Training Stream - VR Networking and 3D Menu - Sept 8th, 2015

[ayretek]

takes a bit to upload to youtube usually, but check for past broadcasts on Unreal’s twitch page, usually up pretty soon after the broadcast.

usually!

[Wanderer_eternal]

@JoshieZombie;372748

Will there be a video up soon after of the stream? I’d love to learn more about VR, but I’m not sure I’ll be there for the stream.

Definitely yes but it would be better if we get an official answer

[TadGhostal79]

Usually the YouTube version does take a couple of days for the upload, but you can check out the Past Broadcasts on the Twitch page and you will be able to see it immediately there.

[n00854180t]

@Bajee;374278

An other question that just came to my mind:

Could you maybe explain all the different rotations and relative/absolute locations that are relevant to HMDs? It doesn’t seem to be too straight forward to even just get the world location of the HMD:

FVector GetHMDLocation(UWorld *World)
{
	FQuat Rotation;
	FVector Position;

	if(HMDIsAvailable())
	{
		GEngine->HMDDevice->GetCurrentOrientationAndPosition(Rotation, Position);
	}
	else
	{
		Rotation = FRotator::ZeroRotator.Quaternion();
		Position = FVector::ZeroVector;
	}

	FTransform Transform = GEngine->GetFirstLocalPlayerController(World)->PlayerCameraManager->GetTransform();
	const FQuat &RotationInverse = Rotation.Inverse();
	Position = RotationInverse.RotateVector(Position);
	FVector HMDPosInWorldSpace = Transform.TransformPosition(Position);
	return Position;
}

The first part is removing the HMD rotation from the position (inverse the HMD rotation, then rotate the HMD position by it), then the second bit is transforming the HMD position by the character’s transform to get it into world space.

[Porky_Grout]

This project ever get released?

This was posted a long time back and still seems very relevant since trying to launch a Multiplayer game in VR still seems pretty hard in Unreal. The support for the widgets and how they get garbled up in VR mode is hard to deal with.

Did you guys ever post the project? The key part seems to be all the magic with setting up the Menu to work via the controls and without using the Widget blueprint (21:00-22:00). It is somewhat glossed over in the video.

It seems like just releasing the project seems like it would be very helpful.

[anonymous_user_73f403c6]

How to get a 3D widget rendered inside the new stereo layer component?

Because stereo layers render directly to the headset’s compositor and skip world rendering/post processing, stuff inside the stereo layer has a lot of detail. That’s especially great for UI’s. But how to preserve interactivity of the UI inside a stereo layer?