#flipcode

Hello Nick,

I'm doin' a rendering with a very bright lightbeam and it looks like,

that when I choose a very high intensity, a black spot will be

created. Some pixels turn black and if I change the intensity a bit

it will let the spot "dance". :P :D ;)

I don't know if this bug is just lightintensity related or with the

materials also. The lightcannon has a pretty reflective/glossy body,

maybe it is the culprit too. ;o)

Here some images to tell the story. Original size was 2048x1536,

resized for viewing pleasure ... :D :D :P

All images have different lightintensity settings!

This is a newer image with adjusted settings ... no bug so far.

Hope this will help you in a way, ... you've got questions? Just ask! ;)

If needed I'll try to reproduce this bug and will note the values and what not.

take care

psor

how long did indigo render for the last image?

it\'s so clean. very beatiful!

Thanx Manitwo, ... the original size is 2048x1536 and the

rendertime when this image was saved was around 36 hours

and it is still rendering. Anyway it is just a WIP ...

To see some nice dispersion and caustics I would need

approximately ... 1000 hours. :D :D :D

I\'ll post some pics in the other section if they are

ready. ;o)

nb: No pp done, just resized.

take care

psor

Great render Psor.

The last render is perfect... apart from the missing rainbow :(

Any chance u could email me the scene? (nickamy@paradise.net.nz)

It\'s pretty much the ultimate test of caustics, and a good scene to test Algorithms on.

I\'ve seen that scene at maxwellrender.com as well :)

As far as the bug goes, It\'ll be an NaN or -Inf popping up as a weighted ray radiance. The extent of the black spot is the filter splat radius of the ray. It\'s related to the screen-going-black bug.

Basically i just have to make sure to check for all nasty values like this at all relevant places :)

nik

Heya Nick,

thanx for your comment. I\'ve redone this scene as I loved the scene of Thomas An. at the

Maxwellrender forum and wanted to give it a try with Indigo. Thomas said, he rendered

about 1000 hours to get those nice caustics in his image ... well I\'ve got time. :P :D ;)

Unfortunately he deleted his image from the forum a long time ago, so the only reference

is in my head. *LOL* ;)

Would you prefer the .3ds/.xml pack and/or the 3dsmax(8) file? I could also provide

other formats if needed. But this scene would be just for your \"personal\" usage,

at least at this time. When I\'m ready with it, ... maybe I\'ll make it accessible

to all. :P :D

take care

psor

.3ds and xml pls.

Personal usage is fine.

Hello Nick,

once more this bug is having fun with me ... :D ;)

I\'ve found out that, if I use an exponent of 1000000 for the gold and silver,

the image will turn black after ~10 minutes. If I use an exp. of 100000 I get

those funny black pixels. I dunno when they appeared, I was rendering over

night ... Now I\'m rendering with an exp. of 10000. I\'m curious to see what

will happen. Hope this is somehow interesting for you. ;)

btw. I love the caustics! :P :D

take care

Oleg

[Indigo v0.3][bug #00001] - The_Black_Hole_Bug ;o)- [FIXED.V0.4]

Thanks Nick for fixing this beast! :P :D ;)

take care

psor

Haha yeah haven\'t seen it show its head for a while :)