问题
Ive been trying to get a VR View setup on my page following the examples and such at https://developers.google.com/vr/concepts/vrview, the image i'm using is a cardboard camera 'photo' copied from my device, but i've also used a regular jpg version just to be sure.
No matter what i try when the widget loads it only ever shows the error message
Render: Unable to load Texture from image.jpg
I've also noticed a bunch of tutorial or example site having the same issue that i assume they didn't have when they first posted the pages.
Does anyone have a clue why its doing this and how to fix it?
回答1:
The image that is produced by Cardboard Camera is not in the correct format. VR view requires a equirectangular-panoramic image, and for stereo images, they need to be stacked. See https://developers.google.com/vr/concepts/vrview#supported_formats for Reference.
There is a link to convert Cardboard Camera images to the correct format: https://storage.googleapis.com/cardboard-camera-converter/index.html
There are also a couple codelabs that walk through using VR view, including converting the image to the correct format: https://codelabs.developers.google.com/?cat=Virtual+Reality
回答2:
Primary reason for the error you have mentioned is "CORS". Cross-Origin Resource Sharing.
Your image is not accessible to the calling iframe script. Which is hosted on Google servers.
http://enable-cors.org/
Once you enable CORS, it will work. The reason you have mentioned that it started working once you cloned it locally, is the same. Now the vr script and image are having same origin :)
来源：https://stackoverflow.com/questions/37474383/vr-view-render-unable-to-load-texture-from-image-jpg