what is sh-diffuse?

[Shneedlewoodz]

by turning that to low i get a huge fps boost but there is no difference in quality?

[Fenmore]

It's basically the games way of rendering stuff. If you ever see objects that are semi-transparent with a polka dot look to them, that's SH Diffuse.

[Kaldaien]

引用自 Luxy：

by turning that to low i get a huge fps boost but there is no difference in quality?

Spherical Harmonics, it's a form of lighting that attempts to produce more physically accurate lighting than you normally get.

I literally have a Master's Degree in Computer Graphics, and I can't find a good explanation for the average person :-\ Look up Spherical Harmonics on Wikipedia, and I bet your eyes will roll into the back of your head and you'll be even more lost, lol.


I'd love to help explain this to you, but I don't think it's possible.

https://www.google.com/search?q=spherical+harmonics+diffus&source=lnms&tbm=isch

[Panic Fire]

引用自 Kaldaien：

引用自 Luxy：

by turning that to low i get a huge fps boost but there is no difference in quality?

Spherical Harmonics, it's a form of lighting that attempts to produce more physically accurate lighting than you normally get.

I literally have a Master's Degree in Computer Graphics, and I can't find a good explanation for the average person :-\ Look up Spherical Harmonics on Wikipedia, and I bet your eyes will roll into the back of your head and you'll be even more lost, lol.


I'd love to help explain this to you, but I don't think it's possible.

https://www.google.com/search?q=spherical+harmonics+diffus&source=lnms&tbm=isch

Glad to know Kaldaien is MH it up.

[Jin]

The 3 biggest settings to increase FPS for me were

- Foliage Sway: (trees and leafs swing around) pretty pointless imo with no visual quality decrease if you turn it off.

- SH Diffuse: High impact FPS, low impact visual quality as well, you have to really focus on the background to see a difference.

- Volumetric Fog thingy: Less FPS and less visual quality if turned on. Always turn off imo.

I have everything maxed out except those 3 and the game runs and looks amazing at 80-100fps.

[Fenmore]

引用自 Jin：

The 3 biggest settings to increase FPS for me were

- Foliage Sway: (trees and leafs swing around) pretty pointless imo with no visual quality decrease if you turn it off.

- SH Diffuse: High impact FPS, low impact visual quality as well, you have to really focus on the background to see a difference.

- Volumetric Fog thingy: Less FPS and less visual quality if turned on. Always turn off imo.

I have everything maxed out except those 3 and the game runs and looks amazing at 80-100fps.

I disagree heavily with the Foliage Sway. Makes the game look dead if you turn it off, really makes it feel less alive.

[Jin]

引用自 Kingdom：

引用自 Jin：

The 3 biggest settings to increase FPS for me were

- Foliage Sway: (trees and leafs swing around) pretty pointless imo with no visual quality decrease if you turn it off.

- SH Diffuse: High impact FPS, low impact visual quality as well, you have to really focus on the background to see a difference.

- Volumetric Fog thingy: Less FPS and less visual quality if turned on. Always turn off imo.

I have everything maxed out except those 3 and the game runs and looks amazing at 80-100fps.

I disagree heavily with the Foliage Sway. Makes the game look dead if you turn it off, really makes it feel less alive.

Still doesn't decrease visual quality, it's fluff effect for immersion. You get used to it fast and I gladly trade 10-15fps for a little immersion in a grinder, it's not a story game after all.

[Kaldaien]

Yeah, foliage sway is not a performance option. It doesn't change the amount of pixels filled each frame, it just moves them around and it's purely an asthetic choice.

I do think there's one potential for image quality to change with foliage sway though, and that's on the issue of temporal aliasing. There will be slightly less of this if you don't let those transparent textures move back and fro :)

[GATOxVoS]

So does the SH Diffuse option then change the resolution of the lighting effect when cast, or some other metric, like the amount/type of objects the SH diffuse is performed upon?

[Drifter]

引用自 Kaldaien：

引用自 Luxy：

by turning that to low i get a huge fps boost but there is no difference in quality?

Spherical Harmonics, it's a form of lighting that attempts to produce more physically accurate lighting than you normally get.

I literally have a Master's Degree in Computer Graphics, and I can't find a good explanation for the average person :-\ Look up Spherical Harmonics on Wikipedia, and I bet your eyes will roll into the back of your head and you'll be even more lost, lol.


I'd love to help explain this to you, but I don't think it's possible.

https://www.google.com/search?q=spherical+harmonics+diffus&source=lnms&tbm=isch

I'm tired of all this crap, it's irrelevant to me now after having been butchered by the medical profession. All that learning about science for ♥♥♥♥♥♥♥ nothing.

But if you really know the subject matter you can always explain it simple terms without the math.

"The aim of science is to make difficult things understandable in a simpler way"

Something like, it's an equation used to solve for diffuse light reflection - light hitting something and spreading out in all directions.

The rendering equation is light hits a surface = all the light that spread outs from it.

Spherical harmonics can solve for this equation, as they are orthogonal and have a property which is similar - movement in direction x = movement in direction y.

The equation has a number of solutions corresponding to an integer. The more solutions you use, the more accurately it represents diffuse light.

https://web.archive.org/web/20030521145638/http://www.research.scea.com/gdc2003/spherical-harmonic-lighting.pdf

Or something like that, I certainly don't know enough about it to say it simply but accurately.

[Boodz]

*looks up Spherical Harmonics*
*instant regret*

why am I punishing my self?

[(ノ°□°)ノ]

Sh diffuse Low in mhw gives you a somewhat transparent white-ish blob looking outline on stuff that light hits.
Sh diffuse high eliminates it.
You'll only sometimes notice it on Low as it doesnt always occur, but its definitely noticable.

[Kaldaien]

引用自 Drifter：

Something like, it's an equation used to solve for diffuse light reflection - light hitting something and spreading out in all directions.

The rendering equation is light hits a surface = all the light that spread outs from it.

Spherical harmonics can solve for this equation, as they are orthogonal and have a property which is similar - movement in direction x = movement in direction y.

The equation has a number of solutions corresponding to an integer. The more solutions you use, the more accurately it represents diffuse light.

https://web.archive.org/web/20030521145638/http://www.research.scea.com/gdc2003/spherical-harmonic-lighting.pdf

Or something like that, I certainly don't know enough about it to say it simply but accurately.

Because your definition doesn't say anything different than any other function plugged into a BRDF; nearly every lighting model used in games satsifies your definition.

[lampuiho]

引用自 Kaldaien：

引用自 Luxy：

by turning that to low i get a huge fps boost but there is no difference in quality?

Spherical Harmonics, it's a form of lighting that attempts to produce more physically accurate lighting than you normally get.

I literally have a Master's Degree in Computer Graphics, and I can't find a good explanation for the average person :-\ Look up Spherical Harmonics on Wikipedia, and I bet your eyes will roll into the back of your head and you'll be even more lost, lol.


I'd love to help explain this to you, but I don't think it's possible.

I haven't done anything related to that or even looked at wikipedia but by its name, I guess it basically diagonalize the light integral equation using first few orders of spherical harmonics basis functions and solve for the coefficients using this diagonalized equation.

EDIT: wait someone already mentioned it

[lampuiho]

引用自 Kaldaien：

Because your definition doesn't say anything different than any other function plugged into a BRDF; nearly every lighting model used in games satsifies your definition.

Wrong. This isn't BRDF. This has to do with radiosity (more realstic form of ambient light). I forgot the name and had to look it up thus the separate reply. It involves integral of light from infinite amount of reflections which is usually done during light baking. Infinite relfections mean it isn't possible through ray tracing or BRDF.

[Seamus]

Any particular reason you're necroing a three year old thread to try to start an argument with kaldaien?