Little else, what the title says
What would be the number of rebounds for this in general?
Infinite reflection mirror (physically accurate)
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Please upload a testscene that allows developers to reproduce the problem, and attach some images.
Please upload a testscene that allows developers to reproduce the problem, and attach some images.
Infinite reflection mirror (physically accurate)
Full Hybrid Back/Forward path tracing - I don't like clamping - Bidir it's great but very slow - I have 4096 MiB de Vram and I want to cry.
Re: Infinite reflection mirror (physically accurate)
It depends on the reflectivity of the mirror, just do some tests with higher/lower path depths.
Re: Infinite reflection mirror (physically accurate)
the mirror seems not to meet the mirror criteria
or I am doing something wrong
https://physics.stackexchange.com/quest ... y-infinite
Mirror
Metal with Roughness 0.0010
Metal with Roughness 0 (Constant Value 0)
Full Hybrid Back/Forward path tracing - I don't like clamping - Bidir it's great but very slow - I have 4096 MiB de Vram and I want to cry.
Re: Infinite reflection mirror (physically accurate)
Full Hybrid Back/Forward path tracing - I don't like clamping - Bidir it's great but very slow - I have 4096 MiB de Vram and I want to cry.
Re: Infinite reflection mirror (physically accurate)
I can't open any of the images you linked, so I have no idea what exactly you are trying, but just to give you an extra hint to what the stack-article already says:
Typical household mirrors are so-called second-surface mirrors, i.e. a reflective silver layer is behind a sheet of glass. So you will have losses from the reflection, which is not 100%, and absorption from the glass. As a note on the reflectance, I have often seen them to leak some light through the backside paint, as the silver layer is not quite thick enough. So a realistic assumption would be 90% reflectance, perhaps even lower. In comparison, standard laboratory first-surface silver mirrros are around 96% for visible light.
This old thread might also interest you, as it contains anotehr real example:
viewtopic.php?f=2&t=917
Edit: Now, after writing the answer, suddenly the images display... The luxcore mirror material is just simply an ideal mirror, i.e. 100% reflective. Not sure how metal is defined internally. You can always try mixing mirror with perfect matte black, if you want to play around with tuning reflectivity.
Typical household mirrors are so-called second-surface mirrors, i.e. a reflective silver layer is behind a sheet of glass. So you will have losses from the reflection, which is not 100%, and absorption from the glass. As a note on the reflectance, I have often seen them to leak some light through the backside paint, as the silver layer is not quite thick enough. So a realistic assumption would be 90% reflectance, perhaps even lower. In comparison, standard laboratory first-surface silver mirrros are around 96% for visible light.
This old thread might also interest you, as it contains anotehr real example:
viewtopic.php?f=2&t=917
Edit: Now, after writing the answer, suddenly the images display... The luxcore mirror material is just simply an ideal mirror, i.e. 100% reflective. Not sure how metal is defined internally. You can always try mixing mirror with perfect matte black, if you want to play around with tuning reflectivity.
Re: Infinite reflection mirror (physically accurate)
Changing the reflection color of the mirror material should be enough.
Re: Infinite reflection mirror (physically accurate)
Right... I forgot about that