Test Renders IBL

Test Renders IBL

Postby olishea » Sat Sep 22, 2012 12:26 am

Hello, first render I've posted in a while.

Just a quick reflection study with Thea of an old model and a test spherical panorama I made.

I made the spherical hdr at 14,000x7,000 pixels :mrgreen: but 5000x25000 seems to be enough for rendering.

Just IBL, no PP. Infinite ground plane as shadow catcher.





Found this lurking under the twisted hazel!

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Last edited by olishea on Sat Sep 22, 2012 2:59 am, edited 4 times in total.
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Re: Test Render

Postby pilou » Sat Sep 22, 2012 1:01 am

:enlight:

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Re: Test Render

Postby olishea » Sat Sep 22, 2012 1:05 am

:lol:

I like balls, blobs, spheres...call them what you will! :lol:
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Re: Test Render

Postby liam887 » Sat Sep 22, 2012 2:20 am

olishea wrote:Hello, first render I've posted in a while.

Just a quick reflection study with Thea of an old model and a test spherical panorama I made.

I made the spherical hdr at 14,000x7,000 pixels :mrgreen: but 5000x25000 seems to be enough for rendering.

Just IBL, no PP. Infinite ground plane as shadow catcher.





I have no idea how to do this in Thea can you post some screenshot instructions when you have time.?
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Re: Test Render

Postby olishea » Sat Sep 22, 2012 2:32 am

Hi Liam,

In environment settings (on the right), click IBL and then insert a spherical panorama, make sure you disable sun and physical sky. Hit render. Solo made a vimeo on shadow catcher material if you google. Pretty easy.

The hard part is making the spherical panorama! 33 RAW images of different exposures combined into one HDR. Renders VERY quickly with no noise.

I added another render to the first post.
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Re: Test Render

Postby liam887 » Sat Sep 22, 2012 2:41 am

olishea wrote:Hi Liam,

In environment settings (on the right), click IBL and then insert a spherical panorama, make sure you disable sun and physical sky. Hit render. Solo made a vimeo on shadow catcher material if you google. Pretty easy.

The hard part is making the spherical panorama! 33 RAW images of different exposures combined into one HDR. Renders VERY quickly with no noise.

I added another render to the first post.



Have you got one I can practice with if thats ok with you? I do have some but they are all low rez.
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Re: Test Render

Postby olishea » Sat Sep 22, 2012 2:51 am

PMd
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Re: Test Renders IBL

Postby notareal » Sat Sep 22, 2012 12:05 pm

olishea wrote: Infinite ground plane as shadow catcher.

If you use just a large enough square plane (where shadows should cast) with shadow catcher, convergence should be faster. Also for better shadows you should try new mappings; frontal projection is best for well defined shadows and if you want some reflections from the ground mesh (nigec's example at http://www.thearender.com/forum/viewtop ... 175#p71175) or camera mapping (tutorial by george_drakakis http://www.thearender.com/forum/viewtop ... 91&t=10390)
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Re: Test Renders IBL

Postby olishea » Sat Sep 22, 2012 1:46 pm

Thanks for the links notareal. Had to drink some coffee before I started reading them! :lol:

I've been out of the rendering circle for a while so good to get back into it.

Can shadow catchers receive caustics yet? tried this a year ago but no success.
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Re: Test Renders IBL

Postby olishea » Sat Sep 22, 2012 3:17 pm

stereo projection, just for fun (not high dynamic range)

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Re: Test Renders IBL

Postby notareal » Sat Sep 22, 2012 4:27 pm

olishea wrote:Can shadow catchers receive caustics yet? tried this a year ago but no success.


No caustics with shadow catcher at the moment, is just a simple way to embed objects to the environment. With frontal projection and camera mapping you can have all features. You will map actual models or simplified models, so you have all material features, including reflections. They sort of relative to SU photo match and projected textures (naturally without modelling).
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