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305 行
12 KiB
305 行
12 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using Data.Util;
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using UnityEditor.Graphing;
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using UnityEditor.ShaderGraph;
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using UnityEditor.ShaderGraph.Internal;
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using UnityEngine.Rendering;
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using UnityEngine.Rendering.Universal;
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namespace UnityEditor.Rendering.Universal
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{
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[Serializable]
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[FormerName("UnityEngine.Experimental.Rendering.LightweightPipeline.LightWeightUnlitSubShader")]
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[FormerName("UnityEditor.ShaderGraph.LightWeightUnlitSubShader")]
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[FormerName("UnityEditor.Rendering.LWRP.LightWeightUnlitSubShader")]
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[FormerName("UnityEngine.Rendering.LWRP.LightWeightUnlitSubShader")]
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class UniversalUnlitSubShader : IUnlitSubShader
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{
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#region Passes
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ShaderPass m_UnlitPass = new ShaderPass
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{
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// Definition
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displayName = "Pass",
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referenceName = "SHADERPASS_UNLIT",
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passInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/UnlitPass.hlsl",
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varyingsInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl",
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useInPreview = true,
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// Port mask
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vertexPorts = new List<int>()
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{
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UnlitMasterNode.PositionSlotId,
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UnlitMasterNode.VertNormalSlotId,
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UnlitMasterNode.VertTangentSlotId
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},
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pixelPorts = new List<int>
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{
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UnlitMasterNode.ColorSlotId,
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UnlitMasterNode.AlphaSlotId,
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UnlitMasterNode.AlphaThresholdSlotId
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},
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// Pass setup
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includes = new List<string>()
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{
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"Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl",
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"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl",
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"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl",
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"Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl",
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},
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pragmas = new List<string>()
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{
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"prefer_hlslcc gles",
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"exclude_renderers d3d11_9x",
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"target 2.0",
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"multi_compile_instancing",
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},
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keywords = new KeywordDescriptor[]
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{
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s_LightmapKeyword,
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s_DirectionalLightmapCombinedKeyword,
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s_SampleGIKeyword,
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},
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};
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ShaderPass m_DepthOnlyPass = new ShaderPass()
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{
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// Definition
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displayName = "DepthOnly",
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referenceName = "SHADERPASS_DEPTHONLY",
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lightMode = "DepthOnly",
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passInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/DepthOnlyPass.hlsl",
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varyingsInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl",
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useInPreview = true,
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// Port mask
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vertexPorts = new List<int>()
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{
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UnlitMasterNode.PositionSlotId,
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UnlitMasterNode.VertNormalSlotId,
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UnlitMasterNode.VertTangentSlotId
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},
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pixelPorts = new List<int>()
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{
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UnlitMasterNode.AlphaSlotId,
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UnlitMasterNode.AlphaThresholdSlotId
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},
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// Render State Overrides
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ZWriteOverride = "ZWrite On",
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ColorMaskOverride = "ColorMask 0",
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// Pass setup
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includes = new List<string>()
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{
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"Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl",
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"Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl",
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"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl",
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"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl",
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"Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl",
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},
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pragmas = new List<string>()
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{
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"prefer_hlslcc gles",
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"exclude_renderers d3d11_9x",
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"target 2.0",
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"multi_compile_instancing",
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},
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};
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ShaderPass m_ShadowCasterPass = new ShaderPass()
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{
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// Definition
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displayName = "ShadowCaster",
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referenceName = "SHADERPASS_SHADOWCASTER",
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lightMode = "ShadowCaster",
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passInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/ShadowCasterPass.hlsl",
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varyingsInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl",
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// Port mask
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vertexPorts = new List<int>()
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{
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UnlitMasterNode.PositionSlotId,
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UnlitMasterNode.VertNormalSlotId,
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UnlitMasterNode.VertTangentSlotId
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},
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pixelPorts = new List<int>()
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{
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UnlitMasterNode.AlphaSlotId,
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UnlitMasterNode.AlphaThresholdSlotId
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},
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// Required fields
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requiredAttributes = new List<string>()
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{
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"Attributes.normalOS",
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},
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// Render State Overrides
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ZWriteOverride = "ZWrite On",
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ZTestOverride = "ZTest LEqual",
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// Pass setup
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includes = new List<string>()
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{
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"Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl",
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"Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl",
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"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl",
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"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl",
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"Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl",
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"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Shadows.hlsl",
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},
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pragmas = new List<string>()
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{
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"prefer_hlslcc gles",
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"exclude_renderers d3d11_9x",
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"target 2.0",
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"multi_compile_instancing",
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},
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keywords = new KeywordDescriptor[]
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{
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s_SmoothnessChannelKeyword,
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},
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};
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#endregion
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#region Keywords
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static KeywordDescriptor s_LightmapKeyword = new KeywordDescriptor()
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{
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displayName = "Lightmap",
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referenceName = "LIGHTMAP_ON",
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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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};
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static KeywordDescriptor s_DirectionalLightmapCombinedKeyword = new KeywordDescriptor()
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{
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displayName = "Directional Lightmap Combined",
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referenceName = "DIRLIGHTMAP_COMBINED",
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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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};
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static KeywordDescriptor s_SampleGIKeyword = new KeywordDescriptor()
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{
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displayName = "Sample GI",
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referenceName = "_SAMPLE_GI",
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type = KeywordType.Boolean,
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definition = KeywordDefinition.ShaderFeature,
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scope = KeywordScope.Global,
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};
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static KeywordDescriptor s_SmoothnessChannelKeyword = new KeywordDescriptor()
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{
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displayName = "Smoothness Channel",
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referenceName = "_SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A",
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type = KeywordType.Boolean,
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definition = KeywordDefinition.ShaderFeature,
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scope = KeywordScope.Global,
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};
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#endregion
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public int GetPreviewPassIndex() { return 0; }
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private static ActiveFields GetActiveFieldsFromMasterNode(UnlitMasterNode masterNode, ShaderPass pass)
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{
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var activeFields = new ActiveFields();
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var baseActiveFields = activeFields.baseInstance;
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// Graph Vertex
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if(masterNode.IsSlotConnected(UnlitMasterNode.PositionSlotId) ||
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masterNode.IsSlotConnected(UnlitMasterNode.VertNormalSlotId) ||
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masterNode.IsSlotConnected(UnlitMasterNode.VertTangentSlotId))
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{
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baseActiveFields.Add("features.graphVertex");
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}
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// Graph Pixel (always enabled)
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baseActiveFields.Add("features.graphPixel");
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if (masterNode.IsSlotConnected(UnlitMasterNode.AlphaThresholdSlotId) ||
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masterNode.GetInputSlots<Vector1MaterialSlot>().First(x => x.id == UnlitMasterNode.AlphaThresholdSlotId).value > 0.0f)
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{
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baseActiveFields.Add("AlphaClip");
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}
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// Keywords for transparent
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// #pragma shader_feature _SURFACE_TYPE_TRANSPARENT
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if (masterNode.surfaceType != ShaderGraph.SurfaceType.Opaque)
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{
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// transparent-only defines
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baseActiveFields.Add("SurfaceType.Transparent");
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// #pragma shader_feature _ _BLENDMODE_ALPHA _BLENDMODE_ADD _BLENDMODE_PRE_MULTIPLY
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if (masterNode.alphaMode == AlphaMode.Alpha)
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{
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baseActiveFields.Add("BlendMode.Alpha");
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}
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else if (masterNode.alphaMode == AlphaMode.Additive)
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{
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baseActiveFields.Add("BlendMode.Add");
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}
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else if (masterNode.alphaMode == AlphaMode.Premultiply)
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{
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baseActiveFields.Add("BlendMode.Premultiply");
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}
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}
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return activeFields;
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}
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private static bool GenerateShaderPass(UnlitMasterNode masterNode, ShaderPass pass, GenerationMode mode, ShaderGenerator result, List<string> sourceAssetDependencyPaths)
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{
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UniversalShaderGraphUtilities.SetRenderState(masterNode.surfaceType, masterNode.alphaMode, masterNode.twoSided.isOn, ref pass);
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// apply master node options to active fields
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var activeFields = GetActiveFieldsFromMasterNode(masterNode, pass);
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// use standard shader pass generation
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return ShaderGraph.GenerationUtils.GenerateShaderPass(masterNode, pass, mode, activeFields, result, sourceAssetDependencyPaths,
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UniversalShaderGraphResources.s_Dependencies, UniversalShaderGraphResources.s_ResourceClassName, UniversalShaderGraphResources.s_AssemblyName);
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}
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public string GetSubshader(IMasterNode masterNode, GenerationMode mode, List<string> sourceAssetDependencyPaths = null)
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{
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if (sourceAssetDependencyPaths != null)
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{
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// LightWeightPBRSubShader.cs
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sourceAssetDependencyPaths.Add(AssetDatabase.GUIDToAssetPath("3ef30c5c1d5fc412f88511ef5818b654"));
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}
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// Master Node data
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var unlitMasterNode = masterNode as UnlitMasterNode;
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var subShader = new ShaderGenerator();
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subShader.AddShaderChunk("SubShader", true);
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subShader.AddShaderChunk("{", true);
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subShader.Indent();
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{
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var surfaceTags = ShaderGenerator.BuildMaterialTags(unlitMasterNode.surfaceType);
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var tagsBuilder = new ShaderStringBuilder(0);
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surfaceTags.GetTags(tagsBuilder, "UniversalPipeline");
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subShader.AddShaderChunk(tagsBuilder.ToString());
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GenerateShaderPass(unlitMasterNode, m_UnlitPass, mode, subShader, sourceAssetDependencyPaths);
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GenerateShaderPass(unlitMasterNode, m_ShadowCasterPass, mode, subShader, sourceAssetDependencyPaths);
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GenerateShaderPass(unlitMasterNode, m_DepthOnlyPass, mode, subShader, sourceAssetDependencyPaths);
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}
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subShader.Deindent();
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subShader.AddShaderChunk("}", true);
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return subShader.GetShaderString(0);
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}
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public bool IsPipelineCompatible(RenderPipelineAsset renderPipelineAsset)
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{
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return renderPipelineAsset is UniversalRenderPipelineAsset;
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}
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public UniversalUnlitSubShader() { }
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}
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}
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