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03-UnrealEngine/VisualEffect/Niagara Module笔记.md

@@ -48,21 +48,39 @@ Particle的Module都是c++级别写死的。基本位于`Engine\Source\Runtime\E
 ## Niagara里面的相关类型 
 ### DataInterface
 基类为UNiagaraDataInterface。
-- UNiagaraDataInterface2DArrayTexture
-- UNiagaraDataInterfaceVirtualTexture
+- UNiagaraDataInterfaceTexture：NiagaraDataInterfaceTextureTemplate.ush
+	- LoadTexture2D()
+	- GatherRedTexture2D()
+	- SampleTexture2D()
+	- SamplePseudoVolumeTexture()
+	- GetTextureDimensions()
+	- GetNumMipLevels()
+- UNiagaraDataInterface2DArrayTexture：NiagaraDataInterfaceTexture2DArrayTemplate.ush
+	- LoadTexture()
+	- GatherRedTexture()
+	- SampleTexture()
+	- TextureDimension()
+- UNiagaraDataInterfaceVirtualTexture：NiagaraDataInterfaceVirtualTextureTemplate.ush
+	- GetAttributesValid()
+	- SampleRVTLayer()
+	- SampleRVT()
 
 ## Texture相关Module
 - Textures
 	- SampleTexture
 	- SamplePseudoVolumeTexture
+		- 主要调用SamplePseudoVolumeTexture()
 	- SubUV_TextureSample
+		- 
 	- WorldAlignedTextureSample
 - SubUV
 	- SubUVAnimation
 	- V2
 		- SubUVAnimation
 
+里面的一些节点调用一些函数，这些函数都在对应的**UNiagaraDataInterface**中的**GetFunctions()** 定义，具体的逻辑位于 对应的**xxxTemplate.ush**
 ## 生成的代码
+高斯3D里Niagara采用PositionTexture生成的相关代码：
 ```c++
 int2			Emitter_SampleTexture_Texture_TextureSize;
 int				Emitter_SampleTexture_Texture_MipLevels;