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Questions tagged [scattering]

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4
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0answers
74 views

Predicting reflectance functions from complex surfaces

There are three principal ways to obtain a BRDF. We can Derive an analytic formula using physical principles Use simulation given an assumed or measured model of the surface microgeometry Measure ...
1
vote
0answers
81 views

Adding Ozone to my sky simulation

I implemented a simulation for the colour of the sky a while ago by following the scratch a pixel tutorial: https://www.scratchapixel.com/lessons/procedural-generation-virtual-worlds/simulating-sky I ...
8
votes
1answer
344 views

How does Smith multiple scattering interact with diffuse subsurface scattering?

The Multiple Scattering Microfacet BSDFs with the Smith Model paper describes a statistical model for replacing the masking-shadowing functions in microfacet BSDFs (which account for paths with more ...
12
votes
1answer
5k views

Radiosity VS Ray tracing

Radiosity is basically what allows this: In a tutorial of Cornell University about Radiosity it is mentioned that: A ray-traced version of the image shows only the light reaching the viewer by ...
11
votes
1answer
162 views

Volumetric rendering fundamental concepts and terminology

Literature on rendering volumetric materials and effects tends to use a lot of mathematical physics terminology. Let's say that I have a decent handle on the concepts involved in surface rendering. ...