<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">I just discovered that volume rendering in X3DOM seems to break in the latest Mac system release: "El Capitan"<div class=""><br class=""></div><div class="">Looking at the WebGL-based adaptation of X3D volume rendering, as demonstrated on the Vicomtech demo pages <a href="http://demos.vicomtech.org" class="">http://demos.vicomtech.org</a> ; in particular the <a href="http://demos.vicomtech.org/medx3dom2015/volrenOpacityTest_body.xhtml" class="">http://demos.vicomtech.org/medx3dom2015/volrenOpacityTest_body.xhtml</a> example:</div><div class=""><br class=""></div><div class="">Here is that page as rendered in Safari, running under "El Capitan" a.k.a Mac OS 10.11.6</div><div class=""><br class=""></div><div class=""><img apple-inline="yes" id="EA6E8134-77F0-4D1B-B10B-7D9530BB6346" height="251" width="240" apple-width="yes" apple-height="yes" src="cid:E51250FA-6BB6-452E-B213-BB80046B515D@attlocal.net" class=""></div><div class=""><br class=""></div><div class="">(Note: Not obvious in this screenshot, but one "slice" of the volume image faintly appears in the El Capitan rendering)</div><div class=""><br class=""><div class=""><br class="webkit-block-placeholder"></div><div class=""><br class="webkit-block-placeholder"></div><div class="">while in Safari, under "Yosemite" a.k.a. Mac OS 10.10.5</div><div class=""><br class=""></div><div class=""><img apple-inline="yes" id="916813F9-80A7-4439-B593-5C4608948A6A" height="240" width="251" apple-width="yes" apple-height="yes" src="cid:09D608F4-1BFE-4C2C-ACCA-AA774D98196C@attlocal.net" class=""></div><div class=""><br class="webkit-block-placeholder"></div><div class=""><br class="webkit-block-placeholder"></div><div class=""><br class="webkit-block-placeholder"></div><div class="">These screenshots were made with Safari browser, but Chrome and Firefox show same results in the two MacOS releases.</div><div class=""><br class=""></div><div class="">A request to members of the mailing lists:</div><div class="">If you are a Mac user and have upgraded to El Capitan, can you confirm these results (or even better, let me know that this was caused by a simple screwup or misconfiguration on my part!)</div><div class=""><br class=""></div><div class="">If you are familiar with how the volume rendering works in X3DOM, where would I even start in understanding how this can depend on OS release?</div><div class=""><br class=""></div><div class="">Thanks</div><div class=""><br class=""></div><div class="">Vincent Marchetti<br class="">vmarchetti@<a href="http://ameritech.net" class="">ameritech.net</a></div><div class=""><br class=""><br class=""></div><br class=""></div></body></html>