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Hi,<br>
<br>
The benefit is "get rid of legacy algorithms". If we would get a
more realistic Glass shader (at the same performance level), no one
would complain that the render looks different (aka backwards compat
breakage). We kinda have the same argument here. Even in the Hosek
paper, it directly compares with the Preetham model.<br>
<br>
I can add it back for 2.7x (to keep compatibility, as Ton
suggested), but later I really like to remove it. I don't want to
end up with a Blender Internal 2.0, which has gazillions of buttons
and options after 5 years. <br>
<br>
<div class="moz-cite-prefix">Am 04.04.2016 um 17:07 schrieb David
Fenner:<br>
</div>
<blockquote
cite="mid:CAKbJxCQdBhCNiwqGTahs1QyKPJGognVqx+ZBMJ2fY-KR3adkBA@mail.gmail.com"
type="cite">
<div dir="ltr">I agree with stefan. Sometimes I use the old model
just as a complement, or to get a gradient coloured gi instead
of a plain color or a full fledged sky. Matched with a few
lights can make some good looking scenes, even if they are not
realistic (which of course is hardly a priority in many
projects).</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-04-04 11:44 GMT-03:00 Stefan
Werner <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:swerner@smithmicro.com" target="_blank">swerner@smithmicro.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
Is there any benefit to removing the old sky model? Just
because developers think that the new model is better
doesn’t mean that all users will agree. The new model may be
more realistic, but one may use the older model for artistic
reasons. Some will have scenes that rely on the old model,
and unless there is a reason to break those scenes, I’d vote
in favor of keeping it. Besides a few bytes of code, keeping
the old model around doesn’t come with any extra cost, does
it?<br>
<span class="HOEnZb"><font color="#888888"><br>
Stefan Werner | Senior Software Engineer; Productivity
& Graphics<br>
Smith Micro Software, Inc. | <a
moz-do-not-send="true"
href="http://www.smithmicro.com" rel="noreferrer"
target="_blank"><a class="moz-txt-link-freetext" href="http://www.smithmicro.com">http://www.smithmicro.com</a></a> <<a
moz-do-not-send="true"
href="http://www.smithmicro.com/" rel="noreferrer"
target="_blank"><a class="moz-txt-link-freetext" href="http://www.smithmicro.com/">http://www.smithmicro.com/</a></a>><br>
</font></span><span class="im HOEnZb"><br>
<br>
<br>
<br>
<br>
On 4/4/16, 3:43 PM, "<a moz-do-not-send="true"
href="mailto:bf-cycles-bounces@blender.org">bf-cycles-bounces@blender.org</a>
on behalf of Thomas Dinges" <<a moz-do-not-send="true"
href="mailto:bf-cycles-bounces@blender.org">bf-cycles-bounces@blender.org</a>
on behalf of <a moz-do-not-send="true"
href="mailto:blender@dingto.org">blender@dingto.org</a>>
wrote:<br>
<br>
>Hi Ton,<br>
><br>
>I really hoped for the 2.8x project to finally kick
of. It was announced<br>
>almost a year ago, and sounded quite promising
(including the<br>
>possibility for module teams to do bigger cleanups).<br>
><br>
>If we decide to stick to the 2.7x series for much
longer (2.78, 2.79...)<br>
>then *that* is something, that we need a roadmap for.<br>
>Because if that will be the case, I'd ask for a Cycles
branch, where we<br>
>can work on bigger topics.<br>
><br>
>I would like to mention here though, that I wanted to
just replace<br>
>Preetham with Hosek in 2013, when I added it. Back
then Brecht suggested<br>
>to keep it for a bit. Now 2 years later, I'd like to
remove it, as Hosek<br>
>is much more realistic. When will such changes be
possible, without<br>
>conflicting with the BF schedule?<br>
><br>
>Best regards,<br>
>Thomas<br>
</span>
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