Improved Volume Scattering

Publication Type:

Conference Paper

Authors:

Source:

Computer Graphics International (CGI), Springer, Cham., Volume Advances in Computer Graphics. CGI 2019. Lecture Notes in Computer Science, vol. 11542, Calgary, AB (2019)

ISBN:

978-3-030-22514-8

URL:

https://doi.org/10.1007/978-3-030-22514-8_6

Abstract:

This paper examines two approaches to improve the realism of volume scattering functions. The first uses a convex combination of multiple Henyey-Greenstein distributions to approximate a more complicated scattering distribution, while the second allows negative coefficients. The former is already supported in some renderers, the latter is not and carries a significant performance penalty. Chromatic scattering is also explored, and found to be beneficial in some circumstances. Source code is publicly available under an open-source license.