Candy Apple Paint

[sprocket]

So Im attempting to make a candy apple paint, using a inner mesh with a grey car paint material, and then a glass2 shell with the colour.

I thought I was getting fireflies, so i just let it cook

this is at 10k s/pix

default.png (57.7 KiB) Viewed 682 times

[patro]

wow, nice effect love the crystalized effect.

btw... as I know Paco is working on a layered mat for Luxrender

[sprocket]

Yes that could be interesting.. and alot easier than trying to model inernal meshes

[Conz]

OT:

Why are there some error pixels around the highlight?
I saw this problem on different renderings with LuxRender. IMHO it's a problem with the tonemapping. If you tonemap the image with qtpfsgui, then there are no such problems.
In this rendering the pixels are very strong, here an zoom in on the highlight:


Could this be fixed in Lux tonemapper?

[patro]

It's a filreflies... that need more time get rid on it!

[Conz]

It's a filreflies... that need more time get rid on it!

I don't think so. IMHO it should be no different result there, with an external tonemapper, in the case of fireflies. I think it's a bug in the tonemapper.
And sprocket has rendered it for 10k s/pix. How many samples do you think would be enought?

[patro]

you are right about the time
you are also right about the tonemapper behavior(sometimes).... but it seams a fireflies.
he could try to re-render with fireflies rejection.
btw sometimes fireflies encrease instead to decrease.

[Dade]

It is just a standard behaviour of Mitchell filter, you can avoid the problem by tuning parameters or switching to a Gaussian filter.

[patro]

thanks Dade.... good to know.
I will re-render a scene full of fireflies.

[Conz]

It is just a standard behaviour of Mitchell filter, you can avoid the problem by tuning parameters or switching to a Gaussian filter.

Ah, ok. Thank you, Dade. Good to know.