Hi
When we change saturation in color tab from 255 to 250 results dont get saved. If we change to like 255 to 240 they are saved. same apples with saturation near 1 and 255. values dont get saved. is it max bug? Video attached
Changing color values
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Before posting a bug report, please check the following:
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2. That the issue is specific to this plugin, and not Octane in general (Try reproducing it in Standalone)
Bugs related to the Octane Engine itself should be posted into the Standalone Support sub-forum.
All bug reports should include the information below, along with a detailed description of the issue and steps to reproduce it.
A. Operating System, including version (i.e. Win 7, OSX 10.11.2, Ubuntu 14.04, etc.)
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Changing color values
by coilbook » Sun Nov 19, 2017 10:44 pm
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[ Play Quicktime file ] colro values.MOV [ 1.42 MiB | Viewed 1884 times ]
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Re: Changing color values
by coilbook » Sun Nov 19, 2017 10:54 pm
it looks like problem with 3ds max curves. they do not move until value is 248 for saturation. So it moves in 7s Why is this?
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Re: Changing color values
by neonZorglub » Mon Nov 20, 2017 1:08 am
Hi Coilbook,
This is just a result of numerical conversion done by max ..
The color is stored and used internally as RGB.. : if it doesn't change, it won't be saved ..
The Hue, Sat, Value version is just a temporary helper .. and for low RGB like your sample (20,2,0), several values of Sat gives the same RGB result..
So this is normal, and a result of the precision loss while converting with integer values of RGB ...
This is just a result of numerical conversion done by max ..
The color is stored and used internally as RGB.. : if it doesn't change, it won't be saved ..
The Hue, Sat, Value version is just a temporary helper .. and for low RGB like your sample (20,2,0), several values of Sat gives the same RGB result..
So this is normal, and a result of the precision loss while converting with integer values of RGB ...
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Re: Changing color values
by coilbook » Mon Nov 20, 2017 3:24 am
neonZorglub wrote:Hi Coilbook,
This is just a result of numerical conversion done by max ..
The color is stored and used internally as RGB.. : if it doesn't change, it won't be saved ..
The Hue, Sat, Value version is just a temporary helper .. and for low RGB like your sample (20,2,0), several values of Sat gives the same RGB result..
So this is normal, and a result of the precision loss while converting with integer values of RGB ...
Thank you !
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Re: Changing color values
by coilbook » Thu Nov 23, 2017 9:48 pm
neonZorglub wrote:Hi Coilbook,
This is just a result of numerical conversion done by max ..
The color is stored and used internally as RGB.. : if it doesn't change, it won't be saved ..
The Hue, Sat, Value version is just a temporary helper .. and for low RGB like your sample (20,2,0), several values of Sat gives the same RGB result..
So this is normal, and a result of the precision loss while converting with integer values of RGB ...
I got this reply on autodesk. Not sure if octane can do this one day
You got an reply in the thread you linked, that's not how it works - legacy shaders support 8-bit RGBA values, i.e. four integer values from 0 to 255, hence the limits. You shouldn't use them if you want higher precision for any reason, use for example Arnold shaders, Vray color or anything else that supports floating point values:
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