Boat Attack使用了Universal RP的许多新图形功能,可以用于探索 Universal RP 的使用方式和技巧。
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using UnityEngine;
using UnityEditor.Graphing;
using UnityEditor.Graphing.Util;
using Debug = UnityEngine.Debug;
using Object = UnityEngine.Object;
using UnityEngine.Rendering;
using UnityEditor.UIElements;
using Edge = UnityEditor.Experimental.GraphView.Edge;
using UnityEditor.Experimental.GraphView;
using UnityEditor.ShaderGraph.Internal;
using UnityEngine.UIElements;
using UnityEditor.VersionControl;
namespace UnityEditor.ShaderGraph.Drawing
{
class MaterialGraphEditWindow : EditorWindow
{
[SerializeField]
string m_Selected;
[SerializeField]
GraphObject m_GraphObject;
[NonSerialized]
bool m_HasError;
[NonSerialized]
HashSet<string> m_ChangedFileDependencies = new HashSet<string>();
ColorSpace m_ColorSpace;
RenderPipelineAsset m_RenderPipelineAsset;
bool m_FrameAllAfterLayout;
bool m_ProTheme;
GraphEditorView m_GraphEditorView;
MessageManager m_MessageManager;
MessageManager messageManager
{
get { return m_MessageManager ?? (m_MessageManager = new MessageManager()); }
}
GraphEditorView graphEditorView
{
get { return m_GraphEditorView; }
set
{
if (m_GraphEditorView != null)
{
m_GraphEditorView.RemoveFromHierarchy();
m_GraphEditorView.Dispose();
}
m_GraphEditorView = value;
if (m_GraphEditorView != null)
{
m_GraphEditorView.saveRequested += UpdateAsset;
m_GraphEditorView.convertToSubgraphRequested += ToSubGraph;
m_GraphEditorView.showInProjectRequested += PingAsset;
m_GraphEditorView.isCheckedOut += IsGraphAssetCheckedOut;
m_GraphEditorView.checkOut += CheckoutAsset;
m_GraphEditorView.RegisterCallback<GeometryChangedEvent>(OnGeometryChanged);
m_FrameAllAfterLayout = true;
this.rootVisualElement.Add(graphEditorView);
}
}
}
GraphObject graphObject
{
get { return m_GraphObject; }
set
{
if (m_GraphObject != null)
DestroyImmediate(m_GraphObject);
m_GraphObject = value;
}
}
public string selectedGuid
{
get { return m_Selected; }
private set { m_Selected = value; }
}
public string assetName
{
get { return titleContent.text; }
set
{
titleContent.text = value;
graphEditorView.assetName = value;
}
}
void Update()
{
if (m_HasError)
return;
if (PlayerSettings.colorSpace != m_ColorSpace)
{
graphEditorView = null;
m_ColorSpace = PlayerSettings.colorSpace;
}
if (GraphicsSettings.renderPipelineAsset != m_RenderPipelineAsset)
{
graphEditorView = null;
m_RenderPipelineAsset = GraphicsSettings.renderPipelineAsset;
}
if (EditorGUIUtility.isProSkin != m_ProTheme)
{
if (graphObject != null && graphObject.graph != null)
{
Texture2D icon = GetThemeIcon(graphObject.graph);
// This is adding the icon at the front of the tab
titleContent = EditorGUIUtility.TrTextContentWithIcon(assetName, icon);
m_ProTheme = EditorGUIUtility.isProSkin;
}
}
try
{
if (graphObject == null && selectedGuid != null)
{
var guid = selectedGuid;
selectedGuid = null;
Initialize(guid);
}
if (graphObject == null)
{
Close();
return;
}
var materialGraph = graphObject.graph as GraphData;
if (materialGraph == null)
return;
if (graphEditorView == null)
{
messageManager.ClearAll();
materialGraph.messageManager = messageManager;
var asset = AssetDatabase.LoadAssetAtPath<Object>(AssetDatabase.GUIDToAssetPath(selectedGuid));
graphEditorView = new GraphEditorView(this, materialGraph, messageManager)
{
viewDataKey = selectedGuid,
assetName = asset.name.Split('/').Last()
};
m_ColorSpace = PlayerSettings.colorSpace;
m_RenderPipelineAsset = GraphicsSettings.renderPipelineAsset;
graphObject.Validate();
}
if (m_ChangedFileDependencies.Count > 0 && graphObject != null && graphObject.graph != null)
{
var subGraphNodes = graphObject.graph.GetNodes<SubGraphNode>();
foreach (var subGraphNode in subGraphNodes)
{
subGraphNode.Reload(m_ChangedFileDependencies);
}
if(subGraphNodes.Count() > 0)
{
// Keywords always need to be updated to test against variant limit
// No Keywords may indicate removal and this may have now made the Graph valid again
// Need to validate Graph to clear errors in this case
materialGraph.OnKeywordChanged();
}
foreach (var customFunctionNode in graphObject.graph.GetNodes<CustomFunctionNode>())
{
customFunctionNode.Reload(m_ChangedFileDependencies);
}
m_ChangedFileDependencies.Clear();
}
if (graphObject.wasUndoRedoPerformed)
{
graphEditorView.HandleGraphChanges();
graphObject.graph.ClearChanges();
graphObject.HandleUndoRedo();
}
graphEditorView.HandleGraphChanges();
graphObject.graph.ClearChanges();
}
catch (Exception e)
{
m_HasError = true;
m_GraphEditorView = null;
graphObject = null;
Debug.LogException(e);
throw;
}
}
public void ReloadSubGraphsOnNextUpdate(List<string> changedFiles)
{
foreach (var changedFile in changedFiles)
{
m_ChangedFileDependencies.Add(changedFile);
}
}
void OnEnable()
{
this.SetAntiAliasing(4);
}
void OnDisable()
{
graphEditorView = null;
messageManager.ClearAll();
}
void OnDestroy()
{
if (graphObject != null)
{
string nameOfFile = AssetDatabase.GUIDToAssetPath(selectedGuid);
if (graphObject.isDirty && EditorUtility.DisplayDialog("Shader Graph Has Been Modified", "Do you want to save the changes you made in the Shader Graph?\n" + nameOfFile + "\n\nYour changes will be lost if you don't save them.", "Save", "Don't Save"))
UpdateAsset();
Undo.ClearUndo(graphObject);
DestroyImmediate(graphObject);
}
graphEditorView = null;
}
public void PingAsset()
{
if (selectedGuid != null)
{
var path = AssetDatabase.GUIDToAssetPath(selectedGuid);
var asset = AssetDatabase.LoadAssetAtPath<Object>(path);
EditorGUIUtility.PingObject(asset);
}
}
public bool IsGraphAssetCheckedOut()
{
if (selectedGuid != null)
{
var path = AssetDatabase.GUIDToAssetPath(selectedGuid);
var asset = AssetDatabase.LoadAssetAtPath<Object>(path);
if (!AssetDatabase.IsOpenForEdit(asset, StatusQueryOptions.UseCachedIfPossible))
return false;
return true;
}
return false;
}
public void CheckoutAsset()
{
if (selectedGuid != null)
{
var path = AssetDatabase.GUIDToAssetPath(selectedGuid);
var asset = AssetDatabase.LoadAssetAtPath<Object>(path);
Task task = Provider.Checkout(asset, CheckoutMode.Both);
task.Wait();
}
}
public void UpdateAsset()
{
if (selectedGuid != null && graphObject != null)
{
var path = AssetDatabase.GUIDToAssetPath(selectedGuid);
if (string.IsNullOrEmpty(path) || graphObject == null)
return;
UpdateShaderGraphOnDisk(path);
if (GraphData.onSaveGraph != null)
{
var shader = AssetDatabase.LoadAssetAtPath<Shader>(path);
GraphData.onSaveGraph(shader);
}
graphObject.isDirty = false;
}
}
public void ToSubGraph()
{
var graphView = graphEditorView.graphView;
var path = EditorUtility.SaveFilePanelInProject("Save Sub Graph", "New Shader Sub Graph", ShaderSubGraphImporter.Extension, "");
path = path.Replace(Application.dataPath, "Assets");
if (path.Length == 0)
return;
graphObject.RegisterCompleteObjectUndo("Convert To Subgraph");
var nodes = graphView.selection.OfType<IShaderNodeView>().Where(x => !(x.node is PropertyNode || x.node is SubGraphOutputNode)).Select(x => x.node).Where(x => x.allowedInSubGraph).ToArray();
var bounds = Rect.MinMaxRect(float.PositiveInfinity, float.PositiveInfinity, float.NegativeInfinity, float.NegativeInfinity);
foreach (var node in nodes)
{
var center = node.drawState.position.center;
bounds = Rect.MinMaxRect(
Mathf.Min(bounds.xMin, center.x),
Mathf.Min(bounds.yMin, center.y),
Mathf.Max(bounds.xMax, center.x),
Mathf.Max(bounds.yMax, center.y));
}
var middle = bounds.center;
bounds.center = Vector2.zero;
// Collect graph inputs
var graphInputs = graphView.selection.OfType<BlackboardField>().Select(x => x.userData as ShaderInput);
// Collect the property nodes and get the corresponding properties
var propertyNodeGuids = graphView.selection.OfType<IShaderNodeView>().Where(x => (x.node is PropertyNode)).Select(x => ((PropertyNode)x.node).propertyGuid);
var metaProperties = graphView.graph.properties.Where(x => propertyNodeGuids.Contains(x.guid));
// Collect the keyword nodes and get the corresponding keywords
var keywordNodeGuids = graphView.selection.OfType<IShaderNodeView>().Where(x => (x.node is KeywordNode)).Select(x => ((KeywordNode)x.node).keywordGuid);
var metaKeywords = graphView.graph.keywords.Where(x => keywordNodeGuids.Contains(x.guid));
var copyPasteGraph = new CopyPasteGraph(
graphView.graph.assetGuid,
graphView.selection.OfType<ShaderGroup>().Select(x => x.userData),
graphView.selection.OfType<IShaderNodeView>().Where(x => !(x.node is PropertyNode || x.node is SubGraphOutputNode)).Select(x => x.node).Where(x => x.allowedInSubGraph).ToArray(),
graphView.selection.OfType<Edge>().Select(x => x.userData as IEdge),
graphInputs,
metaProperties,
metaKeywords,
graphView.selection.OfType<StickyNote>().Select(x => x.userData));
var deserialized = CopyPasteGraph.FromJson(JsonUtility.ToJson(copyPasteGraph, false));
if (deserialized == null)
return;
var subGraph = new GraphData { isSubGraph = true };
subGraph.path = "Sub Graphs";
var subGraphOutputNode = new SubGraphOutputNode();
{
var drawState = subGraphOutputNode.drawState;
drawState.position = new Rect(new Vector2(bounds.xMax + 200f, 0f), drawState.position.size);
subGraphOutputNode.drawState = drawState;
}
subGraph.AddNode(subGraphOutputNode);
// Always copy deserialized keyword inputs
foreach (ShaderKeyword keyword in deserialized.metaKeywords)
{
ShaderInput copiedInput = keyword.Copy();
subGraph.SanitizeGraphInputName(copiedInput);
subGraph.SanitizeGraphInputReferenceName(copiedInput, keyword.overrideReferenceName);
subGraph.AddGraphInput(copiedInput);
// Update the keyword nodes that depends on the copied keyword
var dependentKeywordNodes = deserialized.GetNodes<KeywordNode>().Where(x => x.keywordGuid == keyword.guid);
foreach (var node in dependentKeywordNodes)
{
node.owner = graphView.graph;
node.keywordGuid = copiedInput.guid;
}
}
var groupGuidMap = new Dictionary<Guid, Guid>();
foreach (GroupData groupData in deserialized.groups)
{
var oldGuid = groupData.guid;
var newGuid = groupData.RewriteGuid();
groupGuidMap[oldGuid] = newGuid;
subGraph.CreateGroup(groupData);
}
List<Guid> groupGuids = new List<Guid>();
var nodeGuidMap = new Dictionary<Guid, Guid>();
foreach (var node in deserialized.GetNodes<AbstractMaterialNode>())
{
var oldGuid = node.guid;
var newGuid = node.RewriteGuid();
nodeGuidMap[oldGuid] = newGuid;
var drawState = node.drawState;
drawState.position = new Rect(drawState.position.position - middle, drawState.position.size);
node.drawState = drawState;
if (!groupGuids.Contains(node.groupGuid))
{
groupGuids.Add(node.groupGuid);
}
// Checking if the group guid is also being copied.
// If not then nullify that guid
if (node.groupGuid != Guid.Empty)
{
node.groupGuid = !groupGuidMap.ContainsKey(node.groupGuid) ? Guid.Empty : groupGuidMap[node.groupGuid];
}
subGraph.AddNode(node);
}
foreach (var note in deserialized.stickyNotes)
{
if (!groupGuids.Contains(note.groupGuid))
{
groupGuids.Add(note.groupGuid);
}
if (note.groupGuid != Guid.Empty)
{
note.groupGuid = !groupGuidMap.ContainsKey(note.groupGuid) ? Guid.Empty : groupGuidMap[note.groupGuid];
}
note.RewriteGuid();
subGraph.AddStickyNote(note);
}
// figure out what needs remapping
var externalOutputSlots = new List<IEdge>();
var externalInputSlots = new List<IEdge>();
foreach (var edge in deserialized.edges)
{
var outputSlot = edge.outputSlot;
var inputSlot = edge.inputSlot;
Guid remappedOutputNodeGuid;
Guid remappedInputNodeGuid;
var outputSlotExistsInSubgraph = nodeGuidMap.TryGetValue(outputSlot.nodeGuid, out remappedOutputNodeGuid);
var inputSlotExistsInSubgraph = nodeGuidMap.TryGetValue(inputSlot.nodeGuid, out remappedInputNodeGuid);
// pasting nice internal links!
if (outputSlotExistsInSubgraph && inputSlotExistsInSubgraph)
{
var outputSlotRef = new SlotReference(remappedOutputNodeGuid, outputSlot.slotId);
var inputSlotRef = new SlotReference(remappedInputNodeGuid, inputSlot.slotId);
subGraph.Connect(outputSlotRef, inputSlotRef);
}
// one edge needs to go to outside world
else if (outputSlotExistsInSubgraph)
{
externalInputSlots.Add(edge);
}
else if (inputSlotExistsInSubgraph)
{
externalOutputSlots.Add(edge);
}
}
// Find the unique edges coming INTO the graph
var uniqueIncomingEdges = externalOutputSlots.GroupBy(
edge => edge.outputSlot,
edge => edge,
(key, edges) => new { slotRef = key, edges = edges.ToList() });
var externalInputNeedingConnection = new List<KeyValuePair<IEdge, AbstractShaderProperty>>();
var amountOfProps = uniqueIncomingEdges.Count();
const int height = 40;
const int subtractHeight = 20;
var propPos = new Vector2(0, -((amountOfProps / 2) + height) - subtractHeight);
foreach (var group in uniqueIncomingEdges)
{
var sr = group.slotRef;
var fromNode = graphObject.graph.GetNodeFromGuid(sr.nodeGuid);
var fromSlot = fromNode.FindOutputSlot<MaterialSlot>(sr.slotId);
AbstractShaderProperty prop;
switch (fromSlot.concreteValueType)
{
case ConcreteSlotValueType.Texture2D:
prop = new Texture2DShaderProperty();
break;
case ConcreteSlotValueType.Texture2DArray:
prop = new Texture2DArrayShaderProperty();
break;
case ConcreteSlotValueType.Texture3D:
prop = new Texture3DShaderProperty();
break;
case ConcreteSlotValueType.Cubemap:
prop = new CubemapShaderProperty();
break;
case ConcreteSlotValueType.Vector4:
prop = new Vector4ShaderProperty();
break;
case ConcreteSlotValueType.Vector3:
prop = new Vector3ShaderProperty();
break;
case ConcreteSlotValueType.Vector2:
prop = new Vector2ShaderProperty();
break;
case ConcreteSlotValueType.Vector1:
prop = new Vector1ShaderProperty();
break;
case ConcreteSlotValueType.Boolean:
prop = new BooleanShaderProperty();
break;
case ConcreteSlotValueType.Matrix2:
prop = new Matrix2ShaderProperty();
break;
case ConcreteSlotValueType.Matrix3:
prop = new Matrix3ShaderProperty();
break;
case ConcreteSlotValueType.Matrix4:
prop = new Matrix4ShaderProperty();
break;
case ConcreteSlotValueType.SamplerState:
prop = new SamplerStateShaderProperty();
break;
case ConcreteSlotValueType.Gradient:
prop = new GradientShaderProperty();
break;
default:
throw new ArgumentOutOfRangeException();
}
if (prop != null)
{
var materialGraph = (GraphData)graphObject.graph;
var fromPropertyNode = fromNode as PropertyNode;
var fromProperty = fromPropertyNode != null ? materialGraph.properties.FirstOrDefault(p => p.guid == fromPropertyNode.propertyGuid) : null;
prop.displayName = fromProperty != null ? fromProperty.displayName : fromSlot.concreteValueType.ToString();
subGraph.AddGraphInput(prop);
var propNode = new PropertyNode();
{
var drawState = propNode.drawState;
drawState.position = new Rect(new Vector2(bounds.xMin - 300f, 0f) + propPos, drawState.position.size);
propPos += new Vector2(0, height);
propNode.drawState = drawState;
}
subGraph.AddNode(propNode);
propNode.propertyGuid = prop.guid;
foreach (var edge in group.edges)
{
subGraph.Connect(
new SlotReference(propNode.guid, PropertyNode.OutputSlotId),
new SlotReference(nodeGuidMap[edge.inputSlot.nodeGuid], edge.inputSlot.slotId));
externalInputNeedingConnection.Add(new KeyValuePair<IEdge, AbstractShaderProperty>(edge, prop));
}
}
}
var uniqueOutgoingEdges = externalInputSlots.GroupBy(
edge => edge.outputSlot,
edge => edge,
(key, edges) => new { slot = key, edges = edges.ToList() });
var externalOutputsNeedingConnection = new List<KeyValuePair<IEdge, IEdge>>();
foreach (var group in uniqueOutgoingEdges)
{
var outputNode = subGraph.outputNode as SubGraphOutputNode;
AbstractMaterialNode node = graphView.graph.GetNodeFromGuid(group.edges[0].outputSlot.nodeGuid);
MaterialSlot slot = node.FindSlot<MaterialSlot>(group.edges[0].outputSlot.slotId);
var slotId = outputNode.AddSlot(slot.concreteValueType);
var inputSlotRef = new SlotReference(outputNode.guid, slotId);
foreach (var edge in group.edges)
{
var newEdge = subGraph.Connect(new SlotReference(nodeGuidMap[edge.outputSlot.nodeGuid], edge.outputSlot.slotId), inputSlotRef);
externalOutputsNeedingConnection.Add(new KeyValuePair<IEdge, IEdge>(edge, newEdge));
}
}
if(FileUtilities.WriteShaderGraphToDisk(path, subGraph))
AssetDatabase.ImportAsset(path);
var loadedSubGraph = AssetDatabase.LoadAssetAtPath(path, typeof(SubGraphAsset)) as SubGraphAsset;
if (loadedSubGraph == null)
return;
var subGraphNode = new SubGraphNode();
var ds = subGraphNode.drawState;
ds.position = new Rect(middle - new Vector2(100f, 150f), Vector2.zero);
subGraphNode.drawState = ds;
// Add the subgraph into the group if the nodes was all in the same group group
if (groupGuids.Count == 1)
{
subGraphNode.groupGuid = groupGuids[0];
}
graphObject.graph.AddNode(subGraphNode);
subGraphNode.asset = loadedSubGraph;
foreach (var edgeMap in externalInputNeedingConnection)
{
graphObject.graph.Connect(edgeMap.Key.outputSlot, new SlotReference(subGraphNode.guid, edgeMap.Value.guid.GetHashCode()));
}
foreach (var edgeMap in externalOutputsNeedingConnection)
{
graphObject.graph.Connect(new SlotReference(subGraphNode.guid, edgeMap.Value.inputSlot.slotId), edgeMap.Key.inputSlot);
}
graphObject.graph.RemoveElements(
graphView.selection.OfType<IShaderNodeView>().Select(x => x.node).Where(x => x.allowedInSubGraph).ToArray(),
new IEdge[] {},
new GroupData[] {},
graphView.selection.OfType<StickyNote>().Select(x => x.userData).ToArray());
graphObject.graph.ValidateGraph();
}
void UpdateShaderGraphOnDisk(string path)
{
if(FileUtilities.WriteShaderGraphToDisk(path, graphObject.graph))
AssetDatabase.ImportAsset(path);
}
public void Initialize(string assetGuid)
{
try
{
m_ColorSpace = PlayerSettings.colorSpace;
m_RenderPipelineAsset = GraphicsSettings.renderPipelineAsset;
var asset = AssetDatabase.LoadAssetAtPath<Object>(AssetDatabase.GUIDToAssetPath(assetGuid));
if (asset == null)
return;
if (!EditorUtility.IsPersistent(asset))
return;
if (selectedGuid == assetGuid)
return;
var path = AssetDatabase.GetAssetPath(asset);
var extension = Path.GetExtension(path);
if (extension == null)
return;
// Path.GetExtension returns the extension prefixed with ".", so we remove it. We force lower case such that
// the comparison will be case-insensitive.
extension = extension.Substring(1).ToLowerInvariant();
bool isSubGraph;
switch (extension)
{
case ShaderGraphImporter.Extension:
isSubGraph = false;
break;
case ShaderSubGraphImporter.Extension:
isSubGraph = true;
break;
default:
return;
}
selectedGuid = assetGuid;
var textGraph = File.ReadAllText(path, Encoding.UTF8);
graphObject = CreateInstance<GraphObject>();
graphObject.hideFlags = HideFlags.HideAndDontSave;
graphObject.graph = JsonUtility.FromJson<GraphData>(textGraph);
graphObject.graph.assetGuid = assetGuid;
graphObject.graph.isSubGraph = isSubGraph;
graphObject.graph.messageManager = messageManager;
graphObject.graph.OnEnable();
graphObject.graph.ValidateGraph();
graphEditorView = new GraphEditorView(this, m_GraphObject.graph, messageManager)
{
viewDataKey = selectedGuid,
assetName = asset.name.Split('/').Last()
};
Texture2D icon = GetThemeIcon(graphObject.graph);
// This is adding the icon at the front of the tab
titleContent = EditorGUIUtility.TrTextContentWithIcon(asset.name.Split('/').Last(), icon);
Repaint();
}
catch (Exception)
{
m_HasError = true;
m_GraphEditorView = null;
graphObject = null;
throw;
}
}
Texture2D GetThemeIcon(GraphData graphdata)
{
string theme = EditorGUIUtility.isProSkin ? "_dark" : "_light";
Texture2D icon = Resources.Load<Texture2D>("Icons/sg_graph_icon_gray"+theme+"@16");
if (graphdata.isSubGraph)
{
icon = Resources.Load<Texture2D>("Icons/sg_subgraph_icon_gray"+theme+"@16");
}
return icon;
}
void OnGeometryChanged(GeometryChangedEvent evt)
{
graphEditorView.UnregisterCallback<GeometryChangedEvent>(OnGeometryChanged);
if (m_FrameAllAfterLayout)
graphEditorView.graphView.FrameAll();
m_FrameAllAfterLayout = false;
foreach (var node in m_GraphObject.graph.GetNodes<AbstractMaterialNode>())
node.Dirty(ModificationScope.Node);
}
}
}