I have done a bit more research on this issue and it does appear to be specific to CasparCG.
I have downloaded the same version of libcef.dll and cefclient.exe from cefbuilds.com as is being used in CasparCG 2.0.7 (CEF 3.1750.1714) and that displays a test webpage perfectly ( http://thewebrocks.com/demos/3D-css-tester/
) I tried both the 32bit and 64bit versions of cefclient.exe to see if that makes any difference.
If I load the same page in CasparCG ( PLAY 1-1 [html] http://thewebrocks.com/demos/3D-css-tester/
) the animation at the top is flat (not 3d)
It is possible that this is a problem with my development PC so could somebody try loading the above page into CasparCG and see if it animates correctly in 3d? (you will need to try it in Chrome or some other browser as well so you know what it should look like!!!). I am hoping that it is just the crappy ATI chipset in my devel pc and that it works fine on our "proper" server?
If not, suspect that there may be a configuration option missing to enable 3d but it is possible that this was intentional???