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418 行
19 KiB
418 行
19 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.RegularExpressions;
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using UnityEngine.Graphing;
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namespace UnityEngine.MaterialGraph
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{
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[Serializable]
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public abstract class AbstractLightweightPBRMasterNode : AbstractMasterNode
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{
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public const string AlbedoSlotName = "Albedo";
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public const string NormalSlotName = "Normal";
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public const string EmissionSlotName = "Emission";
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public const string SmoothnessSlotName = "Smoothness";
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public const string OcclusionSlotName = "Occlusion";
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public const string AlphaSlotName = "Alpha";
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public const string VertexOffsetName = "VertexPosition";
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public const int AlbedoSlotId = 0;
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public const int NormalSlotId = 1;
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public const int EmissionSlotId = 3;
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public const int SmoothnessSlotId = 4;
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public const int OcclusionSlotId = 5;
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public const int AlphaSlotId = 6;
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public const int VertexOffsetId = 7;
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[SerializeField]
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private SurfaceMaterialOptions m_MaterialOptions = new SurfaceMaterialOptions();
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public SurfaceMaterialOptions options
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{
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get { return m_MaterialOptions; }
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}
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public abstract string GetWorkflowName();
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void GenerateNodeFunctionsAndPropertyUsages(
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ShaderGenerator shaderBody,
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ShaderGenerator propertyUsages,
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ShaderGenerator nodeFunction,
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GenerationMode mode,
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int[] validNodeIds)
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{
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var activeNodeList = new List<INode>();
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NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, this, NodeUtils.IncludeSelf.Include,
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new List<int>(validNodeIds));
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foreach (var node in activeNodeList.OfType<AbstractMaterialNode>())
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{
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if (node is IGeneratesFunction)
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(node as IGeneratesFunction).GenerateNodeFunction(nodeFunction, mode);
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node.GeneratePropertyUsages(propertyUsages, mode);
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}
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var nodes = ListPool<INode>.Get();
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//Get the rest of the nodes for all the other slots
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NodeUtils.DepthFirstCollectNodesFromNode(nodes, this, NodeUtils.IncludeSelf.Exclude, new List<int>(vertexInputs));
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for (var i = 0; i < nodes.Count; i++)
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{
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var node = nodes[i];
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if (node is IGeneratesBodyCode)
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(node as IGeneratesBodyCode).GenerateNodeCode(shaderBody, mode);
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}
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ListPool<INode>.Release(nodes);
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}
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void GenerateVertexShaderInternal(
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ShaderGenerator propertyUsages,
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ShaderGenerator shaderBody,
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ShaderGenerator nodeFunction,
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ShaderGenerator vertexShaderBlock,
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GenerationMode mode)
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{
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GenerateNodeFunctionsAndPropertyUsages(vertexShaderBlock, propertyUsages, nodeFunction, mode, vertexInputs);
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var slot = FindInputSlot<MaterialSlot>(VertexOffsetId);
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foreach (var edge in owner.GetEdges(slot.slotReference))
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{
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var outputRef = edge.outputSlot;
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var fromNode = owner.GetNodeFromGuid<AbstractMaterialNode>(outputRef.nodeGuid);
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if (fromNode == null)
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continue;
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var remapper = fromNode as INodeGroupRemapper;
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if (remapper != null && !remapper.IsValidSlotConnection(outputRef.slotId))
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continue;
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vertexShaderBlock.AddShaderChunk("v.vertex.xyz += " + fromNode.GetVariableNameForSlot(outputRef.slotId) + ";", true);
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}
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}
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public override string GetSubShader(GenerationMode mode, PropertyGenerator shaderPropertiesVisitor)
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{
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var templateLocation = ShaderGenerator.GetTemplatePath("lightweightSubshaderPBR.template");
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if (!File.Exists(templateLocation))
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return string.Empty;
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var activeNodeList = new List<INode>();
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NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, this);
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foreach (var node in activeNodeList.OfType<AbstractMaterialNode>())
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node.GeneratePropertyBlock(shaderPropertiesVisitor, mode);
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var templateText = File.ReadAllText(templateLocation);
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var shaderBodyVisitor = new ShaderGenerator();
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var shaderFunctionVisitor = new ShaderGenerator();
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var shaderPropertyUsagesVisitor = new ShaderGenerator();
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var shaderInputVisitor = new ShaderGenerator();
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var shaderOutputVisitor = new ShaderGenerator();
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var vertexShaderBlock = new ShaderGenerator();
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var definesVisitor = new ShaderGenerator();
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GenerateSurfaceShaderInternal(
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shaderPropertyUsagesVisitor,
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shaderBodyVisitor,
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shaderFunctionVisitor,
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shaderInputVisitor,
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shaderOutputVisitor,
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vertexShaderBlock,
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definesVisitor,
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mode);
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GenerateVertexShaderInternal(
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shaderPropertyUsagesVisitor,
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shaderBodyVisitor,
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shaderFunctionVisitor,
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vertexShaderBlock,
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mode);
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var tagsVisitor = new ShaderGenerator();
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var blendingVisitor = new ShaderGenerator();
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var cullingVisitor = new ShaderGenerator();
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var zTestVisitor = new ShaderGenerator();
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var zWriteVisitor = new ShaderGenerator();
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m_MaterialOptions.GetTags(tagsVisitor);
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m_MaterialOptions.GetBlend(blendingVisitor);
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m_MaterialOptions.GetCull(cullingVisitor);
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m_MaterialOptions.GetDepthTest(zTestVisitor);
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m_MaterialOptions.GetDepthWrite(zWriteVisitor);
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GetDefines(definesVisitor);
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var resultShader = templateText.Replace("${ShaderPropertyUsages}", shaderPropertyUsagesVisitor.GetShaderString(2));
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resultShader = resultShader.Replace("${ShaderFunctions}", shaderFunctionVisitor.GetShaderString(2));
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resultShader = resultShader.Replace("${VertexInputs}", shaderInputVisitor.GetShaderString(3));
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resultShader = resultShader.Replace("${VertexOutputs}", shaderOutputVisitor.GetShaderString(3));
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resultShader = resultShader.Replace("${PixelShaderBody}", shaderBodyVisitor.GetShaderString(3));
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resultShader = resultShader.Replace("${Tags}", tagsVisitor.GetShaderString(2));
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resultShader = resultShader.Replace("${Blending}", blendingVisitor.GetShaderString(2));
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resultShader = resultShader.Replace("${Culling}", cullingVisitor.GetShaderString(2));
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resultShader = resultShader.Replace("${ZTest}", zTestVisitor.GetShaderString(2));
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resultShader = resultShader.Replace("${ZWrite}", zWriteVisitor.GetShaderString(2));
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resultShader = resultShader.Replace("${LOD}", "" + m_MaterialOptions.lod);
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resultShader = resultShader.Replace("${Defines}", definesVisitor.GetShaderString(2));
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resultShader = resultShader.Replace("${VertexShaderBody}", vertexShaderBlock.GetShaderString(3));
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return resultShader;
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}
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public void GetDefines(ShaderGenerator visitor)
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{
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if(GetWorkflowName() == "Metallic")
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visitor.AddShaderChunk("#define _METALLIC_SETUP 1", true);
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else
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visitor.AddShaderChunk("", false);
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visitor.AddShaderChunk("#define _GLOSSYREFLECTIONS_ON", true);
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visitor.AddShaderChunk("#define _SPECULARHIGHLIGHTS_ON", true);
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}
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public override string GetFullShader(GenerationMode mode, string name, out List<PropertyGenerator.TextureInfo> configuredTextures)
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{
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var templateLocation = ShaderGenerator.GetTemplatePath("shader.template");
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if (!File.Exists(templateLocation))
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{
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configuredTextures = new List<PropertyGenerator.TextureInfo>();
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return string.Empty;
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}
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var templateText = File.ReadAllText(templateLocation);
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var shaderPropertiesVisitor = new PropertyGenerator();
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var resultShader = templateText.Replace("${ShaderName}", name);
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resultShader = resultShader.Replace("${SubShader}", GetSubShader(mode, shaderPropertiesVisitor));
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resultShader = resultShader.Replace("${ShaderPropertiesHeader}", shaderPropertiesVisitor.GetShaderString(2));
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configuredTextures = shaderPropertiesVisitor.GetConfiguredTexutres();
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Debug.Log(resultShader);
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return Regex.Replace(resultShader, @"\r\n|\n\r|\n|\r", Environment.NewLine);
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}
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protected abstract int[] surfaceInputs
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{
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get;
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}
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protected abstract int[] vertexInputs
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{
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get;
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}
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private void GenerateSurfaceShaderInternal(
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ShaderGenerator propertyUsages,
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ShaderGenerator shaderBody,
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ShaderGenerator nodeFunction,
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ShaderGenerator shaderInputVisitor,
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ShaderGenerator shaderOutputVisitor,
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ShaderGenerator vertexShaderBlock,
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ShaderGenerator definesVisitor,
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GenerationMode mode)
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{
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var activeNodeList = new List<INode>();
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NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, this, NodeUtils.IncludeSelf.Include,
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new List<int>(surfaceInputs));
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foreach (var node in activeNodeList.OfType<AbstractMaterialNode>())
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{
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if (node is IGeneratesFunction)
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{
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((IGeneratesFunction)node).GenerateNodeFunction(nodeFunction, mode);
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}
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node.GeneratePropertyUsages(propertyUsages, mode);
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}
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int vertInputIndex = 2;
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int vertOutputIndex = 5;
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// always add everything because why not.
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/*shaderInputVisitor.AddShaderChunk("float4 vertex : POSITION; \\", true);
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shaderInputVisitor.AddShaderChunk("half3 normal : NORMAL; \\", true);
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shaderInputVisitor.AddShaderChunk("half4 tangent : TANGENT; \\", true);
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shaderInputVisitor.AddShaderChunk("half4 color : COLOR; \\", true);
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shaderInputVisitor.AddShaderChunk("half4 texcoord0 : TEXCOORD0; \\", true);
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shaderInputVisitor.AddShaderChunk("float2 lightmapUV : TEXCOORD1;", true);*/
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shaderInputVisitor.AddShaderChunk("half4 texcoord1 : TEXCOORD1;", true);
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// Need these for lighting
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/*shaderOutputVisitor.AddShaderChunk("float4 posWS : TEXCOORD0; \\", true);
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shaderOutputVisitor.AddShaderChunk("half4 viewDir : TEXCOORD1; \\", true);
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shaderOutputVisitor.AddShaderChunk("half4 fogCoord : TEXCOORD2; \\", true);
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shaderOutputVisitor.AddShaderChunk("half3 normal : TEXCOORD3; \\", true);
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shaderOutputVisitor.AddShaderChunk("half4 meshUV0 : TEXCOORD4; \\", true);
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shaderOutputVisitor.AddShaderChunk("float4 hpos : SV_POSITION; \\", true);*/
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bool requiresBitangent = activeNodeList.OfType<IMayRequireBitangent>().Any(x => x.RequiresBitangent());
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bool requiresTangent = activeNodeList.OfType<IMayRequireTangent>().Any(x => x.RequiresTangent());
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bool requiresViewDirTangentSpace = activeNodeList.OfType<IMayRequireViewDirectionTangentSpace>().Any(x => x.RequiresViewDirectionTangentSpace());
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bool requiresViewDir = activeNodeList.OfType<IMayRequireViewDirection>().Any(x => x.RequiresViewDirection());
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bool requiresWorldPos = activeNodeList.OfType<IMayRequireWorldPosition>().Any(x => x.RequiresWorldPosition());
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bool requiresNormal = activeNodeList.OfType<IMayRequireNormal>().Any(x => x.RequiresNormal());
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bool requiresScreenPosition = activeNodeList.OfType<IMayRequireScreenPosition>().Any(x => x.RequiresScreenPosition());
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bool requiresVertexColor = activeNodeList.OfType<IMayRequireVertexColor>().Any(x => x.RequiresVertexColor());
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foreach (var slot in GetInputSlots<MaterialSlot>())
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{
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if (surfaceInputs.Contains(slot.id))
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{
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foreach (var edge in owner.GetEdges(slot.slotReference))
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{
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var outputRef = edge.outputSlot;
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var fromNode = owner.GetNodeFromGuid<AbstractMaterialNode>(outputRef.nodeGuid);
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if (fromNode == null)
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continue;
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var remapper = fromNode as INodeGroupRemapper;
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if (remapper != null && !remapper.IsValidSlotConnection(outputRef.slotId))
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continue;
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if (slot.id == NormalSlotId)
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{
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requiresBitangent = true;
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requiresTangent = true;
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definesVisitor.AddShaderChunk("#define _NORMALMAP 1", true);
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}
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}
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}
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}
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for (int uvIndex = 0; uvIndex < ShaderGeneratorNames.UVCount; ++uvIndex)
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{
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var channel = (UVChannel)uvIndex;
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if (activeNodeList.OfType<IMayRequireMeshUV>().Any(x => x.RequiresMeshUV(channel)))
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{
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if(uvIndex != 0)
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{
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shaderInputVisitor.AddShaderChunk(string.Format("half4 texcoord{0} : TEXCOORD{1};", uvIndex, vertInputIndex), true);
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shaderOutputVisitor.AddShaderChunk(string.Format("half4 meshUV{0} : TEXCOORD{1};", uvIndex, vertOutputIndex), true);
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vertexShaderBlock.AddShaderChunk(string.Format("o.meshUV{0} = v.texcoord{1};", uvIndex, uvIndex), true);
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vertInputIndex++;
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vertOutputIndex++;
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}
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shaderBody.AddShaderChunk(string.Format("half4 {0} = i.meshUV{1};", channel.GetUVName(), uvIndex), true);
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}
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}
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if (requiresViewDir || requiresViewDirTangentSpace)
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{
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shaderBody.AddShaderChunk("float3 " + ShaderGeneratorNames.WorldSpaceViewDirection + " = i.viewDir;", true);
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}
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if (requiresWorldPos)
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{
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shaderBody.AddShaderChunk("float3 " + ShaderGeneratorNames.WorldSpacePosition + " = i.posWS;", true);
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}
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if (requiresScreenPosition)
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{
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shaderOutputVisitor.AddShaderChunk(string.Format("half4 screenPos : TEXCOORD{0};", vertOutputIndex), true);
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vertexShaderBlock.AddShaderChunk("o.screenPos = ComputeScreenPos(v.vertex);", true);
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shaderBody.AddShaderChunk("float4 " + ShaderGeneratorNames.ScreenPosition + " = i.screenPos;", true);
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vertOutputIndex++;
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}
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if (requiresBitangent || requiresTangent || requiresViewDirTangentSpace)
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{
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shaderOutputVisitor.AddShaderChunk(string.Format("half3 tangent : TEXCOORD{0}; \\", vertOutputIndex), true);
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vertexShaderBlock.AddShaderChunk("o.tangent = normalize(UnityObjectToWorldDir(v.tangent)); \\", true);
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shaderBody.AddShaderChunk("float3 " + ShaderGeneratorNames.WorldSpaceTangent + " = normalize(i.tangent.xyz);", true);
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vertOutputIndex++;
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}
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if (requiresBitangent || requiresNormal || requiresViewDirTangentSpace)
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{
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shaderBody.AddShaderChunk("float3 " + ShaderGeneratorNames.WorldSpaceNormal + " = normalize(i.normal);", true);
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}
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if (requiresBitangent || requiresViewDirTangentSpace)
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{
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shaderOutputVisitor.AddShaderChunk(string.Format("half3 binormal : TEXCOORD{0};", vertOutputIndex), true);
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vertexShaderBlock.AddShaderChunk("o.binormal = cross(o.normal, o.tangent) * v.tangent.w;", true);
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shaderBody.AddShaderChunk("float3 " + ShaderGeneratorNames.WorldSpaceBitangent + " = i.binormal;", true);
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vertOutputIndex++;
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}
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if (requiresViewDirTangentSpace)
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{
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shaderBody.AddShaderChunk(
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"float3 " + ShaderGeneratorNames.TangentSpaceViewDirection + ";", true);
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shaderBody.AddShaderChunk(
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ShaderGeneratorNames.TangentSpaceViewDirection + ".x = dot(" +
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ShaderGeneratorNames.WorldSpaceViewDirection + "," +
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ShaderGeneratorNames.WorldSpaceTangent + ");", true);
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shaderBody.AddShaderChunk(
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ShaderGeneratorNames.TangentSpaceViewDirection + ".y = dot(" +
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ShaderGeneratorNames.WorldSpaceViewDirection + "," +
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ShaderGeneratorNames.WorldSpaceBitangent + ");", true);
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shaderBody.AddShaderChunk(
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ShaderGeneratorNames.TangentSpaceViewDirection + ".z = dot(" +
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ShaderGeneratorNames.WorldSpaceViewDirection + "," +
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ShaderGeneratorNames.WorldSpaceNormal + ");", true);
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}
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if (requiresVertexColor)
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{
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shaderOutputVisitor.AddShaderChunk(string.Format("half4 color : TEXCOORD{0};", vertOutputIndex), true);
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shaderBody.AddShaderChunk("float4 " + ShaderGeneratorNames.VertexColor + " = i.color;", true);
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vertInputIndex++;
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vertOutputIndex++;
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}
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GenerateNodeCode(shaderBody, propertyUsages, mode);
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}
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public void GenerateNodeCode(ShaderGenerator shaderBody, ShaderGenerator propertyUsages, GenerationMode generationMode)
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{
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var nodes = ListPool<INode>.Get();
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//Get the rest of the nodes for all the other slots
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NodeUtils.DepthFirstCollectNodesFromNode(nodes, this, NodeUtils.IncludeSelf.Exclude, new List<int>(surfaceInputs));
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for (var i = 0; i < nodes.Count; i++)
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{
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var node = nodes[i];
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if (node is IGeneratesBodyCode)
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(node as IGeneratesBodyCode).GenerateNodeCode(shaderBody, generationMode);
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}
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ListPool<INode>.Release(nodes);
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foreach (var slot in GetInputSlots<MaterialSlot>())
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{
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if (surfaceInputs.Contains(slot.id))
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{
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foreach (var edge in owner.GetEdges(slot.slotReference))
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{
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var outputRef = edge.outputSlot;
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var fromNode = owner.GetNodeFromGuid<AbstractMaterialNode>(outputRef.nodeGuid);
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if (fromNode == null)
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continue;
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var remapper = fromNode as INodeGroupRemapper;
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if (remapper != null && !remapper.IsValidSlotConnection(outputRef.slotId))
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continue;
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shaderBody.AddShaderChunk("o." + slot.shaderOutputName + " = " + fromNode.GetVariableNameForSlot(outputRef.slotId) + ";", true);
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if (slot.id == NormalSlotId)
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shaderBody.AddShaderChunk("o." + slot.shaderOutputName + " += 1e-6;", true);
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if (slot.id == AlphaSlotId)
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propertyUsages.AddShaderChunk("#define _ALPHAPREMULTIPLY_ON", true);
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}
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}
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}
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}
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}
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}
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