The Vuforia native samples rely on the use of OpenGL ES (version 1.1 and 2.0) for rendering the video background as well as the 3D augmentation.
The following FAQs address the most common issues and topics on Vuforia SDK samples and the use of OpenGL ES.
How to replace the teapot 3D model:
How to rotate the teapot 3D model:
How to move a 3D model in a plane parallel to the screen (e.g. for dragging objects):
How to apply basic diffuse lighting to the 3D model:
How to add and render custom textures to your 3D model:
How to position, scale and rotate the 3D model:
How to render a (textured) rectangle on top of the target in 3D space: