MAYA_ Posted November 14, 2017 Share Posted November 14, 2017 Hi everyone! I am trying to emit light from a material but while the material is glowing, the other objects in the scene are not affected by the light. I have used the glow material to drive the colour emission on my princiled shader. Does anyone know what I am doing wrong, or should I approach this differently? I would be grateful about any help Quote Link to comment Share on other sites More sharing options...
jkunz07 Posted November 14, 2017 Share Posted November 14, 2017 (edited) I think on your Mantra ROP, set indirect diffuse bounces to a number greater than 0. Another method is to use an Indirect Light set to "Irradiance Only" Edited November 14, 2017 by jkunz07 Quote Link to comment Share on other sites More sharing options...
MAYA_ Posted November 15, 2017 Author Share Posted November 15, 2017 17 hours ago, jkunz07 said: I think on your Mantra ROP, set indirect diffuse bounces to a number greater than 0. Another method is to use an Indirect Light set to "Irradiance Only" Thank you so much for your reply! I can't seem find the indirect diffuse bounces setting you were referring to but I tried it using an indirect light. I am getting a lot of noise though and incredible high render times. I am wondering if I am doing something wrong. I considered using a geometry light instead but I want the light to only emit in certain areas. Is there any way I can use the layered material as some kind of a mask for the geometry light or should I approach this differently? Sorry about all the questions Quote Link to comment Share on other sites More sharing options...
jkunz07 Posted November 16, 2017 Share Posted November 16, 2017 By diffuse bounces, I was referring to the "Diffuse Limit" parameter. This is found on the Mantra ROP under Rendering -> Limits -> Diffuse Limit If you use a Geometry Light, you'll have the advantage of being able to use photon caching (GI) techniques to speed up the renders. I'm not sure how you have your scene or material layers set up, but it should be pretty simple to do. Quote Link to comment Share on other sites More sharing options...
MAYA_ Posted November 18, 2017 Author Share Posted November 18, 2017 On 16/11/2017 at 2:33 AM, jkunz07 said: By diffuse bounces, I was referring to the "Diffuse Limit" parameter. This is found on the Mantra ROP under Rendering -> Limits -> Diffuse Limit If you use a Geometry Light, you'll have the advantage of being able to use photon caching (GI) techniques to speed up the renders. I'm not sure how you have your scene or material layers set up, but it should be pretty simple to do. Thank you so much! I got it and it works fine now Quote Link to comment Share on other sites More sharing options...
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