UE4 微笔记 之 调整网格材质参数

简单记录一下调整网格(Mesh)材质参数的方法

修改网格材质参数一般有以下几个步骤:

首先创建材质参数(这里有较详细的说明)创建动态材质实例(UMaterialInstanceDynamic)设置动态材质参数(通过 SetVectorParameterValue 等方法)

以下是一段简单的代码示例:

void SetMeshMaterial(UMeshComponent* MeshComponent, int MaterialIndex){if (MeshComponent){auto Material = MeshComponent->GetMaterial(MaterialIndex);if (!Material){// create material if neededMaterial = LoadObject(nullptr, TEXT("/Game/TemplateMaterial"));}if (Material){// check if material is already dynamicauto MaterialInstance = Cast<UMaterialInstanceDynamic>(Material);if (!MaterialInstance){// create dynamic material if neededMaterialInstance = UMaterialInstanceDynamic::Create(Material, nullptr);// set mesh materialMeshComponent->SetMaterial(MaterialIndex, MaterialInstance);}// now we can set material params by SetVectorParameterValue etc.//MaterialInstance->SetVectorParameterValue(TEXT("BaseColor"), FLinearColor::White);}}}

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