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 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 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 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 href="http://www.dingto.org" target="_blank">www.dingto.org</a><br>
<br>
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</font></span></blockquote></div><br></div>