UE4 微笔记 之 调整网格材质参数

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