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856 行
43 KiB
856 行
43 KiB
using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using UnityEditor.Graphing;
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using UnityEngine; // Vector3,4
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using UnityEditor.ShaderGraph;
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namespace UnityEditor.Experimental.Rendering.HDPipeline
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{
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public static class HDRPShaderStructs
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{
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struct AttributesMesh
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{
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[Semantic("POSITION")] Vector3 positionOS;
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[Semantic("NORMAL")][Optional] Vector3 normalOS;
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[Semantic("TANGENT")][Optional] Vector4 tangentOS; // Stores bi-tangent sign in w
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[Semantic("TEXCOORD0")][Optional] Vector2 uv0;
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[Semantic("TEXCOORD1")][Optional] Vector2 uv1;
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[Semantic("TEXCOORD2")][Optional] Vector2 uv2;
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[Semantic("TEXCOORD3")][Optional] Vector2 uv3;
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[Semantic("COLOR")][Optional] Vector4 color;
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};
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struct VaryingsMeshToPS
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{
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[Semantic("SV_Position")] Vector4 positionCS;
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[Optional] Vector3 positionRWS;
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[Optional] Vector3 normalWS;
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[Optional] Vector4 tangentWS; // w contain mirror sign
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[Optional] Vector2 texCoord0;
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[Optional] Vector2 texCoord1;
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[Optional] Vector2 texCoord2;
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[Optional] Vector2 texCoord3;
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[Optional] Vector4 color;
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[Optional][Semantic("FRONT_FACE_SEMANTIC")][OverrideType("FRONT_FACE_TYPE")][PreprocessorIf("SHADER_STAGE_FRAGMENT")]
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bool cullFace;
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public static Dependency[] tessellationDependencies = new Dependency[]
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{
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new Dependency("VaryingsMeshToPS.positionRWS", "VaryingsMeshToDS.positionRWS"),
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new Dependency("VaryingsMeshToPS.normalWS", "VaryingsMeshToDS.normalWS"),
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new Dependency("VaryingsMeshToPS.tangentWS", "VaryingsMeshToDS.tangentWS"),
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new Dependency("VaryingsMeshToPS.texCoord0", "VaryingsMeshToDS.texCoord0"),
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new Dependency("VaryingsMeshToPS.texCoord1", "VaryingsMeshToDS.texCoord1"),
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new Dependency("VaryingsMeshToPS.texCoord2", "VaryingsMeshToDS.texCoord2"),
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new Dependency("VaryingsMeshToPS.texCoord3", "VaryingsMeshToDS.texCoord3"),
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new Dependency("VaryingsMeshToPS.color", "VaryingsMeshToDS.color"),
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};
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public static Dependency[] standardDependencies = new Dependency[]
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{
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new Dependency("VaryingsMeshToPS.positionRWS", "AttributesMesh.positionOS"),
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new Dependency("VaryingsMeshToPS.normalWS", "AttributesMesh.normalOS"),
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new Dependency("VaryingsMeshToPS.tangentWS", "AttributesMesh.tangentOS"),
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new Dependency("VaryingsMeshToPS.texCoord0", "AttributesMesh.uv0"),
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new Dependency("VaryingsMeshToPS.texCoord1", "AttributesMesh.uv1"),
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new Dependency("VaryingsMeshToPS.texCoord2", "AttributesMesh.uv2"),
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new Dependency("VaryingsMeshToPS.texCoord3", "AttributesMesh.uv3"),
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new Dependency("VaryingsMeshToPS.color", "AttributesMesh.color"),
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};
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};
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struct VaryingsMeshToDS
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{
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Vector3 positionRWS;
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Vector3 normalWS;
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[Optional] Vector4 tangentWS;
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[Optional] Vector2 texCoord0;
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[Optional] Vector2 texCoord1;
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[Optional] Vector2 texCoord2;
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[Optional] Vector2 texCoord3;
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[Optional] Vector4 color;
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public static Dependency[] tessellationDependencies = new Dependency[]
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{
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new Dependency("VaryingsMeshToDS.tangentWS", "VaryingsMeshToPS.tangentWS"),
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new Dependency("VaryingsMeshToDS.texCoord0", "VaryingsMeshToPS.texCoord0"),
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new Dependency("VaryingsMeshToDS.texCoord1", "VaryingsMeshToPS.texCoord1"),
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new Dependency("VaryingsMeshToDS.texCoord2", "VaryingsMeshToPS.texCoord2"),
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new Dependency("VaryingsMeshToDS.texCoord3", "VaryingsMeshToPS.texCoord3"),
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new Dependency("VaryingsMeshToDS.color", "VaryingsMeshToPS.color"),
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};
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};
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struct FragInputs
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{
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public static Dependency[] dependencies = new Dependency[]
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{
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new Dependency("FragInputs.positionRWS", "VaryingsMeshToPS.positionRWS"),
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new Dependency("FragInputs.worldToTangent", "VaryingsMeshToPS.tangentWS"),
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new Dependency("FragInputs.worldToTangent", "VaryingsMeshToPS.normalWS"),
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new Dependency("FragInputs.texCoord0", "VaryingsMeshToPS.texCoord0"),
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new Dependency("FragInputs.texCoord1", "VaryingsMeshToPS.texCoord1"),
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new Dependency("FragInputs.texCoord2", "VaryingsMeshToPS.texCoord2"),
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new Dependency("FragInputs.texCoord3", "VaryingsMeshToPS.texCoord3"),
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new Dependency("FragInputs.color", "VaryingsMeshToPS.color"),
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new Dependency("FragInputs.isFrontFace", "VaryingsMeshToPS.cullFace"),
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};
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};
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// this describes the input to the pixel shader graph eval
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public struct SurfaceDescriptionInputs
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{
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[Optional] Vector3 ObjectSpaceNormal;
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[Optional] Vector3 ViewSpaceNormal;
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[Optional] Vector3 WorldSpaceNormal;
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[Optional] Vector3 TangentSpaceNormal;
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[Optional] Vector3 ObjectSpaceTangent;
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[Optional] Vector3 ViewSpaceTangent;
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[Optional] Vector3 WorldSpaceTangent;
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[Optional] Vector3 TangentSpaceTangent;
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[Optional] Vector3 ObjectSpaceBiTangent;
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[Optional] Vector3 ViewSpaceBiTangent;
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[Optional] Vector3 WorldSpaceBiTangent;
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[Optional] Vector3 TangentSpaceBiTangent;
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[Optional] Vector3 ObjectSpaceViewDirection;
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[Optional] Vector3 ViewSpaceViewDirection;
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[Optional] Vector3 WorldSpaceViewDirection;
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[Optional] Vector3 TangentSpaceViewDirection;
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[Optional] Vector3 ObjectSpacePosition;
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[Optional] Vector3 ViewSpacePosition;
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[Optional] Vector3 WorldSpacePosition;
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[Optional] Vector3 TangentSpacePosition;
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[Optional] Vector4 ScreenPosition;
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[Optional] Vector4 uv0;
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[Optional] Vector4 uv1;
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[Optional] Vector4 uv2;
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[Optional] Vector4 uv3;
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[Optional] Vector4 VertexColor;
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[Optional] float FaceSign;
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public static Dependency[] dependencies = new Dependency[]
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{
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new Dependency("SurfaceDescriptionInputs.WorldSpaceNormal", "FragInputs.worldToTangent"),
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new Dependency("SurfaceDescriptionInputs.ObjectSpaceNormal", "SurfaceDescriptionInputs.WorldSpaceNormal"),
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new Dependency("SurfaceDescriptionInputs.ViewSpaceNormal", "SurfaceDescriptionInputs.WorldSpaceNormal"),
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new Dependency("SurfaceDescriptionInputs.WorldSpaceTangent", "FragInputs.worldToTangent"),
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new Dependency("SurfaceDescriptionInputs.ObjectSpaceTangent", "SurfaceDescriptionInputs.WorldSpaceTangent"),
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new Dependency("SurfaceDescriptionInputs.ViewSpaceTangent", "SurfaceDescriptionInputs.WorldSpaceTangent"),
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new Dependency("SurfaceDescriptionInputs.WorldSpaceBiTangent", "FragInputs.worldToTangent"),
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new Dependency("SurfaceDescriptionInputs.ObjectSpaceBiTangent", "SurfaceDescriptionInputs.WorldSpaceBiTangent"),
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new Dependency("SurfaceDescriptionInputs.ViewSpaceBiTangent", "SurfaceDescriptionInputs.WorldSpaceBiTangent"),
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new Dependency("SurfaceDescriptionInputs.WorldSpacePosition", "FragInputs.positionRWS"),
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new Dependency("SurfaceDescriptionInputs.ObjectSpacePosition", "FragInputs.positionRWS"),
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new Dependency("SurfaceDescriptionInputs.ViewSpacePosition", "FragInputs.positionRWS"),
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new Dependency("SurfaceDescriptionInputs.WorldSpaceViewDirection", "FragInputs.positionRWS"), // we build WorldSpaceViewDirection using FragInputs.positionRWS in GetWorldSpaceNormalizeViewDir()
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new Dependency("SurfaceDescriptionInputs.ObjectSpaceViewDirection", "SurfaceDescriptionInputs.WorldSpaceViewDirection"),
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new Dependency("SurfaceDescriptionInputs.ViewSpaceViewDirection", "SurfaceDescriptionInputs.WorldSpaceViewDirection"),
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new Dependency("SurfaceDescriptionInputs.TangentSpaceViewDirection", "SurfaceDescriptionInputs.WorldSpaceViewDirection"),
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new Dependency("SurfaceDescriptionInputs.TangentSpaceViewDirection", "SurfaceDescriptionInputs.WorldSpaceTangent"),
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new Dependency("SurfaceDescriptionInputs.TangentSpaceViewDirection", "SurfaceDescriptionInputs.WorldSpaceBiTangent"),
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new Dependency("SurfaceDescriptionInputs.TangentSpaceViewDirection", "SurfaceDescriptionInputs.WorldSpaceNormal"),
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new Dependency("SurfaceDescriptionInputs.ScreenPosition", "SurfaceDescriptionInputs.WorldSpacePosition"),
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new Dependency("SurfaceDescriptionInputs.uv0", "FragInputs.texCoord0"),
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new Dependency("SurfaceDescriptionInputs.uv1", "FragInputs.texCoord1"),
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new Dependency("SurfaceDescriptionInputs.uv2", "FragInputs.texCoord2"),
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new Dependency("SurfaceDescriptionInputs.uv3", "FragInputs.texCoord3"),
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new Dependency("SurfaceDescriptionInputs.VertexColor", "FragInputs.color"),
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new Dependency("SurfaceDescriptionInputs.FaceSign", "FragInputs.isFrontFace"),
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};
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};
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// this describes the input to the pixel shader graph eval
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public struct VertexDescriptionInputs
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{
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[Optional] Vector3 ObjectSpaceNormal;
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[Optional] Vector3 ViewSpaceNormal;
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[Optional] Vector3 WorldSpaceNormal;
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[Optional] Vector3 TangentSpaceNormal;
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[Optional] Vector3 ObjectSpaceTangent;
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[Optional] Vector3 ViewSpaceTangent;
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[Optional] Vector3 WorldSpaceTangent;
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[Optional] Vector3 TangentSpaceTangent;
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[Optional] Vector3 ObjectSpaceBiTangent;
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[Optional] Vector3 ViewSpaceBiTangent;
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[Optional] Vector3 WorldSpaceBiTangent;
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[Optional] Vector3 TangentSpaceBiTangent;
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[Optional] Vector3 ObjectSpaceViewDirection;
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[Optional] Vector3 ViewSpaceViewDirection;
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[Optional] Vector3 WorldSpaceViewDirection;
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[Optional] Vector3 TangentSpaceViewDirection;
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[Optional] Vector3 ObjectSpacePosition;
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[Optional] Vector3 ViewSpacePosition;
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[Optional] Vector3 WorldSpacePosition;
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[Optional] Vector3 TangentSpacePosition;
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[Optional] Vector4 ScreenPosition;
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[Optional] Vector4 uv0;
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[Optional] Vector4 uv1;
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[Optional] Vector4 uv2;
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[Optional] Vector4 uv3;
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[Optional] Vector4 VertexColor;
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public static Dependency[] dependencies = new Dependency[]
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{ // TODO: NOCHECKIN: these dependencies are not correct for vertex pass
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new Dependency("VertexDescriptionInputs.ObjectSpaceNormal", "AttributesMesh.normalOS"),
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new Dependency("VertexDescriptionInputs.WorldSpaceNormal", "AttributesMesh.normalOS"),
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new Dependency("VertexDescriptionInputs.ViewSpaceNormal", "VertexDescriptionInputs.WorldSpaceNormal"),
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new Dependency("VertexDescriptionInputs.ObjectSpaceTangent", "AttributesMesh.tangentOS"),
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new Dependency("VertexDescriptionInputs.WorldSpaceTangent", "AttributesMesh.tangentOS"),
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new Dependency("VertexDescriptionInputs.ViewSpaceTangent", "VertexDescriptionInputs.WorldSpaceTangent"),
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new Dependency("VertexDescriptionInputs.ObjectSpaceBiTangent", "AttributesMesh.normalOS"),
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new Dependency("VertexDescriptionInputs.ObjectSpaceBiTangent", "AttributesMesh.tangentOS"),
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new Dependency("VertexDescriptionInputs.WorldSpaceBiTangent", "VertexDescriptionInputs.ObjectSpaceBiTangent"),
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new Dependency("VertexDescriptionInputs.ViewSpaceBiTangent", "VertexDescriptionInputs.WorldSpaceBiTangent"),
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new Dependency("VertexDescriptionInputs.ObjectSpacePosition", "AttributesMesh.positionOS"),
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new Dependency("VertexDescriptionInputs.WorldSpacePosition", "AttributesMesh.positionOS"),
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new Dependency("VertexDescriptionInputs.ViewSpacePosition", "VertexDescriptionInputs.WorldSpacePosition"),
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new Dependency("VertexDescriptionInputs.WorldSpaceViewDirection", "VertexDescriptionInputs.WorldSpacePosition"),
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new Dependency("VertexDescriptionInputs.ObjectSpaceViewDirection", "VertexDescriptionInputs.WorldSpaceViewDirection"),
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new Dependency("VertexDescriptionInputs.ViewSpaceViewDirection", "VertexDescriptionInputs.WorldSpaceViewDirection"),
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new Dependency("VertexDescriptionInputs.TangentSpaceViewDirection", "VertexDescriptionInputs.WorldSpaceViewDirection"),
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new Dependency("VertexDescriptionInputs.TangentSpaceViewDirection", "VertexDescriptionInputs.WorldSpaceTangent"),
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new Dependency("VertexDescriptionInputs.TangentSpaceViewDirection", "VertexDescriptionInputs.WorldSpaceBiTangent"),
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new Dependency("VertexDescriptionInputs.TangentSpaceViewDirection", "VertexDescriptionInputs.WorldSpaceNormal"),
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new Dependency("VertexDescriptionInputs.ScreenPosition", "VertexDescriptionInputs.WorldSpacePosition"),
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new Dependency("VertexDescriptionInputs.uv0", "AttributesMesh.uv0"),
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new Dependency("VertexDescriptionInputs.uv1", "AttributesMesh.uv1"),
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new Dependency("VertexDescriptionInputs.uv2", "AttributesMesh.uv2"),
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new Dependency("VertexDescriptionInputs.uv3", "AttributesMesh.uv3"),
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new Dependency("VertexDescriptionInputs.VertexColor", "AttributesMesh.color"),
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};
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};
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// TODO: move this out of HDRPShaderStructs
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static public void AddActiveFieldsFromVertexGraphRequirements(HashSet<string> activeFields, ShaderGraphRequirements requirements)
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{
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if (requirements.requiresScreenPosition)
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{
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activeFields.Add("VertexDescriptionInputs.ScreenPosition");
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}
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if (requirements.requiresVertexColor)
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{
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activeFields.Add("VertexDescriptionInputs.VertexColor");
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}
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if (requirements.requiresNormal != 0)
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{
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if ((requirements.requiresNormal & NeededCoordinateSpace.Object) > 0)
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activeFields.Add("VertexDescriptionInputs.ObjectSpaceNormal");
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if ((requirements.requiresNormal & NeededCoordinateSpace.View) > 0)
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activeFields.Add("VertexDescriptionInputs.ViewSpaceNormal");
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if ((requirements.requiresNormal & NeededCoordinateSpace.World) > 0)
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activeFields.Add("VertexDescriptionInputs.WorldSpaceNormal");
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if ((requirements.requiresNormal & NeededCoordinateSpace.Tangent) > 0)
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activeFields.Add("VertexDescriptionInputs.TangentSpaceNormal");
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}
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if (requirements.requiresTangent != 0)
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{
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if ((requirements.requiresTangent & NeededCoordinateSpace.Object) > 0)
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activeFields.Add("VertexDescriptionInputs.ObjectSpaceTangent");
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if ((requirements.requiresTangent & NeededCoordinateSpace.View) > 0)
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activeFields.Add("VertexDescriptionInputs.ViewSpaceTangent");
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if ((requirements.requiresTangent & NeededCoordinateSpace.World) > 0)
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activeFields.Add("VertexDescriptionInputs.WorldSpaceTangent");
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if ((requirements.requiresTangent & NeededCoordinateSpace.Tangent) > 0)
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activeFields.Add("VertexDescriptionInputs.TangentSpaceTangent");
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}
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if (requirements.requiresBitangent != 0)
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{
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if ((requirements.requiresBitangent & NeededCoordinateSpace.Object) > 0)
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activeFields.Add("VertexDescriptionInputs.ObjectSpaceBiTangent");
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if ((requirements.requiresBitangent & NeededCoordinateSpace.View) > 0)
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activeFields.Add("VertexDescriptionInputs.ViewSpaceBiTangent");
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if ((requirements.requiresBitangent & NeededCoordinateSpace.World) > 0)
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activeFields.Add("VertexDescriptionInputs.WorldSpaceBiTangent");
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if ((requirements.requiresBitangent & NeededCoordinateSpace.Tangent) > 0)
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activeFields.Add("VertexDescriptionInputs.TangentSpaceBiTangent");
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}
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if (requirements.requiresViewDir != 0)
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{
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if ((requirements.requiresViewDir & NeededCoordinateSpace.Object) > 0)
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activeFields.Add("VertexDescriptionInputs.ObjectSpaceViewDirection");
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if ((requirements.requiresViewDir & NeededCoordinateSpace.View) > 0)
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activeFields.Add("VertexDescriptionInputs.ViewSpaceViewDirection");
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if ((requirements.requiresViewDir & NeededCoordinateSpace.World) > 0)
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activeFields.Add("VertexDescriptionInputs.WorldSpaceViewDirection");
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if ((requirements.requiresViewDir & NeededCoordinateSpace.Tangent) > 0)
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activeFields.Add("VertexDescriptionInputs.TangentSpaceViewDirection");
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}
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if (requirements.requiresPosition != 0)
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{
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if ((requirements.requiresPosition & NeededCoordinateSpace.Object) > 0)
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activeFields.Add("VertexDescriptionInputs.ObjectSpacePosition");
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if ((requirements.requiresPosition & NeededCoordinateSpace.View) > 0)
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activeFields.Add("VertexDescriptionInputs.ViewSpacePosition");
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if ((requirements.requiresPosition & NeededCoordinateSpace.World) > 0)
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activeFields.Add("VertexDescriptionInputs.WorldSpacePosition");
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if ((requirements.requiresPosition & NeededCoordinateSpace.Tangent) > 0)
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activeFields.Add("VertexDescriptionInputs.TangentSpacePosition");
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}
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foreach (var channel in requirements.requiresMeshUVs.Distinct())
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{
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activeFields.Add("VertexDescriptionInputs." + channel.GetUVName());
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}
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}
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// TODO: move this out of HDRPShaderStructs
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static public void AddActiveFieldsFromPixelGraphRequirements(HashSet<string> activeFields, ShaderGraphRequirements requirements)
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{
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if (requirements.requiresScreenPosition)
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{
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activeFields.Add("SurfaceDescriptionInputs.ScreenPosition");
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}
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if (requirements.requiresVertexColor)
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{
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activeFields.Add("SurfaceDescriptionInputs.VertexColor");
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}
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if (requirements.requiresFaceSign)
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{
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activeFields.Add("SurfaceDescriptionInputs.FaceSign");
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}
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if (requirements.requiresNormal != 0)
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{
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if ((requirements.requiresNormal & NeededCoordinateSpace.Object) > 0)
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activeFields.Add("SurfaceDescriptionInputs.ObjectSpaceNormal");
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if ((requirements.requiresNormal & NeededCoordinateSpace.View) > 0)
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activeFields.Add("SurfaceDescriptionInputs.ViewSpaceNormal");
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if ((requirements.requiresNormal & NeededCoordinateSpace.World) > 0)
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activeFields.Add("SurfaceDescriptionInputs.WorldSpaceNormal");
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if ((requirements.requiresNormal & NeededCoordinateSpace.Tangent) > 0)
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activeFields.Add("SurfaceDescriptionInputs.TangentSpaceNormal");
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}
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if (requirements.requiresTangent != 0)
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{
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if ((requirements.requiresTangent & NeededCoordinateSpace.Object) > 0)
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activeFields.Add("SurfaceDescriptionInputs.ObjectSpaceTangent");
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if ((requirements.requiresTangent & NeededCoordinateSpace.View) > 0)
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activeFields.Add("SurfaceDescriptionInputs.ViewSpaceTangent");
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if ((requirements.requiresTangent & NeededCoordinateSpace.World) > 0)
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activeFields.Add("SurfaceDescriptionInputs.WorldSpaceTangent");
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if ((requirements.requiresTangent & NeededCoordinateSpace.Tangent) > 0)
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activeFields.Add("SurfaceDescriptionInputs.TangentSpaceTangent");
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}
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if (requirements.requiresBitangent != 0)
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{
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if ((requirements.requiresBitangent & NeededCoordinateSpace.Object) > 0)
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activeFields.Add("SurfaceDescriptionInputs.ObjectSpaceBiTangent");
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if ((requirements.requiresBitangent & NeededCoordinateSpace.View) > 0)
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activeFields.Add("SurfaceDescriptionInputs.ViewSpaceBiTangent");
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if ((requirements.requiresBitangent & NeededCoordinateSpace.World) > 0)
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activeFields.Add("SurfaceDescriptionInputs.WorldSpaceBiTangent");
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if ((requirements.requiresBitangent & NeededCoordinateSpace.Tangent) > 0)
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activeFields.Add("SurfaceDescriptionInputs.TangentSpaceBiTangent");
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}
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if (requirements.requiresViewDir != 0)
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{
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if ((requirements.requiresViewDir & NeededCoordinateSpace.Object) > 0)
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activeFields.Add("SurfaceDescriptionInputs.ObjectSpaceViewDirection");
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if ((requirements.requiresViewDir & NeededCoordinateSpace.View) > 0)
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activeFields.Add("SurfaceDescriptionInputs.ViewSpaceViewDirection");
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if ((requirements.requiresViewDir & NeededCoordinateSpace.World) > 0)
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activeFields.Add("SurfaceDescriptionInputs.WorldSpaceViewDirection");
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if ((requirements.requiresViewDir & NeededCoordinateSpace.Tangent) > 0)
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activeFields.Add("SurfaceDescriptionInputs.TangentSpaceViewDirection");
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}
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if (requirements.requiresPosition != 0)
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{
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if ((requirements.requiresPosition & NeededCoordinateSpace.Object) > 0)
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activeFields.Add("SurfaceDescriptionInputs.ObjectSpacePosition");
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if ((requirements.requiresPosition & NeededCoordinateSpace.View) > 0)
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|
activeFields.Add("SurfaceDescriptionInputs.ViewSpacePosition");
|
|
|
|
if ((requirements.requiresPosition & NeededCoordinateSpace.World) > 0)
|
|
activeFields.Add("SurfaceDescriptionInputs.WorldSpacePosition");
|
|
|
|
if ((requirements.requiresPosition & NeededCoordinateSpace.Tangent) > 0)
|
|
activeFields.Add("SurfaceDescriptionInputs.TangentSpacePosition");
|
|
}
|
|
|
|
foreach (var channel in requirements.requiresMeshUVs.Distinct())
|
|
{
|
|
activeFields.Add("SurfaceDescriptionInputs." + channel.GetUVName());
|
|
}
|
|
}
|
|
|
|
public static void AddRequiredFields(
|
|
List<string> passRequiredFields, // fields the pass requires
|
|
HashSet<string> activeFields)
|
|
{
|
|
if (passRequiredFields != null)
|
|
{
|
|
foreach (var requiredField in passRequiredFields)
|
|
{
|
|
activeFields.Add(requiredField);
|
|
}
|
|
}
|
|
}
|
|
|
|
public static void Generate(
|
|
ShaderGenerator codeResult,
|
|
HashSet<string> activeFields)
|
|
{
|
|
// propagate requirements using dependencies
|
|
{
|
|
ShaderSpliceUtil.ApplyDependencies(
|
|
activeFields,
|
|
new List<Dependency[]>()
|
|
{
|
|
FragInputs.dependencies,
|
|
VaryingsMeshToPS.standardDependencies,
|
|
SurfaceDescriptionInputs.dependencies,
|
|
VertexDescriptionInputs.dependencies
|
|
});
|
|
}
|
|
|
|
// generate code based on requirements
|
|
ShaderSpliceUtil.BuildType(typeof(AttributesMesh), activeFields, codeResult);
|
|
ShaderSpliceUtil.BuildType(typeof(VaryingsMeshToPS), activeFields, codeResult);
|
|
ShaderSpliceUtil.BuildType(typeof(VaryingsMeshToDS), activeFields, codeResult);
|
|
ShaderSpliceUtil.BuildPackedType(typeof(VaryingsMeshToPS), activeFields, codeResult);
|
|
ShaderSpliceUtil.BuildPackedType(typeof(VaryingsMeshToDS), activeFields, codeResult);
|
|
}
|
|
};
|
|
|
|
public struct Pass
|
|
{
|
|
public string Name;
|
|
public string LightMode;
|
|
public string ShaderPassName;
|
|
public List<string> Includes;
|
|
public string TemplateName;
|
|
public List<string> ExtraDefines;
|
|
public List<int> VertexShaderSlots; // These control what slots are used by the pass vertex shader
|
|
public List<int> PixelShaderSlots; // These control what slots are used by the pass pixel shader
|
|
public string CullOverride;
|
|
public string BlendOverride;
|
|
public string BlendOpOverride;
|
|
public string ZTestOverride;
|
|
public string ZWriteOverride;
|
|
public string ColorMaskOverride;
|
|
public List<string> StencilOverride;
|
|
public List<string> RequiredFields; // feeds into the dependency analysis
|
|
public ShaderGraphRequirements requirements;
|
|
};
|
|
|
|
public static class HDSubShaderUtilities
|
|
{
|
|
public static bool GenerateShaderPass(AbstractMaterialNode masterNode, Pass pass, GenerationMode mode, SurfaceMaterialOptions materialOptions, HashSet<string> activeFields, ShaderGenerator result, List<string> sourceAssetDependencyPaths)
|
|
{
|
|
var templateLocation = Path.Combine(Path.Combine(Path.Combine(HDEditorUtils.GetHDRenderPipelinePath(), "Editor"), "ShaderGraph"), pass.TemplateName);
|
|
if (!File.Exists(templateLocation))
|
|
{
|
|
// TODO: produce error here
|
|
return false;
|
|
}
|
|
|
|
bool debugOutput = false;
|
|
|
|
if (sourceAssetDependencyPaths != null)
|
|
sourceAssetDependencyPaths.Add(templateLocation);
|
|
|
|
// grab all of the active nodes (for pixel and vertex graphs)
|
|
var vertexNodes = ListPool<INode>.Get();
|
|
NodeUtils.DepthFirstCollectNodesFromNode(vertexNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.VertexShaderSlots);
|
|
|
|
var pixelNodes = ListPool<INode>.Get();
|
|
NodeUtils.DepthFirstCollectNodesFromNode(pixelNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.PixelShaderSlots);
|
|
|
|
// graph requirements describe what the graph itself requires
|
|
var pixelRequirements = ShaderGraphRequirements.FromNodes(pixelNodes, ShaderStageCapability.Fragment, false); // TODO: is ShaderStageCapability.Fragment correct?
|
|
var vertexRequirements = ShaderGraphRequirements.FromNodes(vertexNodes, ShaderStageCapability.Vertex, false);
|
|
|
|
// Function Registry tracks functions to remove duplicates, it wraps a string builder that stores the combined function string
|
|
ShaderStringBuilder graphNodeFunctions = new ShaderStringBuilder();
|
|
graphNodeFunctions.IncreaseIndent();
|
|
var functionRegistry = new FunctionRegistry(graphNodeFunctions);
|
|
|
|
// TODO: this can be a shared function for all HDRP master nodes -- From here through GraphUtil.GenerateSurfaceDescription(..)
|
|
|
|
// Build the list of active slots based on what the pass requires
|
|
var pixelSlots = HDSubShaderUtilities.FindMaterialSlotsOnNode(pass.PixelShaderSlots, masterNode);
|
|
var vertexSlots = HDSubShaderUtilities.FindMaterialSlotsOnNode(pass.VertexShaderSlots, masterNode);
|
|
|
|
// properties used by either pixel and vertex shader
|
|
PropertyCollector sharedProperties = new PropertyCollector();
|
|
|
|
// build the graph outputs structure to hold the results of each active slots (and fill out activeFields to indicate they are active)
|
|
string pixelGraphInputStructName = "SurfaceDescriptionInputs";
|
|
string pixelGraphOutputStructName = "SurfaceDescription";
|
|
string pixelGraphEvalFunctionName = "SurfaceDescriptionFunction";
|
|
ShaderStringBuilder pixelGraphEvalFunction = new ShaderStringBuilder();
|
|
ShaderStringBuilder pixelGraphOutputs = new ShaderStringBuilder();
|
|
|
|
// build initial requirements
|
|
HDRPShaderStructs.AddActiveFieldsFromPixelGraphRequirements(activeFields, pixelRequirements);
|
|
|
|
// build the graph outputs structure, and populate activeFields with the fields of that structure
|
|
GraphUtil.GenerateSurfaceDescriptionStruct(pixelGraphOutputs, pixelSlots, true, pixelGraphOutputStructName, activeFields);
|
|
|
|
// Build the graph evaluation code, to evaluate the specified slots
|
|
GraphUtil.GenerateSurfaceDescriptionFunction(
|
|
pixelNodes,
|
|
masterNode,
|
|
masterNode.owner as AbstractMaterialGraph,
|
|
pixelGraphEvalFunction,
|
|
functionRegistry,
|
|
sharedProperties,
|
|
pixelRequirements, // TODO : REMOVE UNUSED
|
|
mode,
|
|
pixelGraphEvalFunctionName,
|
|
pixelGraphOutputStructName,
|
|
null,
|
|
pixelSlots,
|
|
pixelGraphInputStructName);
|
|
|
|
string vertexGraphInputStructName = "VertexDescriptionInputs";
|
|
string vertexGraphOutputStructName = "VertexDescription";
|
|
string vertexGraphEvalFunctionName = "VertexDescriptionFunction";
|
|
ShaderStringBuilder vertexGraphEvalFunction = new ShaderStringBuilder();
|
|
ShaderStringBuilder vertexGraphOutputs = new ShaderStringBuilder();
|
|
|
|
// check for vertex animation -- enables HAVE_VERTEX_MODIFICATION
|
|
bool vertexActive = false;
|
|
if (masterNode.IsSlotConnected(PBRMasterNode.PositionSlotId))
|
|
{
|
|
vertexActive = true;
|
|
activeFields.Add("features.modifyMesh");
|
|
HDRPShaderStructs.AddActiveFieldsFromVertexGraphRequirements(activeFields, vertexRequirements);
|
|
|
|
// -------------------------------------
|
|
// Generate Output structure for Vertex Description function
|
|
GraphUtil.GenerateVertexDescriptionStruct(vertexGraphOutputs, vertexSlots, vertexGraphOutputStructName, activeFields);
|
|
|
|
// -------------------------------------
|
|
// Generate Vertex Description function
|
|
GraphUtil.GenerateVertexDescriptionFunction(
|
|
masterNode.owner as AbstractMaterialGraph,
|
|
vertexGraphEvalFunction,
|
|
functionRegistry,
|
|
sharedProperties,
|
|
mode,
|
|
vertexNodes,
|
|
vertexSlots,
|
|
vertexGraphInputStructName,
|
|
vertexGraphEvalFunctionName,
|
|
vertexGraphOutputStructName);
|
|
}
|
|
|
|
var blendCode = new ShaderStringBuilder();
|
|
var cullCode = new ShaderStringBuilder();
|
|
var zTestCode = new ShaderStringBuilder();
|
|
var zWriteCode = new ShaderStringBuilder();
|
|
var stencilCode = new ShaderStringBuilder();
|
|
var colorMaskCode = new ShaderStringBuilder();
|
|
HDSubShaderUtilities.BuildRenderStatesFromPassAndMaterialOptions(pass, materialOptions, blendCode, cullCode, zTestCode, zWriteCode, stencilCode, colorMaskCode);
|
|
|
|
HDRPShaderStructs.AddRequiredFields(pass.RequiredFields, activeFields);
|
|
|
|
// apply dependencies to the active fields, and build interpolators (TODO: split this function)
|
|
var packedInterpolatorCode = new ShaderGenerator();
|
|
HDRPShaderStructs.Generate(
|
|
packedInterpolatorCode,
|
|
activeFields);
|
|
|
|
// debug output all active fields
|
|
var interpolatorDefines = new ShaderGenerator();
|
|
if (debugOutput)
|
|
{
|
|
interpolatorDefines.AddShaderChunk("// ACTIVE FIELDS:");
|
|
foreach (string f in activeFields)
|
|
{
|
|
interpolatorDefines.AddShaderChunk("// " + f);
|
|
}
|
|
}
|
|
|
|
// build graph inputs structures
|
|
ShaderGenerator pixelGraphInputs = new ShaderGenerator();
|
|
ShaderSpliceUtil.BuildType(typeof(HDRPShaderStructs.SurfaceDescriptionInputs), activeFields, pixelGraphInputs);
|
|
ShaderGenerator vertexGraphInputs = new ShaderGenerator();
|
|
ShaderSpliceUtil.BuildType(typeof(HDRPShaderStructs.VertexDescriptionInputs), activeFields, vertexGraphInputs);
|
|
|
|
ShaderGenerator defines = new ShaderGenerator();
|
|
{
|
|
defines.AddShaderChunk(string.Format("#define SHADERPASS {0}", pass.ShaderPassName), true);
|
|
if (pass.ExtraDefines != null)
|
|
{
|
|
foreach (var define in pass.ExtraDefines)
|
|
defines.AddShaderChunk(define);
|
|
}
|
|
defines.AddGenerator(interpolatorDefines);
|
|
}
|
|
|
|
var shaderPassIncludes = new ShaderGenerator();
|
|
if (pass.Includes != null)
|
|
{
|
|
foreach (var include in pass.Includes)
|
|
shaderPassIncludes.AddShaderChunk(include);
|
|
}
|
|
|
|
|
|
// build graph code
|
|
var graph = new ShaderGenerator();
|
|
{
|
|
graph.AddShaderChunk("// Shared Graph Properties (uniform inputs)");
|
|
graph.AddShaderChunk(sharedProperties.GetPropertiesDeclaration(1));
|
|
|
|
if (vertexActive)
|
|
{
|
|
graph.AddShaderChunk("// Vertex Graph Inputs");
|
|
graph.Indent();
|
|
graph.AddGenerator(vertexGraphInputs);
|
|
graph.Deindent();
|
|
graph.AddShaderChunk("// Vertex Graph Outputs");
|
|
graph.Indent();
|
|
graph.AddShaderChunk(vertexGraphOutputs.ToString());
|
|
graph.Deindent();
|
|
}
|
|
|
|
graph.AddShaderChunk("// Pixel Graph Inputs");
|
|
graph.Indent();
|
|
graph.AddGenerator(pixelGraphInputs);
|
|
graph.Deindent();
|
|
graph.AddShaderChunk("// Pixel Graph Outputs");
|
|
graph.Indent();
|
|
graph.AddShaderChunk(pixelGraphOutputs.ToString());
|
|
graph.Deindent();
|
|
|
|
graph.AddShaderChunk("// Shared Graph Node Functions");
|
|
graph.AddShaderChunk(graphNodeFunctions.ToString());
|
|
|
|
if (vertexActive)
|
|
{
|
|
graph.AddShaderChunk("// Vertex Graph Evaluation");
|
|
graph.Indent();
|
|
graph.AddShaderChunk(vertexGraphEvalFunction.ToString());
|
|
graph.Deindent();
|
|
}
|
|
|
|
graph.AddShaderChunk("// Pixel Graph Evaluation");
|
|
graph.Indent();
|
|
graph.AddShaderChunk(pixelGraphEvalFunction.ToString());
|
|
graph.Deindent();
|
|
}
|
|
|
|
// build the hash table of all named fragments TODO: could make this Dictionary<string, ShaderGenerator / string> ?
|
|
Dictionary<string, string> namedFragments = new Dictionary<string, string>();
|
|
namedFragments.Add("${Defines}", defines.GetShaderString(2, false));
|
|
namedFragments.Add("${Graph}", graph.GetShaderString(2, false));
|
|
namedFragments.Add("${LightMode}", pass.LightMode);
|
|
namedFragments.Add("${PassName}", pass.Name);
|
|
namedFragments.Add("${Includes}", shaderPassIncludes.GetShaderString(2, false));
|
|
namedFragments.Add("${InterpolatorPacking}", packedInterpolatorCode.GetShaderString(2, false));
|
|
namedFragments.Add("${Blending}", blendCode.ToString());
|
|
namedFragments.Add("${Culling}", cullCode.ToString());
|
|
namedFragments.Add("${ZTest}", zTestCode.ToString());
|
|
namedFragments.Add("${ZWrite}", zWriteCode.ToString());
|
|
namedFragments.Add("${Stencil}", stencilCode.ToString());
|
|
namedFragments.Add("${ColorMask}", colorMaskCode.ToString());
|
|
namedFragments.Add("${LOD}", materialOptions.lod.ToString());
|
|
|
|
// process the template to generate the shader code for this pass TODO: could make this a shared function
|
|
string[] templateLines = File.ReadAllLines(templateLocation);
|
|
System.Text.StringBuilder builder = new System.Text.StringBuilder();
|
|
foreach (string line in templateLines)
|
|
{
|
|
ShaderSpliceUtil.PreprocessShaderCode(line, activeFields, namedFragments, builder, debugOutput);
|
|
}
|
|
|
|
result.AddShaderChunk(builder.ToString(), false);
|
|
|
|
return true;
|
|
}
|
|
|
|
public static List<MaterialSlot> FindMaterialSlotsOnNode(IEnumerable<int> slots, AbstractMaterialNode node)
|
|
{
|
|
var activeSlots = new List<MaterialSlot>();
|
|
if (slots != null)
|
|
{
|
|
foreach (var id in slots)
|
|
{
|
|
MaterialSlot slot = node.FindSlot<MaterialSlot>(id);
|
|
if (slot != null)
|
|
{
|
|
activeSlots.Add(slot);
|
|
}
|
|
}
|
|
}
|
|
return activeSlots;
|
|
}
|
|
|
|
public static void BuildRenderStatesFromPassAndMaterialOptions(
|
|
Pass pass,
|
|
SurfaceMaterialOptions materialOptions,
|
|
ShaderStringBuilder blendCode,
|
|
ShaderStringBuilder cullCode,
|
|
ShaderStringBuilder zTestCode,
|
|
ShaderStringBuilder zWriteCode,
|
|
ShaderStringBuilder stencilCode,
|
|
ShaderStringBuilder colorMaskCode)
|
|
{
|
|
if (pass.BlendOverride != null)
|
|
{
|
|
blendCode.AppendLine(pass.BlendOverride);
|
|
}
|
|
else
|
|
{
|
|
materialOptions.GetBlend(blendCode);
|
|
}
|
|
|
|
if (pass.BlendOpOverride != null)
|
|
{
|
|
blendCode.AppendLine(pass.BlendOpOverride);
|
|
}
|
|
|
|
if (pass.CullOverride != null)
|
|
{
|
|
cullCode.AppendLine(pass.CullOverride);
|
|
}
|
|
else
|
|
{
|
|
materialOptions.GetCull(cullCode);
|
|
}
|
|
|
|
if (pass.ZTestOverride != null)
|
|
{
|
|
zTestCode.AppendLine(pass.ZTestOverride);
|
|
}
|
|
else
|
|
{
|
|
materialOptions.GetDepthTest(zTestCode);
|
|
}
|
|
|
|
if (pass.ZWriteOverride != null)
|
|
{
|
|
zWriteCode.AppendLine(pass.ZWriteOverride);
|
|
}
|
|
else
|
|
{
|
|
materialOptions.GetDepthWrite(zWriteCode);
|
|
}
|
|
|
|
if (pass.ColorMaskOverride != null)
|
|
{
|
|
colorMaskCode.AppendLine(pass.ColorMaskOverride);
|
|
}
|
|
else
|
|
{
|
|
// material option default is to not declare anything for color mask
|
|
}
|
|
|
|
if (pass.StencilOverride != null)
|
|
{
|
|
foreach (var str in pass.StencilOverride)
|
|
{
|
|
stencilCode.AppendLine(str);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
stencilCode.AppendLine("// Default Stencil");
|
|
}
|
|
}
|
|
|
|
public static SurfaceMaterialOptions BuildMaterialOptions(SurfaceType surfaceType, AlphaMode alphaMode, bool twoSided)
|
|
{
|
|
SurfaceMaterialOptions materialOptions = new SurfaceMaterialOptions();
|
|
if (surfaceType == SurfaceType.Opaque)
|
|
{
|
|
materialOptions.srcBlend = SurfaceMaterialOptions.BlendMode.One;
|
|
materialOptions.dstBlend = SurfaceMaterialOptions.BlendMode.Zero;
|
|
materialOptions.zTest = SurfaceMaterialOptions.ZTest.LEqual;
|
|
materialOptions.zWrite = SurfaceMaterialOptions.ZWrite.On;
|
|
materialOptions.renderQueue = SurfaceMaterialOptions.RenderQueue.Geometry;
|
|
materialOptions.renderType = SurfaceMaterialOptions.RenderType.Opaque;
|
|
}
|
|
else
|
|
{
|
|
switch (alphaMode)
|
|
{
|
|
case AlphaMode.Alpha:
|
|
materialOptions.srcBlend = SurfaceMaterialOptions.BlendMode.SrcAlpha;
|
|
materialOptions.dstBlend = SurfaceMaterialOptions.BlendMode.OneMinusSrcAlpha;
|
|
materialOptions.zTest = SurfaceMaterialOptions.ZTest.LEqual;
|
|
materialOptions.zWrite = SurfaceMaterialOptions.ZWrite.Off;
|
|
materialOptions.renderQueue = SurfaceMaterialOptions.RenderQueue.Transparent;
|
|
materialOptions.renderType = SurfaceMaterialOptions.RenderType.Transparent;
|
|
break;
|
|
case AlphaMode.Additive:
|
|
materialOptions.srcBlend = SurfaceMaterialOptions.BlendMode.One;
|
|
materialOptions.dstBlend = SurfaceMaterialOptions.BlendMode.One;
|
|
materialOptions.zTest = SurfaceMaterialOptions.ZTest.LEqual;
|
|
materialOptions.zWrite = SurfaceMaterialOptions.ZWrite.Off;
|
|
materialOptions.renderQueue = SurfaceMaterialOptions.RenderQueue.Transparent;
|
|
materialOptions.renderType = SurfaceMaterialOptions.RenderType.Transparent;
|
|
break;
|
|
// TODO: other blend modes
|
|
}
|
|
}
|
|
|
|
materialOptions.cullMode = twoSided ? SurfaceMaterialOptions.CullMode.Off : SurfaceMaterialOptions.CullMode.Back;
|
|
|
|
return materialOptions;
|
|
}
|
|
}
|
|
}
|