Abstract
Among the many things you learned in the last chapter, there are the three rules your implemented BRDFs need to follow In order to be considered physically based. One way to put this knowledge into practice is to review the custom Phong surface shader, to find whether it breaks those rules. The shader followed the original formulation of Phong, which is fairly old, so it's quite likely.
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© 2018 Claudia Doppioslash
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Doppioslash, C. (2018). Making a Shader Physically Based. In: Physically Based Shader Development for Unity 2017. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-3309-2_9
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DOI: https://doi.org/10.1007/978-1-4842-3309-2_9
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Publisher Name: Apress, Berkeley, CA
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Online ISBN: 978-1-4842-3309-2
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