Journal
COMPUTER GRAPHICS FORUM
Volume 37, Issue 4, Pages 167-176Publisher
WILEY
DOI: 10.1111/cgf.13484
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Funding
- Global Frontier RD program (NRF) [2018M3A6A3058649]
- ITRC program [IITP-2018-2016-0-00312]
- Korea Government
- VIDI NextView
- NWO Vernieuwingsimpuls
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Far-field diffraction can be evaluated using the Discrete Fourier Transform (DFT) in image space but it is costly due to its dense sampling. We propose a technique based on a closed-form solution of the continuous Fourier transform for simple vector primitives (quads) and propose a hierarchical and progressive evaluation to achieve real-time performance. Our method is able to simulate diffraction effects in optical systems and can handle varying visibility due to dynamic light sources. Furthermore, it seamlessly extends to near-field diffraction. We show the benefit of our solution in various applications, including realistic real-time glare and bloom rendering.
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