POV-Ray: Newsgroups: povray.advanced-users: POVRay color precision

POV-Ray : Newsgroups : povray.advanced-users : POVRay color precision		Server Time 29 Jul 2024 14:11:25 EDT (-0400)

From: George Pantazopoulos
Subject: POVRay color precision
Date: 23 Apr 2002 23:44:25
Message: <3cc62a19$1@news.povray.org>

Does POVRay maintain enough color/lighting precision to output
true16-bit/per channel (48-bit) color resolution with the +fp16 switch? Or
are these values clamped/clipped to the {0,255} range internally before
being output to any file?

Thanks,
George Pantazopoulos

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From: Jérôme Grimbert
Subject: Re: POVRay color precision
Date: 24 Apr 2002 02:45:36
Message: <3CC654EE.7C63CB57@atosorigin.com>

George Pantazopoulos wrote:
> 
> Does POVRay maintain enough color/lighting precision to output
> true16-bit/per channel (48-bit) color resolution with the +fp16 switch? Or
> are these values clamped/clipped to the {0,255} range internally before
> being output to any file?

"Use the source, luke..."

Colour component are represented as float.
For output, the range is clipped to [0,1].
16 bits output per component is already possible for PNG format.

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