{"action":"created","issue":{"url":"https://api.github.com/repos/gearvrf/GearVRf-Demos/issues/46","repository_url":"https://api.github.com/repos/gearvrf/GearVRf-Demos","labels_url":"https://api.github.com/repos/gearvrf/GearVRf-Demos/issues/46/labels{/name}","comments_url":"https://api.github.com/repos/gearvrf/GearVRf-Demos/issues/46/comments","events_url":"https://api.github.com/repos/gearvrf/GearVRf-Demos/issues/46/events","html_url":"https://github.com/gearvrf/GearVRf-Demos/issues/46","id":139816162,"number":46,"title":"gvr-Vuforia teapot slide issue.","user":{"login":"PsycoTodd","id":8716430,"avatar_url":"https://avatars.githubusercontent.com/u/8716430?v=3","gravatar_id":"","url":"https://api.github.com/users/PsycoTodd","html_url":"https://github.com/PsycoTodd","followers_url":"https://api.github.com/users/PsycoTodd/followers","following_url":"https://api.github.com/users/PsycoTodd/following{/other_user}","gists_url":"https://api.github.com/users/PsycoTodd/gists{/gist_id}","starred_url":"https://api.github.com/users/PsycoTodd/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/PsycoTodd/subscriptions","organizations_url":"https://api.github.com/users/PsycoTodd/orgs","repos_url":"https://api.github.com/users/PsycoTodd/repos","events_url":"https://api.github.com/users/PsycoTodd/events{/privacy}","received_events_url":"https://api.github.com/users/PsycoTodd/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":10,"created_at":"2016-03-10T08:08:17Z","updated_at":"2016-04-26T23:49:46Z","closed_at":null,"body":"Hello,\r\n\r\nThank you for the nice demo! However, I notice that in the gvr-Vuforia demo, when the user hold the image target and slightly shift the HMD, the virtual teapot shifts more which makes it not relatively fixed at the detected position. If the user move the card away from the camera, the teapot disappear.\r\n\r\nFor the disappearance issue, It is possible that the teapot is moved behind the quad of video, or just out of the Gear VR culling Frustum. In the original Vuforia VR demo, when drawing the background video quad, depth test is disabled so no matter how the object which is drawn after the video quad moves in z direction, it will not be hide. So my question is: how can we increase the Z-Far plane for larger culling Frustum, and how can we disable the depth test for the screen object to make sure that the 3D things drawn are all above the video?\r\n\r\nAnd for the 3D object slightly shift during moving the image target or move the head, is that possible due to the view port difference? \r\n\r\nHope to hear from you soon!"},"comment":{"url":"https://api.github.com/repos/gearvrf/GearVRf-Demos/issues/comments/214922906","html_url":"https://github.com/gearvrf/GearVRf-Demos/issues/46#issuecomment-214922906","issue_url":"https://api.github.com/repos/gearvrf/GearVRf-Demos/issues/46","id":214922906,"user":{"login":"PsycoTodd","id":8716430,"avatar_url":"https://avatars.githubusercontent.com/u/8716430?v=3","gravatar_id":"","url":"https://api.github.com/users/PsycoTodd","html_url":"https://github.com/PsycoTodd","followers_url":"https://api.github.com/users/PsycoTodd/followers","following_url":"https://api.github.com/users/PsycoTodd/following{/other_user}","gists_url":"https://api.github.com/users/PsycoTodd/gists{/gist_id}","starred_url":"https://api.github.com/users/PsycoTodd/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/PsycoTodd/subscriptions","organizations_url":"https://api.github.com/users/PsycoTodd/orgs","repos_url":"https://api.github.com/users/PsycoTodd/repos","events_url":"https://api.github.com/users/PsycoTodd/events{/privacy}","received_events_url":"https://api.github.com/users/PsycoTodd/received_events","type":"User","site_admin":false},"created_at":"2016-04-26T23:49:46Z","updated_at":"2016-04-26T23:49:46Z","body":"@liaxim As we can see here, if the target is far away, we can see the teapot will move around while the camera movies, which is not right since the the teapot should be still relative to the image target.\r\n![screenshot_20160426-164157](https://cloud.githubusercontent.com/assets/8716430/14837601/b280bf1e-0bce-11e6-9bf1-3679a1d5f974.png)\r\n"}}