Indigo Renderer 3.8.3 Beta Release

General News and accouncements regarding the Indigo render engine
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OnoSendai
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Indigo Renderer 3.8.3 Beta Release

Post by OnoSendai » Thu May 29, 2014 9:09 am

This is a Beta release.
If you spot any bugs or problems, please make a post about them in this thread.
Thanks!

Indigo for Windows 32-bit:
IndigoRenderer_3.8.3_Setup.exe

Indigo for Windows 64-bit:
IndigoRenderer_x64_3.8.3_Setup.exe

Indigo for Linux 64-bit:
IndigoRenderer_x64_v3.8.3.tar.gz

Indigo for Mac OSX (10.6 - 10.8 ):
IndigoRenderer3.8.3.dmg


Indigo RT for Windows 32-bit:
IndigoRT_3.8.3_Setup.exe

Indigo RT for Windows 64-bit:
IndigoRT_x64_3.8.3_Setup.exe

Indigo RT for Linux 64-bit:
IndigoRT_x64_v3.8.3.tar.gz

Indigo RT for Mac OSX (10.6 - 10.8 ):
IndigoRT3.8.3.dmg

Changelog:
3.8.3
* Optimisations for single and bidirectional path tracing, especially for scenes with complex materials.
* Fix for 'black edge' shading normal problem.
* Using pre-bump shading normal for evaluating blend factor shaders instead of dummy vector,
fixes the problem of blending between materials each with a bump map, with a blend shader using the shading normal,
e.g. this material by FakeShamus: http://www.indigorenderer.com/forum/vie ... 79#p127079
* Made various changes to material preview scene (thanks Zom-b, Etienne):
* Changed camera f-stop to reduce DoF blur.
* Changed the floor tile texture to a file with max RGB values of 205.
* Changed the whitepoint to remove bluish tint.
* Changed the tone mapping to agfapan-apx-400CD - colour neutral tone mapping with slightly stronger contrast than linear.
* Optimised Phong sampling for low substrate albedos.
* Refactored and optimised DoubleSidedThin and Coating materials. Should be faster now.
* Fixed crash on ISL edit.
* Added support for top-to-bottom BMPs.
* Fix for participating media being slightly wrong in some cases.
* Fixed bug with texture smooth option that was causing the smoothing to take much longer than necessary.
* Using 'PIZ' compression for EXR writing, is supposedly better for grainy images.
* Fixed bug with shift-lens lens positions not being computed correctly.
* Updated bundled SkIndigo to v3.6.28.1.

Performance Improvements
We're seeing 10-15% performance improvement in terms of samples/second in interiors with bidir.

Some other types of scenes are showing some slowdowns, we'll be looking into those. Please feel free to post any performance measurements you make!

The 'black edge' problem
This is a problem caused by the interaction of shading normals with some materials like Phong. This usually manifests in one of two circumstances. The first is low-polygon models with shading normals (normal smoothing) used. This is often a problem with lower polygon models like a lot of the ones in the SketchUp 3d warehouse. The result in this circumstance is a black line around the edge of the model.

The second circumstance is when applying bump maps to Phong, and results in some darkening of the surface at grazing angles.

Both these behaviours are now greatly improved. (See images below)
Attachments
mat preview 3.8.2.jpg
Material preview scene in 3.8.2. Note the blue tint.
mat preview 3.8.3.jpg
Material preview scene in 3.8.3.
tap 3.8.2.jpg
With Indigo 3.8.2. Note the dark edges around the tap. (More obvious with full view)
tap 3.8.3.jpg
With Indigo 3.8.3
matpreview_with_noise_phong 3.8.2.png
With Indigo 3.8.2. Note the darkening of the mat preview sphere around the edges.
matpreview_with_noise_phong 3.8.3.png
With Indigo 3.8.3

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Pibuz
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Re: Indigo Renderer 3.8.3 Beta Release

Post by Pibuz » Thu May 29, 2014 9:42 am

Thanks Ono everuthing seems great!
Going to test that soon!

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Zom-B
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Re: Indigo Renderer 3.8.3 Beta Release

Post by Zom-B » Thu May 29, 2014 6:59 pm

3.8.3 is my new favorite Indigo build, it seems your phong update is pure magic.
Here a quick 5min benchmark 3.8.2 vs 3.8.3, the quality gain for all phong materials is spectacular!
Bedroom_Benchmark_v03_382.jpg
3.8.2
The small camera jump for 3.8.3 seems because of the shift lens fix, since I use shift lens here...
Bedroom_Benchmark_v03_383.jpg
3.8.3
BTW: please update the Forum Guidelines to allow some biger uploads then 0,5MB!
Raising the bar to 0,75MB would already be a blessing!!

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Oscar J
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Re: Indigo Renderer 3.8.3 Beta Release

Post by Oscar J » Thu May 29, 2014 7:34 pm

Wow that looks very cool Zom-B, thanks for the benchmark. Can't wait to try this release out!

Any news regarding the alpha rendering issue?

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OnoSendai
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Re: Indigo Renderer 3.8.3 Beta Release

Post by OnoSendai » Thu May 29, 2014 11:10 pm

Oscar J wrote:Any news regarding the alpha rendering issue?
I looked into it. The white edges are due to the curved glass on the edge of some windows in your car model. The code is working as expected, although the result isn't really great. So I might try tweaking the code to give a bit better result.

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Re: Indigo Renderer 3.8.3 Beta Release

Post by CTZn » Fri May 30, 2014 5:23 am

i'm glad that you tackled the smoothing normal issue, whatever the cause, and thanks for the editor fix although I did not report it ! good spotting of old issues, keep this up !

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Re: Indigo Renderer 3.8.3 Beta Release

Post by zio » Thu Jun 05, 2014 10:04 am

Dispersion seems to be not working in 3.8.3, it was good in 3.8.0.

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Re: Indigo Renderer 3.8.3 Beta Release

Post by OnoSendai » Thu Jun 05, 2014 10:49 am

zio wrote:Dispersion seems to be not working in 3.8.3, it was good in 3.8.0.
Thanks for report. It's fixed for next release.

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kklors
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Re: Indigo Renderer 3.8.3 Beta Release

Post by kklors » Fri Jun 06, 2014 2:53 am

Thanks a lot for the ISL crash fix!!

ALso bummer with that dispersion! I had a giant prism shining on my last scene but it went all dark so I thought I fucked something up and gave up. Next time I will be sucking around I will blame everything on you guys!

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Re: Indigo Renderer 3.8.3 Beta Release

Post by pixie » Fri Jun 06, 2014 7:03 am

kklors wrote:Next time I will be sucking around I will blame everything on you guys!
That's the best thing to do! ;)

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