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A Two‐Pass Hardware‐Based Method for Hierarchical Radiosity
Author(s) -
Martín I.,
Pueyo X.,
Tost D.
Publication year - 1998
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/1467-8659.00263
Subject(s) - radiosity (computer graphics) , computer science , global illumination , pixel , overhead (engineering) , graphics hardware , computation , computer graphics (images) , graphics , computer vision , artificial intelligence , algorithm , rendering (computer graphics) , programming language
Finite elements methods for radiosity are aimed at computing global illumination solutions efficiently. However these methods are not suitable for obtaining high quality images due to the lack of error control. Two‐pass methods allow to achieve that level of quality computing illumination at each pixel and thus introducing a high computing overhead. We present a two‐pass method for radiosity that allows to produce high quality images avoiding most of the per‐pixel computations. The method computes a coarse hierarchical radiosity solution and then performs a second pass using current graphics hardware accelerators to generate illumination as high definition textures.