why can't poser do GI?  the idl light emitters won't work for gi?

GI includes poser IDL.  poser uses GIvariables when IDL active.

is ibl also considered gi?

Yes - your original question is like asking if drinks are better than apple juice. Apple juice is a kind of drink, so drinks aren't better.

IDL is a kind of GI, so GI isn't better.

http://blog.digitaltutors.com/understanding-global-illumination/

"Global illumination is the name of a process that simulates indirect lighting, like light bouncing and color bleeding."

Poser IDL (with or without IC) is one tactic to implement global illumination. There are many others.

color bleeding is a caustics thing.

thanks. 
trying to clear up some miscomprehensions i haz, at the risk of posting nonsense.

i luv light studies.  got that cornell box around here somewhere.  next i want to find that lil dragon everybody uses.

i'm comparing firefly to the carrara renderer. 

huhh.  we didn't make it on their sw list.  no poser, no poser gamedev, carrara, or ds. 

lol blender is on there ! and its on special offer this week ............. all you pay for is the aspirins rofl

Final Cut Pro renders? Oh, wait, that's not a list of renderers, is it? I'm pretty sure HTML doesn't render.

found the chinese dragon and cornell box and other nifty stuff

http://graphics.cs.williams.edu/data/meshes.xml#10

would someone want to start an Ultimate Lighting Study thread?  

maybe DT ain't got poser category cuz it's still easiest known 3D software!

p.s. I prefer sponza atrium scene to demonstrate poser GI.

Global Illumination: any lighting that involves more than just the surface being shaded. The strict interpolation already counts shadows as a global illumination effect, since that requires the interaction of other objects in the scene. Depending on who you ask and what software you use, global illumination may or may not include diffuse<->diffuse, specular<->diffuse or specular<->specular light transports.

Indirect diffuse light was the description we chose in FireFly to make sure it's an accurate description of what it does without raising unrealistic expectations. It calculates diffuse<->diffuse light transport through path tracing and irradiance caching (which can be turned off), but does not calculate caustic light paths which would require light transport through specular paths.

"color bleeding is a caustics thing."

Nope. As stewer just pointed out, Poser doesn't do caustics, yet it does do color bleeding. Therefore, color bleeding must not be a caustic thing.

Observe:

Now if you don't perceive much red on those pawns, let me point out that your brain is filtering it out. You see the red wall, and you expect to see some of that bounced red on the nearby pawn. Your brain does automatic and area-selective white balancing in this case. You perceive the pawn as being whiter than it really is in the picture.

Instead - let's make the red wall invisible to camera, but still contribute to IDL - now what do you perceive?

I just confirmed that this crapola new forum software is recompressing my images - the quality of what you're seeing in my last post is WAY worse than what I produced and uploaded.

I'm about up-to-here with crap like this. I made a high-quality render that took several minutes, and the damn forum trashed it down to 24KB and it looks like shit.

I'm wasting my time here.

I also got unsubscribed - had to resubscribe myself. WTF? WTF? WTF? WTF?

Still a very cool example render, BB. Your point was succinctly made.

Hey Baggins, just don't try copying, pasting, or undoing anything either, you might be in for a bit of a shock if you do!

I also got unsubscribed - had to resubscribe myself. WTF? WTF? WTF? WTF?

It randomly unchecks the Notify box when you reply; you have to manually check it.  I also can't paste into the compsition window without it replacing all of the text, so I need to compose anything with links in a text editor and paste the whole block in...... >:(

BB, lemme do quik chek on forum recompression, as there may be way round it.  upload 750 KB png to forum:

then download it: now 741 KB.  hence their software may compress jpeg, but not signif. compress png.

site soft. may recompress or convert to lo-qual. jpeg according to some maint. script sched., so I check later.

caustics and color bleeding are different things?  

thanks!!   yes, i can see reddish on the pawn in second image.  and that comes only with the IDL on

my head is a little essplody at how wrong i'd been understanding.

"maybe DT ain't got poser category cuz it's still easiest known 3D software!"

Digital Tutors Offers Paid training video like Gnomon,Lynda.com &others

I personally would never pay someone to teach me a software program.

One can learn All one needs to know about a program from an active online user community (like this one), along with the plethora of FREE tutorial videos to be found  on youtube,uploaded by enthusiastic users.

question of the day,

does idl light shine through translucent obj?

would a tighter dome make the idl calcs faster?

whisky tango foxtrot, can't cut & paste text?  renderosity i'se giving up on you

You can cut n paste text. But you have to use ctrl-x and ctrl-v. (It's actually been this way at Rendo for years.)

IDL calcs faster w/envsphere than w/o, but dome size not critical in terrestrial terms.  BB chose good size.

also noticed that "copy-n-paste" now deletes all msg txt and fails to paste.

ctrl v doesn't work for me.  deletes all msg txt for me too.  chrome or safari.

the 's' in fresnel is silent S !!!

question of the day,

does idl light shine through translucent obj?

would a tighter dome make the idl calcs faster?

whisky tango foxtrot, can't cut & paste text?  renderosity i'se giving up on you

IDL respects transparency maps, and therefor opacity.  If it didn't, then all the transmapped hair out there would be useless with it.  Also eyes would render black.

translucent isn't a different math from opacity? 

translucent is only supposed to let the light through, was my understanding.

can't entirely trust the Diffuse. 

in the past, BB has mentioned Diffuse, and Alt Diffuse are different calculations. 

i wonder if this is true for poser also?  

"Subsurface scattering varies depending on the size of the objects to which it is applied"

@everyone I have bumped up the quality of our image processor for the forums. On image upload, the file size will still be compressed but will not lose image quality. Also, keep in mind that the images will also be responsive, therefore, might not display at the exact image size resulting in pixelation. To fix simply right-click the image and open in a new window to see the full image.

thx, BW!

i wonder if this is true for poser also?  

"Subsurface scattering varies depending on the size of the objects to which it is applied"

It is.

was reading renderman pro has pathtracing.

iirc pathtracing is a gi thing