Emitter renders Black??

nzjimmy2001 · May 7th, 2007

For some reason any emitter I render in my scene turns black. Help!!
Why is this happening?

Maxer · May 8th, 2007

It could be that the object you applied the emitter to has its normal’s flipped, or the emitter material it's self is turned off or the wattage is very low.

nzjimmy2001 · May 10th, 2007

hmm doesn't seem to be any of those problems. bugger. thanks for the suggestion tho.

ClaudeFerret · May 10th, 2007

Are you rendering from a plugin, or from Studio?

nzjimmy2001 · May 10th, 2007

from plugin

ClaudeFerret · May 10th, 2007

Apply your emitter to a solid, like a sphere, and see if it still is black. Also, does the emitter thumbnail material show up as black?

nzjimmy2001 · May 20th, 2007

yes i did try applying it to a plane. yes the preview is white as it should be. i was thinking it may be a scene scale issue?

ClaudeFerret · May 22nd, 2007

Well you could crank up the emitters value to a ludicrous level to see if it is illuminating the scene. I have heard of this problem with scenes containing old maxwell information mixed together with current mats.

If changing the values of your emitter does nothing, I would suggest moving it to Studio and trying it there. Apply the default mat to every object in your scene, then create a new emitter in Studio and apply it to your plane. Crank up the level of the emitter and see if you get a result. Double check the normals direction.

This should get a result, if it doesn't, try posting the file and I am sure someone will help take a look at it for you.

If it is Rhino, I would be happy to check it.

May 7th, 2007	#1 (permalink)
nzjimmy2001 Member Join Date: Jul 2006 Location: Wellington Posts: 58 Name: Greg McKinley	Emitter renders Black?? For some reason any emitter I render in my scene turns black. Help!! Why is this happening?

May 8th, 2007	#2 (permalink)
Maxer Moderator Join Date: Feb 2004 Location: USA Age: 34 Posts: 2,503 Name: Devin Johnston	Re: Emitter renders Black?? It could be that the object you applied the emitter to has its normal’s flipped, or the emitter material it's self is turned off or the wattage is very low. __________________ “There is no spoon” http://devinjohnston.cgsociety.org/gallery/

May 10th, 2007	#3 (permalink)
nzjimmy2001 Member Join Date: Jul 2006 Location: Wellington Posts: 58 Name: Greg McKinley	Re: Emitter renders Black?? hmm doesn't seem to be any of those problems. bugger. thanks for the suggestion tho.

May 10th, 2007	#4 (permalink)
ClaudeFerret Member Join Date: Jan 2006 Location: California Posts: 44 Name: Stephen Azevedo	Re: Emitter renders Black?? Are you rendering from a plugin, or from Studio?

May 10th, 2007	#5 (permalink)
nzjimmy2001 Member Join Date: Jul 2006 Location: Wellington Posts: 58 Name: Greg McKinley	Re: Emitter renders Black?? from plugin

May 10th, 2007	#6 (permalink)
ClaudeFerret Member Join Date: Jan 2006 Location: California Posts: 44 Name: Stephen Azevedo	Re: Emitter renders Black?? Apply your emitter to a solid, like a sphere, and see if it still is black. Also, does the emitter thumbnail material show up as black?

May 20th, 2007	#7 (permalink)
nzjimmy2001 Member Join Date: Jul 2006 Location: Wellington Posts: 58 Name: Greg McKinley	Re: Emitter renders Black?? yes i did try applying it to a plane. yes the preview is white as it should be. i was thinking it may be a scene scale issue?

May 22nd, 2007	#8 (permalink)
ClaudeFerret Member Join Date: Jan 2006 Location: California Posts: 44 Name: Stephen Azevedo	Re: Emitter renders Black?? Well you could crank up the emitters value to a ludicrous level to see if it is illuminating the scene. I have heard of this problem with scenes containing old maxwell information mixed together with current mats. If changing the values of your emitter does nothing, I would suggest moving it to Studio and trying it there. Apply the default mat to every object in your scene, then create a new emitter in Studio and apply it to your plane. Crank up the level of the emitter and see if you get a result. Double check the normals direction. This should get a result, if it doesn't, try posting the file and I am sure someone will help take a look at it for you. If it is Rhino, I would be happy to check it.

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