Comments on: Mitsuba 0.4.0 released http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/ Wed, 13 Apr 2016 15:09:25 +0000 hourly 1 https://wordpress.org/?v=187 By: Wenzel Jakob http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-3707 Sun, 17 Feb 2013 08:16:00 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-3707 hi — sorry, there are only 64 bit builds available. You will have to use a 64 bit linux OS to run them (you are currently on 32 bit).

]]> By: othman Bahnous http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-3706 Sun, 17 Feb 2013 08:14:18 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-3706 hello, i have a problem with mitsuba with linux ubuntu 12.10,
when i try to install it an error apar “Wrong architector AMD64″.
when i pass this line on terminal : uname -a i have this
Tue Oct 9 19:32:08 UTC 2012 i686 i686 i686 GNU/Linux
so i have 32 bit.
witch version of mitsuba is compatible.
thx

]]> By: Wenzel Jakob http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-3425 Thu, 31 Jan 2013 16:44:10 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-3425 Whoops, I forgot to respond to this question. In case it still matters:

1. Yes, the volume renderers jointly handle light transmission through surfaces *and* medium scattering.

2. How easy/convenient you find PBRT/Mitsuba is really mostly up to you, and what you’re looking for. The focus is obviously very different: because PBRT is simultaneously also a book, its implementations must be very compact and self-contained — I like it a lot, and the design of Mitsuba was partly influenced by it.

Mitsuba can spend considerably more space on various things. For example, its kd-tree construction and traversal code easily take up a few tens of thousands of lines of code, which could fill an entire book on its own. But this pays back in terms of rendering performance, so for Mitsuba this is the preferred tradeoff.

]]> By: moon jung http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-2159 Sat, 17 Nov 2012 00:54:41 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-2159 Thanks, Wuenzel. Very clear. Let me ask some more questions.

1. when the volume renders support surfaces, do they handle
light transmission through surfaces as well as light reflection?

2. How would you compare Mitsuba with PBRT renderer? What do Mitsuba which PBRT do not? Also how easy to use Mitsuba compared with PBRT, if you can comment on it?

Moon

]]> By: Wenzel Jakob http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-2139 Thu, 15 Nov 2012 08:46:44 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-2139 Note that there are two different ways of rendering participating media.

  • medium-type participating media plugins (“homogeneous”, “heterogeneous”) simulate the individual scattering events accurately, and you can pretty much build anything with them. this includes arbitrary surfaces embedded in media etc.
  • subsurface-type participating media plugins (currently only one exists, named “dipole”) simulate a very approximate version of the light transport using diffusion theory. This means that what you can model is much more limited, and one of the assumptions (in addition to many others…) is indeed that you’re rendering a closed object with nothing inside.

What I said in my previous post only applies to the first category.

]]> By: moon jung http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-2138 Thu, 15 Nov 2012 08:14:31 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-2138 Hmm.. Your answers seem to imply that the integrators that support participating media AUTOMATICALLY support

surfaces in the volume as well. Right?

Moon Jung

]]> By: Wenzel Jakob http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-2136 Thu, 15 Nov 2012 04:52:16 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-2136 thanks, I’m glad you like it. The integrators supporting participating media are: both volumetric path tracers, photon mapping (only homogeneous media), the particle tracer, and all bidirectional rendering techniques.

]]> By: moon r. jung http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-2135 Thu, 15 Nov 2012 04:49:18 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-2135 Hi, Wenzel. I found your work while I was searching the internet.
I skimmed over the documentation. It looks wonderfu. Thanks for the great work.

I have one question:

Which integrators handle both participating media and surfaces?

Some integrators have “warnings” saying that they do not support participating media. I

Moon Jung

]]> By: Uro http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-2055 Mon, 05 Nov 2012 14:11:31 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-2055 Can’t wait to test this. Thanks for your hardwork.

———————-
The Force is strong with this one – Darth Vader

]]> By: Wenzel Jakob http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1745 Thu, 11 Oct 2012 02:41:06 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1745 the Ubuntu package dependency issue has been fixed in 0.4.1.

]]> By: Wenzel Jakob http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1744 Thu, 11 Oct 2012 02:39:54 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1744 hi — the Windows XP incompatibility has been fixed — it should work in 0.4.1.

]]> By: Wenzel Jakob http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1743 Thu, 11 Oct 2012 02:37:23 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1743 this issue has been fixed — it should work in 0.4.1.

]]> By: Kagarrache http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1736 Wed, 10 Oct 2012 16:51:55 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1736 Amazing.

Working pretty fine with the binaries provided for Arch x86_64… in a damned Optimus laptop.

]]> By: Getting started with Blender and Mitsuba Render | Blender 3D Architect http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1735 Wed, 10 Oct 2012 15:26:04 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1735 […] of the open source and physically based render called Mitsuba was released a few days ago, and the software is now at version 0.4.0. This renderer has great potential and features that could really help anyone using Blender as a […]

]]> By: Wenzel Jakob http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1723 Tue, 09 Oct 2012 17:21:33 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1723 thanks!

]]> By: Ian http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1717 Tue, 09 Oct 2012 10:08:15 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1717 Mistake in the documentation on page 151: All parts of figure 32 have the same letter.

]]> By: marcoG http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1698 Sun, 07 Oct 2012 12:41:48 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1698 Many thanks for clarifying Wenzel, can’t wait to play with stable bdpt. Doing some other tests in the same BA thread.

Keep the good work.

Regards

]]> By: Wenzel Jakob http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1694 Sat, 06 Oct 2012 23:41:31 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1694 Hi Marco,

the issues in “bdpt” are due to a bug, which has already been fixed. It will work properly with the next release that will be released next week.

About the dielectric+sunsky issue: you have set up a scene that is extremely difficult for a path-tracing based algorithm to render. This is not something specific to Mitsuba — you would encounter the same problem if setting up this exact scene in other renderers. Basically the problem is that you have an intense light source that covers a very small set of directions (i.e. the sun), and it’s used to create caustic paths.

Currently, the only algorithms that can be used for things like this are the progressive photon mapping variants, primary sample space MLT (if you have lots of patience), and path-space MLT with manifold exploration.

Wenzel

]]> By: marcoG http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1690 Sat, 06 Oct 2012 13:11:49 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1690 Wenzel, still getting crash on bi-dir integrator, mainly when i raise up amount of samples in “custom scenes” i build. matpreview works fine, not always though.

I always said “ok” to error report, hope you get info out of that.

Here are some basic tests i’m doing. With sunsky plugin i get really noisy/fireflies results with dielectric bsdf.

http://blenderartists.org/forum/showthread.php?267979-Mitsuba-renderer-0-4-0-released!&p=2216875&viewfull=1#post2216875

]]> By: povmaniaco http://www.mitsuba-renderer.org/devblog/2012/10/mitsuba-0-4-0-released/#comment-1688 Sat, 06 Oct 2012 08:41:04 +0000 http://www.mitsuba-renderer.org/devblog/?p=473#comment-1688 That option is not easy in a country with 25% unemployment … :)

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