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600 行
26 KiB
600 行
26 KiB
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Threading;
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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 UnityEditor.ShaderGraph;
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using UnityEngine.Rendering;
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using Debug = UnityEngine.Debug;
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using Object = UnityEngine.Object;
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namespace UnityEditor.ShaderGraph.Drawing
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{
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public class PreviewManager : IDisposable
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{
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AbstractMaterialGraph m_Graph;
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Dictionary<Guid, PreviewRenderData> m_RenderDatas = new Dictionary<Guid, PreviewRenderData>();
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Dictionary<Guid, PreviewShaderData> m_ShaderDatas = new Dictionary<Guid, PreviewShaderData>();
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PreviewRenderData m_MasterRenderData;
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HashSet<Guid> m_DirtyPreviews = new HashSet<Guid>();
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HashSet<Guid> m_DirtyShaders = new HashSet<Guid>();
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HashSet<Guid> m_TimeDependentPreviews = new HashSet<Guid>();
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Material m_PreviewMaterial;
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MaterialPropertyBlock m_PreviewPropertyBlock;
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PreviewSceneResources m_SceneResources;
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Texture2D m_ErrorTexture;
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const bool k_UberShaderEnabled = true;
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Shader m_UberShader;
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string m_UberShaderString;
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Dictionary<Guid, int> m_UberShaderIds;
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FloatShaderProperty m_OutputIdProperty;
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public PreviewRenderData masterRenderData
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{
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get { return m_MasterRenderData; }
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}
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public PreviewManager(AbstractMaterialGraph graph)
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{
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m_Graph = graph;
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m_PreviewMaterial = new Material(Shader.Find("Unlit/Color")) { hideFlags = HideFlags.HideInHierarchy };
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m_PreviewMaterial.hideFlags = HideFlags.HideAndDontSave;
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m_PreviewPropertyBlock = new MaterialPropertyBlock();
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m_ErrorTexture = new Texture2D(2, 2);
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m_ErrorTexture.SetPixel(0, 0, Color.magenta);
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m_ErrorTexture.SetPixel(0, 1, Color.black);
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m_ErrorTexture.SetPixel(1, 0, Color.black);
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m_ErrorTexture.SetPixel(1, 1, Color.magenta);
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m_ErrorTexture.filterMode = FilterMode.Point;
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m_ErrorTexture.Apply();
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m_SceneResources = new PreviewSceneResources();
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m_UberShader = ShaderUtil.CreateShaderAsset(k_EmptyShader);
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m_UberShader.hideFlags = HideFlags.HideAndDontSave;
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m_UberShaderIds = new Dictionary<Guid, int>();
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m_MasterRenderData = new PreviewRenderData
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{
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renderTexture = new RenderTexture(400, 400, 16, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Default) { hideFlags = HideFlags.HideAndDontSave }
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};
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foreach (var node in m_Graph.GetNodes<INode>())
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AddPreview(node);
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}
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public PreviewRenderData GetPreview(INode node)
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{
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return m_RenderDatas[node.guid];
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}
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void AddPreview(INode node)
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{
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PreviewShaderData shaderData;
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if (!m_ShaderDatas.TryGetValue(node.guid, out shaderData))
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{
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shaderData = new PreviewShaderData
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{
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node = node
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};
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m_ShaderDatas[node.guid] = shaderData;
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}
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var previewData = new PreviewRenderData
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{
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shaderData = shaderData,
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renderTexture = new RenderTexture(200, 200, 16, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Default) { hideFlags = HideFlags.HideAndDontSave }
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};
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if (m_RenderDatas.ContainsKey(node.guid))
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{
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Debug.LogWarningFormat("A preview already exists for {0} {1}", node.name, node.guid);
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RemovePreview(node);
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}
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m_RenderDatas.Add(node.guid, previewData);
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m_DirtyShaders.Add(node.guid);
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node.onModified += OnNodeModified;
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if (node.RequiresTime())
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m_TimeDependentPreviews.Add(node.guid);
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var masterNode = node as IMasterNode;
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if (masterRenderData.shaderData == null && masterNode != null)
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{
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masterRenderData.shaderData = shaderData;
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}
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}
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void RemovePreview(INode node)
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{
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node.onModified -= OnNodeModified;
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m_RenderDatas.Remove(node.guid);
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m_TimeDependentPreviews.Remove(node.guid);
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m_DirtyPreviews.Remove(node.guid);
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m_DirtyShaders.Remove(node.guid);
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if (masterRenderData.shaderData != null && masterRenderData.shaderData.node == node)
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masterRenderData.shaderData = m_ShaderDatas.Values.FirstOrDefault(x => x.node is IMasterNode);
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}
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void OnNodeModified(INode node, ModificationScope scope)
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{
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if (scope >= ModificationScope.Graph)
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m_DirtyShaders.Add(node.guid);
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else if (scope == ModificationScope.Node)
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m_DirtyPreviews.Add(node.guid);
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if (node.RequiresTime())
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m_TimeDependentPreviews.Add(node.guid);
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else
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m_TimeDependentPreviews.Remove(node.guid);
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}
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Stack<Guid> m_Wavefront = new Stack<Guid>();
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List<IEdge> m_Edges = new List<IEdge>();
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List<MaterialSlot> m_Slots = new List<MaterialSlot>();
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void PropagateNodeSet(HashSet<Guid> nodeGuidSet, bool forward = true, IEnumerable<Guid> initialWavefront = null)
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{
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m_Wavefront.Clear();
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foreach (var guid in initialWavefront ?? nodeGuidSet)
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m_Wavefront.Push(guid);
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while (m_Wavefront.Count > 0)
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{
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var nodeGuid = m_Wavefront.Pop();
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var node = m_Graph.GetNodeFromGuid(nodeGuid);
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if (node == null)
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continue;
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// Loop through all nodes that the node feeds into.
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m_Slots.Clear();
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if (forward)
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node.GetOutputSlots(m_Slots);
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else
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node.GetInputSlots(m_Slots);
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foreach (var slot in m_Slots)
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{
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m_Edges.Clear();
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m_Graph.GetEdges(slot.slotReference, m_Edges);
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foreach (var edge in m_Edges)
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{
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// We look at each node we feed into.
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var connectedSlot = forward ? edge.inputSlot : edge.outputSlot;
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var connectedNodeGuid = connectedSlot.nodeGuid;
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// If the input node is already in the set of time-dependent nodes, we don't need to process it.
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if (nodeGuidSet.Contains(connectedNodeGuid))
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continue;
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// Add the node to the set of time-dependent nodes, and to the wavefront such that we can process the nodes that it feeds into.
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nodeGuidSet.Add(connectedNodeGuid);
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m_Wavefront.Push(connectedNodeGuid);
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}
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}
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}
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}
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HashSet<Guid> m_PropertyNodeGuids = new HashSet<Guid>();
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List<PreviewProperty> m_PreviewProperties = new List<PreviewProperty>();
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public void HandleGraphChanges()
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{
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foreach (var node in m_Graph.removedNodes)
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RemovePreview(node);
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foreach (var node in m_Graph.addedNodes)
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AddPreview(node);
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foreach (var edge in m_Graph.removedEdges)
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m_DirtyShaders.Add(edge.inputSlot.nodeGuid);
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foreach (var edge in m_Graph.addedEdges)
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m_DirtyShaders.Add(edge.inputSlot.nodeGuid);
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}
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List<PreviewRenderData> m_RenderList2D = new List<PreviewRenderData>();
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List<PreviewRenderData> m_RenderList3D = new List<PreviewRenderData>();
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HashSet<Guid> m_NodesWith3DPreview = new HashSet<Guid>();
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public void RenderPreviews()
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{
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if (m_DirtyShaders.Any())
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{
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m_NodesWith3DPreview.Clear();
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foreach (var node in m_Graph.GetNodes<AbstractMaterialNode>())
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{
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if (node.previewMode == PreviewMode.Preview3D)
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m_NodesWith3DPreview.Add(node.guid);
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}
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PropagateNodeSet(m_NodesWith3DPreview);
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PropagateNodeSet(m_DirtyShaders);
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var masterNodes = new List<INode>();
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var uberNodes = new List<INode>();
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foreach (var guid in m_DirtyShaders)
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{
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var node = m_Graph.GetNodeFromGuid(guid);
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if (node == null)
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continue;
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if (!k_UberShaderEnabled || node is IMasterNode)
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masterNodes.Add(node);
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else
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uberNodes.Add(node);
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}
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var count = Math.Min(uberNodes.Count, 1) + masterNodes.Count;
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try
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{
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var sw = new Stopwatch();
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sw.Start();
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var i = 0;
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EditorUtility.DisplayProgressBar("Shader Graph", string.Format("Compiling preview shaders ({0}/{1})", i, count), 0f);
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foreach (var node in masterNodes)
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{
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UpdateShader(node.guid);
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i++;
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EditorUtility.DisplayProgressBar("Shader Graph", string.Format("Compiling preview shaders ({0}/{1})", i, count), 0f);
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}
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if (uberNodes.Count > 0)
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{
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m_UberShaderIds.Clear();
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m_UberShaderString = m_Graph.GetUberPreviewShader(m_UberShaderIds, out m_OutputIdProperty);
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ShaderUtil.UpdateShaderAsset(m_UberShader, m_UberShaderString);
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File.WriteAllText(Application.dataPath + "/../UberShader.shader", (m_UberShaderString ?? "null").Replace("UnityEngine.MaterialGraph", "Generated"));
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var message = "RecreateUberShader: " + Environment.NewLine + m_UberShaderString;
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bool uberShaderHasError = false;
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if (MaterialGraphAsset.ShaderHasError(m_UberShader))
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{
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Debug.LogWarning(message);
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ShaderUtil.ClearShaderErrors(m_UberShader);
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ShaderUtil.UpdateShaderAsset(m_UberShader, k_EmptyShader);
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uberShaderHasError = true;
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}
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foreach (var node in uberNodes)
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{
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PreviewShaderData shaderData;
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if (!m_ShaderDatas.TryGetValue(node.guid, out shaderData))
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continue;
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shaderData.previewMode = m_NodesWith3DPreview.Contains(node.guid) ? PreviewMode.Preview3D : PreviewMode.Preview2D;
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shaderData.shader = m_UberShader;
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shaderData.hasError = uberShaderHasError;
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}
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i++;
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EditorUtility.DisplayProgressBar("Shader Graph", string.Format("Compiling preview shaders ({0}/{1})", i, count), 0f);
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}
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sw.Stop();
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//Debug.LogFormat("Compiled preview shaders in {0} seconds", sw.Elapsed.TotalSeconds);
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}
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finally
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{
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EditorUtility.ClearProgressBar();
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}
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m_DirtyPreviews.UnionWith(m_DirtyShaders);
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m_DirtyShaders.Clear();
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}
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m_DirtyPreviews.UnionWith(m_TimeDependentPreviews);
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PropagateNodeSet(m_DirtyPreviews);
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// Find nodes we need properties from
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m_PropertyNodeGuids.Clear();
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foreach (var nodeGuid in m_DirtyPreviews)
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m_PropertyNodeGuids.Add(nodeGuid);
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PropagateNodeSet(m_PropertyNodeGuids, false);
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// Fill MaterialPropertyBlock
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m_PreviewPropertyBlock.Clear();
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var outputIdName = m_OutputIdProperty != null ? m_OutputIdProperty.referenceName : null;
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m_PreviewPropertyBlock.SetFloat(outputIdName, -1);
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foreach (var nodeGuid in m_PropertyNodeGuids)
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{
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var node = m_Graph.GetNodeFromGuid<AbstractMaterialNode>(nodeGuid);
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if (node == null)
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continue;
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node.CollectPreviewMaterialProperties(m_PreviewProperties);
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foreach (var prop in m_Graph.properties)
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m_PreviewProperties.Add(prop.GetPreviewMaterialProperty());
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foreach (var previewProperty in m_PreviewProperties)
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{
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if (previewProperty.propType == PropertyType.Texture && previewProperty.textureValue != null)
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m_PreviewPropertyBlock.SetTexture(previewProperty.name, previewProperty.textureValue);
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else if (previewProperty.propType == PropertyType.Cubemap && previewProperty.cubemapValue != null)
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m_PreviewPropertyBlock.SetTexture(previewProperty.name, previewProperty.cubemapValue);
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else if (previewProperty.propType == PropertyType.Color)
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m_PreviewPropertyBlock.SetColor(previewProperty.name, previewProperty.colorValue);
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else if (previewProperty.propType == PropertyType.Vector2)
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m_PreviewPropertyBlock.SetVector(previewProperty.name, previewProperty.vector4Value);
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else if (previewProperty.propType == PropertyType.Vector3)
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m_PreviewPropertyBlock.SetVector(previewProperty.name, previewProperty.vector4Value);
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else if (previewProperty.propType == PropertyType.Vector4)
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m_PreviewPropertyBlock.SetVector(previewProperty.name, previewProperty.vector4Value);
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else if (previewProperty.propType == PropertyType.Float)
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m_PreviewPropertyBlock.SetFloat(previewProperty.name, previewProperty.floatValue);
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}
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m_PreviewProperties.Clear();
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}
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foreach (var nodeGuid in m_DirtyPreviews)
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{
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PreviewRenderData renderData;
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if (!m_RenderDatas.TryGetValue(nodeGuid, out renderData))
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continue;
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if (renderData.shaderData.shader == null)
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{
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renderData.texture = null;
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continue;
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}
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if (renderData.shaderData.hasError)
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{
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renderData.texture = m_ErrorTexture;
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continue;
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}
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if (renderData.shaderData.previewMode == PreviewMode.Preview2D)
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m_RenderList2D.Add(renderData);
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else
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m_RenderList3D.Add(renderData);
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}
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if (masterRenderData.shaderData != null && m_DirtyPreviews.Contains(masterRenderData.shaderData.node.guid))
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m_RenderList3D.Add(masterRenderData);
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var time = Time.realtimeSinceStartup;
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EditorUtility.SetCameraAnimateMaterialsTime(m_SceneResources.camera, time);
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m_SceneResources.light0.enabled = true;
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m_SceneResources.light0.intensity = 1.0f;
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m_SceneResources.light0.transform.rotation = Quaternion.Euler(50f, 50f, 0);
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m_SceneResources.light1.enabled = true;
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m_SceneResources.light1.intensity = 1.0f;
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m_SceneResources.camera.clearFlags = CameraClearFlags.Depth;
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// Render 2D previews
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m_SceneResources.camera.transform.position = -Vector3.forward * 2;
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m_SceneResources.camera.transform.rotation = Quaternion.identity;
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m_SceneResources.camera.orthographicSize = 1;
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m_SceneResources.camera.orthographic = true;
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m_RenderList2D.Sort((data1, data2) => data1.shaderData.shader.GetInstanceID().CompareTo(data2.shaderData.shader.GetInstanceID()));
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foreach (var renderData in m_RenderList2D)
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{
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int outputId;
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if (m_UberShaderIds.TryGetValue(renderData.shaderData.node.guid, out outputId))
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m_PreviewPropertyBlock.SetFloat(outputIdName, outputId);
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if (m_PreviewMaterial.shader != renderData.shaderData.shader)
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m_PreviewMaterial.shader = renderData.shaderData.shader;
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m_SceneResources.camera.targetTexture = renderData.renderTexture;
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var previousRenderTexure = RenderTexture.active;
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RenderTexture.active = renderData.renderTexture;
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GL.Clear(true, true, Color.black);
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Graphics.Blit(Texture2D.whiteTexture, renderData.renderTexture, m_SceneResources.checkerboardMaterial);
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Graphics.DrawMesh(m_SceneResources.quad, Matrix4x4.identity, m_PreviewMaterial, 1, m_SceneResources.camera, 0, m_PreviewPropertyBlock, ShadowCastingMode.Off, false, null, false);
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var previousUseSRP = Unsupported.useScriptableRenderPipeline;
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Unsupported.useScriptableRenderPipeline = false;
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m_SceneResources.camera.Render();
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Unsupported.useScriptableRenderPipeline = previousUseSRP;
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RenderTexture.active = previousRenderTexure;
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renderData.texture = renderData.renderTexture;
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}
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// Render 3D previews
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m_SceneResources.camera.transform.position = -Vector3.forward * 5;
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m_SceneResources.camera.transform.rotation = Quaternion.identity;
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m_SceneResources.camera.orthographic = false;
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m_RenderList3D.Sort((data1, data2) => data1.shaderData.shader.GetInstanceID().CompareTo(data2.shaderData.shader.GetInstanceID()));
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foreach (var renderData in m_RenderList3D)
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{
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int outputId;
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if (m_UberShaderIds.TryGetValue(renderData.shaderData.node.guid, out outputId))
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m_PreviewPropertyBlock.SetFloat(outputIdName, outputId);
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if (m_PreviewMaterial.shader != renderData.shaderData.shader)
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m_PreviewMaterial.shader = renderData.shaderData.shader;
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m_SceneResources.camera.targetTexture = renderData.renderTexture;
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var previousRenderTexure = RenderTexture.active;
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RenderTexture.active = renderData.renderTexture;
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GL.Clear(true, true, Color.black);
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Graphics.Blit(Texture2D.whiteTexture, renderData.renderTexture, m_SceneResources.checkerboardMaterial);
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var mesh = renderData.mesh ?? m_SceneResources.sphere;
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Graphics.DrawMesh(mesh, Matrix4x4.TRS(-mesh.bounds.center, Quaternion.identity, Vector3.one), m_PreviewMaterial, 1, m_SceneResources.camera, 0, m_PreviewPropertyBlock, ShadowCastingMode.Off, false, null, false);
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var previousUseSRP = Unsupported.useScriptableRenderPipeline;
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Unsupported.useScriptableRenderPipeline = renderData.shaderData.node is IMasterNode;
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m_SceneResources.camera.Render();
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Unsupported.useScriptableRenderPipeline = previousUseSRP;
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RenderTexture.active = previousRenderTexure;
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renderData.texture = renderData.renderTexture;
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}
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m_SceneResources.light0.enabled = false;
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m_SceneResources.light1.enabled = false;
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foreach (var renderData in m_RenderList2D)
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renderData.NotifyPreviewChanged();
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foreach (var renderData in m_RenderList3D)
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renderData.NotifyPreviewChanged();
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m_RenderList2D.Clear();
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m_RenderList3D.Clear();
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m_DirtyPreviews.Clear();
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}
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void UpdateShader(Guid nodeGuid)
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{
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var node = m_Graph.GetNodeFromGuid<AbstractMaterialNode>(nodeGuid);
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if (node == null)
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return;
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PreviewShaderData shaderData;
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if (!m_ShaderDatas.TryGetValue(nodeGuid, out shaderData))
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return;
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shaderData.previewMode = m_NodesWith3DPreview.Contains(nodeGuid) ? PreviewMode.Preview3D : PreviewMode.Preview2D;
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if (!(node is IMasterNode) && (!node.hasPreview || NodeUtils.FindEffectiveShaderStage(node, true) == ShaderStage.Vertex))
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{
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shaderData.shaderString = null;
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}
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else
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{
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PreviewMode mode;
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if (node is IMasterNode)
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{
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List<PropertyCollector.TextureInfo> configuredTextures;
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shaderData.shaderString = ((IMasterNode)node).GetShader(GenerationMode.Preview, node.name, out configuredTextures);
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}
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else
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shaderData.shaderString = m_Graph.GetPreviewShader(node, out mode);
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}
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File.WriteAllText(Application.dataPath + "/../GeneratedShader.shader", (shaderData.shaderString ?? "null").Replace("UnityEngine.MaterialGraph", "Generated"));
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if (string.IsNullOrEmpty(shaderData.shaderString))
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{
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if (shaderData.shader != null)
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{
|
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ShaderUtil.ClearShaderErrors(shaderData.shader);
|
|
Object.DestroyImmediate(shaderData.shader, true);
|
|
shaderData.shader = null;
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (shaderData.shader == null)
|
|
{
|
|
shaderData.shader = ShaderUtil.CreateShaderAsset(shaderData.shaderString);
|
|
shaderData.shader.hideFlags = HideFlags.HideAndDontSave;
|
|
}
|
|
else
|
|
{
|
|
ShaderUtil.ClearShaderErrors(shaderData.shader);
|
|
ShaderUtil.UpdateShaderAsset(shaderData.shader, shaderData.shaderString);
|
|
}
|
|
|
|
// Debug output
|
|
var message = "RecreateShader: " + node.GetVariableNameForNode() + Environment.NewLine + shaderData.shaderString;
|
|
if (MaterialGraphAsset.ShaderHasError(shaderData.shader))
|
|
{
|
|
shaderData.hasError = true;
|
|
Debug.LogWarning(message);
|
|
ShaderUtil.ClearShaderErrors(shaderData.shader);
|
|
Object.DestroyImmediate(shaderData.shader, true);
|
|
shaderData.shader = null;
|
|
}
|
|
else
|
|
{
|
|
shaderData.hasError = false;
|
|
}
|
|
}
|
|
|
|
void DestroyPreview(Guid nodeGuid, PreviewRenderData previewRenderData)
|
|
{
|
|
if (m_RenderDatas.Remove(nodeGuid))
|
|
{
|
|
if (previewRenderData.shaderData.shader != null)
|
|
Object.DestroyImmediate(previewRenderData.shaderData.shader, true);
|
|
if (previewRenderData.renderTexture != null)
|
|
Object.DestroyImmediate(previewRenderData.renderTexture, true);
|
|
var node = m_Graph.GetNodeFromGuid(nodeGuid);
|
|
if (node != null)
|
|
node.onModified -= OnNodeModified;
|
|
m_DirtyPreviews.Remove(nodeGuid);
|
|
m_DirtyShaders.Remove(nodeGuid);
|
|
m_TimeDependentPreviews.Remove(nodeGuid);
|
|
previewRenderData.shaderData.shader = null;
|
|
previewRenderData.renderTexture = null;
|
|
previewRenderData.texture = null;
|
|
previewRenderData.onPreviewChanged = null;
|
|
}
|
|
}
|
|
|
|
void ReleaseUnmanagedResources()
|
|
{
|
|
if (m_PreviewMaterial != null)
|
|
Object.DestroyImmediate(m_PreviewMaterial, true);
|
|
m_PreviewMaterial = null;
|
|
if (m_SceneResources != null)
|
|
m_SceneResources.Dispose();
|
|
m_SceneResources = null;
|
|
var previews = m_RenderDatas.ToList();
|
|
foreach (var kvp in previews)
|
|
DestroyPreview(kvp.Key, kvp.Value);
|
|
}
|
|
|
|
public void Dispose()
|
|
{
|
|
ReleaseUnmanagedResources();
|
|
GC.SuppressFinalize(this);
|
|
}
|
|
|
|
~PreviewManager()
|
|
{
|
|
ReleaseUnmanagedResources();
|
|
}
|
|
|
|
const string k_EmptyShader = @"
|
|
Shader ""hidden/preview""
|
|
{
|
|
SubShader
|
|
{
|
|
Tags { ""RenderType""=""Opaque"" }
|
|
LOD 100
|
|
|
|
Pass
|
|
{
|
|
CGPROGRAM
|
|
#pragma vertex vert
|
|
#pragma fragment frag
|
|
|
|
#include ""UnityCG.cginc""
|
|
|
|
struct appdata
|
|
{
|
|
float4 vertex : POSITION;
|
|
};
|
|
|
|
struct v2f
|
|
{
|
|
float4 vertex : SV_POSITION;
|
|
};
|
|
|
|
v2f vert (appdata v)
|
|
{
|
|
v2f o;
|
|
o.vertex = UnityObjectToClipPos(v.vertex);
|
|
return o;
|
|
}
|
|
|
|
fixed4 frag (v2f i) : SV_Target
|
|
{
|
|
return 0;
|
|
}
|
|
ENDCG
|
|
}
|
|
}
|
|
}";
|
|
}
|
|
|
|
public delegate void OnPreviewChanged();
|
|
|
|
public class PreviewShaderData
|
|
{
|
|
public INode node { get; set; }
|
|
public Shader shader { get; set; }
|
|
public string shaderString { get; set; }
|
|
public PreviewMode previewMode { get; set; }
|
|
public bool hasError { get; set; }
|
|
}
|
|
|
|
public class PreviewRenderData
|
|
{
|
|
public PreviewShaderData shaderData { get; set; }
|
|
public Mesh mesh { get; set; }
|
|
public RenderTexture renderTexture { get; set; }
|
|
public Texture texture { get; set; }
|
|
public OnPreviewChanged onPreviewChanged;
|
|
|
|
public void NotifyPreviewChanged()
|
|
{
|
|
if (onPreviewChanged != null)
|
|
onPreviewChanged();
|
|
}
|
|
}
|
|
}
|