2 questions

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arail
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2 questions

Post by arail » Tue Jun 28, 2011 2:34 pm

Playing around with Indigo demo. Very impressed considering I did nothing other than click render. But two questions - why the line of light at the point where the carpet (displaced) meets the wall and what to do about the fireflies?

Thanks in advance
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indigo TCP.jpg

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Pibuz
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Re: 2 questions

Post by Pibuz » Tue Jun 28, 2011 8:20 pm

Hi arail!

The displaced geometry is a bit tricky. Try making a group/component of your carpet, and then place it over your floor. Review a little the displacing parameters, because at the moment the approximation is too low, and you end up with a slightly bumpy surface. To have "continuous" surfaces displaced together (say a stone wall corner, eg) there are some techniques. This isn't your case, btw, because you want the carpet to be displaced. This should be easier.

Fireflies come from wrong render method maybe: try with a MLT algorithm.

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Headroom
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Re: 2 questions

Post by Headroom » Tue Jun 28, 2011 9:37 pm

+1 what Pibuz said.

You can also try a higher supersampling factor. If you used Indigo's default 2 then raise it to 3.
Also with those relatively thin, even glass structures you may want to try the glass acceleration feature to clear the noise more quickly in the transparent shadows on the wall.

arail
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Re: 2 questions

Post by arail » Wed Jun 29, 2011 1:36 am

Thanks for the replies.
I reset the scene as per your advice and left for work. Will see the results when I get back this evening.
Is this the mythological 'one button rendering app'?

Stinkie
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Re: 2 questions

Post by Stinkie » Wed Jun 29, 2011 2:09 am

No, it's not. Darn close, though.

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Headroom
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Re: 2 questions

Post by Headroom » Wed Jun 29, 2011 2:46 am

Stinkie wrote:No, it's not. Darn close, though.
+1

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munkey
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Re: 2 questions

Post by munkey » Tue Jul 05, 2011 8:56 am

Hello here's another question.

My glass material does cast shadow (100% shadow) and I don't know why. It's a "Glass" preset from the Indigo presets (0% opacity). In SU with shadows turned on it doesn't cast shadow, but in Indigo it does.
SketchUp 8 / Windows 7 x64 / Indigo 3.0.14 / i7 CPU Q720 @ 1.60 GHz / 4.00 GB RAM / NVIDIA GeForce GT 230M

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CTZn
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Re: 2 questions

Post by CTZn » Tue Jul 05, 2011 9:01 am

Check the meshes normals direction and make sure to use glass materials on volumetric panes only, not single faces.
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munkey
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Re: 2 questions

Post by munkey » Tue Jul 05, 2011 9:18 am

The faces are all facing outside (all are white) and it's not a single face, but 5 mm wide glass. Hm.
SketchUp 8 / Windows 7 x64 / Indigo 3.0.14 / i7 CPU Q720 @ 1.60 GHz / 4.00 GB RAM / NVIDIA GeForce GT 230M

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Pibuz
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Re: 2 questions

Post by Pibuz » Tue Jul 05, 2011 7:05 pm

If you want plain glass, you don't need to use the one on the database. Just set a very slight blue colour as a Sketchy material, turn the opacity to something about 5 and you're done. No complicate messing around with parameters.. :D

EDIT: sorry, I misread preset with database :lol: I must be still sleepy....
BTW, no need to use presets either, though it's still curious the glass preset doesn't work for you...

I had similar problems some time (..years?) ago when I applied the glass material to a box, and then mirrored it: the mirrored copies rendered completely black. But it was a very old SkIndigo issue, should be completely gone with the current version.

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munkey
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Re: 2 questions

Post by munkey » Wed Jul 06, 2011 12:19 am

Thanks CTZn & Pibuz, but I still can't manage it out, so I post some images.

So here's SU:

Image

and here's what I get in Indigo, it's a quick 3 minutes render.

Image

Notice the shadows (on the white wall) in SU and in Indigo, I don't want the roof to cast that shadow. On the beams there appers a little bit light through the roof, but too few. I tried to thicken the roof to 1mm but it didn't help.

Maybe u have another idea how to improve the render? The roof should look like plastic panels called "lexan" (see image below).

Image
SketchUp 8 / Windows 7 x64 / Indigo 3.0.14 / i7 CPU Q720 @ 1.60 GHz / 4.00 GB RAM / NVIDIA GeForce GT 230M

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Pibuz
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Re: 2 questions

Post by Pibuz » Wed Jul 06, 2011 1:06 am

render method: BiDir MLT?
glass acceleration ON?

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CTZn
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Re: 2 questions

Post by CTZn » Wed Jul 06, 2011 6:43 am

Yes if you are using GPU you should definitely use 3.0.12 and activate Glass Acceleration from the UI (Render Settings pane, below Render Mode).
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Pibuz
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Re: 2 questions

Post by Pibuz » Wed Jul 06, 2011 6:20 pm

Out of curiosity, are you using a glossy transparent material?

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munkey
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Re: 2 questions

Post by munkey » Sat Jul 09, 2011 4:17 am

Tracing method: BiDir MLT
Glass acceleration: ON

and the material is Specular, would be better Glossy Transparent?
SketchUp 8 / Windows 7 x64 / Indigo 3.0.14 / i7 CPU Q720 @ 1.60 GHz / 4.00 GB RAM / NVIDIA GeForce GT 230M

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