Interactive rendering of NURBS surfaces
Concheiro, Raquel ; Amor, Margarita ; Padron, Emilio J. and Doggett, Michael LU
(2014)
In Computer-Aided Design
56.
p.34-44
- Abstract
- NURBS (Non-uniform rational B-splines) surfaces are one of the most useful primitives employed for high quality modeling in CAD/CAM tools and graphics software. Since direct evaluation of NURBS surfaces on the GPU is a highly complex task, the usual approach for rendering NURBS is to perform the conversion into Bezier surfaces on the CPU, and then evaluate and tessellate them on the GPU. In this paper we present a new proposal for rendering NURBS surfaces directly on the GPU in order to achieve interactive and real-time rendering. Our proposal, Rendering Pipeline for NURBS Surfaces (RPNS), is based on a new primitive KSQuad that uses a regular and flexible processing of NURBS surfaces, while maintaining their main geometric properties to... (More)
- NURBS (Non-uniform rational B-splines) surfaces are one of the most useful primitives employed for high quality modeling in CAD/CAM tools and graphics software. Since direct evaluation of NURBS surfaces on the GPU is a highly complex task, the usual approach for rendering NURBS is to perform the conversion into Bezier surfaces on the CPU, and then evaluate and tessellate them on the GPU. In this paper we present a new proposal for rendering NURBS surfaces directly on the GPU in order to achieve interactive and real-time rendering. Our proposal, Rendering Pipeline for NURBS Surfaces (RPNS), is based on a new primitive KSQuad that uses a regular and flexible processing of NURBS surfaces, while maintaining their main geometric properties to achieve real-time rendering. RPNS performs an efficient adaptive discretization to fine tune the density of primitives needed to avoid cracks and holes in the final image, applying an efficient non-recursive evaluation of the basis function on the GPU. An implementation of RPNS using current GPUs is presented, achieving real-time rendering rates of complex parametric models. Our experimental tests show a performance several orders of magnitude higher than traditional approximations based on NURBS to Bezier conversion. (C) 2014 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4648804
- author
- Concheiro, Raquel
; Amor, Margarita
; Padron, Emilio J.
and Doggett, Michael
LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- NURBS surface, Rendering pipeline, Interactive rendering
- in
- Computer-Aided Design
- volume
- 56
- pages
- 34 - 44
- publisher
- Elsevier
- external identifiers
-
- wos:000340985900004
- scopus:84903852749
- ISSN
- 0010-4485
- DOI
- 10.1016/j.cad.2014.06.005
- language
- English
- LU publication?
- yes
- id
- 86b6829f-12b0-40ca-9ba8-a541c3556a5e (old id 4648804)
- date added to LUP
- 2016-04-01 13:04:58
- date last changed
- 2022-04-21 19:39:50
@article{86b6829f-12b0-40ca-9ba8-a541c3556a5e,
abstract = {{NURBS (Non-uniform rational B-splines) surfaces are one of the most useful primitives employed for high quality modeling in CAD/CAM tools and graphics software. Since direct evaluation of NURBS surfaces on the GPU is a highly complex task, the usual approach for rendering NURBS is to perform the conversion into Bezier surfaces on the CPU, and then evaluate and tessellate them on the GPU. In this paper we present a new proposal for rendering NURBS surfaces directly on the GPU in order to achieve interactive and real-time rendering. Our proposal, Rendering Pipeline for NURBS Surfaces (RPNS), is based on a new primitive KSQuad that uses a regular and flexible processing of NURBS surfaces, while maintaining their main geometric properties to achieve real-time rendering. RPNS performs an efficient adaptive discretization to fine tune the density of primitives needed to avoid cracks and holes in the final image, applying an efficient non-recursive evaluation of the basis function on the GPU. An implementation of RPNS using current GPUs is presented, achieving real-time rendering rates of complex parametric models. Our experimental tests show a performance several orders of magnitude higher than traditional approximations based on NURBS to Bezier conversion. (C) 2014 Elsevier Ltd. All rights reserved.}},
author = {{Concheiro, Raquel and Amor, Margarita and Padron, Emilio J. and Doggett, Michael}},
issn = {{0010-4485}},
keywords = {{NURBS surface; Rendering pipeline; Interactive rendering}},
language = {{eng}},
pages = {{34--44}},
publisher = {{Elsevier}},
series = {{Computer-Aided Design}},
title = {{Interactive rendering of NURBS surfaces}},
url = {{http://dx.doi.org/10.1016/j.cad.2014.06.005}},
doi = {{10.1016/j.cad.2014.06.005}},
volume = {{56}},
year = {{2014}},
}