Huh ??


Page 1 of 1
 
 

Post Huh ??

#1  Nik 20 Aug 2021 15:01

So I was house-training a budget work-lamp I'd found on CGT.
https://www.cgtrader.com/3d-models/...85-79976b11720d

It included a nice 4k texture map for body & LEDs, with a separate material zone for the front glass, to be set almost transparent.

So I loaded the map into free Irfan View, painted all but the LED zone black, re-saved as an ambiance mask.

Looked okay until I dialled up the ambiance to ~99, at which point a patch on top of the case lit.

Huh ? WTF ?? That's not right...

An exasperated hour of re-mapping and sundry iterations later, I came back to that texture mask and played a hunch. I 'inverted' its colours. Yeah, sorta-diagonal from the LEDs' now-black rectangle, there was a pale grey smudge on the white field. A very pale grey smudge which, before inversion was, to the eye, indistinguishable from black...

Gotcha.

Re-painted, the mask now played nice.

I don't know how that patch slipped through, but lesson learned...
 



 
Last edited by Nik on 20 Aug 2021 15:04; edited 1 time in total 
avatar
uk.png Nik Gender: Male
Power User
Power User
Life + 1
Life + 1
 
Warnings: 1 
Joined: December 2003
Posts: 664
Tomatoes 5330
Lemons 3432
hearts 65

  • Back to top Page bottom
 

Post Re: Huh ??

#2  Nik 20 Aug 2021 17:05

Not a brilliant render, but a useful test of the super-ambiance in action.

Superfly, 128 pixel-samples, an hour on 'Box'...
 



 
Last edited by Nik on 20 Aug 2021 17:08; edited 1 time in total 
avatar
uk.png Nik Gender: Male
Power User
Power User
Life + 1
Life + 1
 
Warnings: 1 
Joined: December 2003
Posts: 664
Tomatoes 5330
Lemons 3432
hearts 65

  • Back to top Page bottom
 

Post Re: Huh ??

#3  rico 21 Aug 2021 18:57

Wow, really, a little smudge like that can throw the mask a curve ball like that ? Thank you kindly Nik !
 



 
avatar
 rico Gender: Male
Not Too Shy To Talk
Not Too Shy To Talk
Deuce
Deuce
 
Warnings: 1 
Joined: April 2019
Posts: 99
Tomatoes 880
Lemons 108
hearts 117

  • Back to top Page bottom
 


HideWas this topic useful?
Link this topic
URL
BBCode
HTML
HideSimilar Topics
Topic Author Forum Replies Last Post
No new posts Guest 01 Jan 1970 00:00 View latest post
Guest

Page 1 of 1
 



Users browsing this topic: 0 Registered, 0 Hidden and 0 Visitors
Registered Users: None