HDRI and Daylight question

3D Studio Max Plugin (Export Script Plugins developed by [gk] and KilaD; Integrated Plugin developed by Karba)
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darkline
Licensed Customer
Posts: 291
Joined: Wed Mar 07, 2012 11:56 pm

Hi

I've been playing around with this for a while, but a situation I keep running into is that I want to use a HDRI map to light the scene, but I also need to add a sunlight to it to get nice crisp shadows. The problem is when I add octane daylight it overrides the HDRI map and it disappears replaced by a physical sky. Conversely I've tried to add an octane light (small sphere) to approximate the sun instead of the daylight system, but this seems to flicker or randomly turn off when I turn it up to it's highest power (which you need to simulate daylight). Also it can seem very 'local' in it's light distribution.

Any ideas?
Windows 7 64bit/ Intel 3930K/ ASUS Rampage IV/ GTX980ti x 2/ 64GB system RAM
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LudovicRouy
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Posts: 216
Joined: Sat Apr 03, 2010 5:05 pm
Location: FRANCE
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Here is a trick that could help you, create a powerfull HDR white map on a poly(in c4d I bake a poly with high luminescence in hdr format) next you place it far away and above your scene and normal must point on the object you want to light.

Here is the result in octane
Attachments
Fake sun&HDRI.jpg
Fake sun.jpg
darkline
Licensed Customer
Posts: 291
Joined: Wed Mar 07, 2012 11:56 pm

thanks I'll give that a go.
Windows 7 64bit/ Intel 3930K/ ASUS Rampage IV/ GTX980ti x 2/ 64GB system RAM
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