Comments on: Introducing Pannellum

By: Matthew Petroff

Matthew Petroff — Sat, 03 Oct 2015 19:07:38 +0000

In reply to Hiro Abejo. There are no known issues with the standard, desktop version of Chrome. Mobile support can be a bit spotty however, since not all mobile devices support WebGL and of those that do, some don't support larger texture sizes (which limits the maximum panorama size). I generally recommend limiting equirectangular images to 4096px or smaller to maximize device support.

By: Hiro Abejo

Hiro Abejo — Fri, 02 Oct 2015 22:00:07 +0000

First of all, I would like to congratulate and thank you for this wonderful panorama viewer. I have used your library on one of our clients (I hope it is fine for you). I added some additional functions such as floorplans and hotspots on floorplans. However, it sometimes works and then sometimes won’t work on Chrome browsers, especially for Chrome on Android. I hope you can help me with this.

By: Matthew Petroff

Matthew Petroff — Sun, 14 Dec 2014 21:38:41 +0000

In reply to Neil Mackie. The most likely cause is your image being too big for your graphics driver. Images wider than 8192px are not supported by most devices. In this case, you'll get a WebGL: INVALID_VALUE: texImage2D: width or height out of range error in Chrome's JavaScript console (Ctrl+Shift+J) or a WebGL: texImage2D: the maximum texture size for level 0 is [max size] error in Firefox's Web Console (Ctrl+Shift+K). To display large panoramas, you need to convert them to Pannellum's multires format. The utils/multires/generate.py script does this, requiring Python 3 and nona from Hugin; while it should work on Windows and Mac, I've only tested it on Linux.

By: Neil Mackie

Neil Mackie — Sun, 14 Dec 2014 12:40:44 +0000

I have the “Jordan pond” example on my web site and it works OK mackiefamily.net/pano/example.htm .
I also have pano.html in the same directory which has the image I want to display. The preview is displayed OK. When I press “click to load panorama” I can see that the browser is downloading the image. However the message “browser does not have the necessary WebGL support to display the panorama” is eventually displayed. This happens in both current (Dec 2014) versions of Firefox and Chrome. The Pannellum version is 2.1.

There are two differences between example.htm and pano.html. The files being displayed are .png rather than .jpg, and the sizes are 2.1Mb/25.4Mb for my preview/image, rather than 39kb/2.1Mb for the example.

I’m assuming that pannellum is encountering an error for some reason. Any ideas as to what the problem could be or suggestions as to what to change to prevent the problem?

Could it be the “graphics driver” problem mentioned above (Aug 11 2013), my image is 10904 x 1600. I have another, even bigger, of 23602 x 3000 that I’d like to display. Is there a way to determine if this is the problem (I dont know what the “console log” referred to in the post (Aug 10 2013) refers to)?

TIA.

By: Matthew Petroff

Matthew Petroff — Tue, 14 Oct 2014 00:14:07 +0000

In reply to George. I'm not sure what you're asking.