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Tesselation of Trimmed NURBS Surfaces using Multipass Shader Algorithms on the GPU

Geiger, Mark (2015) Tesselation of Trimmed NURBS Surfaces using Multipass Shader Algorithms on the GPU. Bachelor's, Duale Hochschule Baden-Württemberg.

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Abstract

In Computer Aided Design (CAD) 3D objects are often represented in form of trimmed NURBS surfaces. However, the rendering of NURBS surfaces is not directly supported by common graphics hardware. Special tessellation and trimming algorithms are required to convert the parametric NURBS surfaces into a polygonized form so that the GPU can properly render the NURBS surfaces. This thesis describes the implementation and further analysis on a fast and efficient GPU based rendering algorithm for trimmed NURBS surfaces presented by Michael Guthe. The algorithm uses texture based trimming methods and is using the GPU to evaluate NUBRS surfaces. To further optimize the algorithm, a detailed analysis of the algorithm is shown. The bottlenecks of the algorithm are illustrated and further improvements to counter the found bottlenecks are presented. The algorithm is evaluated and reviewed to identify, if it can be used to visualize high detailed aircraft models that are created by the geometry library TiGL. Compared to conventional algorithms, the presented tessellation and trimming algorithm could improve the performance and visual appearance of rendered aircraft models.

Item URL in elib:https://elib.dlr.de/100596/
Document Type:Thesis (Bachelor's)
Title:Tesselation of Trimmed NURBS Surfaces using Multipass Shader Algorithms on the GPU
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Geiger, Markmark.geiger (at) dlr.deUNSPECIFIED
Date:20 September 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:93
Status:Unpublished
Keywords:GPU, trimmed NURBS, shader, OpenGL, CAD, rendering
Institution:Duale Hochschule Baden-Württemberg
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben SISTEC
Location: Köln-Porz
Institutes and Institutions:Institut of Simulation and Software Technology > Distributed Systems and Component Software
Deposited By: Siggel, Dr. Martin
Deposited On:09 Dec 2015 16:19
Last Modified:31 Jul 2019 19:57

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