[Radiance-general] Strange halo artifact in rendering

Mark Stock mstock at umich.edu
Fri Mar 15 07:48:14 PDT 2013


Jack,

Excellent! Thank you. I am surprised that -ar has any effect when sampling 
is turned off (-aa 0). I didn't even try to modify -ar because I didn't 
think it would do anything.

Mark

On Fri, 15 Mar 2013, Jack de Valpine wrote:

> Hi Mark,
>
> Yeah, poking around a bit I see the direct parameter don't seem to have much 
> impact. On the other hand I found that if I set -ar to 256 then the halo 
> disappears.
>
> -Jack
>
> -- 
> Jack de Valpine
> President
>
> Visarc Incorporated
> www.visarc.com
>
> channeling technology for superior design and construction
>
> On 3/15/2013 9:57 AM, Mark Stock wrote:
>> Jack,
>> 
>> Sorry. Reducing -dc -dt and -ds doesn't seem to do anything.
>> 
>> I learned this morning that the halo is coming from the array of ceiling 
>> lights and not the spotlight.
>> 
>> I also discovered that the halo gets smaller as the black box is moved away 
>> from the wall.
>> 
>> And the antimatter cutout that turns the box into a frame doesn't affect 
>> the halo.
>> 
>> Mark
>> 
>> On Fri, 15 Mar 2013, Jack de Valpine wrote:
>> 
>>> Sorry I did not mean -dr (thinking of a different thread), so -ds, -dc, 
>>> -dt...
>>> 
>>> -- 
>>> Jack de Valpine
>>> President
>>> 
>>> Visarc Incorporated
>>> www.visarc.com
>>> 
>>> channeling technology for superior design and construction
>>> 
>>> On 3/15/2013 8:48 AM, Jack de Valpine wrote:
>>>> Hey Mark,
>>>> 
>>>> What are your parameters? Have you taken a look at -dr, -dc, -dt?
>>>> 
>>>> -Jack
>>>> 
>>> 
>>> 
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>> 
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