UObject* UMaterialFactoryNew::FactoryCreateNew(UClass* Class,UObject* InParent,FName Name,EObjectFlags Flags,UObject* Context,FFeedbackContext* Warn)

{

UMaterial* NewMaterial = NewObject<UMaterial>(InParent, Class, Name, Flags);

if ( InitialTexture != nullptr )

{

// An initial texture was specified, add it and assign it to the BaseColor

UMaterialExpressionTextureSample* TextureSampler = NewObject<UMaterialExpressionTextureSample>(NewMaterial);

{

//这里是编辑记录

TextureSampler->MaterialExpressionEditorX = -250;

TextureSampler->Texture = InitialTexture;

//纹理类型

TextureSampler->AutoSetSampleType();

}

NewMaterial->Expressions.Add(TextureSampler);

//FExpressionInput/OutPut 是表达式逻辑节点输入的抽象

FExpressionOutput& Output = TextureSampler->GetOutputs()[0];

FExpressionInput& Input = (TextureSampler->SamplerType == SAMPLERTYPE_Normal)

? (FExpressionInput&)NewMaterial->Normal

: (FExpressionInput&)NewMaterial->BaseColor;

Input.Expression = TextureSampler;

Input.Mask = Output.Mask;

Input.MaskR = Output.MaskR;

Input.MaskG = Output.MaskG;

Input.MaskB = Output.MaskB;

Input.MaskA = Output.MaskA;

NewMaterial->PostEditChange();

}

return NewMaterial;

}

UFUNCTION(BlueprintCallable,Category= "MaterialStudio|MatNodeLib")

static UMaterial* QuickPreviewTextureOnMaterialBNode(const UTexture* pTexture,const UMaterial* pMaterial);