POV-Ray : Newsgroups : povray.beta-test : QR command line option : Re: QR command line option Server Time
4 Jun 2023 06:52:24 EDT (-0400)
  Re: QR command line option  
From: Alain
Date: 14 Nov 2009 11:50:22
Message: <4afedfce@news.povray.org>

> Hello people.
> I was trying to get kpovmodeler to use 3.7beta, and thought I was there.
> But then I got a command-line problem. It seems 3.7 doesn't accept +QR as
> an option anymore (does it?).
> Kpovmodeler always seems to generate +(or -)QR, so this means some patch
> to the source code...
> I couldn't find any reference to the QR flag in the changelog. Is this
> change documented somewhere?
> John

Taking a good look at the documentation, both 3.6 and 3.7, the only +Q 
something I can find is +Qn, or +qn, used to set the quality of the 
You need an integer in the range 0..11 after the "Q".

In 3.6, the "R" seems to be ignored, or it assume that anything not 
numeric means to use the default of 9, and it generate an error when you 
use 3.7.
On the POV side, it's just that 3.7 is more strict in what you can use.
Maybe it was a valid switch in some version older than 3.6.

It looks like a bug in Kpovmodeler as +QR/-QR is NOT a valid command 
line argument in 3.6.


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