Make envmap reflexion less blurry
Fix sqrt(int) in diffuseenvmap
Enable m_support_sdsm by default
First try to prevent #1566: kart chassis appears inside of terrain.
Fixed file extension.
Fix issue #1108
Fixed #1680 (notification shown at wrong place after changing resolution).
Added some asserts to narrow down #1685.
Fixed #1687 (time too long when using many karts in ftl)>
Fixed compilation.
Apply patch from upstream irrlicht which allow to compile it on windows using clang.
Disabled warning messages if the automatically created disabled
textures are not in the texture cache.
Fixed mingw compilation in release mode.
Use variable sigma for blur filter
Change fog equation