Resolution-independent surface rendering using programmable...

Details Resolution-independent surface rendering using programmable... Resolution-independent surface rendering using programmable...

2005-10-27

2008-12-16

Nguyen, Kimbinh T (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Adjusting level of detail

C345S419000, C345S420000

Reexamination Certificate

active

07466314

ABSTRACT:
Surfaces defined by a Bézier tetrahedron, and in particular quadric surfaces, are rendered on programmable graphics hardware. Pixels are rendered through triangular sides of the tetrahedra and locations on the shapes, as well as surface normals for lighting evaluations, are computed using pixel shader computations. Additionally, vertex shaders are used to aid interpolation over a small number of values as input to the pixel shaders. Through this, rendering of the surfaces is performed independently of viewing resolution, allowing for advanced level-of-detail management. By individually rendering tetrahedrally-defined surfaces which together form complex shapes, the complex shapes can be rendered in their entirety.

REFERENCES:
patent: 6362820 (2002-03-01), Hoppe
Bajaj et al. “Modeling with Cubic A-Patches”, ACM 1995, pp. 103-133.
Zhang et al. “3D tetrahedron ray tracing”, IEEE 2001, pp. 334-335.
Heckbert, Paul S., “The Mathematics of Quadric Surface Rendering andSOID”, New York Institute of Technology, 3-D Technical Memo 4, Jul. 13, 1984, pp. 1-21.

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