UE4 图片转为UTexture2D 修改版

UTexture2D * UCamerTexture::LoadTexture2D(const FString & ImagePath, bool & IsValid, int32 & OutWidth, int32 & OutHeight)
{
	UTexture2D* Texture = nullptr;
	IsValid = false;
	if (!FPlatformFileManager::Get().GetPlatformFile().FileExists(*ImagePath))
	{
		return nullptr;
	}
	TArray CompressedData;
	if (!FFileHelper::LoadFileToArray(CompressedData, *ImagePath))
	{
		return nullptr;
	}
	TSharedPtr ImageWrapper = GetImageWrapperByExtention(ImagePath);
	if (ImageWrapper.IsValid() && ImageWrapper->SetCompressed(CompressedData.GetData(), CompressedData.Num()))
	{
		const TArray* UncompressedRGBA = nullptr;
		if (ImageWrapper->GetRaw(ERGBFormat::RGBA, 8, UncompressedRGBA))
		{
			Texture = UTexture2D::CreateTransient(ImageWrapper->GetWidth(), ImageWrapper->GetHeight(), PF_R8G8B8A8);
			if (Texture != nullptr)
			{
				IsValid = true;
				OutWidth = ImageWrapper->GetWidth();
				OutHeight = ImageWrapper->GetHeight();
				void* TextureData = Texture->PlatformData->Mips[0].BulkData.Lock(LOCK_READ_WRITE);
				FMemory::Memcpy(TextureData, UncompressedRGBA->GetData(), UncompressedRGBA->Num());
				Texture->PlatformData->Mips[0].BulkData.Unlock();
				Texture->UpdateResource();
			}
		}
	}
	return Texture;

}