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General => Image Sharing => Topic started by: Dune on May 14, 2019, 06:33:24 AM

Title: fireplace
Post by: Dune on May 14, 2019, 06:33:24 AM
Fake stones and glowing embers, to be put in a Stone Age encampment.
Title: Re: fireplace
Post by: archonforest on May 14, 2019, 07:55:00 AM
Very nice!!
I miss some yellowish color in the fire to represent different temperatures.
Title: Re: fireplace
Post by: N-drju on May 14, 2019, 08:48:43 AM
Nice job. Especially given how hard it generally is to create fire and burning objects in TG.
Title: Re: fireplace
Post by: Hannes on May 14, 2019, 10:49:17 AM
I miss some yellowish color in the fire to represent different temperatures.

That's right. And maybe a lightsource (only illuminating the atmosphere) to make the smoke glow a bit directly above the embers.

Otherwise great!!
Title: Re: fireplace
Post by: bobbystahr on May 14, 2019, 07:54:53 PM
I miss some yellowish color in the fire to represent different temperatures.

That's right. And maybe a lightsource (only illuminating the atmosphere) to make the smoke glow a bit directly above the embers.

Otherwise great!!

ditto and as a nit pick that's more of a fire pit than place although it is the place where the fire is heh heh.
Title: Re: fireplace
Post by: Rich2 on May 14, 2019, 08:41:35 PM
Well it's a fine start, knowing that getting a light source to behave correctly to represent glowing coals is none too easy.  I could tell you what needs to be done, but sure as heck couldn't tell you how.
Title: Re: fireplace
Post by: RenÚ on May 15, 2019, 08:27:22 AM
The atmosphere is good and it is a low fire that is usually reddish in color. A few flying sparks would be nice. :)
Title: Re: fireplace
Post by: N-drju on May 15, 2019, 08:44:20 AM
The atmosphere is good and it is a low fire that is usually reddish in color. A few flying sparks would be nice. :)

This could even be done with a population of a few minuscule, free-floating spheres with a strong luminosity value.
Title: Re: fireplace
Post by: DocCharly65 on May 15, 2019, 04:55:53 PM
Really good start!
I agree with the other to add some (minor) yellow glow and some illumination of the smoke.
Title: Re: fireplace
Post by: Dune on May 16, 2019, 05:56:04 AM
Thanks for your comments, guys. I did some more work on it. PT version is a bit dull and not too nice. Sun is too low anyway, and the ambient occlusion makes it very flat. The normal render with sun at maybe 5║ (and GI) is better. The 'logs' are just procedural displacements (stretched and rotated, mixed) with glow added. I used a displacement to scalar to restrict bluish ashes a bit to the bottom area, used a color adjust to add some yellow to the centers of the red glow. It struck me that with a line of surface shaders, the second (yellow) glow overrides the first (making the red almost dissappear), so I used a merge shader to add.
Title: Re: fireplace
Post by: bobbystahr on May 16, 2019, 05:58:00 AM
now we're talking...those last 2 rock Ulco.
Title: Re: fireplace
Post by: archonforest on May 16, 2019, 06:41:45 AM
Dune's magic in action! Great improvement.
Title: Re: fireplace
Post by: Hannes on May 16, 2019, 10:50:53 AM
Great!! The glow looks a bit greenish on my monitor though.
Title: Re: fireplace
Post by: Dune on May 16, 2019, 10:56:26 AM
That might be the mix of bluish ashes and yellow glow. I may have to separate those. Thanks.
Title: Re: fireplace
Post by: Jonathan on May 16, 2019, 11:06:10 AM
I think it is a great image - only thing to add is it would be nice to see him cooking a rabbit on a spit above the fire ;)
Title: Re: fireplace
Post by: Dune on May 16, 2019, 11:20:54 AM
That's for the Neanderthals to do, up next after this.

At first I tried masking out the ashes from the glow by adding the glowing surface shaders, but luminance apparently can't be 'caught'. I tried 'luminance to scalar', but that didn't work either (strange?), so I had to mix the original masks.
Anyway, I also made a vdisp 32-bit 'logpile' as basis for the glowing embers; the lattter two renders.
Title: Re: fireplace
Post by: archonforest on May 16, 2019, 11:42:21 AM
 8)
Title: Re: fireplace
Post by: Dune on May 16, 2019, 02:27:54 PM
Some folks having fun  ;) It's all too dark, so I'll add a spotlight.....
Title: Re: fireplace
Post by: bobbystahr on May 16, 2019, 03:17:07 PM
Some folks having fun  ;) It's all too dark, so I'll add a spotlight.....

nice man
Title: Re: fireplace
Post by: WASasquatch on May 16, 2019, 10:41:42 PM
Really enjoy this, looks nice. I did this a few times. The one thing I notice immediately is the smallest scale for the embers needs to be reduced to 0.001-0.0025 area for sharper look. It's a little muddled and smooth like lava or something.

Additionally, isolating the the "highest" yellow int he colour spectrum and changing to a light grayscale white PF with subtle darker gray accents creates a nice burn-to-ash look.
Title: Re: fireplace
Post by: Dune on May 17, 2019, 05:41:35 AM
This was the look I was after initially, soft red glow. Later (when it was mentioned in my thread) I added the yellow hotter glow. But I have a problem rendering the whole scene now  >:(
Title: Re: fireplace
Post by: bobbystahr on May 17, 2019, 01:03:25 PM
Y got me curious, what happens to the rest of the scene?
Title: Re: fireplace
Post by: Dune on May 17, 2019, 02:42:16 PM
https://planetside.co.uk/forums/index.php/topic,26553.0.html (https://planetside.co.uk/forums/index.php/topic,26553.0.html)
Title: Re: fireplace
Post by: DocCharly65 on May 18, 2019, 11:41:59 AM
The fireplace looks great now! Nice glowing smoke.
Good luck with the rendering problem!
Title: Re: fireplace
Post by: bobbystahr on May 18, 2019, 02:57:35 PM
https://planetside.co.uk/forums/index.php/topic,26553.0.html (https://planetside.co.uk/forums/index.php/topic,26553.0.html)

I see...no idea about that....good luck and share the solution
Title: Re: fireplace
Post by: WASasquatch on May 18, 2019, 04:04:33 PM
This was the look I was after initially, soft red glow. Later (when it was mentioned in my thread) I added the yellow hotter glow. But I have a problem rendering the whole scene now  >:(

That images "look" is definitely a result of light pollution with the sensor. you can see the yellows that should be prominent muddled by the red lighting. There's also white ash completely coloured by the ambient red glow. This image contamination is likely because of the smoke.

Also, for some strange reason, it's kinda hard to mix red and yellow in TG. Whether lava or fire embers, it's hard to get the right mixes without hard falloffs. The best fix is smallest detail between red and yellow and allow distance to do the blending -- which is probably most like real life and the light emission from the coals IRL.

Can see some coals I did recently here:  https://planetside.co.uk/forums/index.php/topic,24664.msg250749.html#msg250749