[x3d-public] [x3dom-developers] MacOS: El Capitan breaks X3DOM volume rendering

[Vincent Marchetti]

Thanks, John, that could be valuable hint. I was blissfully ignorant of Metal until now, but this page: https://support.apple.com/en-us/HT205073 : explains that Metal is a new graphics technology, and  my hardware (Mac Mini, late 2014) should support it. So it might be that it is Metal that's breaking the volume rendering. Now to see if Metal can be disabled on my system.


> On Aug 18, 2016, at 4:22 PM, John Carlson <yottzumm at gmail.com> wrote:
> 
> Didn't Metal come out with El Capitan?
> 
> 
> On Aug 18, 2016 4:19 PM, "Vincent Marchetti" <vmarchetti at ameritech.net> wrote:
> I just discovered that volume rendering in X3DOM seems to break in the latest Mac system release:  "El Capitan"
> 
> Looking at the WebGL-based adaptation of X3D volume rendering, as demonstrated on the Vicomtech demo pages http://demos.vicomtech.org ; in particular the http://demos.vicomtech.org/medx3dom2015/volrenOpacityTest_body.xhtml example:
> 
> Here is that page as rendered in Safari, running under "El Capitan" a.k.a Mac OS 10.11.6
> 
> <ElCapitan VolRen screenshot.jpeg>
> 
> (Note: Not obvious in this screenshot, but one "slice" of the volume image faintly appears in the El Capitan rendering)
> 
> 
> 
> while in Safari, under "Yosemite" a.k.a. Mac OS 10.10.5
> 
> <Yosemite VolRen screenshot.jpeg>
> 
> 
> 
> These screenshots were made with Safari browser, but Chrome and Firefox show same results in the two MacOS releases.
> 
> A request to members of the mailing lists:
> 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!)
> 
> 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?
> 
> Thanks
> 
> Vincent Marchetti
> vmarchetti at ameritech.net
> 
> 
> 
> 
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Vincent Marchetti
vmarchetti at ameritech.net