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Use HDRI for reflections only? (3D Studio Max)

Posted: Thu Feb 19, 2015 12:27 am
by renderspaz
Hi everyone,

Maybe someone can help me with this, is there a way to use an HDRI image for reflections only with Octane and Max? I want to preview my renders without having the HDRI image in the background as the environment.

Thank you,

Justin

Re: Use HDRI for reflections only? (3D Studio Max)

Posted: Thu Feb 19, 2015 12:33 am
by pegot
I too would like to know if this is possible.

Similarly, when using a texture node with the Daylight system can one hide the actual visibility of the texture and only use what it reflects off an object?

Re: Use HDRI for reflections only? (3D Studio Max)

Posted: Thu Feb 19, 2015 1:24 am
by FooZe
renderspaz wrote:Hi everyone,

Maybe someone can help me with this, is there a way to use an HDRI image for reflections only with Octane and Max? I want to preview my renders without having the HDRI image in the background as the environment.

Thank you,

Justin
Turning "alphachannel" on in the kernel settings should remove the background and show full alpha wherever the background is exposed.
Is that what you are after?

Re: Use HDRI for reflections only? (3D Studio Max)

Posted: Thu Feb 19, 2015 3:19 am
by renderspaz
Yes this will work! Especially when it comes to post, thank you FooZe.

Cheers,

Justin

Re: Use HDRI for reflections only? (3D Studio Max)

Posted: Thu Feb 19, 2015 7:47 am
by pegot
What about when used in combination with the Daylight system - where we just want the HDR or a texture node to add extra refections without being visible themselves, but still have the Daylight background seen?

Re: Use HDRI for reflections only? (3D Studio Max)

Posted: Thu Feb 19, 2015 10:04 am
by glimpse
pegot wrote:What about when used in combination with the Daylight system - where we just want the HDR or a texture node to add extra refections without being visible themselves, but still have the Daylight background seen?
as far as I know. it's not possible & taking into account unbiased nature of this engine, probably never will =)

Re: Use HDRI for reflections only? (3D Studio Max)

Posted: Thu Feb 19, 2015 6:40 pm
by sikotik13
In render engine no, but using the method above to get the reflections and then rendering just a daylight background and compositing in post could be an alternative. I would imagine just rendering an empty daylight scene would be rather quick.