FirstPerson

FirstPerson and Renderer visibility control

It is a function for VR

When using a VRM model as a VR avatar, the view is obstructed if the model’s head mesh is visible in the first person view.To solve this, it becomes a function to change the visibility attribute of the mesh in the VRHMD Camera’s first person perspective (FirstPerson) and other perspectives (ThirdPerson).

Project Settings

UniVRMの推奨する VR 向けのカメラ構成です。

Consider two types of cameras: cameras representing head-mounted displays and other cameras.UniVRM defaults to Layer 9 VRMFirstPersonOnly and Layer 10 VRMThirdPersonOnly.The two layers can also be specified with an argument when loading the runtime.

VRMFirstPersonOnly

FIRSTPERSON_ONLY_LAYER(The gameObject that specifies this layer disappears from other cameras)

Example: Special use such as a competition?

VRMThirdPersonOnly

THIRDPERSON_ONLY_LAYER(The gameObject that specifies this layer disappears from the head-mounted display)

Example: Suppress the drawing of the avatar’s head, hair, glasses, etc. so that the front can be seen

Please set VRMFirstPersonOnly and VRMThirdPersonOnly to Project Settings-Tags and Layers.

Tags & Layers

Default layer number

The default is FirstPerson = 9, ThirdPerson = 10.

Can be specified as an argument to FirstPerson.SetupAsync.

var created = await controller.Vrm.FirstPerson.SetupAsync(
    controller.gameObject, firstPersonOnlyLayer: 9, thirdPersonOnlyLayer: 10);

Camera configuration

FirstPerson: MainCamera の CullingMask

Place a VR camera (HMD) in the scene and check FirstPerson of CullingMask.

Camera for VR

A first-person rendering camera for VR. This is usually the main camera.. This is usually the main camera.

FirstPerson

ThirdPerson: OtherCamera の CullingMask

Place an additional camera in the scene other than the HMD and check ThirdPerson for CullingMask.

Third person camera

RenderTexture cameras for mirrors and streams.

FirstPerson

Enable FirstPerson function at runtime.

The VR First Person settings.

1. Load

2. Get Vrm10Instance

3. Call Vrm10Instance.Vrm.FirstPerson.SetupAsync

4. ShowMeshes

async Task<RuntimeGltfInstance> LoadAsync(string path)
{
    var data = new GlbFileParser(path).Parse();
    if (!Vrm10Data.TryParseOrMigrate(data, true, out Vrm10Data vrm))
    {
        throw new System.Exception("vrm parse error !");
    }
    using (var loader = new Vrm10Importer(vrm))
    {
        // 1.
        var instance = await loader.LoadAsync();

        // 2.
        var controller = instance.GetComponent<Vrm10Instance>();

        // 3. The headless model that created is added to instance
        await controller.Vrm.FirstPerson.SetupAsync(controller.gameObject);

        // 4. 
        instance.ShowMeshes();

        return instance;
    }
}

Sample

複数のカメラを配置したサンプルシーンがあります。

• Assets/VRM10_Samples/VRM10FirstPersonSample