectForDrop(obj))
{
CreateNode(obj, localPos);
}
}
}
}
void CreateNode(object obj, Vector2 nodePosition)
{
var texture2D = obj as Texture2D;
if (texture2D != null)
{
graph.owner.RegisterCompleteObjectUndo("Drag Texture");
bool isNormalMap = false;
if (EditorUtility.IsPersistent(texture2D) && !string.IsNullOrEmpty(AssetDatabase.GetAssetPath(texture2D)))
{
var importer = AssetImporter.GetAtPath(AssetDatabase.GetAssetPath(texture2D)) as TextureImporter;
if (importer != null)
isNormalMap = importer.textureType == TextureImporterType.NormalMap;
}
var node = new SampleTexture2DNode();
if (isNormalMap)
node.textureType = TextureType.Normal;
var drawState = node.drawState;
drawState.position = new Rect(nodePosition, drawState.position.size);
node.drawState = drawState;
graph.AddNode(node);
var inputslot = node.FindInputSlot<Texture2DInputMaterialSlot>(SampleTexture2DNode.TextureInputId);
if (inputslot != null)
inputslot.texture = texture2D;
}
var textureArray = obj as Texture2DArray;
if (textureArray != null)
{
graph.owner.RegisterCompleteObjectUndo("Drag Texture Array");
var property = new Texture2DArrayShaderProperty { displayName = textureArray.name, value = { textureArray = textureArray } };
graph.AddShaderProperty(property);
var node = new SampleTexture2DArrayNode();
var drawState = node.drawState;
drawState.position = new Rect(nodePosition, drawState.position.size);
node.drawState = drawState;
graph.AddNode(node);
var inputslot = node.FindSlot<Texture2DArrayInputMaterialSlot>(SampleTexture2DArrayNode.TextureInputId);
if (inputslot != null)
inputslot.textureArray = textureArray;
}
var texture3D = obj as Texture3D;
if (texture3D != null)
{
graph.owner.RegisterCompleteObjectUndo("Drag Texture 3D");
var property = new Texture3DShaderProperty { displayName = texture3D.name, value = { texture = texture3D } };
graph.AddShaderProperty(property);
var node = new SampleTexture3DNode();
var drawState = node.drawState;
drawState.position = new Rect(nodePosition, drawState.position.size);
node.drawState = drawState;
graph.AddNode(node);
var inputslot = node.FindSlot<Texture3DInputMaterialSlot>(SampleTexture3DNode.TextureInputId);
if (inputslot != null)
inputslot.texture = texture3D;
}
var cubemap = obj as Cubemap;
if (cubemap != null)
{
graph.owner.RegisterCompleteObjectUndo("Drag Cubemap");
var property = new CubemapShaderProperty { displayName = cubemap.name, value = { cubemap = cubemap } };
graph.AddShaderProperty(property);
var node = new SampleCubemapNode();
var drawState = node.drawState;
drawState.position = new Rect(nodePosition, drawState.position.size);
node.drawState = drawState;
graph.AddNode(node);
var inputslot = node.FindInputSlot<CubemapInputMaterialSlot>(SampleCubemapNode.CubemapInputId);
if (inputslot != null)
inputslot.cubemap = cubemap;
}
var subGraphAsset = obj as MaterialSubGraphAsset;
if (subGraphAsset != null)
{
graph.owner.RegisterCompleteObjectUndo("Drag Sub-Graph");
var node = new SubGraphNode();
var drawState = node.drawState;
drawState.position = new Rect(nodePosition, drawState.position.size);
node.drawState = drawState;
node.subGraphAsset = subGraphAsset;
graph.AddNode(node);
}
var blackboardField = obj as BlackboardField;
if (blackboardField != null)
{
IShaderProperty property = blackboardField.userData as IShaderProperty;
if (property != null)
{
graph.owner.RegisterCompleteObjectUndo("Drag Property");
var node = new PropertyNode();
var drawState = node.drawState;
drawState.position = new Rect(nodePosition, drawState.position.size);
node.drawState = drawState;
graph.AddNode(node);
node.propertyGuid = property.guid;
}
}
}
#endregion
}
public static class GraphViewExtensions
{
internal static void InsertCopyPasteGraph(this MaterialGraphView graphView, CopyPasteGraph copyGraph)
{
if (copyGraph == null)
return;
// Make new properties from the copied graph
foreach (IShaderProperty property in copyGraph.properties)
{
string propertyName = graphView.graph.SanitizePropertyName(property.displayName);
IShaderProperty copiedProperty = property.Copy();
copiedProperty.displayName = propertyName;
graphView.graph.AddShaderProperty(copiedProperty);
// Update the property nodes that depends on the copied node
var dependentPropertyNodes = copyGraph.GetNodes<PropertyNode>().Where(x => x.propertyGuid == property.guid);
foreach (var node in dependentPropertyNodes)
{
node.owner = graphView.graph;
node.propertyGuid = copiedProperty.guid;
}
}
using (var remappedNodesDisposable = ListPool<INode>.GetDisposable())
{
using (var remappedEdgesDisposable = ListPool<IEdge>.GetDisposable())
{
var remappedNodes = remappedNodesDisposable.value;
var remappedEdges = remappedEdgesDisposable.value;
graphView.graph.PasteGraph(copyGraph, remappedNodes, remappedEdges);
if (graphView.graph.guid != copyGraph.sourceGraphGuid)
{
// Compute the mean of the copied nodes.
Vector2 centroid = Vector2.zero;
var count = 1;
foreach (var node in remappedNodes)
{
var position = node.drawState.position.position;
centroid = centroid + (position - centroid) / count;
++count;
}
// Get the center of the current view
var viewCenter = graphView.contentViewContainer.WorldToLocal(graphView.layout.center);
foreach (var node in remappedNodes)
{
var drawState = node.drawState;
var positionRect = drawState.position;
var position = positionRect.position;
position += viewCenter - centroid;
positionRect.position = position;
drawState.position = positionRect;
node.drawState = drawState;
}
}
// Add new elements to selection
graphView.ClearSelection();
graphView.graphElements.ForEach(element =>
{
var edge = element as Edge;
if (edge != null && remappedEdges.Contains(edge.userData as IEdge))
graphView.AddToSelection(edge);
var nodeView = element as MaterialNodeView;
if (nodeView != null && remappedNodes.Contains(nodeView.node))
graphView.AddToSelection(nodeView);
});
}
}
}
}
}