♥ PosetteForever ♥

So I was house-training a budget work-lamp I'd found on CGT. <br /> <a class="post-url" href="https://www.cgtrader.com/3d-models/industrial/other/portable-work-light-3f89fa26-f52b-4a98-a985-79976b11720d" target="_blank">https://www.cgtrader.com/3d-models/...85-79976b11720d</a> <br /> <br /> It included a nice 4k texture map for body & LEDs, with a separate material zone for the front glass, to be set almost transparent. <br /> <br /> So I loaded the map into free Irfan View, painted all but the LED zone black, re-saved as an ambiance mask. <br /> <br /> Looked okay until I dialled up the ambiance to ~99, at which point a patch on top of the case lit. <br /> <br /> Huh ? WTF ?? That's not right... <br /> <br /> 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 <b><i>very </i></b>pale grey smudge which, before inversion was, to the eye, <b><i>indistinguishable </i></b>from black... <br /> <br /> Gotcha. <br /> <br /> Re-painted, the mask now played nice. <br /> <br /> I don't know how that patch slipped through, but lesson learned...

Not a brilliant render, but a useful test of the super-ambiance in action. <br /> <br /> Superfly, 128 pixel-samples, an hour on 'Box'...

Wow, really, a little smudge like that can throw the mask a curve ball like that <img src="https://www.posetteforever.com/images/smiles/eusa_think.gif" alt="" /> ? Thank you kindly Nik <img src="https://www.posetteforever.com/images/smiles/thumb.gif" alt="" /> !