3D to stereoscopic 3D conversion

摘要

This disclosure describes techniques for modifying application program interface (API) calls in a manner that can cause a device to render native three dimensional (3D) graphics content in stereoscopic 3D. The techniques of this disclosure can be implemented in a manner where API calls themselves are modified, but the API itself and the GPU hardware are not modified. The techniques of the present disclosure include using the same viewing frustum defined by the original content to generate a left-eye image and a right-eye image and shifting the viewport offset of the left-eye image and the right-eye image.

主权项

1. A method of converting non-stereoscopic three- dimensional (3D) content to stereoscopic 3D (S3D) content, the method comprising:
intercepting an application program interface (API) call; determining from the API call, a model view projection matrix for the non-stereoscopic 3D content; shifting the model view projection matrix to generate a first modified model view projection matrix; shifting the model view projection matrix to generate a second modified model view projection matrix; based on the first modified model view projection matrix, generating left view clipping coordinates; based on the second modified model view projection matrix, generating right view clipping coordinates; based on the left view clipping coordinates, generating a left view; based on the right view clipping coordinates, generating a right view, wherein a viewing direction of the left view is parallel to a viewing direction of the right view; based on the left view and the right view, rendering an S3D image; applying a first viewport shift to the left view; and, applying a second viewport shift to the right view.