This is a lightweight GLTF model⁠ loader that is guaranteed to work with models loaded from the Meta Quest runtime using OVRPlugin.LoadRenderModel OVRPlugin.LoadRenderModel.

The loader only accepts GLTF files/data in the GLB format⁠. We do not recommended using this class as a general purpose GLTF loader.

Constructors

OVRGLTFLoader ( fileName )	Creates a new GLTF loader using a file path. Signature OVRGLTFLoader(string fileName) Parameters `fileName: string` Path to GLB file
OVRGLTFLoader ( data )	Creates a new GLTF loader using a binary data array. Signature OVRGLTFLoader(byte[] data) Parameters `data: byte[]` GLB byte data
OVRGLTFLoader ( deferredStream )	Creates a new GLTF loader with a deferred data stream. This should be used with OVRGLTFLoader.LoadGLBCoroutine to allow for async loading of the GLTF model. This can help prevent stalling on complex GLTF models. Signature OVRGLTFLoader(Func< Stream > deferredStream) Parameters `deferredStream: Func< Stream >` GLB data as a Stream

Fields

scene : OVRGLTFScene	Signature OVRGLTFScene scene
textureUriHandler : Func< string, Material, Texture2D >	Signature Func<string, Material, Texture2D> textureUriHandler

Static Fields

GLTFToUnitySpace : readonly Vector3	Signature readonly Vector3 GLTFToUnitySpace
GLTFToUnitySpace_Rotation : readonly Vector4	Signature readonly Vector4 GLTFToUnitySpace_Rotation
GLTFToUnityTangent : readonly Vector3	Signature readonly Vector3 GLTFToUnityTangent

Methods

LoadGLB ( supportAnimation , loadMips )	Starts the loading process for the full GLTF file into Unity. Signature OVRGLTFScene LoadGLB(bool supportAnimation, bool loadMips=true) Parameters `supportAnimation: bool` Load GLTF animations. `loadMips: bool` Load GLTF textures with mip maps. Returns `OVRGLTFScene` Full GLTF scene
LoadGLBCoroutine ( supportAnimation , loadMips )	Starts the loading process for the full GLTF file into Unity as a coroutine. This can help prevent stalling as loading will be spread out over multiple frames. Signature IEnumerator LoadGLBCoroutine(bool supportAnimation, bool loadMips=true) Parameters `supportAnimation: bool` Load GLTF animations `loadMips: bool` Load GLTF textures with mip maps. Returns `IEnumerator` IEnumerator that can be yielded on.
SetMipMapBias ( loadedTexturesMipmapBiasing )	Sets the MipMap bias value for loading all textures in the GLTF model. The default is 0. Only supported when MipMaps are loaded and the provided shader has a property named "_MainTexMMBias" Signature void SetMipMapBias(float loadedTexturesMipmapBiasing) Parameters `loadedTexturesMipmapBiasing: float` The value for bias. Value is clamped between [-1,1] Returns `void`
SetModelAlphaBlendShader ( shader )	Sets the alpha blending shader that should be used by the GLTF loader on materials. Signature void SetModelAlphaBlendShader(Shader shader) Parameters `shader: Shader` Shader to be used. Returns `void`
SetModelShader ( shader )	Sets the shader that should be used by the GLTF loader on materials. Signature void SetModelShader(Shader shader) Parameters `shader: Shader` Shader to be used. Returns `void`
SetTextureQualityFiltering ( loadedTexturesQuality )	Sets the texture quality for loading all textures in the GLTF model. The default is Bilinear. Once loaded, textures will be read-only on GPU memory. Signature void SetTextureQualityFiltering(OVRTextureQualityFiltering loadedTexturesQuality) Parameters `loadedTexturesQuality: OVRTextureQualityFiltering` The quality setting. Returns `void`

Static Methods

ApplyTextureQuality ( qualityLevel , destTexture )	Applies the input Texture Quality setting into the ref Texture2D provided as input. Texture2D must not be readonly. Signature static void ApplyTextureQuality(OVRTextureQualityFiltering qualityLevel, ref Texture2D destTexture) Parameters `qualityLevel: OVRTextureQualityFiltering` The quality level to apply `destTexture: ref Texture2D` The destination Texture2D to apply quality setting to Returns `void`
DetectTextureQuality ( srcTexture )	Decodes the Texture Quality setting from the input Texture2D properties' values. Signature static OVRTextureQualityFiltering DetectTextureQuality(in Texture2D srcTexture) Parameters `srcTexture: in Texture2D` The input Texture2D Returns `OVRTextureQualityFiltering` The enum TextureQualityFiltering representing the quality.
ReadChunk ( glbStream , type )	Reads a chunk of binary data from the stream that either represents the JSON or BIN part of the GLTF file. Signature static byte[] ReadChunk(Stream glbStream, OVRChunkType type) Parameters `glbStream: Stream` The binary stream of the GLTF file. `type: OVRChunkType` Type indicating which part of the GLTF file should be read. Returns `byte[]`
ValidateGLB ( glbStream )	Checks the GLB data stream to check if it is a valid GLTF file. Signature static bool ValidateGLB(Stream glbStream) Parameters `glbStream: Stream` Data stream of the GLB file. Returns `bool` If the stream is a valid GLTF file.