Emissive shader and lighting
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- jsmack
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- tamte
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as mentioned before to make pure emissive material light your scene, set diffuse bounce limit on Mantra to at least 1
so while geolight is not necessary, it is still advised to use it in your case as if will provide better sampling than just pure emissive material
so while geolight is not necessary, it is still advised to use it in your case as if will provide better sampling than just pure emissive material
Tomas Slancik
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Method Studios, NY
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- tamte
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you are rendering your softbox objects also using them as lights so they are shadowing themselves causing your artifacts
so either don't include them in render and make your geolights renderable or remove them from shadow casting
also instead of geolights can youmaybe use area lights with texture, if your only purpose is to emulate softbox?
so either don't include them in render and make your geolights renderable or remove them from shadow casting
also instead of geolights can youmaybe use area lights with texture, if your only purpose is to emulate softbox?
Edited by tamte - Sept. 8, 2018 16:59:20
Tomas Slancik
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Method Studios, NY
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The reasons for using a softbox rather than area light are:
1. ability to control direction and angle of light
2. to better replicate reflections in a studio environment.
Maybe I can replace the geolights with an area light approximately the size of the emissive portion of the softbox and make it a child of the softboxes. I'll try that to see if it works better.
Interestingly, it appears with making a geolight from an object, it uses the materials on the object and doesn't light in the direction that the portions of the object are shaded black.
1. ability to control direction and angle of light
2. to better replicate reflections in a studio environment.
Maybe I can replace the geolights with an area light approximately the size of the emissive portion of the softbox and make it a child of the softboxes. I'll try that to see if it works better.
Interestingly, it appears with making a geolight from an object, it uses the materials on the object and doesn't light in the direction that the portions of the object are shaded black.
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