irradiance map and glossiness

[Long John]

why is the glossiness calculation not stored with the irradiance map when saved?

[vlado]

Because glossiness is view-dependent, whereas the samples in the irradiance map are not (they look the same no matter from which direction you look at them). Calculating and storing information for glossy stuff so that you can view it from any angle would be slow and very memory-consuming.

Best regards,
Vlado

[Long John]

ok, but when you do stills and and render the irradiance map it would be great if you don´t have to render the glossiness again when you load the saved irradiance map again.

[cocolas]

ok, but when you do stills and and render the irradiance map it would be great if you don´t have to render the glossiness again when you load the saved irradiance map again.

yep...I keep running into that over and over again.....a different option would be nice.


paul.

[DaForce]

if i remember correctly they were originally tied togeher, but so many people complained that they want more control over glossies. So they became seperate passes.

[cocolas]

if i remember correctly they were originally tied togeher, but so many people complained that they want more control over glossies. So they became seperate passes.

hehehe....I guess we're never happy...are we?

paul.

[DaForce]

hahahaha sure seems that way

[cocolas]

[J_Bug]

if i remember correctly they were originally tied togeher, but so many people complained that they want more control over glossies. So they became seperate passes.

You're partially correct but I don't think it was ever actually stored with a saved map (just calculated in the same passes and held in memory) due to what Vlado's described.

hehehe....I guess we're never happy...are we?

paul.

True

--Jon