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#441 2018-05-28 12:35:31

Head_on_a_Stick
Member
From: London
Registered: 2015-09-29
Posts: 9,093
Website

Re: Wallpapers

brontosaurusrex wrote:

hdri maps

^ Thank you so much for this suggestion, it really does make a massive difference to the overall verisimilitude of the image 8)

Mitsuba render with an HDRI lightmap:

test.png

Scene file:

https://gist.github.com/Head-on-a-Stick … 7271d32de5

The envmap.exr lightmap file was extracted from the matpreview.zip sample scene on the Mitsuba site (with the <emitter> stanza copy&pasted from matpreview.xml), just place that in the working directory with the scene file (called balls.xml) and run

mitsuba balls.xml

The sampleCount value controls the quality of the image (and hence the render time).

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#442 2018-05-28 12:52:32

brontosaurusrex
Middle Office
Registered: 2015-09-29
Posts: 2,755

Re: Wallpapers

HoaS: Nice, do 'we' have Depth of field? (That's another 'instant reality improver')

Last edited by brontosaurusrex (2018-05-28 12:57:54)

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#443 2018-05-28 14:41:17

nore
>2⁹
From: squirrels' nest
Registered: 2015-09-29
Posts: 537

Re: Wallpapers

bronto: you could still tell it's not real, because there is no reflection of the  camera, or because you can't see photographer's thumb. wink

A thumb should come standard with raytracing programs, like coffee stain filter in GIMP.

Last edited by nore (2018-05-28 14:41:58)

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#444 2018-05-28 15:12:20

brontosaurusrex
Middle Office
Registered: 2015-09-29
Posts: 2,755

Re: Wallpapers

Like this
saturns1thumb.th.png
?

I agree.

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#445 2018-05-28 15:58:05

nore
>2⁹
From: squirrels' nest
Registered: 2015-09-29
Posts: 537

Re: Wallpapers

lol

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#446 2018-05-28 16:36:58

Head_on_a_Stick
Member
From: London
Registered: 2015-09-29
Posts: 9,093
Website

Re: Wallpapers

brontosaurusrex wrote:

do 'we' have Depth of field?

Yes sir, we can boogie:

test.th.png

^ That's a low-res, low sample image with a bit of noise but it does demonstate the thinlens sensor quite well 8)

nore wrote:

there is no reflection of the  camera

Actually there is — check out the spindly black shape in the reflection in the gold ball sticking up in the middle of the checkerboard base: that's the camera on a tripod smile

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#447 2018-05-28 16:52:37

brontosaurusrex
Middle Office
Registered: 2015-09-29
Posts: 2,755

Re: Wallpapers

^ Ultra nice.

@nore
luxcore.th.png

Last edited by brontosaurusrex (2018-05-28 21:09:30)

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#448 2018-05-30 17:15:32

lbdesign
Member
Registered: 2018-05-13
Posts: 27

Re: Wallpapers

Head_on_a_Stick wrote:
brontosaurusrex wrote:

do 'we' have Depth of field?

Yes sir, we can boogie:

https://cdn.scrot.moe/images/2018/05/28/test.th.png

^ That's a low-res, low sample image with a bit of noise but it does demonstate the thinlens sensor quite well 8)

nore wrote:

there is no reflection of the  camera

Actually there is — check out the spindly black shape in the reflection in the gold ball sticking up in the middle of the checkerboard base: that's the camera on a tripod smile

How long does those things have to render? On what hardware?

Last edited by lbdesign (2018-05-30 17:15:52)

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#449 2018-05-30 19:06:04

Head_on_a_Stick
Member
From: London
Registered: 2015-09-29
Posts: 9,093
Website

Re: Wallpapers

lbdesign wrote:

How long does those things have to render?

That depends on the number of samples taken per pixel (sampleCount) — a quick preview image (640x400, 16 samples) can be generated in a few seconds whereas the full HD images with 512+ samples[1] take a few hours but Mitsuba seems to be significantly quicker than Blender/Cycles.

The memory usage can be prohibitive though: the XYZ RGB dragon at the top of this page can only be rendered at a small scale (using the dipole subsurface scattering BSDF) with the 4GiB I have available.

On what hardware?

ThinkPad X201 big_smile

I'll have to try and get a headless NUC renderbox or something before I burn the poor laptop out.

[1] it's best to set the sampleCount to a power of two, it makes the arithmetic tidier 8)

Last edited by Head_on_a_Stick (2018-05-30 19:08:28)

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#450 2018-05-31 06:09:49

brontosaurusrex
Middle Office
Registered: 2015-09-29
Posts: 2,755

Re: Wallpapers

Options are many, with blender/cycles you can pack the thing and send it to the remote server that has 3x gtx 1060 or send it to some render farm like sheepit (there is a person with 100 xeons connected), however in practice most of my static images are rendered on cpu (10 years old macpro xeon) and I can usually survive times lesser than 30 minutes before the project gets boring (that would depend on individual). Also most of my imaging is noncommercial.

Cli rendering notes
https://brontosaurusrex.github.io/2017/ … -with-gpu/

The new 2.8 series will have a real time eevee, if you have a hardware for that, which may be good enough for final render in some cases.

Last edited by brontosaurusrex (2018-05-31 07:28:35)

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#451 2018-06-03 20:47:45

hhh
Gaucho
From: High in the Custerdome
Registered: 2015-09-17
Posts: 16,181
Website

Re: Wallpapers

A large package, but there are a lot of nice images in all sorts of resolutions...

https://packages.debian.org/stretch/all … s/download


I don't care what you do at home. Would you care to explain?

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#452 2018-06-04 20:38:40

brontosaurusrex
Middle Office
Registered: 2015-09-29
Posts: 2,755

Re: Wallpapers

What happened to Clippy? (alpha)
clippy6.md.png

Last edited by brontosaurusrex (2018-06-04 20:39:13)

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#453 2018-06-05 00:32:33

lowrider
Member
From: Germany
Registered: 2015-09-29
Posts: 358

Re: Wallpapers

lol

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#454 2018-06-05 02:12:02

DeepDayze
Like sands through an hourglass...
From: In Linux Land
Registered: 2017-05-28
Posts: 1,901

Re: Wallpapers

brontosaurusrex wrote:

Good ol' Clippy aged quite well since I first met him when using Office 97 and still enjoying life (don't forget he's still around in MS Office 2016 as an Easter Egg).

:^)


Real Men Use Linux

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#455 2018-06-05 04:20:22

hhh
Gaucho
From: High in the Custerdome
Registered: 2015-09-17
Posts: 16,181
Website

Re: Wallpapers

Too old a package to post? Sorry.


I don't care what you do at home. Would you care to explain?

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#456 2018-06-21 08:06:08

brontosaurusrex
Middle Office
Registered: 2015-09-29
Posts: 2,755

Re: Wallpapers

Microdisplacement experiment (moar).
bunsenMicro6d_mono_3x3_b.md.png

Last edited by brontosaurusrex (2018-06-27 19:04:55)

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#457 2018-06-30 20:20:19

hhh
Gaucho
From: High in the Custerdome
Registered: 2015-09-17
Posts: 16,181
Website

Re: Wallpapers


I don't care what you do at home. Would you care to explain?

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#458 2018-07-01 21:32:36

redrobo66
Member
Registered: 2018-03-18
Posts: 49

Re: Wallpapers

Some new wallpapers - mostly taken from various distros and given the Bunsen treatment:


43137941271_ef7decca0b_n.jpgFabric by Rob Holt, on Flickr

41326673080_9c8b68b8cd_n.jpgBunsen crystal grey2 by Rob Holt, on Flickr

29266234538_39c474340a_n.jpgCrysisBL by Rob Holt, on Flickr

41326641810_072a4cb2e2_n.jpgBL-Debian-dark-hr by Rob Holt, on Flickr

29266209798_72c6e73d91_n.jpgBL-Debian-dark2-lr by Rob Holt, on Flickr

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#459 2018-07-10 02:23:47

obscurant
Member
Registered: 2017-08-06
Posts: 150

Re: Wallpapers

ikVVhwGm.png

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#460 2018-07-10 02:46:12

hhh
Gaucho
From: High in the Custerdome
Registered: 2015-09-17
Posts: 16,181
Website

Re: Wallpapers

^ I do love me some Deckard. Was the aliasing on the text intentional?


I don't care what you do at home. Would you care to explain?

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