Efficient methods for fast shading
Репозитарій Вінницького Національного Технічного Університету
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Efficient methods for fast shading
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| Creator |
Romanyuk, Alexander
Hast, Anders Lyashenko, Yuri Романюк, О. Н. Ляшенко, Ю. |
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| Subject |
shading
fast shading BRDF approximation |
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| Description |
The new approach for accelerated diffuse color computation according to the Phong method is proposed for shading 3D objects. The peculiarity of this approach lies in the synchronous hardware determination of two points at the scanline. For this approach the new approximation formula is used for normalization of normal vectors. The adaptive method for shading is efficient, in which two different illumination models are used depending on availability of highlight within the triangle. The increase of performance is possible when determining whether there are highlights within the triangle and then using the illumination model that considers specular color, and in all the other cases using the simple model, which is considerably faster. The method for detecting an actual intersection of the edge by the highlight or its detection within a triangle is proposed. Considering, that highlight on the surface of graphic objects occupies a tiny area the adaptive approach allows an essential increase of performance for shading. Not only problems dealt with adaptive usage of illumination models are highlighted but also the methods for shading. At the same time surface curvature is considered and level of specular and diffuse light. On devices without battery consuming and specialized hardware for rendering, it is important to improve the speed and quality so that these methods are suitable for real-time rendering. Furthermore such algorithms are needed on the coming multicore architectures. We show how the methods by Gouraud and Phong, the commonly most used methods for shading, can be improved and made faster for both software rendering as well as simple low energy consuming hardware implementations. Moreover, this paper summarizes the authors’ achievements in increasing shading speed and performance and a Bidirectional Reflectance Distribution Function is simplified for faster computing and hardware implementation. |
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| Date |
2018-11-05T05:39:13Z
2018-11-05T05:39:13Z 2008 |
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| Type |
Article
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| Identifier |
Romanyuk, Alexander Efficient methods for fast shading [Text] / A. Romanyuk, A. Hast, Yu. Lyashenko // Advances in Electrical and Computer Engineering. – 2008. – Vol. 8, № 2. – P. 82-85.
http://ir.lib.vntu.edu.ua//handle/123456789/22882 004.925.3 10.4316/AECE.2008.02015 |
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| Language |
en_US
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| Relation |
Advances in Electrical and Computer Engineering. Vol. 8, № 2 : 82-85.
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| Format |
application/pdf
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| Publisher |
Stefan cel Mare University of Suceava |
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