As the title suggests - is this a bug or a feature? Emissive material illuminates geometry, but refuses to work on volume.
For comparison, how it should look, using a sphere light on the second screenshot.
hipfile attached
Karma (CPU, XPU): volumes not affected by emissive material?
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- osong
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- osong
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- Soothsayer
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- jsmack
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- tamte
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jsmackyou shouldn't need to do that
You forgot to set volume limit to >0
emissive objects can be treated as direct lights and therefore sampled more efficiently, I believe this used to default to automatic, now seems to default to No
but you can add rendergeometrysettings node and set Treat As Light to On or Auto
that being said it seems to work only on CPU for me so for XPU you may need to use bruteforce indirect approach by increasing volume limit
Tomas Slancik
FX Supervisor
Method Studios, NY
FX Supervisor
Method Studios, NY
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- jsmack
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tamtejsmackyou shouldn't need to do that
You forgot to set volume limit to >0
emissive objects can be treated as direct lights and therefore sampled more efficiently, I believe this used to default to automatic, now seems to default to No
but you can add rendergeometrysettings node and set Treat As Light to On or Auto
that being said it seems to work only on CPU for me so for XPU you may need to use bruteforce indirect approach by increasing volume limit
XPU doesn't support emissive objects as lights
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- osong
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