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Indigo News


More bidir optimisations

Written Friday 31 Jan

A little while ago (1st december last year) I wrote that I had achieved a 20% speedup of bidir (bidirectional path tracing) on a reference test scene, measured relative to our last stable release, 3.6.

Since then I've been continuing to optimise bidir and the indigo render core in general. Indigo now renders 1.8x faster on the test scene! (80% faster).

This is measured on a pretty simple scene - speedups for more complex scenes will be somewhat less. However I think it's a pretty big speed boost for what will be a free upgrade (version 3.8) for all Indigo 3 owners.

-- nick


Cloud Render

Written Wednesday 29 Jan

Following on from the last blog post about Atmospheric and volume rendering improvements in Indigo, here's a render using procedural clouds and Indigo's atmospheric simulation.

This scene (or an improved version) will probably be bundled as one of the example scenes for the next Indigo version.

There's two layers of volumetric clouds - the wispy cirrus clouds at high altitude and the fluffy cumulus clouds at low altitude.

Click for full image.


Atmospheric and volume rendering improvements

Written Sunday 5 Jan

Recently the Indigo users Yonosoy and CTZn have been pushing the limits of Indigo in terms of procedural terrains and clouds, all rendered with Indigo's powerful and accurate atmospheric simulation.

(See the forum threads here: http://www.indigorenderer.com/forum/viewtopic.php?f=3&t=12050&start=30 and here: http://www.indigorenderer.com/forum/viewtopic.php?p=125277#p125277)

Something I find remarkable is that the scene file that produces the image above is just 17KB, and contains only about 40 lines of Indigo Shader Language code. Yet a very lifelike and complex image is produced.

Their work has inspired me to improve Indigo's support for volumetrics and atmosphere rendering even more.
As a result Indigo's next version will be able to render extremely complex volumes faster and more accurately than before.

As an example, this image is a test of something called pyroclastic noise, which can be used for rendering volcanoes, explosions, and cumulus clouds among other things:

This pyroclastic noise should be useful for rendering clouds. These were rendered with another technique:

Indigo renders such images in a completely unbiased way, with multiple scattering etc..

I've improved the accuracy of the atmospheric simulation in Indigo by adding ozone absorption, which lends a nice blue colour to the sky around dawn and dusk. In this render the sun is directly behind the camera. You can actually see the shadow of the earth (the dark band above the horizon). The ozone in the atmosphere preferentially absorbs the longer wavelength visible light, giving the higher elevation sky the bluish colour.

With ozone:

Without ozone:

Note that all the colours in the images above come directly from the laws of physics, and from the measured scattering and absorption profiles of atmospheric gases and particles. None of them were 'put in by hand'.

These improvements will make their way into a new Indigo beta soon, I'm looking forward to what the talented Indigo users can do with them.


Rendering optimisations in Indigo 3.8

Written Wednesday 11 Dec

With the 3.6 stable release out the door, it's time to show some of the new stuff we have been working on for the next version of Indigo!

Indigo 3.8 will bring some important optimisations for arch-viz users, particularly the common case of rendering sunlight through glass: a brand new arch glass option will be available for specular materials, which uses some trickery to accurately approximate the flow of light through thin glass while rendering much, much faster than before!

Indigo arch glass correctly handles multiple reflections, as well as absorption in the glass. It's as easy to use as ticking a checkbox on the specular material settings, and does not require its own rendering mode like the the previous glass acceleration approach.

The second new feature is a change to the way exit portals work - you will now be able to see through them, so for example you can use them in a window, even if the outside of a room should be visible as well. You can even use them for exterior shots looking into a building.

There are a few simple renderings showing the impressive image convergence improvements on the Indigo forum: http://www.indigorenderer.com/forum/viewtopic.php?f=7&t=12735

Also keep an eye out for news about other optimisations and MLT improvements in Indigo 3.8!

Indigo 3.8 will be a free update for all customers with an Indigo 3.x licence.



Written Sunday 1 Dec

I spent a productive weekend optimising bidirectional path tracing in Indigo (the most powerful render mode). It now runs 20% faster!


Indigo 3.6 Release Competition

Written Wednesday 13 Nov

In celebration of the Indigo 3.6 Stable release we are having a competition that is all about Indigo 3.6!

The goal of this competition is to show off the new features in the latest and greatest Indigo release, and entries will be judged by best use of new features.

Starting date is Wednesday the 13th of November, and entries can be submitted no later than Friday the 13th of December.

We're looking forward to seeing what you can do with the new features in Indigo 3.6!

Competition Prizes:

1st place: Indigo Renderer lifetime licence
iPod nano
Indigo Renderer T-shirt

2nd place: Indigo Renderer 3.x licence
Indigo renderer T-shirt

3rd place: Indigo RT 3.x licence
Indigo Renderer mug

Find the rules and discussion here on the forum.


Indigo 3.6 Stable released

Written Wednesday 13 Nov

3.6 banner

Glare Technologies is pleased to announce the release of Indigo 3.6 Stable!

After a period of intensive development, in which many powerful new features were introduced and the user experience refined, the final stable release is now available.

This release is free for all existing Indigo 3.x customers.

For more information please see the Indigo 3.6 release page here: http://www.indigorenderer.com/threepointsix

Indigo 3.6 is the latest milestone in our journey to make Indigo more powerful than ever, while also making it as easy to use as possible.

Particularly sought after are the new compositing features, including enhanced alpha output and a shadow-catcher rendering mode, to greatly accelerate your visualisation workflow.

Two new material types have been added, and the existing materials have been made more realistic and flexible.

Scene objects and light sources can now be hidden from direct view of the camera, a tremendously convenient feature for product visualisation shots.

We've also introduced a new spherical camera type for creating panoramic images.

Indigo's integration with 3ds Max has been tremendously improved since Indigo 3.4, with many bug fixes, workflow improvements and Indigo features supported.

Indigo for Revit also has brand new support for Revit 2014, allowing for stunning renders straight out of Revit.

We'll be running a 25% to 33% off sale until the 13th of December, during which Indigo Renderer will be priced at only €445 (normally €595), and Indigo RT only €99 (normally €145).

Upgrades from Indigo RT to the full Indigo Renderer will also be discounted, at only €345.

Indigo 3.6 is is available on the downloads page: http://www.indigorenderer.com/downloads


3ds Max integration greatly improved and extended

Written Friday 25 Oct

IndigoMax, which integrates Indigo Renderer seamlessly into 3ds Max, has seen tremendous progress in the last weeks, with many improvements and bugfixes that make it a joy to use!

The primary developer, Jakub Jeziorski, has been doing an amazing job and we'd like to encourage all 3ds Max users in our community to try out the latest version of IndigoMax, available here.

Material previews are much faster and higher quality, interactive rendering enables a comfortable workflow for making many changes quickly without hitting render every time, and more of the powerful Indigo features are exposed directly to the user. Many important bugfixes have been made, and GPU acceleration is now fully integrated into the rendering settings.

Indigo forum user Enslaver, known in the community for his beautiful abstract renders, has made a great screenshot showing an overview of the new 3ds+Indigo environment:

Indigo Renderer integration with 3ds Max
Click for full-resolution image.


Modelling a pool in SketchUp and Indigo tutorial

Written Tuesday 17 Sep

We have a new tutorial available: how to model a swimming pool in SketchUp and Indigo.
This tutorial shows how to get nice caustics at the bottom of the pool with SketchUp and Indigo.

You can read it here.


New Indigo reseller for China and Hong Kong

Written Tuesday 10 Sep

We have a new Indigo reseller for China and Honk Kong - Mad Macs Technology Distributions Limited.

Mad Macs have offices in Hong Kong, Shanghai, Beijing and Guangzhou, so will be sure to help you out with your Indigo purchase wherever you are in China and Hong Kong.
To contact them, use the details on our Reseller page.