Environment mapping Flashcards
(6 cards)
1
Q
What are environment maps?
A
A texture which represents the environment of a 3D object and they are often saved as cube or spherical maps
2
Q
The higher the roughness value…
A
…the rougher the surface
3
Q
The higher the specular coefficient…
A
…the more light is reflected
4
Q
What to know about IOR?
A
The IOR of air is approximately 1, The IOR is actually an imaginary number and The IOR of glass is approximately between 1.45 and 2.14
5
Q
How to calculate the reflection vector of V on the surface normal N (assuming that V points towards the surface)?
A
R=V−2N(N⋅V)
6
Q
In this learning module rough reflections are achieved in real-time by …
A
using the automatically generated mipmaps of the cubemap.
