142 lines
5.1 KiB
C#
142 lines
5.1 KiB
C#
using UnityEngine;
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using UnityEditor.ShaderGraph;
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using static Unity.Rendering.Universal.ShaderUtils;
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using UnityEditor.ShaderGraph.Internal;
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#if HAS_VFX_GRAPH
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using UnityEditor.VFX;
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#endif
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namespace UnityEditor.Rendering.Universal.ShaderGraph
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{
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abstract class UniversalSubTarget : SubTarget<UniversalTarget>, IHasMetadata
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#if HAS_VFX_GRAPH
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, IRequireVFXContext
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#endif
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{
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static readonly GUID kSourceCodeGuid = new GUID("92228d45c1ff66740bfa9e6d97f7e280"); // UniversalSubTarget.cs
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public override void Setup(ref TargetSetupContext context)
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{
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context.AddAssetDependency(kSourceCodeGuid, AssetCollection.Flags.SourceDependency);
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}
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protected abstract ShaderID shaderID { get; }
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#if HAS_VFX_GRAPH
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// VFX Properties
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VFXContext m_ContextVFX = null;
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VFXTaskCompiledData m_TaskDataVFX;
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protected bool TargetsVFX() => m_ContextVFX != null;
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public void ConfigureContextData(VFXContext context, VFXTaskCompiledData data)
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{
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m_ContextVFX = context;
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m_TaskDataVFX = data;
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}
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#endif
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protected SubShaderDescriptor PostProcessSubShader(SubShaderDescriptor subShaderDescriptor)
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{
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#if HAS_VFX_GRAPH
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if (TargetsVFX())
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return VFXSubTarget.PostProcessSubShader(subShaderDescriptor, m_ContextVFX, m_TaskDataVFX);
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#endif
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return subShaderDescriptor;
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}
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public override void GetFields(ref TargetFieldContext context)
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{
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#if HAS_VFX_GRAPH
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if (TargetsVFX())
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VFXSubTarget.GetFields(ref context, m_ContextVFX);
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#endif
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}
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public virtual string identifier => GetType().Name;
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public virtual ScriptableObject GetMetadataObject(GraphDataReadOnly graphData)
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{
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var urpMetadata = ScriptableObject.CreateInstance<UniversalMetadata>();
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urpMetadata.shaderID = shaderID;
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urpMetadata.alphaMode = target.alphaMode;
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if (shaderID != ShaderID.SG_SpriteLit && shaderID != ShaderID.SG_SpriteUnlit)
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{
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urpMetadata.allowMaterialOverride = target.allowMaterialOverride;
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urpMetadata.surfaceType = target.surfaceType;
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urpMetadata.castShadows = target.castShadows;
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urpMetadata.hasVertexModificationInMotionVector = target.additionalMotionVectorMode != AdditionalMotionVectorMode.None || graphData.AnyVertexAnimationActive();
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}
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else
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{
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//Ignore unsupported settings in SpriteUnlit/SpriteLit
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urpMetadata.allowMaterialOverride = false;
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urpMetadata.surfaceType = SurfaceType.Transparent;
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urpMetadata.castShadows = false;
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urpMetadata.hasVertexModificationInMotionVector = false;
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}
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urpMetadata.isVFXCompatible = graphData.IsVFXCompatible();
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return urpMetadata;
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}
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private int lastMaterialNeedsUpdateHash = 0;
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protected virtual int ComputeMaterialNeedsUpdateHash() => 0;
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public override object saveContext
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{
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get
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{
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int hash = ComputeMaterialNeedsUpdateHash();
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bool needsUpdate = hash != lastMaterialNeedsUpdateHash;
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if (needsUpdate)
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lastMaterialNeedsUpdateHash = hash;
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return new UniversalShaderGraphSaveContext { updateMaterials = needsUpdate };
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}
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}
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}
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internal static class SubShaderUtils
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{
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internal static void AddFloatProperty(this PropertyCollector collector, string referenceName, float defaultValue, HLSLDeclaration declarationType = HLSLDeclaration.DoNotDeclare)
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{
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collector.AddShaderProperty(new Vector1ShaderProperty
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{
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floatType = FloatType.Default,
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hidden = true,
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overrideHLSLDeclaration = true,
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hlslDeclarationOverride = declarationType,
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value = defaultValue,
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displayName = referenceName,
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overrideReferenceName = referenceName,
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});
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}
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internal static void AddToggleProperty(this PropertyCollector collector, string referenceName, bool defaultValue, HLSLDeclaration declarationType = HLSLDeclaration.DoNotDeclare)
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{
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collector.AddShaderProperty(new BooleanShaderProperty
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{
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value = defaultValue,
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hidden = true,
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overrideHLSLDeclaration = true,
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hlslDeclarationOverride = declarationType,
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displayName = referenceName,
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overrideReferenceName = referenceName,
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});
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}
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// Overloads to do inline PassDescriptor modifications
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// NOTE: param order should match PassDescriptor field order for consistency
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#region PassVariant
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internal static PassDescriptor PassVariant(in PassDescriptor source, PragmaCollection pragmas)
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{
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var result = source;
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result.pragmas = pragmas;
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return result;
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}
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#endregion
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}
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}
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