The reason is that the site is based on WebGL, and Firefox blocks WebGL, if the GPU (video card) driver is out of date or does not support WebGL.
The solution in Windows is to update GPU drivers either through the computer manufacturer's website or through the site of the GPU supplier — one of Intel, nVidia, or AMD/ATI, but not limited to only these.
Thorough care should be taken to match the driver to the correct display adapter model.
If that doesn't work, the GPU is too old, or EOL'd.
I strongly recommend not to force Firefox to use WebGL, because this move can damage hardware.The alternative is to use Google Chrome or Chromium, which probably uses a CPU-based workaround; but if either the graphics adapter or the CPU or both are too old, then rendering is unlikely to work, or is too slow.
> Explanation — contains minimum driver versions that support WebGL.
In addition, visit
about:supportin Firefox and the Graphics section therein, which also recommends the minimum driver version for WebGL (Direct2D, etc). The posting contains the same warnings about possible damage to hardware if Firefox were forced to use WebGL.
System requirementsThis table is incomplete. I've only gotten to test the website on three computers (with some reservations), and gotten an external report about another.
All this does not yet indicate much as to what the titular website's actual system requirements are. In notebook computers, the default video card used by any program in Windows is the integrated adapter, while nVidia software provides an option to launch programs using its own GPU.The Asus notebook with greater specifications falls below the threshold, whereas the Asus notebook with slightly lesser specs, an older operating system and updated video drivers shows the website nicely.
|ASUS K53SC notebook||Intel Core i3 2310M @ 2.1 GHz, dual-core||i:Intel HD Graphics 3000|
d:nVidia GeForce GT 520MX
|4 Gb DDR3, 665.1 MHz||Windows 7 SP1||Yes||Yes||Required driver updates: I had to upgrade both Intel and nVidia drivers through downloading them from their respective websites.|
|ASUS U46SV||Intel Core i5 2410M @ 2.3 GHz, dual-core||i: Intel HD Graphics 3000||8 Gb||Windows 10 (build unknown)||Slow||Not tested||Website opens, but performance is slow and jerky, and the fan began working intensely.|
|d:||nVidia GeForce GT 540M|
|ThinkPad R60e (0657-3WG)||Intel Core Duo T2400 (Centrino)||Mobile Intel 945GM Express||2 Gb DDR2 |
(an upgrade from just 512 Mb)
|Windows XP SP3||No||Slow / ok||Rendering was slow, but the site was usable.|
|hp dv5204ea notebook||Intel Celeron M 410 @ 1.46 GHz||Mobile Intel 945GM Express||1 Gb DDR2, 266 MHz||Windows XP SP3||No||Too slow||While I did upgrade the driver, its version is still less than required: The latest Windows XP driver for this GPU is 18.104.22.16826 (15.02.2008), but Firefox wants at least version "6.1400.1000.5218".|