MistyLaraCarrara opened this issue on Jan 07, 2014 · 15 posts
MistyLaraCarrara posted Tue, 07 January 2014 at 8:55 AM
is Firefly close to caustics and path-tracing?
i taking days off from the day job to work on my skill level,
but can't decide which direction to go in?
what* is* global illumination?
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26Fahrenheit posted Tue, 07 January 2014 at 9:03 AM
simply said its the light that IS..
like when the sun does not shine directly into the room ..there is still light in the room ..
So global light is everywhere unless your in a pitch darkroom with no light or wndows ..
but still even then there is a kind of global light .. but verry little 
I hope this is a good enough answer
Chris
26Fahrenheit posted Tue, 07 January 2014 at 9:04 AM
Btw you can see GI at its best with a white prop and no texture ..
render such a thing with and whitout GI and you will see the diffence
Chris
WandW posted Tue, 07 January 2014 at 9:11 AM
"what is global illumination?"
Indirect lighting handles it in Poser...
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The Wisdom of bagginsbill:
"Oh - the manual says that? I have never read the manual - this must be why."
MistyLaraCarrara posted Tue, 07 January 2014 at 9:20 AM
is there a light 'source' with GI?
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26Fahrenheit posted Tue, 07 January 2014 at 9:25 AM
Quote - is there a light 'source' with GI?
In the 3d world there must be light source with GI settings ..
In the real world its the SUN that gives GI to the world..
In poser its like said above the INDIRECT lighting that is GI
MistyLaraCarrara posted Tue, 07 January 2014 at 9:58 AM
but poser IDL doesn't give path-tracing.
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WandW posted Tue, 07 January 2014 at 11:39 AM
Quote - but poser IDL doesn't give path-tracing.
Not true-path tracing, because Firefly is a biased renderer. You can disable irradiance caching, but at the expense of render time...
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The Wisdom of bagginsbill:
"Oh - the manual says that? I have never read the manual - this must be why."
MistyLaraCarrara posted Tue, 07 January 2014 at 11:46 AM
i crank my irradiance up to a 100.
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hborre posted Tue, 07 January 2014 at 12:49 PM
Which will increase your render time tremendously.
MistyLaraCarrara posted Tue, 07 January 2014 at 1:16 PM
yeah. i should try some comparison renders.
i'm gonna be on pp12 for quite a while yet.
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MistyLaraCarrara posted Wed, 08 January 2014 at 5:43 AM
does being a biased renderer mean poser will never have path tracing?
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prixat posted Wed, 08 January 2014 at 7:15 AM
On its own, 'Path Tracing' is just another method of calculating GI, like 'Irradiance Caching' or Photon Mapping'.
3Delight or Cinema's Physical Renderer, for example, are both still biased renderers.
(You also need physically accurate cameras, physically accurate lights and physically accurate materials for unbiased rendering.)
regards
prixat
WandW posted Wed, 08 January 2014 at 7:56 AM
If you want to play with an unbiased renderer on the cheap, there is free Pose2Lux...
http://snarlygribbly.org/3d/forum/viewforum.php?f=9
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The Wisdom of bagginsbill:
"Oh - the manual says that? I have never read the manual - this must be why."
RobynsVeil posted Sat, 11 January 2014 at 4:43 AM
In addition to LuxRender, Blender has an unbiased renderer: Cycles. After you've watched this video:
http://www.youtube.com/watch?v=LyMZ8JG9Yqs
...pinch yourself and try to remember that Blender is indeed a free download. Blender GI is pretty amazing. Even though it is still faking it, even the faked caustics looks quite good:
http://www.youtube.com/watch?v=ALlP3GSrmK4
Forgot to mention: Blender takes advantage of the GPU of your NVidia graphics card. At this point, GPU-rendering requires a CUDA-ready NVidia graphics card. Don't see that changing anytime soon, but I suppose anything can happen.
Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2
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