BlueRoseNote/02-Note/DAWA/ASoul/渲染方案/材质部分.md

# 相关资产路径
Content/ResArt/CommandMaterial
- [ ] [[#Functions]]
- [x] [[#MatCap]]
- [ ] [[#MaterialInstance]]
- [ ] [[#Materials]]
- [ ] [[#Outline]]
- [x] [[#Textures]]

# Functions
- [x] [[#ShadingModels]]
	- MF_ToonPBRShadingModel
	- MF_ToonBaseShadingModel
	- MF_ToonSkinShadingModel
	- MF_ToonHairShadingModel
- [x] Effects
	- MF_Dissolve
	- MF_EdgeLight
	- MF_Fur
- [x] Tools
	- MF_DecodeArrayIDAndAlpha：分离输入浮点数的整数与小数部分。整数部分作为TextureArrayID，小数部分作为Alpha参数。
		- 主要用于MF_FaceOverlay的**Face Overlay Color**效果与M_Penetrate的**Eye Overlay Color**效果。
	- MF_Hash11
	- MF_Hash12
	- MF_Hash13
	- MF_Hash22
	- MF_Hash23
- [x] ***CameraLightCollection***：各个角色的主光照颜色、边缘光颜色与主光亮度以及LightDir。
- [ ] MF_CharacterMainLightIntensity：

## ShadingModels
采用CustomNode构造FMaterialAttributesde的之后传递到MaterialAttribute模式的材质中，其他骚操作还有：
1. 使用宏开启MRT5：`#define PIXELSHADEROUTPUT_MRT5 1`
2. 设置ShadingModelID：`Result.ShadingModel = 14;`
3. 使用FToonShadingPerMaterialCustomData ToonShadingPerMaterialCustomData（位于Common.ush)来传递卡通渲染用数据，之后在BasePassPixelShader.ush中将数据塞入GBuffer中。
### MF_ToonPBRShadingModel
```c++
FMaterialAttributes Result;
Result.BaseColor = float3(1.0, 1.0, 1.0);
Result.Metallic = 0.0;
Result.Specular = 0.0;
Result.Roughness = 0.0;
Result.Anisotropy = 0.0;
Result.EmissiveColor = float3(0.0, 0.0, 0.0);
Result.Opacity = 1.0;
Result.OpacityMask = 1.0;
Result.Normal = float3(0.0, 0.0, 1.0);
Result.Tangent = float3(1.0, 0.0, 0.0);
Result.WorldPositionOffset = float3(0.0, 0.0, 0.0);
Result.SubsurfaceColor = float3(1.0, 1.0, 1.0);
Result.ClearCoat = 1.0;
Result.ClearCoatRoughness = 0.1;
Result.AmbientOcclusion = 1.0;
Result.Refraction = float3(0.0, 0.0, 0.0);
Result.PixelDepthOffset = 0.0;
Result.ShadingModel = 1;
Result.CustomizedUV0 = float2(0.0, 0.0);
Result.CustomizedUV1 = float2(0.0, 0.0);
Result.CustomizedUV2 = float2(0.0, 0.0);
Result.CustomizedUV3 = float2(0.0, 0.0);
Result.CustomizedUV4 = float2(0.0, 0.0);
Result.CustomizedUV5 = float2(0.0, 0.0);
Result.CustomizedUV6 = float2(0.0, 0.0);
Result.CustomizedUV7 = float2(0.0, 0.0);
Result.BentNormal = float3(0.0, 0.0, 1.0);
Result.ClearCoatBottomNormal = float3(0.0, 0.0, 1.0);
Result.CustomEyeTangent = float3(0.0, 0.0, 0.0);

#define PIXELSHADEROUTPUT_MRT5 1

Result.ShadingModel = 14;
ToonShadingPerMaterialCustomData.ToonSpecularColor = saturate(SpecularColor.rgb);
ToonShadingPerMaterialCustomData.ToonShadowColor = saturate(ShadowColor.rgb);
ToonShadingPerMaterialCustomData.ToonShadowLocation = saturate(CutPosition);
ToonShadingPerMaterialCustomData.ToonShadowSmoothness = saturate(CutSmoothness);

return Result;
```

### MF_ToonBaseShadingModel
```c++
FMaterialAttributes Result;
Result.BaseColor = float3(1.0, 1.0, 1.0);
Result.Metallic = 0.0;
Result.Specular = 0.0;
Result.Roughness = 0.0;
Result.Anisotropy = 0.0;
Result.EmissiveColor = float3(0.0, 0.0, 0.0);
Result.Opacity = 1.0;
Result.OpacityMask = 1.0;
Result.Normal = float3(0.0, 0.0, 1.0);
Result.Tangent = float3(1.0, 0.0, 0.0);
Result.WorldPositionOffset = float3(0.0, 0.0, 0.0);
Result.SubsurfaceColor = float3(1.0, 1.0, 1.0);
Result.ClearCoat = 1.0;
Result.ClearCoatRoughness = 0.1;
Result.AmbientOcclusion = 1.0;
Result.Refraction = float3(0.0, 0.0, 0.0);
Result.PixelDepthOffset = 0.0;
Result.ShadingModel = 1;
Result.CustomizedUV0 = float2(0.0, 0.0);
Result.CustomizedUV1 = float2(0.0, 0.0);
Result.CustomizedUV2 = float2(0.0, 0.0);
Result.CustomizedUV3 = float2(0.0, 0.0);
Result.CustomizedUV4 = float2(0.0, 0.0);
Result.CustomizedUV5 = float2(0.0, 0.0);
Result.CustomizedUV6 = float2(0.0, 0.0);
Result.CustomizedUV7 = float2(0.0, 0.0);
Result.BentNormal = float3(0.0, 0.0, 1.0);
Result.ClearCoatBottomNormal = float3(0.0, 0.0, 1.0);
Result.CustomEyeTangent = float3(0.0, 0.0, 0.0);

#define PIXELSHADEROUTPUT_MRT5 1

Result.ShadingModel = 13;
ToonShadingPerMaterialCustomData.ToonShadowColor = saturate(ShadowColor.rgb);
ToonShadingPerMaterialCustomData.ToonShadowLocation = clamp(ShadowLocation, 0, SpecularLocation);
ToonShadingPerMaterialCustomData.ToonShadowSmoothness = saturate(ShadowSmoothness);
ToonShadingPerMaterialCustomData.ToonForceShadow = saturate(ForceShadow);
ToonShadingPerMaterialCustomData.ToonSecondaryShadowColor = saturate(SecondaryShadowColor.rgb);
ToonShadingPerMaterialCustomData.ToonSecondaryShadowLocation = clamp(SecondaryShadowLocation, 0, SpecularLocation);
ToonShadingPerMaterialCustomData.ToonSecondaryShadowSmoothness = saturate(SecondaryShadowSmoothness);

return Result;
```

### MF_ToonSkinShadingModel
```c++
FMaterialAttributes Result;
Result.BaseColor = float3(1.0, 1.0, 1.0);
Result.Metallic = 0.0;
Result.Specular = 0.0;
Result.Roughness = 0.0;
Result.Anisotropy = 0.0;
Result.EmissiveColor = float3(0.0, 0.0, 0.0);
Result.Opacity = 1.0;
Result.OpacityMask = 1.0;
Result.Normal = float3(0.0, 0.0, 1.0);
Result.Tangent = float3(1.0, 0.0, 0.0);
Result.WorldPositionOffset = float3(0.0, 0.0, 0.0);
Result.SubsurfaceColor = float3(1.0, 1.0, 1.0);
Result.ClearCoat = 1.0;
Result.ClearCoatRoughness = 0.1;
Result.AmbientOcclusion = 1.0;
Result.Refraction = float3(0.0, 0.0, 0.0);
Result.PixelDepthOffset = 0.0;
Result.ShadingModel = 1;
Result.CustomizedUV0 = float2(0.0, 0.0);
Result.CustomizedUV1 = float2(0.0, 0.0);
Result.CustomizedUV2 = float2(0.0, 0.0);
Result.CustomizedUV3 = float2(0.0, 0.0);
Result.CustomizedUV4 = float2(0.0, 0.0);
Result.CustomizedUV5 = float2(0.0, 0.0);
Result.CustomizedUV6 = float2(0.0, 0.0);
Result.CustomizedUV7 = float2(0.0, 0.0);
Result.BentNormal = float3(0.0, 0.0, 1.0);
Result.ClearCoatBottomNormal = float3(0.0, 0.0, 1.0);
Result.CustomEyeTangent = float3(0.0, 0.0, 0.0);

#define PIXELSHADEROUTPUT_MRT5 1

Result.ShadingModel = 15;
ToonShadingPerMaterialCustomData.ToonShadowColor = saturate(ShadowColor.rgb);
ToonShadingPerMaterialCustomData.ToonShadowLocation = saturate(CutPosition);
ToonShadingPerMaterialCustomData.ToonShadowSmoothness = saturate(CutSmoothness);

return Result;
```

### MF_ToonHairShadingModel
```c++
FMaterialAttributes Result;
Result.BaseColor = float3(1.0, 1.0, 1.0);
Result.Metallic = 0.0;
Result.Specular = 0.0;
Result.Roughness = 0.0;
Result.Anisotropy = 0.0;
Result.EmissiveColor = float3(0.0, 0.0, 0.0);
Result.Opacity = 1.0;
Result.OpacityMask = 1.0;
Result.Normal = float3(0.0, 0.0, 1.0);
Result.Tangent = float3(1.0, 0.0, 0.0);
Result.WorldPositionOffset = float3(0.0, 0.0, 0.0);
Result.SubsurfaceColor = float3(1.0, 1.0, 1.0);
Result.ClearCoat = 1.0;
Result.ClearCoatRoughness = 0.1;
Result.AmbientOcclusion = 1.0;
Result.Refraction = float3(0.0, 0.0, 0.0);
Result.PixelDepthOffset = 0.0;
Result.ShadingModel = 1;
Result.CustomizedUV0 = float2(0.0, 0.0);
Result.CustomizedUV1 = float2(0.0, 0.0);
Result.CustomizedUV2 = float2(0.0, 0.0);
Result.CustomizedUV3 = float2(0.0, 0.0);
Result.CustomizedUV4 = float2(0.0, 0.0);
Result.CustomizedUV5 = float2(0.0, 0.0);
Result.CustomizedUV6 = float2(0.0, 0.0);
Result.CustomizedUV7 = float2(0.0, 0.0);
Result.BentNormal = float3(0.0, 0.0, 1.0);
Result.ClearCoatBottomNormal = float3(0.0, 0.0, 1.0);
Result.CustomEyeTangent = float3(0.0, 0.0, 0.0);

Result.ShadingModel = 14;
Result.Anisotropy = 1.0;
ToonShadingPerMaterialCustomData.CustomData0 = saturate(float4(ShadowColor.rgb, ShadowSmoothness));
ToonShadingPerMaterialCustomData.CustomData1 = saturate(float4(SpecularAbsorbance, SpecularRangeParam.xyz));

return Result;
```

## Effects
- **MF_EdgeLight**：边缘光效果，通过UE菲尼尔函数以及一些贴图、变量实现效果。主要被***MF_CharacterEffects***引用。
- **MF_Dissolve**：溶解过度效果。主要被***MF_CharacterEffects***、***MF_SceneEffects***引用。
- MF_Fur：用于制作Fur效果的材质函数，被**ToonShading_Standard_nooffset_fur**引用。主要还是靠***GFur插件***，没有参考意义，升级难度+1。

# Matcap
存放大量Matcap用的**球形环境贴图**。

# Outline
# Textures
存储一些默认贴图与一些测试用（无用）贴图。