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<div class="moz-cite-prefix">As I wrote, it's pretty efficient. It
uses only 2 Transmission bounces, 1 Glossy bounce and even 0
Diffuse bounces. <br>
Each preview is also pretty low poly (Monkey has about 8k verts,
not sure if we reduce this without affecting quality too much).<br>
<br>
Anyway, I don't want to compromise too much. If people have an old
system, there is nothing we can do about it. <br>
The preview should be still much faster than a 3D view render, as
it's fairly small and if people don't want/need it, they can
simply close the "Preview" panel. :)<br>
<br>
Am 27.01.2013 23:59, schrieb Paulius Mscichauskas:<br>
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<blockquote
cite="mid:CAKo70Pm-3D7op=NMsRLCer+gzBK250K0ddgHoqJVM2gpPiQn9A@mail.gmail.com"
type="cite">In my opinion the preview scene should be as primitive
as possible with as much saving on polygons and light interactions
as possible.<br>
It should be set to render pretty much instantantly even on really
slow machines.
<div>
How far can this be dumbed down to still be pretty, but also as
fast as possible?<br>
<br>
<br>
<br>
<div class="gmail_quote">On 28 January 2013 00:40, Thomas Dinges
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:blender@dingto.org" target="_blank">blender@dingto.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hey Sergey
and Brecht,<br>
here is my Cycles Preview Scene attempt:<br>
<br>
Image: <a moz-do-not-send="true"
href="http://blender.dingto.org/dev/preview_render_cycles.jpg"
target="_blank">http://blender.dingto.org/dev/preview_render_cycles.jpg</a><br>
Blend: <a moz-do-not-send="true"
href="http://blender.dingto.org/dev/preview_cycles.blend"
target="_blank">http://blender.dingto.org/dev/preview_cycles.blend</a><br>
<br>
What works:<br>
* Material Preview<br>
* World Preview<br>
* Lamps (Point, Spot and Area)<br>
<br>
Open issues:<br>
* Sun and Hemi Lamps do not work (most likely to the closed
mesh)<br>
* As it uses the scene settings of the preview.blend, we
have a issue<br>
with OSL.<br>
Either we enable OSL in the preview.blend (a bit slower
then) or we<br>
won't have OSL previews. Alternative would be to override
this parameter.<br>
<br>
It's fairly efficient (preview renders in <=1s here on my
i7 2 GHZ and<br>
it uses the Non Progressive integrator, as it gives a better
Noise Ratio<br>
(especially Glossy Reflections).<br>
<br>
I am open to suggestions/improvements.<br>
<br>
Best regards,<br>
Thomas<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Thomas Dinges<br>
Blender Developer, Artist and Musician<br>
<br>
<a moz-do-not-send="true" href="http://www.dingto.org"
target="_blank">www.dingto.org</a><br>
<br>
_______________________________________________<br>
Bf-cycles mailing list<br>
<a moz-do-not-send="true"
href="mailto:Bf-cycles@blender.org">Bf-cycles@blender.org</a><br>
<a moz-do-not-send="true"
href="http://lists.blender.org/mailman/listinfo/bf-cycles"
target="_blank">http://lists.blender.org/mailman/listinfo/bf-cycles</a><br>
</font></span></blockquote>
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<br>
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<br>
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<br>
<pre wrap="">_______________________________________________
Bf-cycles mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Bf-cycles@blender.org">Bf-cycles@blender.org</a>
<a class="moz-txt-link-freetext" href="http://lists.blender.org/mailman/listinfo/bf-cycles">http://lists.blender.org/mailman/listinfo/bf-cycles</a>
</pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Thomas Dinges
Blender Developer, Artist and Musician
<a class="moz-txt-link-abbreviated" href="http://www.dingto.org">www.dingto.org</a></pre>
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