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Authors: Raquel Concheiro 1 ; Margarita Amor 1 ; Montserrat Bóo 2 and Emilio J. Padrón 1

Affiliations: 1 Universidade da Coruña, Spain ; 2 Universidade de Santiago de Compostela, Spain

Keyword(s): Bézier Surfaces, Adaptive Tessellation, GPU, Real-Time Rendering.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Geometry and Modeling ; Real-Time Rendering ; Rendering ; Surface Modeling ; Systems and Software Architectures for Rendering

Abstract: Rendering of B\'ezier surfaces is currently performed by tessellating the model on the GPU and rendering the highly detailed triangle mesh. Whereas non-adaptive strategies apply the same tessellation pattern to the whole surface resulting in a uniform tessellation of the patch, adaptive approaches make it possible to reduce the number of triangles generated without a loss of quality. However, the most usual approaches to adaptive tessellation have little flexibility and do redundant computations and memory accesses, as each sample is independently evaluated in the Domain Shader of the DirectX11 pipeline. In this paper an adaptive tessellation technique based on the exploitation of the spatial coherence (ESC) data within each surface is presented. The GPU implementation of this technique is simple and efficient and, as consequence, the tessellation of complex models can be performed in real-time. The analysis of the GPU performance and limitations for different adaptive degree of the tessellation performed suggest innovations in future graphics card generations for supporting a larger degree of adaptivity without a penalty. (More)


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Paper citation in several formats:
Concheiro, R.; Amor, M.; Bóo, M. and Padrón, E. (2014). Free Adaptive Tessellation Strategy of Bézier Surfaces. In Proceedings of the 9th International Conference on Computer Graphics Theory and Applications - GRAPP, (VISIGRAPP 2014) ISBN 978-989-758-002-4; ISSN 2184-4321, pages 255-263. DOI: 10.5220/0004684202550263

author={Raquel Concheiro. and Margarita Amor. and Montserrat Bóo. and Emilio J. Padrón.},
title={Free Adaptive Tessellation Strategy of Bézier Surfaces},
booktitle={Proceedings of the 9th International Conference on Computer Graphics Theory and Applications - GRAPP, (VISIGRAPP 2014)},


JO - Proceedings of the 9th International Conference on Computer Graphics Theory and Applications - GRAPP, (VISIGRAPP 2014)
TI - Free Adaptive Tessellation Strategy of Bézier Surfaces
SN - 978-989-758-002-4
IS - 2184-4321
AU - Concheiro, R.
AU - Amor, M.
AU - Bóo, M.
AU - Padrón, E.
PY - 2014
SP - 255
EP - 263
DO - 10.5220/0004684202550263