146 lines
6.1 KiB
C#
146 lines
6.1 KiB
C#
using System;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.Rendering;
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using UnityEngine.UIElements;
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namespace UnityEditor.ShaderGraph
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{
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sealed class PreviewTarget : Target
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{
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static readonly GUID kSourceCodeGuid = new GUID("7464b9fcde08e5645a16b9b8ae1e573c"); // PreviewTarget.cs
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public PreviewTarget()
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{
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displayName = "Preview";
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isHidden = true;
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}
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public override bool IsActive() => false;
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internal override bool ignoreCustomInterpolators => false;
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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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context.AddSubShader(SubShaders.Preview);
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}
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public override void GetFields(ref TargetFieldContext context)
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{
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}
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public override void GetActiveBlocks(ref TargetActiveBlockContext context)
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{
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}
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public override void GetPropertiesGUI(ref TargetPropertyGUIContext context, Action onChange, Action<String> registerUndo)
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{
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}
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public override bool WorksWithSRP(RenderPipelineAsset scriptableRenderPipeline) => true;
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static class SubShaders
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{
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public static SubShaderDescriptor Preview = new SubShaderDescriptor()
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{
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renderQueue = "Geometry",
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renderType = "Opaque",
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generatesPreview = true,
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passes = new PassCollection { Passes.Preview },
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};
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}
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static class Passes
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{
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public static PassDescriptor Preview = new PassDescriptor()
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{
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// Definition
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referenceName = "SHADERPASS_PREVIEW",
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useInPreview = true,
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// Templates
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passTemplatePath = GenerationUtils.GetDefaultTemplatePath("PassMesh.template"),
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sharedTemplateDirectories = GenerationUtils.GetDefaultSharedTemplateDirectories(),
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// Collections
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structs = new StructCollection
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{
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{ Structs.Attributes },
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{ StructDescriptors.PreviewVaryings },
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{ Structs.SurfaceDescriptionInputs },
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{ Structs.VertexDescriptionInputs },
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},
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fieldDependencies = FieldDependencies.Default,
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pragmas = new PragmaCollection
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{
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{ Pragma.Vertex("vert") },
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{ Pragma.Fragment("frag") },
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},
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defines = new DefineCollection
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{
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{ KeywordDescriptors.PreviewKeyword, 1 },
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},
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includes = new IncludeCollection
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{
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// Pre-graph
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{ "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl", IncludeLocation.Pregraph },
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{ "Packages/com.unity.render-pipelines.core/ShaderLibrary/Packing.hlsl", IncludeLocation.Pregraph },
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{ "Packages/com.unity.render-pipelines.core/ShaderLibrary/TextureStack.hlsl", IncludeLocation.Pregraph }, // TODO: put this on a conditional
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{ "Packages/com.unity.render-pipelines.core/ShaderLibrary/NormalSurfaceGradient.hlsl", IncludeLocation.Pregraph },
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{ "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl", IncludeLocation.Pregraph },
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{ "Packages/com.unity.render-pipelines.core/ShaderLibrary/Texture.hlsl", IncludeLocation.Pregraph },
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{ "Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl", IncludeLocation.Pregraph },
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{ "Packages/com.unity.render-pipelines.core/ShaderLibrary/EntityLighting.hlsl", IncludeLocation.Pregraph },
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{ "Packages/com.unity.shadergraph/ShaderGraphLibrary/ShaderVariables.hlsl", IncludeLocation.Pregraph },
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{ "Packages/com.unity.shadergraph/ShaderGraphLibrary/ShaderVariablesFunctions.hlsl", IncludeLocation.Pregraph },
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{ "Packages/com.unity.shadergraph/ShaderGraphLibrary/Functions.hlsl", IncludeLocation.Pregraph },
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// Post-graph
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{ "Packages/com.unity.shadergraph/ShaderGraphLibrary/PreviewVaryings.hlsl", IncludeLocation.Postgraph },
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{ "Packages/com.unity.shadergraph/ShaderGraphLibrary/PreviewPass.hlsl", IncludeLocation.Postgraph },
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}
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};
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}
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static class StructDescriptors
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{
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public static StructDescriptor PreviewVaryings = new StructDescriptor()
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{
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name = "Varyings",
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packFields = true,
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fields = new[]
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{
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StructFields.Varyings.positionCS,
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StructFields.Varyings.positionWS,
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StructFields.Varyings.positionPredisplacementWS,
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StructFields.Varyings.normalWS,
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StructFields.Varyings.tangentWS,
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StructFields.Varyings.texCoord0,
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StructFields.Varyings.texCoord1,
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StructFields.Varyings.texCoord2,
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StructFields.Varyings.texCoord3,
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StructFields.Varyings.color,
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StructFields.Varyings.viewDirectionWS,
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StructFields.Varyings.screenPosition,
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StructFields.Varyings.instanceID,
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StructFields.Varyings.vertexID,
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StructFields.Varyings.cullFace,
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}
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};
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}
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static class KeywordDescriptors
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{
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public static KeywordDescriptor PreviewKeyword = new KeywordDescriptor()
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{
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displayName = "Preview",
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referenceName = "SHADERGRAPH_PREVIEW",
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type = KeywordType.Boolean,
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definition = KeywordDefinition.MultiCompile,
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scope = KeywordScope.Global,
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stages = KeywordShaderStage.All,
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};
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}
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}
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}
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