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I read that something is still being done about media and (alpha)
transparency, and there was talk of the defaults last month, but very little
said lately.
There's obviously a change between 3.6.1 and 3.7 beta 5a which makes media
darker now. Thought it a good idea to post a message here before the current
beta expires. Maybe it's already being dealt with, but I didn't want to let
it go without telling of it myself.
Comparison renderings of the file scenes\interior\media\micro.pov posted to
povray.beta-test.binaries.
Bob Hughes
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"Bob Hughes" <bob### [at] charter net> wrote:
> Comparison renderings of the file scenesinteriormediamicro.pov posted to
> povray.beta-test.binaries.
OTOH, there is a known difference in the way gamma correction is done
between 3.6.1a and 3.7.beta5a. This file renders exactly the same if
assumed_gamma is set at 2.2 instead of 1...
JYR
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"JYR" <jyr### [at] hotmailcom> wrote in message
news:web.42ada38cdb562bc76a3607400@news.povray.org...
>
> OTOH, there is a known difference in the way gamma correction is done
> between 3.6.1a and 3.7.beta5a. This file renders exactly the same if
> assumed_gamma is set at 2.2 instead of 1...
Okay, I see now that using assumed_gamma 2.2 in version 3.6 did make
micro.pov look the same for both versions.
However, something is still wrong. I was trying my own scene file in 3.7
beta when I needed to go back to v3.6, for animation because the beta 5a
still isn't able to animate.
Making the assumed_gamma change, as you suggested, did not correct the media
appearance. I'm seeing an oversaturation of the media. Since I was making
this media-filled object in 3.7 it only looks correct there. Only conclusion
I can make is that something isn't handling the media in the same way
between the two versions.
The clue might be that the density is greater than 1, and now, after
checking with it set to only rgb <1,1,1> I see it seems to fix the look of
it.
Could density be getting clipped in some way in 3.7 beta 5a?
Bob Hughes
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Bob Hughes wrote:
> There's obviously a change between 3.6.1 and 3.7 beta 5a which makes media
> darker now.
This is still the same bug that was initially listed. Nothing has changed
in this regard, it is still a bug.
Thorsten
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"Thorsten Froehlich" <tho### [at] trfde> wrote in message
news:42adcd82$1@news.povray.org...
> Bob Hughes wrote:
>> There's obviously a change between 3.6.1 and 3.7 beta 5a which makes
>> media darker now.
>
> This is still the same bug that was initially listed. Nothing has changed
> in this regard, it is still a bug.
Okay, thanks. While reading about media problems from earlier I thought this
might be different somehow.
Bob Hughes
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