New features in dev - arch glass and new exit portals

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OnoSendai
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New features in dev - arch glass and new exit portals

Post by OnoSendai » Fri Nov 29, 2013 1:09 am

Hi All,
Now that 3.6 is out, it's time to show some of the new stuff we have been working on :)

The bread and butter of most Indigo users is arch-viz, and a lot of arch-viz consists of sunlight and glass. So we have two new features that should make for some massive improvements for such scenes.

The first is arch glass. Arch glass will be an option for specular materials. It uses some trickery to approximate the flow of light through thin glass. Although it is an approximation, it should be a highly accurate one, and should result in much faster rendering convergence.
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.

The second new feature is a change to the way exit portals work - you will now be able to see through them, e.g. you can still 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.

In this test, we are looking into a room with glass on the window. The cactus is a reflection in the window.

Old: (50 samples / pixel)
outside with glass accel.png
New render with arch glass and new exit portals: (50 samples / pixel)
outside with arch glass and new exit portals.png

This test uses an exit portal on the window.
As you can see, the outside is now visible. Also the reflection of the sunlight on the chrome sphere cleans up much faster.


Old:
sphere portal test old exit portal 100 spp.png
New exit portals with arch glass:
sphere portal test NEW exit portal 100 spp.png

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Re: New features in dev - arch glass and new exit portals

Post by zeitmeister » Fri Nov 29, 2013 2:34 am

Wow, finally!!!
Cheers, David



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Re: New features in dev - arch glass and new exit portals

Post by PureSpider » Fri Nov 29, 2013 2:36 am

What is this new exit portal sorcery?!
BURN THE CONJURER FOR HE DOES THE IMPOSSIBLE! :shock:

On a more serious note, I am looking forward to renewing my license! 8)

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Re: New features in dev - arch glass and new exit portals

Post by wlf_alex » Fri Nov 29, 2013 4:53 am

Perfect ! We really need it !
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Re: New features in dev - arch glass and new exit portals

Post by Godzilla » Fri Nov 29, 2013 5:01 am

Great stuff :)

I'm a little confused by the exit portal- If it's *on* the window, how is the rest of the scene illuminated?
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Re: New features in dev - arch glass and new exit portals

Post by Prof4D » Fri Nov 29, 2013 5:33 am

About my god!
This will work through plagin Cinema+Indigo?
And what about reflections through portal will is seen that for window?

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Re: New features in dev - arch glass and new exit portals

Post by CTZn » Fri Nov 29, 2013 6:34 am

What rendering modes where used for the tests ?
obsolete asset

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Re: New features in dev - arch glass and new exit portals

Post by OnoSendai » Fri Nov 29, 2013 8:32 am

CTZn wrote:What rendering modes where used for the tests ?
All bidir. Glass accel for first image.

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Re: New features in dev - arch glass and new exit portals

Post by Pibuz » Fri Nov 29, 2013 10:35 am

The archviz here seems intrigued by the new stuff and approves. :mrgreen:

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Re: New features in dev - arch glass and new exit portals

Post by Oscar J » Fri Nov 29, 2013 12:09 pm

Can it only be used for flat glass?

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Re: New features in dev - arch glass and new exit portals

Post by OnoSendai » Fri Nov 29, 2013 12:12 pm

Oscar J wrote:Can it only be used for flat glass?
Should work for slightly curved glass as well, like car glass :)
It just won't work for highly curved and complicated glass like headlights, drinking glasses etc..

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Re: New features in dev - arch glass and new exit portals

Post by OnoSendai » Fri Nov 29, 2013 12:13 pm

Godzilla wrote:Great stuff :)

I'm a little confused by the exit portal- If it's *on* the window, how is the rest of the scene illuminated?
It's more of a sampling hint than an exit portal in that respect.

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Re: New features in dev - arch glass and new exit portals

Post by Godzilla » Fri Nov 29, 2013 6:52 pm

Ah I see.

A feature suggestion (I thought I'd say something here since it's not really thread-worthy):

If there were a Hex value field in addition to HSV and RGB in the Indigo color picker, it would be very helpful.
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Re: New features in dev - arch glass and new exit portals

Post by Pibuz » Fri Nov 29, 2013 8:29 pm

..don't know if it's possible (but we're talking about new impossible things, so... :lol: ) but it would be nice to have invisible objects not to be rendered in reflections too.. :!:

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Re: New features in dev - arch glass and new exit portals

Post by PureSpider » Fri Nov 29, 2013 10:17 pm

I know a very easy way: delete the objects in question ;)

The benefit of how it is now is that you can cut the back wall of a room (for example) and still have it rendered in reflective surfaces inside of the room.
What benefit would making the object completely invisible have over just not having it in the scene at all?

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