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Fresnel Equations Considered Harmful
(The Eurographics Association, 2019)
Microfacet shading models in film and game production have long used a simple approximation to the Fresnel equations, published by Schlick in 1994. Recently a growing number of film studios have transitioned to using the ...
What is the Reddening Effect and does it really exist?
(The Eurographics Association, 2019)
The simulation of light-matter interaction is a major challenge in computer graphics. Particularly challenging is the modelling of light-matter interaction of rough surfaces, which contain several different scales of ...
Rendering Transparent Materials with a Complex Refractive Index: Semi-conductor and Conductor Thin Layers
(The Eurographics Association, 2019)
During physical simulation of light transport, we separate materials between conductors and dielectrics. The former have a complex refractive index and are treated as opaque, the latter a real one and are treated as ...