Wallpapers

Head_on_a_Stick · 2018-05-24 18:12:37

Slightly tweaked version of one of Mitsuba's demonstration scenes:

Dragon model courtesy of XYZ RGB.

Last edited by Head_on_a_Stick (2018-05-24 21:51:42)

cloverskull · 2018-05-24 19:18:46

Anyone else having ssl complaints from postimg.cc? My browser (with sane security policies) won't even load it.

Head_on_a_Stick · 2018-05-24 19:27:26

^ It's fine at my end, I would have used scrot.moe but the image is too big for a non-member hmm

altman · 2018-05-25 10:27:05

Great job in there HoaS, keep it on.

Head_on_a_Stick · 2018-05-28 12:35:31

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 glasses

Mitsuba render with an HDRI lightmap:

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).

brontosaurusrex · 2018-05-28 12:52:32

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

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

nore · 2018-05-28 14:41:17

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)

brontosaurusrex · 2018-05-28 15:12:20

Like this

?

I agree.

nore · 2018-05-28 15:58:05

lol

Head_on_a_Stick · 2018-05-28 16:36:58

brontosaurusrex wrote:

do 'we' have Depth of field?

Yes sir, we can boogie:

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

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

brontosaurusrex · 2018-05-28 16:52:37

^ Ultra nice.

@nore

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

lbdesign · 2018-05-30 17:15:32

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
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

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

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

Head_on_a_Stick · 2018-05-30 19:06:04

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 glasses

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

brontosaurusrex · 2018-05-31 06:09:49

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)

hhh · 2018-06-03 20:47:45

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

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

brontosaurusrex · 2018-06-04 20:38:40

What happened to Clippy? (alpha)

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

lowrider · 2018-06-05 00:32:33

^ lol

DeepDayze · 2018-06-05 02:12:02

brontosaurusrex wrote:

What happened to Clippy? (alpha)
https://cdn.scrot.moe/images/2018/06/04/clippy6.md.png

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).

:^)

hhh · 2018-06-05 04:20:22

Too old a package to post? Sorry.

brontosaurusrex · 2018-06-21 08:06:08

Microdisplacement experiment (moar).

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

hhh · 2018-06-30 20:20:19

https://www.deviantart.com/hhhorb/art/D … -752281658

redrobo66 · 2018-07-01 21:32:36

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

Fabric by Rob Holt, on Flickr

Bunsen crystal grey2 by Rob Holt, on Flickr

CrysisBL by Rob Holt, on Flickr

BL-Debian-dark-hr by Rob Holt, on Flickr

BL-Debian-dark2-lr by Rob Holt, on Flickr

obscurant · 2018-07-10 02:23:47

hhh · 2018-07-10 02:46:12

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

obscurant · 2018-07-10 07:06:12

hhh wrote:

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

Yeah, I wanted it to look arcade like. Maybe the text should be antialiased.

#476 2018-05-24 18:12:37

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