<div dir="ltr">Hi,<div><br></div><div>The answer is: yes, it's still needed to have this option. And in fact, we need to make spatial split BVH builder threaded and enable it by default.</div><div><br></div><div>But it's also true this option does not speed up all the scenes. it only helps when you've got rather huge faces next to much smaller one, by splitting the node and making it so BVH traversal checks as less primitives as possible.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Mar 31, 2015 at 5:03 PM, David Black <span dir="ltr"><<a href="mailto:db4tech@yahoo.co.uk" target="_blank">db4tech@yahoo.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#ffffff" text="#000099">
<font face="Calibri">Good afternoon Sergey and Thomas,<br>
<br>
Apologies if this is a daft question, do we still need to include
the 'Use Spatial Splits' render option?<br>
<br>
During Cycles early development it helped improve render
performance, now Cycles has matured and received numerous
optimisations using spatial splits mostly seems detrimental to
performance.<br>
<br>
Thank you for your time.<span class="HOEnZb"><font color="#888888"><br>
<br>
David</font></span></font><br>
</div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div><span style="color:rgb(102,102,102)">With best regards, Sergey Sharybin</span></div></div>
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