private void TranscodeTexture(ref OVRTextureData textureData) { if (textureData.format == OVRTextureFormat.KTX2) { OVRKtxTexture.Load(textureData.data, ref textureData); } else { Debug.LogWarning("Only KTX2 textures can be trascoded."); } }
public static bool Load(byte[] data, ref OVRTextureData ktxData) { int unmanagedSize = Marshal.SizeOf(data[0]) * data.Length; IntPtr dataPtr = Marshal.AllocHGlobal(unmanagedSize); Marshal.Copy(data, 0, dataPtr, data.Length); IntPtr ktxTexturePtr = OVRPlugin.Ktx.LoadKtxFromMemory(dataPtr, (uint)data.Length); Marshal.FreeHGlobal(dataPtr); ktxData.width = (int)OVRPlugin.Ktx.GetKtxTextureWidth(ktxTexturePtr); ktxData.height = (int)OVRPlugin.Ktx.GetKtxTextureHeight(ktxTexturePtr); bool transcodeResult = false; #if UNITY_ANDROID && !UNITY_EDITOR transcodeResult = OVRPlugin.Ktx.TranscodeKtxTexture(ktxTexturePtr, KTX_TTF_ASTC_4x4_RGBA); ktxData.transcodedFormat = TextureFormat.ASTC_4x4; #else transcodeResult = OVRPlugin.Ktx.TranscodeKtxTexture(ktxTexturePtr, KTX_TTF_BC7_RGBA); ktxData.transcodedFormat = TextureFormat.BC7; #endif if (!transcodeResult) { Debug.LogError("Failed to transcode KTX texture."); return(false); } uint textureSize = OVRPlugin.Ktx.GetKtxTextureSize(ktxTexturePtr); IntPtr textureDataPtr = Marshal.AllocHGlobal(sizeof(byte) * (int)textureSize); if (!OVRPlugin.Ktx.GetKtxTextureData(ktxTexturePtr, textureDataPtr, textureSize)) { Debug.LogError("Failed to get texture data from Ktx texture reference"); return(false); } byte[] textureData = new byte[textureSize]; Marshal.Copy(textureDataPtr, textureData, 0, textureData.Length); Marshal.FreeHGlobal(textureDataPtr); ktxData.data = textureData; OVRPlugin.Ktx.DestroyKtxTexture(ktxTexturePtr); return(true); }
private OVRTextureData ProcessTexture(int textureId) { var jsonTexture = m_jsonData["textures"][textureId]; int imageSource = -1; var jsonExtensions = jsonTexture["extensions"]; if (jsonExtensions != null) { var baisuExtension = jsonExtensions["KHR_texture_basisu"]; if (baisuExtension != null) { imageSource = baisuExtension["source"].AsInt; } } else { imageSource = jsonTexture["source"].AsInt; } var jsonSource = m_jsonData["images"][imageSource]; int sampler = jsonTexture["sampler"].AsInt; var jsonSampler = m_jsonData["samplers"][sampler]; int bufferViewId = jsonSource["bufferView"].AsInt; var jsonBufferView = m_jsonData["bufferViews"][bufferViewId]; OVRGLTFAccessor dataReader = new OVRGLTFAccessor(jsonBufferView, m_jsonData, true); OVRTextureData textureData = new OVRTextureData(); if (jsonSource["mimeType"].Value == "image/ktx2") { textureData.data = dataReader.ReadAsKtxTexture(m_binaryChunk); textureData.format = OVRTextureFormat.KTX2; } else { Debug.LogWarning("Unsupported image mimeType."); } return(textureData); }