新建全局着色器为插件 | 虚幻引擎 4.27 文档

虚幻引擎4插件系统能帮助用户添加大量新功能，而无需重编译和发布整个引擎。以下指南中将重建光学变形（Lens Distortion）全局着色器，展示实现可由蓝图进行控制的全局着色器的方法。

点击查看大图。

此例中将重建现有的Lens Distortion插件（位于 Engine\Plugins\Compositing\LensDistortion 中），将其改为名为 Foo 的新插件，展示此工作流的实现过程。

Shaders in 插件快速入门将对创建全局着色器并用作插件进行讲解。

1 - 代码设置

开始新建虚幻引擎4的插件之前，需要先安装 Visual Studio。此快速入门需要Visual Studio，用户需要对插件代码进行编译，使其能正常运行。如不了解此操作，请查阅[设置 UE4 的 Visual Studio]](ProductionPipelines/DevelopmentSetup/VisualStudioSetup/)文档。

首先新建一个游戏项目并选择空白模板。确保将其设置为 最高质量，且不带 初学者内容包。
项目创建后，Visual Studio将打开，之后即可右键点击ShadersInPlugins项目并选择编译选项编译项目。
项目编译完成后，在Visual Studio中按下 F5 键在 UE4 编辑器中启动ShadersInPlugins项目。
UE4编辑器完成加载后，前往编辑 > 插件打开插件管理器，然后点击“插件”窗口右下角的 新建插件（New Plugin） 选项，调出“新建插件”窗口。

点击查看大图。

在 新建插件 窗口中，选择 空白（Blank） 插件，将其命名为 Foo ，保留所有默认设置。所有操作完成后，按下 创建插件 键创建插件最初需要的全部内容。

点击查看大图。

完成后，关闭UE4和Visual Studio，前往在项目文件夹中创建的 Plugins > Foo 插件文件夹。
在Foo plugins文件夹中添加一个名为 Shaders 的新文件夹，并在其中再新建一个名为 Private 的文件夹。

点击查看大图。

在Private文件夹中新建一个文本文件并将其命名为 MyShader.USF，然后将以下HLSL代码复制粘贴到此文件中，完成操作后保存文件。

须将文件扩展名改为 .USF，否则UE4无法将其识别为着色器文件。

		// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.

		/*=============================================================================
			LensDistortionUVGeneration.usf:将光学变形和不
			变形UV置换贴图生成到一个渲染目标中。

			像素着色器直接计算变形视口UV，
			不对使用Sv_Position和参考方程式的视口UV置换执行变形，
			并将它们保存到红色和绿色的通道中。

			为避免用费拉里法进行解析、
			或在 GPU 上执行牛顿法计算不变形视口 UV 这两种方式
			来对视口UV置换进行变形，这对着色器的工作方式如下：顶点着色器不对网格的顶点执行变形，
			并下传到像素着色器视口 UV 应在屏幕上
			所处的位置，而不进行变形。像素
			着色器可生成不变形视口UV，
			减去像素的视口UV后即可对视口UV置换进行变形。
		=============================================================================*/

		#include "/Engine/Public/Platform.ush"

		// 视口UV坐标中的像素大小。
		float2 PixelUVSize;

		// K1, K2, K3
		float3 RadialDistortionCoefs;

		// P1, P2
		float2 TangentialDistortionCoefs;

		// 未变形视口的相机矩阵。
		float4 UndistortedCameraMatrix;

		// 变形视口的相机矩阵。
		float4 DistortedCameraMatrix;

		// 对渲染目标输出乘法和加法。
		float2 OutputMultiplyAndAdd;

		// 不对V.z=1视图位置进行变形。
		float2 UndistortNormalizedViewPosition(float2 V)
		{
			float2 V2 = V * V;
			float R2 = V2.x + V2.y;

			// 径向变形（额外添加括号是为匹配 MF_Undistortion.uasset）。
			float2 UndistortedV = V * (1.0 + R2 * (RadialDistortionCoefs.x + R2 * (RadialDistortionCoefs.y + R2 * RadialDistortionCoefs.z)));

			// 切向变形。
			UndistortedV.x += TangentialDistortionCoefs.y * (R2 + 2 * V2.x) + 2 * TangentialDistortionCoefs.x * V.x * V.y;
			UndistortedV.y += TangentialDistortionCoefs.x * (R2 + 2 * V2.y) + 2 * TangentialDistortionCoefs.y * V.x * V.y;

			return UndistortedV;
		}

		// 返回变形视口UV的未变形视口UV。
		//
		// 注意：
		// UV创建于左下角。
		float2 UndistortViewportUV(float2 ViewportUV)
		{
			// 已变形视口UV -> 已变形视图位置（z=1）
			float2 DistortedViewPosition = (ViewportUV - DistortedCameraMatrix.zw) / DistortedCameraMatrix.xy;

			// 计算未变形的视图位置（z=1）
			float2 UndistortedViewPosition = UndistortNormalizedViewPosition(DistortedViewPosition);

			// 未变形的视图位置（z=1） -> 未变形的视口UV。
			return UndistortedCameraMatrix.xy * UndistortedViewPosition + UndistortedCameraMatrix.zw;
		}

		// 翻转UV的y组件。
		float2 FlipUV(float2 UV)
		{
			return float2(UV.x, 1 - UV.y);
		}

		void MainVS(
			in uint GlobalVertexId :SV_VertexID,
			out float2 OutVertexDistortedViewportUV :TEXCOORD0,
			out float4 OutPosition :SV_POSITION
			)
		{
			// 计算单元索引。
			uint GridCellIndex = GlobalVertexId / 6;

			// 计算网格中单元行和列的ID。
			uint GridColumnId = GridCellIndex / GRID_SUBDIVISION_Y;
			uint GridRowId = GridCellIndex - GridColumnId * GRID_SUBDIVISION_Y;

			// 计算双三角形网格单元中的顶点ID。
			uint VertexId = GlobalVertexId - GridCellIndex * 6;

			// 计算单元中三角形顶点源自左下角的UV坐标。
			float2 CellVertexUV = float2(0x1 & ((VertexId + 1) / 3), VertexId & 0x1);

			// 计算网格中顶点源自左上角的UV。
			float2 GridInvSize = 1.f / float2(GRID_SUBDIVISION_X, GRID_SUBDIVISION_Y);
			float2 GridVertexUV = FlipUV(
				GridInvSize * (CellVertexUV + float2(GridColumnId, GridRowId)));

			// 标准不含半像素位移。
			GridVertexUV -= PixelUVSize * 0.5;

			// 输出顶点位置。
			OutPosition = float4(FlipUV(
				UndistortViewportUV(GridVertexUV) + PixelUVSize * 0.5) * 2 - 1, 0, 1);

			// 输出顶点源自左上角的UV。
			OutVertexDistortedViewportUV = GridVertexUV;
		}

		void MainPS(
			in noperspective float2 VertexDistortedViewportUV :TEXCOORD0,
			in float4 SvPosition :SV_POSITION,
			out float4 OutColor :SV_Target0
			)
		{
			// 计算像素源自左上角的UV。
			float2 ViewportUV = SvPosition.xy * PixelUVSize;

			// 标准不含半像素位移。
			ViewportUV -= PixelUVSize * 0.5;

			float2 DistortUVtoUndistortUV = (UndistortViewportUV((ViewportUV))) - ViewportUV;
			float2 UndistortUVtoDistortUV = VertexDistortedViewportUV - ViewportUV;

			// 输出置换通道。
			OutColor = OutputMultiplyAndAdd.y + OutputMultiplyAndAdd.x * float4(
				DistortUVtoUndistortUV, UndistortUVtoDistortUV);
		}

/*=============================================================================
			LensDistortionUVGeneration.usf:将光学变形和不
			变形UV置换贴图生成到一个渲染目标中。

像素着色器直接计算变形视口UV，
			不对使用Sv_Position和参考方程式的视口UV置换执行变形，
			并将它们保存到红色和绿色的通道中。

为避免用费拉里法进行解析、
			或在 GPU 上执行牛顿法计算不变形视口 UV 这两种方式
			来对视口UV置换进行变形，这对着色器的工作方式如下：顶点着色器不对网格的顶点执行变形，
			并下传到像素着色器视口 UV 应在屏幕上
			所处的位置，而不进行变形。像素
			着色器可生成不变形视口UV，
			减去像素的视口UV后即可对视口UV置换进行变形。
		=============================================================================*/

#include "/Engine/Public/Platform.ush"

// 视口UV坐标中的像素大小。
		float2 PixelUVSize;

// K1, K2, K3
		float3 RadialDistortionCoefs;

// P1, P2
		float2 TangentialDistortionCoefs;

// 未变形视口的相机矩阵。
		float4 UndistortedCameraMatrix;

// 变形视口的相机矩阵。
		float4 DistortedCameraMatrix;

// 对渲染目标输出乘法和加法。
		float2 OutputMultiplyAndAdd;

// 不对V.z=1视图位置进行变形。
		float2 UndistortNormalizedViewPosition(float2 V)
		{
			float2 V2 = V * V;
			float R2 = V2.x + V2.y;

// 径向变形（额外添加括号是为匹配 MF_Undistortion.uasset）。
			float2 UndistortedV = V * (1.0 + R2 * (RadialDistortionCoefs.x + R2 * (RadialDistortionCoefs.y + R2 * RadialDistortionCoefs.z)));

// 切向变形。
			UndistortedV.x += TangentialDistortionCoefs.y * (R2 + 2 * V2.x) + 2 * TangentialDistortionCoefs.x * V.x * V.y;
			UndistortedV.y += TangentialDistortionCoefs.x * (R2 + 2 * V2.y) + 2 * TangentialDistortionCoefs.y * V.x * V.y;

return UndistortedV;
		}

// 返回变形视口UV的未变形视口UV。
		//
		// 注意：
		// UV创建于左下角。
		float2 UndistortViewportUV(float2 ViewportUV)
		{
			// 已变形视口UV -> 已变形视图位置（z=1）
			float2 DistortedViewPosition = (ViewportUV - DistortedCameraMatrix.zw) / DistortedCameraMatrix.xy;

// 计算未变形的视图位置（z=1）
			float2 UndistortedViewPosition = UndistortNormalizedViewPosition(DistortedViewPosition);

// 未变形的视图位置（z=1） -> 未变形的视口UV。
			return UndistortedCameraMatrix.xy * UndistortedViewPosition + UndistortedCameraMatrix.zw;
		}

// 翻转UV的y组件。
		float2 FlipUV(float2 UV)
		{
			return float2(UV.x, 1 - UV.y);
		}

void MainVS(
			in uint GlobalVertexId :SV_VertexID,
			out float2 OutVertexDistortedViewportUV :TEXCOORD0,
			out float4 OutPosition :SV_POSITION
			)
		{
			// 计算单元索引。
			uint GridCellIndex = GlobalVertexId / 6;

// 计算网格中单元行和列的ID。
			uint GridColumnId = GridCellIndex / GRID_SUBDIVISION_Y;
			uint GridRowId = GridCellIndex - GridColumnId * GRID_SUBDIVISION_Y;

// 计算双三角形网格单元中的顶点ID。
			uint VertexId = GlobalVertexId - GridCellIndex * 6;

// 计算单元中三角形顶点源自左下角的UV坐标。
			float2 CellVertexUV = float2(0x1 & ((VertexId + 1) / 3), VertexId & 0x1);

// 计算网格中顶点源自左上角的UV。
			float2 GridInvSize = 1.f / float2(GRID_SUBDIVISION_X, GRID_SUBDIVISION_Y);
			float2 GridVertexUV = FlipUV(
				GridInvSize * (CellVertexUV + float2(GridColumnId, GridRowId)));

// 标准不含半像素位移。
			GridVertexUV -= PixelUVSize * 0.5;

// 输出顶点位置。
			OutPosition = float4(FlipUV(
				UndistortViewportUV(GridVertexUV) + PixelUVSize * 0.5) * 2 - 1, 0, 1);

// 输出顶点源自左上角的UV。
			OutVertexDistortedViewportUV = GridVertexUV;
		}

void MainPS(
			in noperspective float2 VertexDistortedViewportUV :TEXCOORD0,
			in float4 SvPosition :SV_POSITION,
			out float4 OutColor :SV_Target0
			)
		{
			// 计算像素源自左上角的UV。
			float2 ViewportUV = SvPosition.xy * PixelUVSize;

// 标准不含半像素位移。
			ViewportUV -= PixelUVSize * 0.5;

float2 DistortUVtoUndistortUV = (UndistortViewportUV((ViewportUV))) - ViewportUV;
			float2 UndistortUVtoDistortUV = VertexDistortedViewportUV - ViewportUV;

// 输出置换通道。
			OutColor = OutputMultiplyAndAdd.y + OutputMultiplyAndAdd.x * float4(
				DistortUVtoUndistortUV, UndistortUVtoDistortUV);
		}

现在找到 Foo.uplugin 文件并将其在文本编辑器中打开，用以下文本替代文件中的信息，完成后保存文件。
```
             {
                 "FileVersion" :3,
                 "Version" :1,
                 "VersionName" :"1.0",
                 "FriendlyName" :"Foo",
                 "Description" :"Plugin to play around with shaders.",
                 "Category" :"Sandbox",
                 "CreatedBy" :"Epic Games, Inc.",
                 "CreatedByURL" :"http://epicgames.com",
                 "DocsURL" :"",
                 "MarketplaceURL" :"",
                 "SupportURL" :"",
                 "EnabledByDefault" : false,
                 "CanContainContent" : true,
                 "IsBetaVersion" : false,
                 "Installed" : false,
                 "Modules" :
                 [
                     {
                         "Name" :"Foo",
                         "Type" :"Developer",
                         "LoadingPhase" :"PostConfigInit"
                     }
                 ]
             }
```
{ "FileVersion" :3, "Version" :1, "VersionName" :"1.0", "FriendlyName" :"Foo", "Description" :"Plugin to play around with shaders.", "Category" :"Sandbox", "CreatedBy" :"Epic Games, Inc.", "CreatedByURL" :"http://epicgames.com", "DocsURL" :"", "MarketplaceURL" :"", "SupportURL" :"", "EnabledByDefault" : false, "CanContainContent" : true, "IsBetaVersion" : false, "Installed" : false, "Modules" : [ { "Name" :"Foo", "Type" :"Developer", "LoadingPhase" :"PostConfigInit" } ] }
接下来前往 Plugins\Foo\Source\Foo 并新建文件夹 Classes，然后从 Engine\Plugins\Compositing\LensDistortion 路径下复制 LensDistortionAPI.h 和 LensDistortionBlueprintLibrary.h 文件到该新建文件夹中。

要复制的文件位于 Engine\Plugins\Compositing\LensDistortion 中。

* 类 - 新建文件夹

复制 - LensDistortionAPI.h 复制 - LensDistortionBlueprintLibrary.h

然后前往 Private 文件夹并将 LensDistortionBlueprintLibrary.cpp 和 LensDistortionRendering.cpp 文件复制到此Private文件夹。
- Private - 现有文件夹
  - 复制 - LensDistortionBlueprintLibrary.cpp
  - 复制 - LensDistortionRendering.cpp
现在关闭UE4编辑器和Visual Studio，然后找到项目.U项目文件。找到以后，对其点击右键，选择 生成Visual Studio项目文件（Generate Visual Studio project files） 选项。
重新打开Visual Studio解决方案，然后前往Foo > Classes并打开 LensDistortionAPI.h 文件。在此文件中，将 FLensDistortionCameraModel 替换为 FFooCameraModel。

需在此文件中用FFooCameraModel替换FLensDistortionCameraModel 四次。

			// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.

			#pragma once

			#include "CoreMinimal.h"
			#include "LensDistortionAPI.generated.h"

			/** 光学变形/不变形的数学相机模型。
			*
			* 相机矩阵 =
			* | F.X 0 C.x |
			* | 0 F.Y C.Y |
			* | 0 0 1 |
			*/
			USTRUCT(BlueprintType)
			struct FFooCameraModel
			{
				GENERATED_USTRUCT_BODY()
				FFooCameraModel()
				{
					K1 = K2 = K3 = P1 = P2 = 0.f;
					F = FVector2D(1.f, 1.f);
					C = FVector2D(0.5f, 0.5f);
				}

				/** Radial parameter #1.*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				float K1;

				/** 径向参数 #2。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				float K2;

				/** 径向参数 #3。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				float K3;

				/** 切向参数 #1。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				float P1;

				/** 切向参数 #2。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				float P2;

				/** 相机矩阵的Fx和Fy。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				FVector2D F;

				/** 相机矩阵的Cx和Cy。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				FVector2D C;

				/** 不在视图空间中进行3D向量变形（x, y, z=1.f）并返回（x', y', z'=1.f）。*/
				FVector2D UndistortNormalizedViewPosition(FVector2D V) const;

				/** 返回不变形渲染所需的过扫描因子，避免出现未渲染的变形像素。*/
				float GetUndistortOverscanFactor(
					float DistortedHorizontalFOV,
					float DistortedAspectRatio) const;

				/** 在输出渲染目标中绘制UV置换贴图。
				* - 红色和绿色通道负责变形置换；
				* - 蓝色和透明通道负责不变形置换。
				* @param World 获取渲染设置的当前场景（如特征场景）。
				* @param DistortedHorizontalFOV 变形渲染中理想的水平视野。
				* @param DistortedAspectRatio 变形渲染中理想的高宽比。
				* @param UndistortOverscanFactor 未变形渲染的过扫描因子。
				* @param OutputRenderTarget 进行绘制的渲染目标。不必拥有和变形渲染相同的分辨率或高宽比。
				* @param OutputMultiply 应用在置换上的乘法因子。
				* @param OutputAdd 保存到输出渲染目标中之前被添加到相乘置换的值。
				*/
				void DrawUVDisplacementToRenderTarget(
					class UWorld* World,
					float DistortedHorizontalFOV,
					float DistortedAspectRatio,
					float UndistortOverscanFactor,
					class UTextureRenderTarget2D* OutputRenderTarget,
					float OutputMultiply,
					float OutputAdd) const;

				/** 对比两个光学变形模型并返回其是否相同。*/
				bool operator == (const FFooCameraModel& Other) const
				{
					return (
						K1 == Other.K1 &&
						K2 == Other.K2 &&
						K3 == Other.K3 &&
						P1 == Other.P1 &&
						P2 == Other.P2 &&
						F == Other.F &&
						C == Other.C);
				}

				/** 对比两个光学变形模型并返回其是否不同。*/
				bool operator != (const FFooCameraModel& Other) const
				{
					return !(*this == Other);
				}
			};

#pragma once

#include "CoreMinimal.h"
			#include "LensDistortionAPI.generated.h"

/** 光学变形/不变形的数学相机模型。
			*
			* 相机矩阵 =
			* | F.X 0 C.x |
			* | 0 F.Y C.Y |
			* | 0 0 1 |
			*/
			USTRUCT(BlueprintType)
			struct FFooCameraModel
			{
				GENERATED_USTRUCT_BODY()
				FFooCameraModel()
				{
					K1 = K2 = K3 = P1 = P2 = 0.f;
					F = FVector2D(1.f, 1.f);
					C = FVector2D(0.5f, 0.5f);
				}

/** Radial parameter #1.*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				float K1;

/** 径向参数 #2。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				float K2;

/** 径向参数 #3。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				float K3;

/** 切向参数 #1。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				float P1;

/** 切向参数 #2。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				float P2;

/** 相机矩阵的Fx和Fy。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				FVector2D F;

/** 相机矩阵的Cx和Cy。*/
				UPROPERTY(Interp, EditAnywhere, BlueprintReadWrite, Category = "Lens Distortion|Camera Model")
				FVector2D C;

/** 不在视图空间中进行3D向量变形（x, y, z=1.f）并返回（x', y', z'=1.f）。*/
				FVector2D UndistortNormalizedViewPosition(FVector2D V) const;

/** 返回不变形渲染所需的过扫描因子，避免出现未渲染的变形像素。*/
				float GetUndistortOverscanFactor(
					float DistortedHorizontalFOV,
					float DistortedAspectRatio) const;

/** 在输出渲染目标中绘制UV置换贴图。
				* - 红色和绿色通道负责变形置换；
				* - 蓝色和透明通道负责不变形置换。
				* @param World 获取渲染设置的当前场景（如特征场景）。
				* @param DistortedHorizontalFOV 变形渲染中理想的水平视野。
				* @param DistortedAspectRatio 变形渲染中理想的高宽比。
				* @param UndistortOverscanFactor 未变形渲染的过扫描因子。
				* @param OutputRenderTarget 进行绘制的渲染目标。不必拥有和变形渲染相同的分辨率或高宽比。
				* @param OutputMultiply 应用在置换上的乘法因子。
				* @param OutputAdd 保存到输出渲染目标中之前被添加到相乘置换的值。
				*/
				void DrawUVDisplacementToRenderTarget(
					class UWorld* World,
					float DistortedHorizontalFOV,
					float DistortedAspectRatio,
					float UndistortOverscanFactor,
					class UTextureRenderTarget2D* OutputRenderTarget,
					float OutputMultiply,
					float OutputAdd) const;

/** 对比两个光学变形模型并返回其是否相同。*/
				bool operator == (const FFooCameraModel& Other) const
				{
					return (
						K1 == Other.K1 &&
						K2 == Other.K2 &&
						K3 == Other.K3 &&
						P1 == Other.P1 &&
						P2 == Other.P2 &&
						F == Other.F &&
						C == Other.C);
				}

/** 对比两个光学变形模型并返回其是否不同。*/
				bool operator != (const FFooCameraModel& Other) const
				{
					return !(*this == Other);
				}
			};

接下来打开 LensDistortionBlueprintLibrary.h 文件。此文件控制此节点在蓝图中的显示方式，因此不仅需要将 FLensDistortionCameraModel 替换为 FFooCameraModel，还需要将 Category = "Lens Distortion" 改为 Category = "Foo | Lens Distortion"。

需要在此文件中用FFooCameraModel替换FLensDistortionCameraModel 六次。

		// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.

		#pragma once

		#include "CoreMinimal.h"
		#include "UObject/ObjectMacros.h"
		#include "Classes/Kismet/BlueprintFunctionLibrary.h"
		#include "LensDistortionAPI.h"
		#include "LensDistortionBlueprintLibrary.generated.h"

		UCLASS(MinimalAPI)
		class ULensDistortionBlueprintLibrary : public UBlueprintFunctionLibrary
		{
			GENERATED_UCLASS_BODY()

			/** 返回不变形渲染所需的过扫描因子，避免出现未渲染的变形像素。*/
			UFUNCTION(BlueprintPure, Category = "Foo | Lens Distortion")
			static void GetUndistortOverscanFactor(
				const FFooCameraModel& CameraModel,
				float DistortedHorizontalFOV,
				float DistortedAspectRatio,
				float& UndistortOverscanFactor);

			/** 在输出渲染目标中绘制UV置换贴图。
			* - 红色和绿色通道负责变形置换；
			* - 蓝色和透明通道负责不变形置换。
			* @param DistortedHorizontalFOV 变形渲染中理想的水平视野。
			* @param DistortedAspectRatio 变形渲染中理想的高宽比。
			* @param UndistortOverscanFactor 未变形渲染的过扫描因子。
			* @param OutputRenderTarget 进行绘制的渲染目标。不必拥有和变形渲染相同的分辨率或高宽比。
			* @param OutputMultiply 应用在置换上的乘法因子。
			* @param OutputAdd 保存到输出渲染目标中之前被添加到相乘置换的值。
			*/
			UFUNCTION(BlueprintCallable, Category = "Foo | Lens Distortion", meta = (WorldContext = "WorldContextObject"))
			static void DrawUVDisplacementToRenderTarget(
				const UObject* WorldContextObject,
				const FFooCameraModel& CameraModel,
				float DistortedHorizontalFOV,
				float DistortedAspectRatio,
				float UndistortOverscanFactor,
				class UTextureRenderTarget2D* OutputRenderTarget,
				float OutputMultiply = 0.5,
				float OutputAdd = 0.5
				);

			/* 如果A等于B（A == B）则返回true */
			UFUNCTION(BlueprintPure, meta=(DisplayName = "Equal (LensDistortionCameraModel)", CompactNodeTitle = "==", Keywords = "== equal"), Category = "Foo | Lens Distortion")
			static bool EqualEqual_CompareLensDistortionModels(
				const FFooCameraModel& A,
				const FFooCameraModel& B)
			{
				return A == B;
			}

			/* 如A不等于B（A != B），则返回true */
			UFUNCTION(BlueprintPure, meta = (DisplayName = "NotEqual (LensDistortionCameraModel)", CompactNodeTitle = "!=", Keywords = "!= not equal"), Category = "Foo | Lens Distortion")
			static bool NotEqual_CompareLensDistortionModels(
				const FFooCameraModel& A,
				const FFooCameraModel& B)
			{
				return A != B;
			}
		};

#pragma once

#include "CoreMinimal.h"
		#include "UObject/ObjectMacros.h"
		#include "Classes/Kismet/BlueprintFunctionLibrary.h"
		#include "LensDistortionAPI.h"
		#include "LensDistortionBlueprintLibrary.generated.h"

UCLASS(MinimalAPI)
		class ULensDistortionBlueprintLibrary : public UBlueprintFunctionLibrary
		{
			GENERATED_UCLASS_BODY()

/** 返回不变形渲染所需的过扫描因子，避免出现未渲染的变形像素。*/
			UFUNCTION(BlueprintPure, Category = "Foo | Lens Distortion")
			static void GetUndistortOverscanFactor(
				const FFooCameraModel& CameraModel,
				float DistortedHorizontalFOV,
				float DistortedAspectRatio,
				float& UndistortOverscanFactor);

/** 在输出渲染目标中绘制UV置换贴图。
			* - 红色和绿色通道负责变形置换；
			* - 蓝色和透明通道负责不变形置换。
			* @param DistortedHorizontalFOV 变形渲染中理想的水平视野。
			* @param DistortedAspectRatio 变形渲染中理想的高宽比。
			* @param UndistortOverscanFactor 未变形渲染的过扫描因子。
			* @param OutputRenderTarget 进行绘制的渲染目标。不必拥有和变形渲染相同的分辨率或高宽比。
			* @param OutputMultiply 应用在置换上的乘法因子。
			* @param OutputAdd 保存到输出渲染目标中之前被添加到相乘置换的值。
			*/
			UFUNCTION(BlueprintCallable, Category = "Foo | Lens Distortion", meta = (WorldContext = "WorldContextObject"))
			static void DrawUVDisplacementToRenderTarget(
				const UObject* WorldContextObject,
				const FFooCameraModel& CameraModel,
				float DistortedHorizontalFOV,
				float DistortedAspectRatio,
				float UndistortOverscanFactor,
				class UTextureRenderTarget2D* OutputRenderTarget,
				float OutputMultiply = 0.5,
				float OutputAdd = 0.5
				);

/* 如果A等于B（A == B）则返回true */
			UFUNCTION(BlueprintPure, meta=(DisplayName = "Equal (LensDistortionCameraModel)", CompactNodeTitle = "==", Keywords = "== equal"), Category = "Foo | Lens Distortion")
			static bool EqualEqual_CompareLensDistortionModels(
				const FFooCameraModel& A,
				const FFooCameraModel& B)
			{
				return A == B;
			}

/* 如A不等于B（A != B），则返回true */
			UFUNCTION(BlueprintPure, meta = (DisplayName = "NotEqual (LensDistortionCameraModel)", CompactNodeTitle = "!=", Keywords = "!= not equal"), Category = "Foo | Lens Distortion")
			static bool NotEqual_CompareLensDistortionModels(
				const FFooCameraModel& A,
				const FFooCameraModel& B)
			{
				return A != B;
			}
		};

现在前往 Private 文件夹打开 LensDistortionBlueprintLibrary.cpp 进行以下替换：
- FLensDistortionCameraModel 替换为 FFooCameraModel
- ULensDistortionBlueprintLibrary 替换为 UFooBlueprintLibrary

应用FFooCameraModel替换FLensDistortionCameraModel 两次，用UFooBlueprintLibrary替换ULensDistortionBlueprintLibrary 四次。

			// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.

			#include "LensDistortionBlueprintLibrary.h"

			ULensDistortionBlueprintLibrary::ULensDistortionBlueprintLibrary(const FObjectInitializer& ObjectInitializer)
				:Super(ObjectInitializer)
			{ }

			// 静态
			void ULensDistortionBlueprintLibrary::GetUndistortOverscanFactor(
				const FFooCameraModel& CameraModel,
				float DistortedHorizontalFOV,
				float DistortedAspectRatio,
				float& UndistortOverscanFactor)
			{
				UndistortOverscanFactor = CameraModel.GetUndistortOverscanFactor(DistortedHorizontalFOV, DistortedAspectRatio);
			}

			// 静态
			void ULensDistortionBlueprintLibrary::DrawUVDisplacementToRenderTarget(
				const UObject* WorldContextObject,
				const FFooCameraModel& CameraModel,
				float DistortedHorizontalFOV,
				float DistortedAspectRatio,
				float UndistortOverscanFactor,
				class UTextureRenderTarget2D* OutputRenderTarget,
				float OutputMultiply,
				float OutputAdd)
			{
				CameraModel.DrawUVDisplacementToRenderTarget(
					WorldContextObject->GetWorld(),
					DistortedHorizontalFOV, DistortedAspectRatio,
					UndistortOverscanFactor, OutputRenderTarget,
					OutputMultiply, OutputAdd);
			}

#include "LensDistortionBlueprintLibrary.h"

ULensDistortionBlueprintLibrary::ULensDistortionBlueprintLibrary(const FObjectInitializer& ObjectInitializer)
				:Super(ObjectInitializer)
			{ }

// 静态
			void ULensDistortionBlueprintLibrary::GetUndistortOverscanFactor(
				const FFooCameraModel& CameraModel,
				float DistortedHorizontalFOV,
				float DistortedAspectRatio,
				float& UndistortOverscanFactor)
			{
				UndistortOverscanFactor = CameraModel.GetUndistortOverscanFactor(DistortedHorizontalFOV, DistortedAspectRatio);
			}

// 静态
			void ULensDistortionBlueprintLibrary::DrawUVDisplacementToRenderTarget(
				const UObject* WorldContextObject,
				const FFooCameraModel& CameraModel,
				float DistortedHorizontalFOV,
				float DistortedAspectRatio,
				float UndistortOverscanFactor,
				class UTextureRenderTarget2D* OutputRenderTarget,
				float OutputMultiply,
				float OutputAdd)
			{
				CameraModel.DrawUVDisplacementToRenderTarget(
					WorldContextObject->GetWorld(),
					DistortedHorizontalFOV, DistortedAspectRatio,
					UndistortOverscanFactor, OutputRenderTarget,
					OutputMultiply, OutputAdd);
			}

接下来，在 Private 文件夹中打开 LensDistortionRendering.cpp 文件，将 FLensDistortionCameraModel 替换为 FFooCameraModel

需要在此文件中用FFooCameraModel替换FLensDistortionCameraModel 六次。

			// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.

			#include "LensDistortionAPI.h"
			#include "Classes/Engine/TextureRenderTarget2D.h"
			#include "Classes/Engine/World.h"
			#include "Public/GlobalShader.h"
			#include "Public/PipelineStateCache.h"
			#include "Public/RHIStaticStates.h"
			#include "Public/SceneUtils.h"
			#include "Public/SceneInterface.h"
			#include "Public/ShaderParameterUtils.h"

			static const uint32 kGridSubdivisionX = 32;
			static const uint32 kGridSubdivisionY = 16;

			/**
			* 派生自 FFooCameraModel 的中间结构体，
			* 由游戏线程交付给渲染线程。
			*/
			struct FCompiledCameraModel
			{
				/** 生成此编译模型的原始相机模型。*/
				FFooCameraModel OriginalCameraModel;

				/** 未变形和变形渲染光学变形的相机矩阵。
				* XY保存缩放因子，ZW保存平移。
				*/
				FVector4 DistortedCameraMatrix;
				FVector4 UndistortedCameraMatrix;

				/** 对渲染目标输出通道的乘法和加法。*/
				FVector2D OutputMultiplyAndAdd;
			};

			/** 不对源自左上角的视口UV进行变形，将其放入视图空间（x', y', z'=1.f）*/
			static FVector2D LensUndistortViewportUVIntoViewSpace(
				const FFooCameraModel& CameraModel,
				float TanHalfDistortedHorizontalFOV, float DistortedAspectRatio,
				FVector2D DistortedViewportUV)
			{
				FVector2D AspectRatioAwareF = CameraModel.F * FVector2D(1, -DistortedAspectRatio);
				return CameraModel.UndistortNormalizedViewPosition((DistortedViewportUV - CameraModel.C) / AspectRatioAwareF);
			}

			class FLensDistortionUVGenerationShader : public FGlobalShader
			{
			public:
				static bool ShouldCache(EShaderPlatform Platform)
				{
					return IsFeatureLevelSupported(Platform, ERHIFeatureLevel::SM4);
				}

				static void ModifyCompilationEnvironment(EShaderPlatform Platform, FShaderCompilerEnvironment& OutEnvironment)
				{
					FGlobalShader::ModifyCompilationEnvironment(Platform, OutEnvironment);
					OutEnvironment.SetDefine(TEXT("GRID_SUBDIVISION_X"), kGridSubdivisionX);
					OutEnvironment.SetDefine(TEXT("GRID_SUBDIVISION_Y"), kGridSubdivisionY);
				}

				FLensDistortionUVGenerationShader() {}

				FLensDistortionUVGenerationShader(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
					:FGlobalShader(Initializer)
				{
					PixelUVSize.Bind(Initializer.ParameterMap, TEXT("PixelUVSize"));
					RadialDistortionCoefs.Bind(Initializer.ParameterMap, TEXT("RadialDistortionCoefs"));
					TangentialDistortionCoefs.Bind(Initializer.ParameterMap, TEXT("TangentialDistortionCoefs"));
					DistortedCameraMatrix.Bind(Initializer.ParameterMap, TEXT("DistortedCameraMatrix"));
					UndistortedCameraMatrix.Bind(Initializer.ParameterMap, TEXT("UndistortedCameraMatrix"));
					OutputMultiplyAndAdd.Bind(Initializer.ParameterMap, TEXT("OutputMultiplyAndAdd"));
				}

				template<typename TShaderRHIParamRef>
				void SetParameters(
					FRHICommandListImmediate& RHICmdList,
					const TShaderRHIParamRef ShaderRHI,
					const FCompiledCameraModel& CompiledCameraModel,
					const FIntPoint& DisplacementMapResolution)
				{
					FVector2D PixelUVSizeValue(
						1.f / float(DisplacementMapResolution.X), 1.f / float(DisplacementMapResolution.Y));
					FVector RadialDistortionCoefsValue(
						CompiledCameraModel.OriginalCameraModel.K1,
						CompiledCameraModel.OriginalCameraModel.K2,
						CompiledCameraModel.OriginalCameraModel.K3);
					FVector2D TangentialDistortionCoefsValue(
						CompiledCameraModel.OriginalCameraModel.P1,
						CompiledCameraModel.OriginalCameraModel.P2);

					SetShaderValue(RHICmdList, ShaderRHI, PixelUVSize, PixelUVSizeValue);
					SetShaderValue(RHICmdList, ShaderRHI, DistortedCameraMatrix, CompiledCameraModel.DistortedCameraMatrix);
					SetShaderValue(RHICmdList, ShaderRHI, UndistortedCameraMatrix, CompiledCameraModel.UndistortedCameraMatrix);
					SetShaderValue(RHICmdList, ShaderRHI, RadialDistortionCoefs, RadialDistortionCoefsValue);
					SetShaderValue(RHICmdList, ShaderRHI, TangentialDistortionCoefs, TangentialDistortionCoefsValue);
					SetShaderValue(RHICmdList, ShaderRHI, OutputMultiplyAndAdd, CompiledCameraModel.OutputMultiplyAndAdd);
				}

				virtual bool Serialize(FArchive& Ar) override
				{
					bool bShaderHasOutdatedParameters = FGlobalShader::Serialize(Ar);
					Ar << PixelUVSize << RadialDistortionCoefs << TangentialDistortionCoefs << DistortedCameraMatrix << UndistortedCameraMatrix << OutputMultiplyAndAdd;
					return bShaderHasOutdatedParameters;
				}

			private:
				FShaderParameter PixelUVSize;
				FShaderParameter RadialDistortionCoefs;
				FShaderParameter TangentialDistortionCoefs;
				FShaderParameter DistortedCameraMatrix;
				FShaderParameter UndistortedCameraMatrix;
				FShaderParameter OutputMultiplyAndAdd;

			};

			class FLensDistortionUVGenerationVS : public FLensDistortionUVGenerationShader
			{
				DECLARE_SHADER_TYPE(FLensDistortionUVGenerationVS, Global);

			public:

				/** 默认构造函数。*/
				FLensDistortionUVGenerationVS() {}

				/** 初始化构造函数。*/
				FLensDistortionUVGenerationVS(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
					:FLensDistortionUVGenerationShader(Initializer)
				{
				}
			};

			class FLensDistortionUVGenerationPS : public FLensDistortionUVGenerationShader
			{
				DECLARE_SHADER_TYPE(FLensDistortionUVGenerationPS, Global);

			public:

				/** 默认构造函数。*/
				FLensDistortionUVGenerationPS() {}

				/** 初始化构造函数。*/
				FLensDistortionUVGenerationPS(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
					:FLensDistortionUVGenerationShader(Initializer)
				{ }
			};

			IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationVS, TEXT("/Plugin/Foo/Private/MyShader.usf"), TEXT("MainVS"), SF_Vertex)
			IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationPS, TEXT("/Plugin/Foo/Private/MyShader.usf"), TEXT("MainPS"), SF_Pixel)

			static void DrawUVDisplacementToRenderTarget_RenderThread(
				FRHICommandListImmediate& RHICmdList,
				const FCompiledCameraModel& CompiledCameraModel,
				const FName& TextureRenderTargetName,
				FTextureRenderTargetResource* OutTextureRenderTargetResource,
				ERHIFeatureLevel::Type FeatureLevel)
			{
				check(IsInRenderingThread());

			#if WANTS_DRAW_MESH_EVENTS
				FString EventName;
				TextureRenderTargetName.ToString(EventName);
				SCOPED_DRAW_EVENTF(RHICmdList, SceneCapture, TEXT("LensDistortionDisplacementGeneration %s"), *EventName);
			#else
				SCOPED_DRAW_EVENT(RHICmdList, DrawUVDisplacementToRenderTarget_RenderThread);
			#endif

				// 设置渲染目标
				SetRenderTarget(
					RHICmdList,
					OutTextureRenderTargetResource->GetRenderTargetTexture(),
					FTextureRHIRef(),
					ESimpleRenderTargetMode::EUninitializedColorAndDepth,
					FExclusiveDepthStencil::DepthNop_StencilNop);

				FIntPoint DisplacementMapResolution(OutTextureRenderTargetResource->GetSizeX(), OutTextureRenderTargetResource->GetSizeY());

				// 更新视口。
				RHICmdList.SetViewport(
					0, 0, 0.f,
					DisplacementMapResolution.X, DisplacementMapResolution.Y, 1.f);

				// 获取着色器。
				TShaderMap<FGlobalShaderType>* GlobalShaderMap = GetGlobalShaderMap(FeatureLevel);
				TShaderMapRef< FLensDistortionUVGenerationVS > VertexShader(GlobalShaderMap);
				TShaderMapRef< FLensDistortionUVGenerationPS > PixelShader(GlobalShaderMap);

				// 设置图像管线状态。
				FGraphicsPipelineStateInitializer GraphicsPSOInit;
				RHICmdList.ApplyCachedRenderTargets(GraphicsPSOInit);
				GraphicsPSOInit.DepthStencilState = TStaticDepthStencilState<false, CF_Always>::GetRHI();
				GraphicsPSOInit.BlendState = TStaticBlendState<>::GetRHI();
				GraphicsPSOInit.RasterizerState = TStaticRasterizerState<>::GetRHI();
				GraphicsPSOInit.PrimitiveType = PT_TriangleList;
				GraphicsPSOInit.BoundShaderState.VertexDeclarationRHI = GetVertexDeclarationFVector4();
				GraphicsPSOInit.BoundShaderState.VertexShaderRHI = GETSAFERHISHADER_VERTEX(*VertexShader);
				GraphicsPSOInit.BoundShaderState.PixelShaderRHI = GETSAFERHISHADER_PIXEL(*PixelShader);
				SetGraphicsPipelineState(RHICmdList, GraphicsPSOInit);

				// 更新视口。
				RHICmdList.SetViewport(
					0, 0, 0.f,
					OutTextureRenderTargetResource->GetSizeX(), OutTextureRenderTargetResource->GetSizeY(), 1.f);

				// 更新着色器的统一参数。
				VertexShader->SetParameters(RHICmdList, VertexShader->GetVertexShader(), CompiledCameraModel, DisplacementMapResolution);
				PixelShader->SetParameters(RHICmdList, PixelShader->GetPixelShader(), CompiledCameraModel, DisplacementMapResolution);

				// 绘制网格。
				uint32 PrimitiveCount = kGridSubdivisionX * kGridSubdivisionY * 2;
				RHICmdList.DrawPrimitive(PT_TriangleList, 0, PrimitiveCount, 1);

				// 解析渲染目标。
				RHICmdList.CopyToResolveTarget(
					OutTextureRenderTargetResource->GetRenderTargetTexture(),
					OutTextureRenderTargetResource->TextureRHI,
					false, FResolveParams());
			}

			FVector2D FFooCameraModel::UndistortNormalizedViewPosition(FVector2D EngineV) const
			{
				// 引擎视图空间 -> 标准视图空间。
				FVector2D V = FVector2D(1, -1) * EngineV;

				FVector2D V2 = V * V;
				float R2 = V2.X + V2.Y;

				// 径向变形（额外添加括号是为匹配 MF_Undistortion.uasset）。
				FVector2D UndistortedV = V * (1.0 + (R2 * K1 + (R2 * R2) * K2 + (R2 * R2 * R2) * K3));

				// 切向变形。
				UndistortedV.X += P2 * (R2 + 2 * V2.X) + 2 * P1 * V.X * V.Y;
				UndistortedV.Y += P1 * (R2 + 2 * V2.Y) + 2 * P2 * V.X * V.Y;

				// 返回引擎V。
				return UndistortedV * FVector2D(1, -1);
			}

			/** 编译相机模型。*/
			float FFooCameraModel::GetUndistortOverscanFactor(
				float DistortedHorizontalFOV, float DistortedAspectRatio) const
			{
				// 如光学变形模型为同一，则会及早返回1。
				if (*this == FFooCameraModel())
				{
					return 1.0f;
				}

				float TanHalfDistortedHorizontalFOV = FMath::Tan(DistortedHorizontalFOV * 0.5f);

				// 获取变形视口UV坐标系统中不同关键点在z'=1处视图空间中所处的位置。
				// 这非常近似于知晓未变形视口所需的过扫描缩放因子，但在实际操作中效果极佳。
				//
				// 视图空间中未变形UV位置：
				// ^ 视图空间的Y轴
				// |
				// 0 1 2
				//
				// 7 0 3 --> 视图空间的X轴
				//
				// 6 5 4
				FVector2D UndistortCornerPos0 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(0.0f, 0.0f));
				FVector2D UndistortCornerPos1 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(0.5f, 0.0f));
				FVector2D UndistortCornerPos2 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(1.0f, 0.0f));
				FVector2D UndistortCornerPos3 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(1.0f, 0.5f));
				FVector2D UndistortCornerPos4 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(1.0f, 1.0f));
				FVector2D UndistortCornerPos5 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(0.5f, 1.0f));
				FVector2D UndistortCornerPos6 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(0.0f, 1.0f));
				FVector2D UndistortCornerPos7 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(0.0f, 0.5f));

				// 寻找z'=1处视图空间中未变形视口的内方最大与最小值。
				FVector2D MinInnerViewportRect;
				FVector2D MaxInnerViewportRect;
				MinInnerViewportRect.X = FMath::Max3(UndistortCornerPos0.X, UndistortCornerPos6.X, UndistortCornerPos7.X);
				MinInnerViewportRect.Y = FMath::Max3(UndistortCornerPos4.Y, UndistortCornerPos5.Y, UndistortCornerPos6.Y);
				MaxInnerViewportRect.X = FMath::Min3(UndistortCornerPos2.X, UndistortCornerPos3.X, UndistortCornerPos4.X);
				MaxInnerViewportRect.Y = FMath::Min3(UndistortCornerPos0.Y, UndistortCornerPos1.Y, UndistortCornerPos2.Y);

				check(MinInnerViewportRect.X < 0.f);
				check(MinInnerViewportRect.Y < 0.f);
				check(MaxInnerViewportRect.X > 0.f);
				check(MaxInnerViewportRect.Y > 0.f);

				// 计算正切（VerticalFOV * 0.5）
				float TanHalfDistortedVerticalFOV = TanHalfDistortedHorizontalFOV / DistortedAspectRatio;

				// 计算各轴上所需的未变形视口比例。
				FVector2D ViewportScaleUpFactorPerViewAxis = 0.5 * FVector2D(
					TanHalfDistortedHorizontalFOV / FMath::Max(-MinInnerViewportRect.X, MaxInnerViewportRect.X),
					TanHalfDistortedVerticalFOV / FMath::Max(-MinInnerViewportRect.Y, MaxInnerViewportRect.Y));

				// 将视图空间中未变形视口尺寸调大2%，
				// 即可解决奇数未变形位置在切向
				// 桶状光学变形中并不为最小的问题。
				const float ViewportScaleUpConstMultiplier = 1.02f;
				return FMath::Max(ViewportScaleUpFactorPerViewAxis.X, ViewportScaleUpFactorPerViewAxis.Y) * ViewportScaleUpConstMultiplier;
			}

			void FFooCameraModel::DrawUVDisplacementToRenderTarget(
				UWorld* World,
				float DistortedHorizontalFOV,
				float DistortedAspectRatio,
				float UndistortOverscanFactor,
				UTextureRenderTarget2D* OutputRenderTarget,
				float OutputMultiply,
				float OutputAdd) const
			{
				check(IsInGameThread());

				// 编译相机模型，以了解过扫描比例因子。
				float TanHalfUndistortedHorizontalFOV = FMath::Tan(DistortedHorizontalFOV * 0.5f) * UndistortOverscanFactor;
				float TanHalfUndistortedVerticalFOV = TanHalfUndistortedHorizontalFOV / DistortedAspectRatio;

				// 输出。
				FCompiledCameraModel CompiledCameraModel;
				CompiledCameraModel.OriginalCameraModel = *this;

				CompiledCameraModel.DistortedCameraMatrix.X = 1.0f / TanHalfUndistortedHorizontalFOV;
				CompiledCameraModel.DistortedCameraMatrix.Y = 1.0f / TanHalfUndistortedVerticalFOV;
				CompiledCameraModel.DistortedCameraMatrix.Z = 0.5f;
				CompiledCameraModel.DistortedCameraMatrix.W = 0.5f;

				CompiledCameraModel.UndistortedCameraMatrix.X = F.X;
				CompiledCameraModel.UndistortedCameraMatrix.Y = F.Y * DistortedAspectRatio;
				CompiledCameraModel.UndistortedCameraMatrix.Z = C.X;
				CompiledCameraModel.UndistortedCameraMatrix.W = C.Y;

				CompiledCameraModel.OutputMultiplyAndAdd.X = OutputMultiply;
				CompiledCameraModel.OutputMultiplyAndAdd.Y = OutputAdd;

				const FName TextureRenderTargetName = OutputRenderTarget->GetFName();
				FTextureRenderTargetResource* TextureRenderTargetResource = OutputRenderTarget->GameThread_GetRenderTargetResource();

				ERHIFeatureLevel::Type FeatureLevel = World->Scene->GetFeatureLevel();

				ENQUEUE_RENDER_COMMAND(CaptureCommand)(
					[CompiledCameraModel, TextureRenderTargetResource, TextureRenderTargetName, FeatureLevel](FRHICommandListImmediate& RHICmdList)
					{
						DrawUVDisplacementToRenderTarget_RenderThread(
							RHICmdList,
							CompiledCameraModel,
							TextureRenderTargetName,
							TextureRenderTargetResource,
							FeatureLevel);
					}
				);
			}

#include "LensDistortionAPI.h"
			#include "Classes/Engine/TextureRenderTarget2D.h"
			#include "Classes/Engine/World.h"
			#include "Public/GlobalShader.h"
			#include "Public/PipelineStateCache.h"
			#include "Public/RHIStaticStates.h"
			#include "Public/SceneUtils.h"
			#include "Public/SceneInterface.h"
			#include "Public/ShaderParameterUtils.h"

static const uint32 kGridSubdivisionX = 32;
			static const uint32 kGridSubdivisionY = 16;

/**
			* 派生自 FFooCameraModel 的中间结构体，
			* 由游戏线程交付给渲染线程。
			*/
			struct FCompiledCameraModel
			{
				/** 生成此编译模型的原始相机模型。*/
				FFooCameraModel OriginalCameraModel;

/** 未变形和变形渲染光学变形的相机矩阵。
				* XY保存缩放因子，ZW保存平移。
				*/
				FVector4 DistortedCameraMatrix;
				FVector4 UndistortedCameraMatrix;

/** 对渲染目标输出通道的乘法和加法。*/
				FVector2D OutputMultiplyAndAdd;
			};

/** 不对源自左上角的视口UV进行变形，将其放入视图空间（x', y', z'=1.f）*/
			static FVector2D LensUndistortViewportUVIntoViewSpace(
				const FFooCameraModel& CameraModel,
				float TanHalfDistortedHorizontalFOV, float DistortedAspectRatio,
				FVector2D DistortedViewportUV)
			{
				FVector2D AspectRatioAwareF = CameraModel.F * FVector2D(1, -DistortedAspectRatio);
				return CameraModel.UndistortNormalizedViewPosition((DistortedViewportUV - CameraModel.C) / AspectRatioAwareF);
			}

class FLensDistortionUVGenerationShader : public FGlobalShader
			{
			public:
				static bool ShouldCache(EShaderPlatform Platform)
				{
					return IsFeatureLevelSupported(Platform, ERHIFeatureLevel::SM4);
				}

static void ModifyCompilationEnvironment(EShaderPlatform Platform, FShaderCompilerEnvironment& OutEnvironment)
				{
					FGlobalShader::ModifyCompilationEnvironment(Platform, OutEnvironment);
					OutEnvironment.SetDefine(TEXT("GRID_SUBDIVISION_X"), kGridSubdivisionX);
					OutEnvironment.SetDefine(TEXT("GRID_SUBDIVISION_Y"), kGridSubdivisionY);
				}

FLensDistortionUVGenerationShader() {}

FLensDistortionUVGenerationShader(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
					:FGlobalShader(Initializer)
				{
					PixelUVSize.Bind(Initializer.ParameterMap, TEXT("PixelUVSize"));
					RadialDistortionCoefs.Bind(Initializer.ParameterMap, TEXT("RadialDistortionCoefs"));
					TangentialDistortionCoefs.Bind(Initializer.ParameterMap, TEXT("TangentialDistortionCoefs"));
					DistortedCameraMatrix.Bind(Initializer.ParameterMap, TEXT("DistortedCameraMatrix"));
					UndistortedCameraMatrix.Bind(Initializer.ParameterMap, TEXT("UndistortedCameraMatrix"));
					OutputMultiplyAndAdd.Bind(Initializer.ParameterMap, TEXT("OutputMultiplyAndAdd"));
				}

template<typename TShaderRHIParamRef>
				void SetParameters(
					FRHICommandListImmediate& RHICmdList,
					const TShaderRHIParamRef ShaderRHI,
					const FCompiledCameraModel& CompiledCameraModel,
					const FIntPoint& DisplacementMapResolution)
				{
					FVector2D PixelUVSizeValue(
						1.f / float(DisplacementMapResolution.X), 1.f / float(DisplacementMapResolution.Y));
					FVector RadialDistortionCoefsValue(
						CompiledCameraModel.OriginalCameraModel.K1,
						CompiledCameraModel.OriginalCameraModel.K2,
						CompiledCameraModel.OriginalCameraModel.K3);
					FVector2D TangentialDistortionCoefsValue(
						CompiledCameraModel.OriginalCameraModel.P1,
						CompiledCameraModel.OriginalCameraModel.P2);

SetShaderValue(RHICmdList, ShaderRHI, PixelUVSize, PixelUVSizeValue);
					SetShaderValue(RHICmdList, ShaderRHI, DistortedCameraMatrix, CompiledCameraModel.DistortedCameraMatrix);
					SetShaderValue(RHICmdList, ShaderRHI, UndistortedCameraMatrix, CompiledCameraModel.UndistortedCameraMatrix);
					SetShaderValue(RHICmdList, ShaderRHI, RadialDistortionCoefs, RadialDistortionCoefsValue);
					SetShaderValue(RHICmdList, ShaderRHI, TangentialDistortionCoefs, TangentialDistortionCoefsValue);
					SetShaderValue(RHICmdList, ShaderRHI, OutputMultiplyAndAdd, CompiledCameraModel.OutputMultiplyAndAdd);
				}

virtual bool Serialize(FArchive& Ar) override
				{
					bool bShaderHasOutdatedParameters = FGlobalShader::Serialize(Ar);
					Ar << PixelUVSize << RadialDistortionCoefs << TangentialDistortionCoefs << DistortedCameraMatrix << UndistortedCameraMatrix << OutputMultiplyAndAdd;
					return bShaderHasOutdatedParameters;
				}

private:
				FShaderParameter PixelUVSize;
				FShaderParameter RadialDistortionCoefs;
				FShaderParameter TangentialDistortionCoefs;
				FShaderParameter DistortedCameraMatrix;
				FShaderParameter UndistortedCameraMatrix;
				FShaderParameter OutputMultiplyAndAdd;

};

class FLensDistortionUVGenerationVS : public FLensDistortionUVGenerationShader
			{
				DECLARE_SHADER_TYPE(FLensDistortionUVGenerationVS, Global);

public:

/** 默认构造函数。*/
				FLensDistortionUVGenerationVS() {}

/** 初始化构造函数。*/
				FLensDistortionUVGenerationVS(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
					:FLensDistortionUVGenerationShader(Initializer)
				{
				}
			};

class FLensDistortionUVGenerationPS : public FLensDistortionUVGenerationShader
			{
				DECLARE_SHADER_TYPE(FLensDistortionUVGenerationPS, Global);

public:

/** 默认构造函数。*/
				FLensDistortionUVGenerationPS() {}

/** 初始化构造函数。*/
				FLensDistortionUVGenerationPS(const ShaderMetaType::CompiledShaderInitializerType& Initializer)
					:FLensDistortionUVGenerationShader(Initializer)
				{ }
			};

IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationVS, TEXT("/Plugin/Foo/Private/MyShader.usf"), TEXT("MainVS"), SF_Vertex)
			IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationPS, TEXT("/Plugin/Foo/Private/MyShader.usf"), TEXT("MainPS"), SF_Pixel)

static void DrawUVDisplacementToRenderTarget_RenderThread(
				FRHICommandListImmediate& RHICmdList,
				const FCompiledCameraModel& CompiledCameraModel,
				const FName& TextureRenderTargetName,
				FTextureRenderTargetResource* OutTextureRenderTargetResource,
				ERHIFeatureLevel::Type FeatureLevel)
			{
				check(IsInRenderingThread());

#if WANTS_DRAW_MESH_EVENTS
				FString EventName;
				TextureRenderTargetName.ToString(EventName);
				SCOPED_DRAW_EVENTF(RHICmdList, SceneCapture, TEXT("LensDistortionDisplacementGeneration %s"), *EventName);
			#else
				SCOPED_DRAW_EVENT(RHICmdList, DrawUVDisplacementToRenderTarget_RenderThread);
			#endif

// 设置渲染目标
				SetRenderTarget(
					RHICmdList,
					OutTextureRenderTargetResource->GetRenderTargetTexture(),
					FTextureRHIRef(),
					ESimpleRenderTargetMode::EUninitializedColorAndDepth,
					FExclusiveDepthStencil::DepthNop_StencilNop);

FIntPoint DisplacementMapResolution(OutTextureRenderTargetResource->GetSizeX(), OutTextureRenderTargetResource->GetSizeY());

// 更新视口。
				RHICmdList.SetViewport(
					0, 0, 0.f,
					DisplacementMapResolution.X, DisplacementMapResolution.Y, 1.f);

// 获取着色器。
				TShaderMap<FGlobalShaderType>* GlobalShaderMap = GetGlobalShaderMap(FeatureLevel);
				TShaderMapRef< FLensDistortionUVGenerationVS > VertexShader(GlobalShaderMap);
				TShaderMapRef< FLensDistortionUVGenerationPS > PixelShader(GlobalShaderMap);

// 设置图像管线状态。
				FGraphicsPipelineStateInitializer GraphicsPSOInit;
				RHICmdList.ApplyCachedRenderTargets(GraphicsPSOInit);
				GraphicsPSOInit.DepthStencilState = TStaticDepthStencilState<false, CF_Always>::GetRHI();
				GraphicsPSOInit.BlendState = TStaticBlendState<>::GetRHI();
				GraphicsPSOInit.RasterizerState = TStaticRasterizerState<>::GetRHI();
				GraphicsPSOInit.PrimitiveType = PT_TriangleList;
				GraphicsPSOInit.BoundShaderState.VertexDeclarationRHI = GetVertexDeclarationFVector4();
				GraphicsPSOInit.BoundShaderState.VertexShaderRHI = GETSAFERHISHADER_VERTEX(*VertexShader);
				GraphicsPSOInit.BoundShaderState.PixelShaderRHI = GETSAFERHISHADER_PIXEL(*PixelShader);
				SetGraphicsPipelineState(RHICmdList, GraphicsPSOInit);

// 更新视口。
				RHICmdList.SetViewport(
					0, 0, 0.f,
					OutTextureRenderTargetResource->GetSizeX(), OutTextureRenderTargetResource->GetSizeY(), 1.f);

// 更新着色器的统一参数。
				VertexShader->SetParameters(RHICmdList, VertexShader->GetVertexShader(), CompiledCameraModel, DisplacementMapResolution);
				PixelShader->SetParameters(RHICmdList, PixelShader->GetPixelShader(), CompiledCameraModel, DisplacementMapResolution);

// 绘制网格。
				uint32 PrimitiveCount = kGridSubdivisionX * kGridSubdivisionY * 2;
				RHICmdList.DrawPrimitive(PT_TriangleList, 0, PrimitiveCount, 1);

// 解析渲染目标。
				RHICmdList.CopyToResolveTarget(
					OutTextureRenderTargetResource->GetRenderTargetTexture(),
					OutTextureRenderTargetResource->TextureRHI,
					false, FResolveParams());
			}

FVector2D FFooCameraModel::UndistortNormalizedViewPosition(FVector2D EngineV) const
			{
				// 引擎视图空间 -> 标准视图空间。
				FVector2D V = FVector2D(1, -1) * EngineV;

FVector2D V2 = V * V;
				float R2 = V2.X + V2.Y;

// 径向变形（额外添加括号是为匹配 MF_Undistortion.uasset）。
				FVector2D UndistortedV = V * (1.0 + (R2 * K1 + (R2 * R2) * K2 + (R2 * R2 * R2) * K3));

// 切向变形。
				UndistortedV.X += P2 * (R2 + 2 * V2.X) + 2 * P1 * V.X * V.Y;
				UndistortedV.Y += P1 * (R2 + 2 * V2.Y) + 2 * P2 * V.X * V.Y;

// 返回引擎V。
				return UndistortedV * FVector2D(1, -1);
			}

/** 编译相机模型。*/
			float FFooCameraModel::GetUndistortOverscanFactor(
				float DistortedHorizontalFOV, float DistortedAspectRatio) const
			{
				// 如光学变形模型为同一，则会及早返回1。
				if (*this == FFooCameraModel())
				{
					return 1.0f;
				}

float TanHalfDistortedHorizontalFOV = FMath::Tan(DistortedHorizontalFOV * 0.5f);

// 获取变形视口UV坐标系统中不同关键点在z'=1处视图空间中所处的位置。
				// 这非常近似于知晓未变形视口所需的过扫描缩放因子，但在实际操作中效果极佳。
				//
				// 视图空间中未变形UV位置：
				// ^ 视图空间的Y轴
				// |
				// 0 1 2
				//
				// 7 0 3 --> 视图空间的X轴
				//
				// 6 5 4
				FVector2D UndistortCornerPos0 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(0.0f, 0.0f));
				FVector2D UndistortCornerPos1 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(0.5f, 0.0f));
				FVector2D UndistortCornerPos2 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(1.0f, 0.0f));
				FVector2D UndistortCornerPos3 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(1.0f, 0.5f));
				FVector2D UndistortCornerPos4 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(1.0f, 1.0f));
				FVector2D UndistortCornerPos5 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(0.5f, 1.0f));
				FVector2D UndistortCornerPos6 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(0.0f, 1.0f));
				FVector2D UndistortCornerPos7 = LensUndistortViewportUVIntoViewSpace(
					*this, TanHalfDistortedHorizontalFOV, DistortedAspectRatio, FVector2D(0.0f, 0.5f));

// 寻找z'=1处视图空间中未变形视口的内方最大与最小值。
				FVector2D MinInnerViewportRect;
				FVector2D MaxInnerViewportRect;
				MinInnerViewportRect.X = FMath::Max3(UndistortCornerPos0.X, UndistortCornerPos6.X, UndistortCornerPos7.X);
				MinInnerViewportRect.Y = FMath::Max3(UndistortCornerPos4.Y, UndistortCornerPos5.Y, UndistortCornerPos6.Y);
				MaxInnerViewportRect.X = FMath::Min3(UndistortCornerPos2.X, UndistortCornerPos3.X, UndistortCornerPos4.X);
				MaxInnerViewportRect.Y = FMath::Min3(UndistortCornerPos0.Y, UndistortCornerPos1.Y, UndistortCornerPos2.Y);

check(MinInnerViewportRect.X < 0.f);
				check(MinInnerViewportRect.Y < 0.f);
				check(MaxInnerViewportRect.X > 0.f);
				check(MaxInnerViewportRect.Y > 0.f);

// 计算正切（VerticalFOV * 0.5）
				float TanHalfDistortedVerticalFOV = TanHalfDistortedHorizontalFOV / DistortedAspectRatio;

// 计算各轴上所需的未变形视口比例。
				FVector2D ViewportScaleUpFactorPerViewAxis = 0.5 * FVector2D(
					TanHalfDistortedHorizontalFOV / FMath::Max(-MinInnerViewportRect.X, MaxInnerViewportRect.X),
					TanHalfDistortedVerticalFOV / FMath::Max(-MinInnerViewportRect.Y, MaxInnerViewportRect.Y));

// 将视图空间中未变形视口尺寸调大2%，
				// 即可解决奇数未变形位置在切向
				// 桶状光学变形中并不为最小的问题。
				const float ViewportScaleUpConstMultiplier = 1.02f;
				return FMath::Max(ViewportScaleUpFactorPerViewAxis.X, ViewportScaleUpFactorPerViewAxis.Y) * ViewportScaleUpConstMultiplier;
			}

void FFooCameraModel::DrawUVDisplacementToRenderTarget(
				UWorld* World,
				float DistortedHorizontalFOV,
				float DistortedAspectRatio,
				float UndistortOverscanFactor,
				UTextureRenderTarget2D* OutputRenderTarget,
				float OutputMultiply,
				float OutputAdd) const
			{
				check(IsInGameThread());

// 编译相机模型，以了解过扫描比例因子。
				float TanHalfUndistortedHorizontalFOV = FMath::Tan(DistortedHorizontalFOV * 0.5f) * UndistortOverscanFactor;
				float TanHalfUndistortedVerticalFOV = TanHalfUndistortedHorizontalFOV / DistortedAspectRatio;

// 输出。
				FCompiledCameraModel CompiledCameraModel;
				CompiledCameraModel.OriginalCameraModel = *this;

CompiledCameraModel.DistortedCameraMatrix.X = 1.0f / TanHalfUndistortedHorizontalFOV;
				CompiledCameraModel.DistortedCameraMatrix.Y = 1.0f / TanHalfUndistortedVerticalFOV;
				CompiledCameraModel.DistortedCameraMatrix.Z = 0.5f;
				CompiledCameraModel.DistortedCameraMatrix.W = 0.5f;

CompiledCameraModel.UndistortedCameraMatrix.X = F.X;
				CompiledCameraModel.UndistortedCameraMatrix.Y = F.Y * DistortedAspectRatio;
				CompiledCameraModel.UndistortedCameraMatrix.Z = C.X;
				CompiledCameraModel.UndistortedCameraMatrix.W = C.Y;

CompiledCameraModel.OutputMultiplyAndAdd.X = OutputMultiply;
				CompiledCameraModel.OutputMultiplyAndAdd.Y = OutputAdd;

const FName TextureRenderTargetName = OutputRenderTarget->GetFName();
				FTextureRenderTargetResource* TextureRenderTargetResource = OutputRenderTarget->GameThread_GetRenderTargetResource();

ERHIFeatureLevel::Type FeatureLevel = World->Scene->GetFeatureLevel();

ENQUEUE_RENDER_COMMAND(CaptureCommand)(
					[CompiledCameraModel, TextureRenderTargetResource, TextureRenderTargetName, FeatureLevel](FRHICommandListImmediate& RHICmdList)
					{
						DrawUVDisplacementToRenderTarget_RenderThread(
							RHICmdList,
							CompiledCameraModel,
							TextureRenderTargetName,
							TextureRenderTargetResource,
							FeatureLevel);
					}
				);
			}

最后，在 LensDistortionRendering.cpp 文件中第155和156行，将以下两行代码改为指向先前新建的MyShader.USF文件。
```
         修改：
		
         * IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationVS, TEXT("/Plugin/LensDistortion/Private/UVGeneration.usf"), TEXT("MainVS"), SF_Vertex)
		
         为：
		
         * IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationVS, TEXT("/Plugin/Foo/Private/MyShader.usf"), TEXT("MainVS"), SF_Vertex)
		
         修改：
		
         * IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationPS, TEXT("/Plugin/LensDistortion/Private/UVGeneration.usf"), TEXT("MainPS"), SF_Pixel)
		
         为：
		
         * IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationPS, TEXT("/Plugin/Foo/Private/MyShader.usf"), TEXT("MainPS"), SF_Pixel)
```
修改： * IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationVS, TEXT("/Plugin/LensDistortion/Private/UVGeneration.usf"), TEXT("MainVS"), SF_Vertex) 为： * IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationVS, TEXT("/Plugin/Foo/Private/MyShader.usf"), TEXT("MainVS"), SF_Vertex) 修改： * IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationPS, TEXT("/Plugin/LensDistortion/Private/UVGeneration.usf"), TEXT("MainPS"), SF_Pixel) 为： * IMPLEMENT_SHADER_TYPE(, FLensDistortionUVGenerationPS, TEXT("/Plugin/Foo/Private/MyShader.usf"), TEXT("MainPS"), SF_Pixel)
现在前往 Foo/Source 文件夹打开 Foo.Build.cs 文件，在 Foo.Build.cs 中的 PublicDependencyModuleNames.AddRange 部分下添加以下代码行：
```
                 PublicDependencyModuleNames.AddRange(
                 new string[]
                 {
                     "Core",
                     "RenderCore",
                     "ShaderCore",
                     "RHI",
                     // ... 在此处添加静态连接的其他公共依赖性 ...
                 }
                 );
```
PublicDependencyModuleNames.AddRange( new string[] { "Core", "RenderCore", "ShaderCore", "RHI", // ... 在此处添加静态连接的其他公共依赖性 ... } );
然后在 Foo.Build.cs 文件中的 PrivateDependencyModuleNames.AddRange 部分移除 Slate 和 SlateCore。操作完成后Foo.Build.cs应如下：
```
             // Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.
		
             using UnrealBuildTool;
		
             public class Foo :ModuleRules
             {
                 public Foo(ReadOnlyTargetRules Target) : base(Target)
                 {
                     PCHUsage = ModuleRules.PCHUsageMode.UseExplicitOrSharedPCHs;
		
                     PublicIncludePaths.AddRange(
                         new string[] {
                             "Foo/Public"
                             // ... 在此处添加所需的公共包含路径 ...
                         }
                         );
                     PrivateIncludePaths.AddRange(
                         new string[] {
                             "Foo/Private",
                             // ... 在此处添加所需的其他私有包含路径 ...
                         }
                         );
		
                     PublicDependencyModuleNames.AddRange(
                         new string[]
                         {
                             "Core",
                             "RenderCore",
                             "ShaderCore",
                             "RHI",
                             // ... 在此处添加静态连接的其他公共依赖性 ...
                         }
                         );
                     PrivateDependencyModuleNames.AddRange(
                         new string[]
                         {
                             "CoreUObject",
                             "Engine",
                             // ... 在此处添加静态连接的私有依赖性 ...
                         }
                         );
		
                     DynamicallyLoadedModuleNames.AddRange(
                         new string[]
                         {
                             // ... 在此处添加模式动态加载的模式 ...
                         }
                         );
                 }
             }
```
// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved. using UnrealBuildTool; public class Foo :ModuleRules { public Foo(ReadOnlyTargetRules Target) : base(Target) { PCHUsage = ModuleRules.PCHUsageMode.UseExplicitOrSharedPCHs; PublicIncludePaths.AddRange( new string[] { "Foo/Public" // ... 在此处添加所需的公共包含路径 ... } ); PrivateIncludePaths.AddRange( new string[] { "Foo/Private", // ... 在此处添加所需的其他私有包含路径 ... } ); PublicDependencyModuleNames.AddRange( new string[] { "Core", "RenderCore", "ShaderCore", "RHI", // ... 在此处添加静态连接的其他公共依赖性 ... } ); PrivateDependencyModuleNames.AddRange( new string[] { "CoreUObject", "Engine", // ... 在此处添加静态连接的私有依赖性 ... } ); DynamicallyLoadedModuleNames.AddRange( new string[] { // ... 在此处添加模式动态加载的模式 ... } ); } }
重新启动项目的Visual Studio解决方案文件，并按下 CRTL + 5 重新编译项目。编译完成后按下 F5 启动UE4编辑器。
UE4编辑器完成加载后，前往编辑 > 插件以打开插件管理器。
在Plugins管理器中向下滚动寻找 Project 部分，在此部分中找到插件。

如插件未启用，则点击其命名旁边的勾选框将其启用，并重启UE4编辑器。

打开关卡蓝图，在事件图表中点击右键，在搜索框中输入 Foo 即可检查是否所有内容均齐备。完成后，便可看到所有项目均被添加到Foo Camera。

点击查看大图。

最终结果

恭喜，您已成功重建和编译了UE4 Lense Distortion插件的新版本。下一部分将讲述如何从蓝图调用这个新全局着色器，以及其如何对渲染目标进行变形。

2 - 蓝图设置

验证插件正常工作后，以下部分将说明如何使用蓝图调用全局着色器。

如需查看其工作原理，在 内容浏览器 中右键点击并新建 蓝图类，以 Actor 作为父类，命名为 DrawUVDisToRenderTarget。
接下来，新建名为 RT_00 的 渲染目标 和名为 MAT_RT 的材质。
打开MAT_RT材质，然后将RT_00渲染目标添加到材质图表，将其输出连接到主材质节点上的“Base Color”输入，完成后按应用和保存按钮。

点击查看大图。

接下来打开DrawUVDisToRenderTarget蓝图并将以下变量和节点创建/添加到事件图表。

变量	默认值
K1	1.0
K2	1.0
inc	1.0

节点	默认值
W	不适用
S	不适用
Event Tick	N/A
Draw UVDisplacement to Render Target	在视野（FOV）、高宽比（Aspect Ratio）、过扫描因子（Overscan Factor）中输入 1
Make FooCameraModel	N/A
Clear Render Target 2D	N/A

为简单地展示Draw UVDisplacement to Render Target节点如何对提供的渲染目标进行变形，用户需要对蓝图进行设置，使此节点上 K1 和 K2 输入中输入的值能够通过按键进行增加或减少。为完成此操作，需要在事件图表中设置节点，使其与下图相匹配：

BEGIN OBJECT Begin Object Class=/Script/BlueprintGraph.K2Node_CallFunction Name="K2Node_CallFunction_415" FunctionReference=(MemberParent=Class'/Script/Foo.FooBlueprintLibrary',MemberName="DrawUVDisplacementToRenderTarget") NodePosX=-320 NodePosY=320 NodeGuid=6A47664B4ECC988FD0BC3083A247DEE4 CustomProperties Pin (PinId=37A50945406550EE210602B9EDA46A00,PinName="execute",PinToolTip="\n执行",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_CallFunction_416 90ED15F94550FFA4BBC36CA3442B9E34,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=A229BA4C4B3AB1E96CD8FCB7337B7E81,PinName="then",PinToolTip="\n执行",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=074FA9FC4524DDA34DE5FD9182A32C96,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinToolTip="目标\nFoo 蓝图库对象引用",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/Foo.FooBlueprintLibrary',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultObject="/Script/Foo.Default__FooBlueprintLibrary",PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=E7AD9BC443D9AE707AB792B6E1B4C883,PinName="WorldContextObject",PinToolTip="场景内容物体\n对象物体引用",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/CoreUObject.Object',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=F2AB8E6441774533823DD2A413DEF544,PinName="CameraModel",PinToolTip="相机模型\nFoo相机模型结构（按引用）",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/Foo.FooCameraModel',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=True,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_MakeStruct_96 9EB96E474F8D2725864D30B6ECDFF41F,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=True,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=997B44ED47F8AFC32E1E3D8D076096B4,PinName="DistortedHorizontalFOV",PinToolTip="变形水平视野\n浮动\n\n变形渲染中理想的水平视野。",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="1",AutogeneratedDefaultValue="0.0",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=7D39B8B24ECD165F87E3AE8A7B13FA35,PinName="DistortedAspectRatio",PinToolTip="变形高宽比\n浮动\n\n变形渲染中理想的高宽比。",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="1",AutogeneratedDefaultValue="0.0",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=FBC9F81D4E3E519A67B8DB9F8DF3EE82,PinName="UndistortOverscanFactor",PinToolTip="未变形过扫描因子\n浮动\n\n未变形渲染的过扫描因子。",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="1",AutogeneratedDefaultValue="0.0",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=F7F38CFD47D34A5FE4DE3A9FEE2F2B82,PinName="OutputRenderTarget",PinToolTip="输出渲染目标\n纹理渲染目标2D物体引用\n\n进行绘制的渲染目标。不必拥有和变形渲染相同的分辨率或高宽比。",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/Engine.TextureRenderTarget2D',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultObject="/Game/RT_00.RT_00",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=3EA265BD4D6E66170D25E4B760B8C4B9,PinName="OutputMultiply",PinToolTip="输出乘法\n浮动\n\n应用在置换上的乘法因子。",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.500000",AutogeneratedDefaultValue="0.500000",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=41D4A4834F5BF73382730A915976A8AA,PinName="OutputAdd",PinToolTip="输出加法\n浮动\n\n保存到输出渲染目标之前被添加到相乘置换的值。",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.500000",AutogeneratedDefaultValue="0.500000",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_MakeStruct Name="K2Node_MakeStruct_96" bMadeAfterOverridePinRemoval=True ShowPinForProperties(0)=(PropertyName="K1",PropertyFriendlyName="K1",PropertyTooltip=NSLOCTEXT("", "AAE0E1744CF690D4533F5B8735A92401", "Radial parameter #1."),CategoryName="Lens Distortion|Camera Model",bShowPin=True,bCanToggleVisibility=True,bPropertyIsCustomized=True) ShowPinForProperties(1)=(PropertyName="K2",PropertyFriendlyName="K2",PropertyTooltip=NSLOCTEXT("", "21EF07AD4C81C729E14C25902E1EC1D4", "Radial parameter #2."),CategoryName="Lens Distortion|Camera Model",bShowPin=True,bCanToggleVisibility=True,bPropertyIsCustomized=True) ShowPinForProperties(2)=(PropertyName="K3",PropertyFriendlyName="K3",PropertyTooltip=NSLOCTEXT("", "51EE62C949CD22B416EAF4932244E40C", "Radial parameter #3."),CategoryName="Lens Distortion|Camera Model",bShowPin=True,bCanToggleVisibility=True,bPropertyIsCustomized=True) ShowPinForProperties(3)=(PropertyName="P1",PropertyFriendlyName="P1",PropertyTooltip=NSLOCTEXT("", "739015D3419D714685C9AB810122ECC7", "Tangential parameter #1."),CategoryName="Lens Distortion|Camera Model",bShowPin=True,bCanToggleVisibility=True,bPropertyIsCustomized=True) ShowPinForProperties(4)=(PropertyName="P2",PropertyFriendlyName="P2",PropertyTooltip=NSLOCTEXT("", "294AD7ED4093BCA7AFBF01B8EC0C9A93", "Tangential parameter #2."),CategoryName="Lens Distortion|Camera Model",bShowPin=True,bCanToggleVisibility=True,bPropertyIsCustomized=True) ShowPinForProperties(5)=(PropertyName="F",PropertyFriendlyName="F",PropertyTooltip=NSLOCTEXT("", "A99C20144CE2EBB9DD0A62B672BE148D", "Camera matrix's Fx and Fy."),CategoryName="Lens Distortion|Camera Model",bShowPin=True,bCanToggleVisibility=True,bPropertyIsCustomized=True) ShowPinForProperties(6)=(PropertyName="C",PropertyFriendlyName="C",PropertyTooltip=NSLOCTEXT("", "68542CDC4C0F33F2FA893981BFBFAF16", "Camera matrix's Cx and Cy."),CategoryName="Lens Distortion|Camera Model",bShowPin=True,bCanToggleVisibility=True,bPropertyIsCustomized=True) StructType=ScriptStruct'/Script/Foo.FooCameraModel' NodePosX=-656 NodePosY=384 AdvancedPinDisplay=Shown NodeGuid=891CB1A843FED8C70EA3B28B103CB264 CustomProperties Pin (PinId=9EB96E474F8D2725864D30B6ECDFF41F,PinName="FooCameraModel",Direction="EGPD_Output",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/Foo.FooCameraModel',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_CallFunction_415 F2AB8E6441774533823DD2A413DEF544,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=2B2D8DA343819F2653E8FD8EDB5CCF2E,PinName="K1",PinFriendlyName=NSLOCTEXT("", "51FD07904E508F7CB13C93BD688F8053", "K1"),PinToolTip="K1\n浮动\n\n径向参数 #1。",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.000000",AutogeneratedDefaultValue="0.000000",LinkedTo=(K2Node_VariableGet_576 A5D1350D4684134EB5EDE0B43F3983D6,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=3704C64244726B58EC95F2A67CFF69A6,PinName="K2",PinFriendlyName=NSLOCTEXT("", "E801FDE14963B939270257AD8B050D63", "K2"),PinToolTip="K2\n浮动\n\n径向参数 #2。",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.000000",AutogeneratedDefaultValue="0.000000",LinkedTo=(K2Node_VariableGet_577 F9AAFCFC4510CDA989300C82B66FDD0A,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=6BBE5F394D044BCFCB0DE791007C3C29,PinName="K3",PinFriendlyName=NSLOCTEXT("", "23B742A84529B786D655BAA474DF093F", "K3"),PinToolTip="K3\n浮动\n\n径向参数 #3。",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.000000",AutogeneratedDefaultValue="0.000000",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=True,bOrphanedPin=False,) CustomProperties Pin (PinId=750F705D4ABB4FEC5A0E2F94FAFC71D2,PinName="P1",PinFriendlyName=NSLOCTEXT("", "12DC4DF74BEABC4D838FC1B6B6AE31D9", "P1"),PinToolTip="P1\n浮动\n\nT切向参数 #1。",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.000000",AutogeneratedDefaultValue="0.000000",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=True,bOrphanedPin=False,) CustomProperties Pin (PinId=0CC9318C424EDB349C2708B0FC278312,PinName="P2",PinFriendlyName=NSLOCTEXT("", "F697F2D046F8BCE75C362E907893C2CE", "P2"),PinToolTip="P2\n浮动\n\n切向参数 #2。",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.000000",AutogeneratedDefaultValue="0.000000",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=True,bOrphanedPin=False,) CustomProperties Pin (PinId=C1ED9647469C1C9EEB589195C808CA4F,PinName="F",PinFriendlyName=NSLOCTEXT("", "87C4A2A842A30F6626475C9B1A20B3C1", "F"),PinToolTip="F\n向量2D结构\n\n相机矩阵的Fx和Fy。",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Vector2D',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="(X=1.000000,Y=1.000000)",AutogeneratedDefaultValue="(X=1.000000,Y=1.000000)",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=True,bOrphanedPin=False,) CustomProperties Pin (PinId=D3F2C462415328548B3A7DB01661C58B,PinName="C",PinFriendlyName=NSLOCTEXT("", "0D0E5404467E73DD95C63F894611758E", "C"),PinToolTip="C\n向量2D结构\n\n相机矩阵的Cx和Cy。",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Vector2D',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="(X=0.500000,Y=0.500000)",AutogeneratedDefaultValue="(X=0.500000,Y=0.500000)",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=True,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_VariableGet Name="K2Node_VariableGet_576" VariableReference=(MemberName="K1",MemberGuid=4839CC3849FA034E4200C5930E5527BE,bSelfContext=True) NodePosX=-880 NodePosY=528 NodeGuid=9D923D8B485BDBC67AE6C49857387A19 CustomProperties Pin (PinId=A5D1350D4684134EB5EDE0B43F3983D6,PinName="K1",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_MakeStruct_96 2B2D8DA343819F2653E8FD8EDB5CCF2E,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=855757D34C3ACB48D139749625D425A1,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=BlueprintGeneratedClass'/Game/DrawUVDisToRenderTarget.DrawUVDisToRenderTarget_C',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_VariableGet Name="K2Node_VariableGet_577" VariableReference=(MemberName="K2",MemberGuid=D895BC2A4F39BE80B8EAD096E8B7700E,bSelfContext=True) NodePosX=-880 NodePosY=576 NodeGuid=EF3CEEFE4A1744607E5ADFAAFC05FD12 CustomProperties Pin (PinId=F9AAFCFC4510CDA989300C82B66FDD0A,PinName="K2",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_MakeStruct_96 3704C64244726B58EC95F2A67CFF69A6,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=21CD4CBD4F198D2481CD28BDE8611989,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=BlueprintGeneratedClass'/Game/DrawUVDisToRenderTarget.DrawUVDisToRenderTarget_C',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_Event Name="K2Node_Event_192" EventReference=(MemberParent=Class'/Script/Engine.Actor',MemberName="ReceiveTick") bOverrideFunction=True NodePosX=-1024 NodePosY=320 NodeGuid=B7AA8C13412B9A161A352B92CA6A517B CustomProperties Pin (PinId=0946FFD548ACE53983F881B5777ABC2F,PinName="OutputDelegate",Direction="EGPD_Output",PinType.PinCategory="delegate",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(MemberParent=Class'/Script/Engine.Actor',MemberName="ReceiveTick"),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=CF3109B747079A44B53B3DB5B51020FC,PinName="then",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_CallFunction_416 79BFE6EF42D85E5A60B44D92A288F50C,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=42C21E7D47A3E8C35F8585A663FFBFB5,PinName="DeltaSeconds",PinToolTip="Delta Seconds\n浮动",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_InputKey Name="K2Node_InputKey_192" InputKey=W NodePosX=-976 NodePosY=-161 NodeGuid=4FBA7A1249F1F885C74D75AA91AC55F2 CustomProperties Pin (PinId=0429EAAA4F3A1525226DAE8C05168835,PinName="Pressed",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_VariableSet_384 34FD5FE0407CEFD46D3AE59501650E22,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=1AAED7B94E1848D93AC4D1A2C1FF372D,PinName="Released",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=5E9345974B5A3DDD591CC19CB2AAB597,PinName="Key",Direction="EGPD_Output",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/InputCore.Key',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="AnyKey",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_VariableGet Name="K2Node_VariableGet_578" VariableReference=(MemberName="K1",MemberGuid=4839CC3849FA034E4200C5930E5527BE,bSelfContext=True) NodePosX=-880 NodePosY=-65 NodeGuid=B4638D624BC2F7C9D6FD4588B8F3E398 CustomProperties Pin (PinId=4B8548F545AA42E5DEAA30BB788BDFD5,PinName="K1",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_CommutativeAssociativeBinaryOperator_288 2881016344EEA036B25198B1A2901731,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=ED52FD8B45FABD0DB36912A73E4B4A42,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=BlueprintGeneratedClass'/Game/DrawUVDisToRenderTarget.DrawUVDisToRenderTarget_C',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_CommutativeAssociativeBinaryOperator Name="K2Node_CommutativeAssociativeBinaryOperator_288" bIsPureFunc=True FunctionReference=(MemberParent=Class'/Script/Engine.KismetMathLibrary',MemberName="Add_FloatFloat") NodePosX=-736 NodePosY=-43 NodeGuid=9C35063A4FDEA57DACE141B8111FD85F CustomProperties Pin (PinId=31DA9D4E432BCD1808FA6E85CB5FAC16,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/Engine.KismetMathLibrary',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultObject="/Script/Engine.Default__KismetMathLibrary",PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=2881016344EEA036B25198B1A2901731,PinName="A",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_VariableGet_578 4B8548F545AA42E5DEAA30BB788BDFD5,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=0F92D08C4BA9B44D30CBD388DA7B164C,PinName="B",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="1.000000",AutogeneratedDefaultValue="1.000000",LinkedTo=(K2Node_VariableGet_580 2980C241419284FB7AE273AF1E29C508,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=16B924E244A4C93A9D11E5B6D0644337,PinName="ReturnValue",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_VariableSet_384 5F4C474943E3F540C19AB698F5128FD4,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_VariableSet Name="K2Node_VariableSet_384" VariableReference=(MemberName="K1",MemberGuid=4839CC3849FA034E4200C5930E5527BE,bSelfContext=True) NodePosX=-560 NodePosY=-80 NodeGuid=193B539C4A92386BB27C14ACC1591AFE CustomProperties Pin (PinId=34FD5FE0407CEFD46D3AE59501650E22,PinName="execute",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_InputKey_192 0429EAAA4F3A1525226DAE8C05168835,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=4855AEC64D016016F1DBA0B7F06F6E34,PinName="then",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=5F4C474943E3F540C19AB698F5128FD4,PinName="K1",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_CommutativeAssociativeBinaryOperator_288 16B924E244A4C93A9D11E5B6D0644337,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=B369DA294B0EFE460125B89D37B36016,PinName="Output_Get",PinToolTip="获取变量的值，可用于替代单独的Get节点",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=375B1D804A328D8760AD28AE350A5683,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=BlueprintGeneratedClass'/Game/DrawUVDisToRenderTarget.DrawUVDisToRenderTarget_C',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_InputKey Name="K2Node_InputKey_193" InputKey=S NodePosX=-976 NodePosY=32 NodeGuid=15E31E514BEC9996A60ABB8835A76ECC CustomProperties Pin (PinId=8E7ECA29433D7EDD8DCDA9AEF8A6CAB3,PinName="Pressed",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_VariableSet_385 34FD5FE0407CEFD46D3AE59501650E22,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=68CE8604440CA4A0CEACDFAB4483450D,PinName="Released",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=811D73054ED84FD4651E0D94C848DB85,PinName="Key",Direction="EGPD_Output",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/InputCore.Key',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="AnyKey",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_VariableGet Name="K2Node_VariableGet_579" VariableReference=(MemberName="K1",MemberGuid=4839CC3849FA034E4200C5930E5527BE,bSelfContext=True) NodePosX=-848 NodePosY=117 NodeGuid=FF6F5BDF4D0BFAF03F5310BAEDD12754 CustomProperties Pin (PinId=4B8548F545AA42E5DEAA30BB788BDFD5,PinName="K1",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_CommutativeAssociativeBinaryOperator_289 2881016344EEA036B25198B1A2901731,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=ED52FD8B45FABD0DB36912A73E4B4A42,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=BlueprintGeneratedClass'/Game/DrawUVDisToRenderTarget.DrawUVDisToRenderTarget_C',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_CommutativeAssociativeBinaryOperator Name="K2Node_CommutativeAssociativeBinaryOperator_289" bIsPureFunc=True FunctionReference=(MemberParent=Class'/Script/Engine.KismetMathLibrary',MemberName="Add_FloatFloat") NodePosX=-688 NodePosY=133 NodeGuid=B6EF6E4D40028BE66750DFBFC28D5026 CustomProperties Pin (PinId=31DA9D4E432BCD1808FA6E85CB5FAC16,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinToolTip="目标\nKismet数学库引用",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/Engine.KismetMathLibrary',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultObject="/Script/Engine.Default__KismetMathLibrary",PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=2881016344EEA036B25198B1A2901731,PinName="A",PinToolTip="A\n浮动",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_VariableGet_579 4B8548F545AA42E5DEAA30BB788BDFD5,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=0F92D08C4BA9B44D30CBD388DA7B164C,PinName="B",PinToolTip="B\n浮动",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="1.000000",AutogeneratedDefaultValue="1.000000",LinkedTo=(K2Node_CommutativeAssociativeBinaryOperator_290 783E07954DAB142BA4459BA53C394344,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=16B924E244A4C93A9D11E5B6D0644337,PinName="ReturnValue",PinToolTip="返回值\n浮动",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_VariableSet_385 5F4C474943E3F540C19AB698F5128FD4,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_VariableSet Name="K2Node_VariableSet_385" VariableReference=(MemberName="K1",MemberGuid=4839CC3849FA034E4200C5930E5527BE,bSelfContext=True) NodePosX=-512 NodePosY=96 NodeGuid=2D13E4BF4CB4A7FC1523E1AE69AA90A3 CustomProperties Pin (PinId=34FD5FE0407CEFD46D3AE59501650E22,PinName="execute",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_InputKey_193 8E7ECA29433D7EDD8DCDA9AEF8A6CAB3,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=4855AEC64D016016F1DBA0B7F06F6E34,PinName="then",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=5F4C474943E3F540C19AB698F5128FD4,PinName="K1",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_CommutativeAssociativeBinaryOperator_289 16B924E244A4C93A9D11E5B6D0644337,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=B369DA294B0EFE460125B89D37B36016,PinName="Output_Get",PinToolTip="获取变量的值，可用于替代单独的Get节点",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=375B1D804A328D8760AD28AE350A5683,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=BlueprintGeneratedClass'/Game/DrawUVDisToRenderTarget.DrawUVDisToRenderTarget_C',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_VariableGet Name="K2Node_VariableGet_580" VariableReference=(MemberName="inc",MemberGuid=4884B3C94FC8DF3C61FE879F885C0513,bSelfContext=True) NodePosX=-880 NodePosY=-1 NodeGuid=04CFCC974D09F5C39905CC92FE6A1713 CustomProperties Pin (PinId=2980C241419284FB7AE273AF1E29C508,PinName="inc",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_CommutativeAssociativeBinaryOperator_288 0F92D08C4BA9B44D30CBD388DA7B164C,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=F03E9DF14235EE0A66DA7A8AE9CCEC0A,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=BlueprintGeneratedClass'/Game/DrawUVDisToRenderTarget.DrawUVDisToRenderTarget_C',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_VariableGet Name="K2Node_VariableGet_581" VariableReference=(MemberName="inc",MemberGuid=4884B3C94FC8DF3C61FE879F885C0513,bSelfContext=True) NodePosX=-1024 NodePosY=165 NodeGuid=0EB1B27D4A04A1C09B751CA82FBE119E CustomProperties Pin (PinId=3A16050E455FC2A7B8753280F3B3A49F,PinName="inc",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_CommutativeAssociativeBinaryOperator_290 A361B639411834B96FE764A2D4906668,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=B918EB1D428E95863AB5D7B814A3BB9E,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=BlueprintGeneratedClass'/Game/DrawUVDisToRenderTarget.DrawUVDisToRenderTarget_C',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_CommutativeAssociativeBinaryOperator Name="K2Node_CommutativeAssociativeBinaryOperator_290" bIsPureFunc=True FunctionReference=(MemberParent=Class'/Script/Engine.KismetMathLibrary',MemberName="Multiply_FloatFloat") NodePosX=-848 NodePosY=168 NodeGuid=BDAB4F194B50AE675B4401BB9D6C8C39 CustomProperties Pin (PinId=3FDEE1EC4FC5966307A607902689EAEB,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/Engine.KismetMathLibrary',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultObject="/Script/Engine.Default__KismetMathLibrary",PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=A361B639411834B96FE764A2D4906668,PinName="A",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_VariableGet_581 3A16050E455FC2A7B8753280F3B3A49F,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=BC525A6F442150954DE5E5BEE36BC24A,PinName="B",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="-1",AutogeneratedDefaultValue="0.0",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=783E07954DAB142BA4459BA53C394344,PinName="ReturnValue",Direction="EGPD_Output",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.0",AutogeneratedDefaultValue="0.0",LinkedTo=(K2Node_CommutativeAssociativeBinaryOperator_289 0F92D08C4BA9B44D30CBD388DA7B164C,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_CallFunction Name="K2Node_CallFunction_416" FunctionReference=(MemberParent=Class'/Script/Engine.KismetRenderingLibrary',MemberName="ClearRenderTarget2D") NodePosX=-880 NodePosY=320 NodeGuid=FE0330D94D3366BD6864BDB61EE7936C CustomProperties Pin (PinId=79BFE6EF42D85E5A60B44D92A288F50C,PinName="execute",PinToolTip="\n执行",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_Event_192 CF3109B747079A44B53B3DB5B51020FC,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=90ED15F94550FFA4BBC36CA3442B9E34,PinName="then",PinToolTip="\n执行",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_CallFunction_415 37A50945406550EE210602B9EDA46A00,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=701455F543533B934DAD6D9724A33137,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinToolTip="目标\nKismet 渲染库对象引用",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/Engine.KismetRenderingLibrary',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultObject="/Script/Engine.Default__KismetRenderingLibrary",PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=0410B7A34146C336929C98820F4C4F9A,PinName="WorldContextObject",PinToolTip="场景内容物体\n对象物体引用",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/CoreUObject.Object',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=BC869BDB4035291D58A4F5BCF647E7BC,PinName="TextureRenderTarget",PinToolTip="纹理渲染目标\n纹理渲染目标2D对象引用",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/Engine.TextureRenderTarget2D',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultObject="/Game/RT_00.RT_00",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=B131BC83400BC3963FBF45A829987EA1,PinName="ClearColor",PinToolTip="清楚颜色\n线性颜色结构",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.LinearColor',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="(R=0.000000,G=0.000000,B=0.000000,A=1.000000)",AutogeneratedDefaultValue="(R=0.000000,G=0.000000,B=0.000000,A=1.000000)",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/UnrealEd.EdGraphNode_Comment Name="EdGraphNode_Comment_5" NodePosX=-1048 NodePosY=-222 NodeWidth=688 NodeHeight=480 NodeComment="增加（W）或降低（S）UV置换" NodeGuid=F9DBA6D24A88AC009B27B0A979C22582 End Object Begin Object Class=/Script/UnrealEd.EdGraphNode_Comment Name="EdGraphNode_Comment_3" NodePosX=-1056 NodePosY=272 NodeWidth=1088 NodeHeight=400 NodeComment="确保仅绘制最新K1和K2输入值" NodeGuid=8A0F32874A5E6677357A34A938594544 End Object END OBJECT

可直接将此蓝图代码复制粘贴到蓝图中。

需要将渲染目标输入 Output Render Target，否则不会有效果。

所需的蓝图逻辑设置完成后，编译并保存蓝图，然后将蓝图从 内容浏览器 拖入 关卡。完成后，选择蓝图，在 输入下将自动接收输入（Auto Receive Input）从禁用（Disabled）改为 Player 0**。

点击查看大图。

接下来选中地面，按下 CTRL + W 复制，然后在 X 轴中将其旋转 -90 度，然后将材质 MAT_RT 拖到其上方，即可看到Draw UVDisplacement to Render Target的效果。

点击查看大图。

所有内容设置完成后，按下 Play 按钮，再按下 W 和 S 键对输入Draw UVDisplacement to Render Target节点的渲染目标执行变形，效果与以下视频相似。

最终结果

此时您便已学习到如何通过蓝图对渲染目标中的内容执行变形，创建各种有趣的形状。下一步可以尝试新建一个插件，或对现有插件进行编辑，看能否创建出有趣的图像和效果。