Boat Attack使用了Universal RP的许多新图形功能,可以用于探索 Universal RP 的使用方式和技巧。
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using System;
using System.Collections.Generic;
using System.Linq;
using UnityEditor.Graphing;
using UnityEditor.ShaderGraph;
using UnityEditor.ShaderGraph.Internal;
using UnityEngine.Rendering;
using UnityEngine.Rendering.Universal;
using Data.Util;
namespace UnityEditor.Rendering.Universal
{
[Serializable]
[FormerName("UnityEditor.Experimental.Rendering.LightweightPipeline.LightWeightPBRSubShader")]
[FormerName("UnityEditor.ShaderGraph.LightWeightPBRSubShader")]
[FormerName("UnityEditor.Rendering.LWRP.LightWeightPBRSubShader")]
class UniversalPBRSubShader : IPBRSubShader
{
#region Passes
ShaderPass m_ForwardPass = new ShaderPass
{
// Definition
displayName = "Universal Forward",
referenceName = "SHADERPASS_FORWARD",
lightMode = "UniversalForward",
passInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/PBRForwardPass.hlsl",
varyingsInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl",
useInPreview = true,
// Port mask
vertexPorts = new List<int>()
{
PBRMasterNode.PositionSlotId,
PBRMasterNode.VertNormalSlotId,
PBRMasterNode.VertTangentSlotId
},
pixelPorts = new List<int>
{
PBRMasterNode.AlbedoSlotId,
PBRMasterNode.NormalSlotId,
PBRMasterNode.EmissionSlotId,
PBRMasterNode.MetallicSlotId,
PBRMasterNode.SpecularSlotId,
PBRMasterNode.SmoothnessSlotId,
PBRMasterNode.OcclusionSlotId,
PBRMasterNode.AlphaSlotId,
PBRMasterNode.AlphaThresholdSlotId
},
// Required fields
requiredAttributes = new List<string>()
{
"Attributes.uv1", //needed for meta vertex position
},
// Required fields
requiredVaryings = new List<string>()
{
"Varyings.positionWS",
"Varyings.normalWS",
"Varyings.tangentWS", //needed for vertex lighting
"Varyings.bitangentWS",
"Varyings.viewDirectionWS",
"Varyings.lightmapUV",
"Varyings.sh",
"Varyings.fogFactorAndVertexLight", //fog and vertex lighting, vert input is dependency
"Varyings.shadowCoord", //shadow coord, vert input is dependency
},
// Pass setup
includes = new List<string>()
{
"Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl",
"Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Shadows.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Input.hlsl",
},
pragmas = new List<string>()
{
"prefer_hlslcc gles",
"exclude_renderers d3d11_9x",
"target 2.0",
"multi_compile_fog",
"multi_compile_instancing",
},
keywords = new KeywordDescriptor[]
{
s_LightmapKeyword,
s_DirectionalLightmapCombinedKeyword,
s_MainLightShadowsKeyword,
s_MainLightShadowsCascadeKeyword,
s_AdditionalLightsKeyword,
s_AdditionalLightShadowsKeyword,
s_ShadowsSoftKeyword,
s_MixedLightingSubtractiveKeyword,
},
};
ShaderPass m_DepthOnlyPass = new ShaderPass()
{
// Definition
displayName = "DepthOnly",
referenceName = "SHADERPASS_DEPTHONLY",
lightMode = "DepthOnly",
passInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/DepthOnlyPass.hlsl",
varyingsInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl",
useInPreview = true,
// Port mask
vertexPorts = new List<int>()
{
PBRMasterNode.PositionSlotId,
PBRMasterNode.VertNormalSlotId,
PBRMasterNode.VertTangentSlotId
},
pixelPorts = new List<int>()
{
PBRMasterNode.AlphaSlotId,
PBRMasterNode.AlphaThresholdSlotId
},
// Render State Overrides
ZWriteOverride = "ZWrite On",
ColorMaskOverride = "ColorMask 0",
// Pass setup
includes = new List<string>()
{
"Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl",
"Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl",
},
pragmas = new List<string>()
{
"prefer_hlslcc gles",
"exclude_renderers d3d11_9x",
"target 2.0",
"multi_compile_instancing",
},
};
ShaderPass m_ShadowCasterPass = new ShaderPass()
{
// Definition
displayName = "ShadowCaster",
referenceName = "SHADERPASS_SHADOWCASTER",
lightMode = "ShadowCaster",
passInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/ShadowCasterPass.hlsl",
varyingsInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl",
// Port mask
vertexPorts = new List<int>()
{
PBRMasterNode.PositionSlotId,
PBRMasterNode.VertNormalSlotId,
PBRMasterNode.VertTangentSlotId
},
pixelPorts = new List<int>()
{
PBRMasterNode.AlphaSlotId,
PBRMasterNode.AlphaThresholdSlotId
},
// Required fields
requiredAttributes = new List<string>()
{
"Attributes.normalOS",
},
// Render State Overrides
ZWriteOverride = "ZWrite On",
ZTestOverride = "ZTest LEqual",
// Pass setup
includes = new List<string>()
{
"Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl",
"Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Shadows.hlsl",
},
pragmas = new List<string>()
{
"prefer_hlslcc gles",
"exclude_renderers d3d11_9x",
"target 2.0",
"multi_compile_instancing",
},
};
ShaderPass m_LitMetaPass = new ShaderPass()
{
// Definition
displayName = "Meta",
referenceName = "SHADERPASS_META",
lightMode = "Meta",
passInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/LightingMetaPass.hlsl",
varyingsInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl",
// Port mask
vertexPorts = new List<int>()
{
PBRMasterNode.PositionSlotId,
PBRMasterNode.VertNormalSlotId,
PBRMasterNode.VertTangentSlotId
},
pixelPorts = new List<int>()
{
PBRMasterNode.AlbedoSlotId,
PBRMasterNode.EmissionSlotId,
PBRMasterNode.AlphaSlotId,
PBRMasterNode.AlphaThresholdSlotId
},
// Required fields
requiredAttributes = new List<string>()
{
"Attributes.uv1", //needed for meta vertex position
"Attributes.uv2", //needed for meta vertex position
},
// Render State Overrides
ZWriteOverride = "ZWrite On",
ZTestOverride = "ZTest LEqual",
// Pass setup
includes = new List<string>()
{
"Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/MetaInput.hlsl",
},
pragmas = new List<string>()
{
"prefer_hlslcc gles",
"exclude_renderers d3d11_9x",
"target 2.0",
},
keywords = new KeywordDescriptor[]
{
s_SmoothnessChannelKeyword,
},
};
ShaderPass m_2DPass = new ShaderPass()
{
// Definition
referenceName = "SHADERPASS_2D",
lightMode = "Universal2D",
passInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/PBR2DPass.hlsl",
varyingsInclude = "Packages/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl",
// Port mask
vertexPorts = new List<int>()
{
PBRMasterNode.PositionSlotId,
PBRMasterNode.VertNormalSlotId,
PBRMasterNode.VertTangentSlotId
},
pixelPorts = new List<int>()
{
PBRMasterNode.AlbedoSlotId,
PBRMasterNode.AlphaSlotId,
PBRMasterNode.AlphaThresholdSlotId
},
// Pass setup
includes = new List<string>()
{
"Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl",
"Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl",
"Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl",
},
pragmas = new List<string>()
{
"prefer_hlslcc gles",
"exclude_renderers d3d11_9x",
"target 2.0",
"multi_compile_instancing",
},
};
#endregion
#region Keywords
static KeywordDescriptor s_LightmapKeyword = new KeywordDescriptor()
{
displayName = "Lightmap",
referenceName = "LIGHTMAP_ON",
type = KeywordType.Boolean,
definition = KeywordDefinition.MultiCompile,
scope = KeywordScope.Global,
};
static KeywordDescriptor s_DirectionalLightmapCombinedKeyword = new KeywordDescriptor()
{
displayName = "Directional Lightmap Combined",
referenceName = "DIRLIGHTMAP_COMBINED",
type = KeywordType.Boolean,
definition = KeywordDefinition.MultiCompile,
scope = KeywordScope.Global,
};
static KeywordDescriptor s_SampleGIKeyword = new KeywordDescriptor()
{
displayName = "Sample GI",
referenceName = "_SAMPLE_GI",
type = KeywordType.Boolean,
definition = KeywordDefinition.ShaderFeature,
scope = KeywordScope.Global,
};
static KeywordDescriptor s_MainLightShadowsKeyword = new KeywordDescriptor()
{
displayName = "Main Light Shadows",
referenceName = "_MAIN_LIGHT_SHADOWS",
type = KeywordType.Boolean,
definition = KeywordDefinition.MultiCompile,
scope = KeywordScope.Global,
};
static KeywordDescriptor s_MainLightShadowsCascadeKeyword = new KeywordDescriptor()
{
displayName = "Main Light Shadows Cascade",
referenceName = "_MAIN_LIGHT_SHADOWS_CASCADE",
type = KeywordType.Boolean,
definition = KeywordDefinition.MultiCompile,
scope = KeywordScope.Global,
};
static KeywordDescriptor s_AdditionalLightsKeyword = new KeywordDescriptor()
{
displayName = "Additional Lights",
referenceName = "_ADDITIONAL",
type = KeywordType.Enum,
definition = KeywordDefinition.MultiCompile,
scope = KeywordScope.Global,
entries = new KeywordEntry[]
{
new KeywordEntry() { displayName = "Vertex", referenceName = "LIGHTS_VERTEX" },
new KeywordEntry() { displayName = "Fragment", referenceName = "LIGHTS" },
new KeywordEntry() { displayName = "Off", referenceName = "OFF" },
}
};
static KeywordDescriptor s_AdditionalLightShadowsKeyword = new KeywordDescriptor()
{
displayName = "Additional Light Shadows",
referenceName = "_ADDITIONAL_LIGHT_SHADOWS",
type = KeywordType.Boolean,
definition = KeywordDefinition.MultiCompile,
scope = KeywordScope.Global,
};
static KeywordDescriptor s_ShadowsSoftKeyword = new KeywordDescriptor()
{
displayName = "Shadows Soft",
referenceName = "_SHADOWS_SOFT",
type = KeywordType.Boolean,
definition = KeywordDefinition.MultiCompile,
scope = KeywordScope.Global,
};
static KeywordDescriptor s_MixedLightingSubtractiveKeyword = new KeywordDescriptor()
{
displayName = "Mixed Lighting Subtractive",
referenceName = "_MIXED_LIGHTING_SUBTRACTIVE",
type = KeywordType.Boolean,
definition = KeywordDefinition.MultiCompile,
scope = KeywordScope.Global,
};
static KeywordDescriptor s_SmoothnessChannelKeyword = new KeywordDescriptor()
{
displayName = "Smoothness Channel",
referenceName = "_SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A",
type = KeywordType.Boolean,
definition = KeywordDefinition.ShaderFeature,
scope = KeywordScope.Global,
};
#endregion
public int GetPreviewPassIndex() { return 0; }
ActiveFields GetActiveFieldsFromMasterNode(PBRMasterNode masterNode, ShaderPass pass)
{
var activeFields = new ActiveFields();
var baseActiveFields = activeFields.baseInstance;
// Graph Vertex
if(masterNode.IsSlotConnected(PBRMasterNode.PositionSlotId) ||
masterNode.IsSlotConnected(PBRMasterNode.VertNormalSlotId) ||
masterNode.IsSlotConnected(PBRMasterNode.VertTangentSlotId))
{
baseActiveFields.Add("features.graphVertex");
}
// Graph Pixel (always enabled)
baseActiveFields.Add("features.graphPixel");
if (masterNode.IsSlotConnected(PBRMasterNode.AlphaThresholdSlotId) ||
masterNode.GetInputSlots<Vector1MaterialSlot>().First(x => x.id == PBRMasterNode.AlphaThresholdSlotId).value > 0.0f)
{
baseActiveFields.Add("AlphaClip");
}
if (masterNode.model == PBRMasterNode.Model.Specular)
baseActiveFields.Add("SpecularSetup");
if (masterNode.IsSlotConnected(PBRMasterNode.NormalSlotId))
{
baseActiveFields.Add("Normal");
}
// Keywords for transparent
// #pragma shader_feature _SURFACE_TYPE_TRANSPARENT
if (masterNode.surfaceType != ShaderGraph.SurfaceType.Opaque)
{
// transparent-only defines
baseActiveFields.Add("SurfaceType.Transparent");
// #pragma shader_feature _ _BLENDMODE_ALPHA _BLENDMODE_ADD _BLENDMODE_PRE_MULTIPLY
if (masterNode.alphaMode == AlphaMode.Alpha)
{
baseActiveFields.Add("BlendMode.Alpha");
}
else if (masterNode.alphaMode == AlphaMode.Additive)
{
baseActiveFields.Add("BlendMode.Add");
}
else if (masterNode.alphaMode == AlphaMode.Premultiply)
{
baseActiveFields.Add("BlendMode.Premultiply");
}
}
return activeFields;
}
bool GenerateShaderPass(PBRMasterNode masterNode, ShaderPass pass, GenerationMode mode, ShaderGenerator result, List<string> sourceAssetDependencyPaths)
{
UniversalShaderGraphUtilities.SetRenderState(masterNode.surfaceType, masterNode.alphaMode, masterNode.twoSided.isOn, ref pass);
// apply master node options to active fields
var activeFields = GetActiveFieldsFromMasterNode(masterNode, pass);
return ShaderGraph.GenerationUtils.GenerateShaderPass(masterNode, pass, mode, activeFields, result, sourceAssetDependencyPaths,
UniversalShaderGraphResources.s_Dependencies, UniversalShaderGraphResources.s_ResourceClassName, UniversalShaderGraphResources.s_AssemblyName);
}
public string GetSubshader(IMasterNode masterNode, GenerationMode mode, List<string> sourceAssetDependencyPaths = null)
{
if (sourceAssetDependencyPaths != null)
{
// UniversalPBRSubShader.cs
sourceAssetDependencyPaths.Add(AssetDatabase.GUIDToAssetPath("ca91dbeb78daa054c9bbe15fef76361c"));
}
// Master Node data
var pbrMasterNode = masterNode as PBRMasterNode;
var subShader = new ShaderGenerator();
subShader.AddShaderChunk("SubShader", true);
subShader.AddShaderChunk("{", true);
subShader.Indent();
{
var surfaceTags = ShaderGenerator.BuildMaterialTags(pbrMasterNode.surfaceType);
var tagsBuilder = new ShaderStringBuilder(0);
surfaceTags.GetTags(tagsBuilder, "UniversalPipeline");
subShader.AddShaderChunk(tagsBuilder.ToString());
GenerateShaderPass(pbrMasterNode, m_ForwardPass, mode, subShader, sourceAssetDependencyPaths);
GenerateShaderPass(pbrMasterNode, m_ShadowCasterPass, mode, subShader, sourceAssetDependencyPaths);
GenerateShaderPass(pbrMasterNode, m_DepthOnlyPass, mode, subShader, sourceAssetDependencyPaths);
GenerateShaderPass(pbrMasterNode, m_LitMetaPass, mode, subShader, sourceAssetDependencyPaths);
GenerateShaderPass(pbrMasterNode, m_2DPass, mode, subShader, sourceAssetDependencyPaths);
}
subShader.Deindent();
subShader.AddShaderChunk("}", true);
return subShader.GetShaderString(0);
}
public bool IsPipelineCompatible(RenderPipelineAsset renderPipelineAsset)
{
return renderPipelineAsset is UniversalRenderPipelineAsset;
}
public UniversalPBRSubShader() { }
}
}