Fullscreen mode - F11, or Auto Fullscreen
+ browser.fullscreen.autohide false
OpenGL compositing and multiprocess in the browser are not compatible.
I tested:
FX5200 OpenGL - winXP and 7, FF47, very slowly, non-hardware (CPU) OpenGL
FX5200 DirectX9 - WinXP, FF48, fast, driver 175.16, layers.acceleration.force-enabled, layers.max-active 1 or 2, layers.enable-tiles true for multiprocess. WebGL - webgl.force-enabled, webgl.disable-angle
GF6100 OpenGL - WinXP, FF47, fast, hifts parts of GUI up (fix F11 + browser.fullscreen.autohide false). WebGL ANGLE
GF6100 DirectX9 - WinXP, driver 307.83, FF52, fast. WebGL ANGLE
GTX260 OpenGL - Win7, FF58 and Waterfox Classic (FF56), fast, hifts parts of GUI up (fix Auto Fullscreen + browser.fullscreen.autohide false). WebGL ANGLE
ATI Radeon x700 OpenGL - driver Catalyst 10.2, WinXP, FF47, fast, hifts parts of GUI up (fix F11 + browser.fullscreen.autohide false). WebGL - webgl.force-enabled, webgl.disable-angle
ATI Radeon x700, Radeon 9550 DirectX9 - WinXP, FF52, compositing Basic (no). WebGL - webgl.force-enabled, webgl.disable-angle
Intel GMA3150 OpenGL - WinXP, FF47, compositing Basic (no).
Radeon 9550 OpenGL - WinXP/7 non test
Maybe the developer MyPal (Feodor2/zzz528) will be fix OpenGL http://forum.ru-board.com/topic.cgi?forum=5&topic=50547&start=160#15
developer "radio.garden"