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29-09-2002, 04:24 PM   #1
undseth
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Global Illumination and lightning
I want to make some realistic renderings with GI but now i wonder how to set up for proper lightning. (yes i have tried)

I want to use the directional light for GI, but as i do not have 100% enclosing (top/sides(bottom) and reflecting surrondings, i only get GI light on parts of the model, which makes this light too bright in contrast to the direct light from the directional light.

So it looks that i need more direct light, but i thought the best would be to ligth the whole model up with GI for a realistic result.

If I make a sphere around my model the light from the directional light wont get through the sphere.

Please give me some advice.
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29-09-2002, 04:41 PM   #2
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you can download a mel from highend3d called GIJOE.. use the max lights which if i'm not mistaken it should be 128lights.. edit the intencity to around 0.1 and then make one directional light with a higher value intencity, like 1.. depends on the scene you're workin' on
that should give you a nice GI effect.. :p
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29-09-2002, 05:10 PM   #3
undseth
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I will post some pics here when i finish them.
And... i have been thinking, that maybe I'm not used to analyse GI pics. I took a white object and moved it onto a white sheet of paper and i was suprised to see how much the reflective light lit up parts of the paper. Hehe, it just didn't seem right in my rendering.
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29-09-2002, 05:15 PM   #4
undseth
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How do i post pictures here ???
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29-09-2002, 05:18 PM   #5
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either with the img tag.. or just attached the file when you're in the reply page.. its under your text space.. but make sure it's under 200k i think.. :p
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29-09-2002, 05:29 PM   #6
undseth
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I dont get this, isnt it possible to upload pics?

My 03.jpg is 4kb big!
Whats the problem here?
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29-09-2002, 05:31 PM   #7
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ow i should have mentioned this.. the img tag is if you want to link pics from a server, online.. and the attach is to uplaod it to the SM servers..
so in your case you should attach it.. hehe. sorry.. :p
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29-09-2002, 05:34 PM   #8
undseth
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Hmm
The uploaded file is not a valid GIF or JPG file. Please ensure that it is and try again.


? This is a standard jpg file (03.jpg) ?

I wrote something in the txt field and klicked the attach button, and chose the correct path, but it gives me the error-message stated on top.

Last edited by undseth; 29-09-2002 at 05:38 PM.
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29-09-2002, 05:37 PM   #9
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send to Kevin@simplymaya.co.uk I will make sure it goes on mate
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29-09-2002, 05:38 PM   #10
Roman
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hmm.. not sure m8.. try again..
maybe pass it through photoshop and save it again as a jpg..?!

edit: lol.. or just send it to kev..
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29-09-2002, 05:48 PM   #11
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heres undseth's image
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29-09-2002, 06:16 PM   #12
undseth
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I must confess that i had added the big plate after my first post here. So the rendering do look better now, and besides, everything is not supposed to be white, so im confident in making some real pics.

But should have added some bluish arealight of sorts.
I Could also have done this in FinalGathering, but i just dont have the patience to wait for the slow thing.

But I'll try to combine GI and FG, and get back to this post with a more exiting picture.
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29-09-2002, 07:03 PM   #13
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I have botherd Kevin again with a new pic.
(I hope he posts that one too)

This (coming pic) is a combination of GI and FG.

The outer rendering is GI.
The inner rendering is Final Gathering and GI.

The two shadings differ greatly (light-energy is lowered very much, when including the FG settings to GI).

The FG shading is nice, but has one strange thing, and that is the too-bright(?)-area under the top slab, it has no shadow at all it seems.
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Last edited by undseth; 29-09-2002 at 07:06 PM.
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29-09-2002, 08:04 PM   #14
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here is his second image
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30-09-2002, 04:56 PM   #15
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I am well into making this house of mine, It'll be done in a few days i guess.

I have no drawings of this house from my studies, so I'm designing the project from memory.
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