[mythtv] New improved snow falling effect added to the MythCenterXMAS theme for master users

[Paul Harrison]

The MythCenterXMAS theme has been updated to make use of the new 
procedural MythUI widget that can run OpenGL shader programs to improve 
the snow effect so it has a smooth scrolling appearance rather than the 
rather jerky one the animated gif image shows.


If you want to see the new effect you need a MythTV master build from 
today that has https://github.com/MythTV/mythtv/commit/946b344279 and 
you need the updated MythCenterXMAS theme version 1.15 that has been 
updated to take advantage of the new procedural texture support.


Unfortunately since the procedural texture support is still experimental 
it is unlikely to be backported to fixes/31 but you can still see the 
old animated gif version :)

Paul H.