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Unity UWP Build - Can't get Background Plane Texture

By lwarner on Thu, 04/18/2019 - 20:54

I am trying to use frames from the background texture of Vuforia. Every 0.25 seconds i get the background plane material > mainTexture. The texture is blank, although I can see the video output from Vuforia in the background plane.  My script is on the Vuforia camera. After Vuforia is initialized I run a few lines of code on the late update. targetMat = transform.GetChild(0).GetComponent<Renderer>().material; finalTex = targetMat.GetTexture("_MainTex") as Texture2D; This just returns a grey texture. I have other issues blocking my editor from playing, but before those issues this code would return the background plane in play mode. I am sure it still would. Is there a certain way i should get the video frames in UWP?

Hello,

We're tracking the following issue with SDK 8.1.7: https://developer.vuforia.com/forum/unity/bug-accessing-background-plane-texture-bug

Thanks,

Vuforia Engine Support

@medabit

After reading into it, I do believe my problem differs from the one in the link because I cannot get the background plane image, it reads as "invalid texture". The vuforia video feed works as expected. It just fails to get a readable texture. 

 

Hello @lwarner,

The dev team reviewed and believes this is a different manifestation of the same aforementioned problem with the SDK.

Thanks,

Vuforia Engine Support

 

Understood. I was able to solve this issue last night by using the OpenCV plugin. Using their  Utils.textureToTexture2D F(x) I was able to get the background plane background.

Hello,

Please refer to the following for a workaround solution: https://developer.vuforia.com/forum/unity/suggested-workaround-when-accessing-unity-materials-interferes-background-texture-updates

Thanks,

Vuforia Engine Support