circle shaped particles
add water particle normals rendering step #30
set viewport uniform, use RGB attachment for normals #30
add normals #30
Add linux/gcc cmake, fix some compilation/physx issues
fix fmod cmake for linux
add bluring + edge sensitive normal calculation
Fix some more issues, physx linking not working
fix linkage on windows
change camera start position #67
use center and lookAtVector for orientation instead of a quaternion. normal moving works now. #67
make rotation and pitch work. #67
using physx33 #66, seems to fix linking on linux
correct normal calculation
clean up to px3.3, set some compiler flags
fix some warnings with gcc
fix terrain creation on linux

use std:: prefix for abs, pow
ensure that drawing of (transparent) water after base terrain

use map and std::less implementation for TileID instead of unordered_map.
So transparent layers have to have the highest levels.
Discard water fragments below the corresponding base terrain tile
fix link+build+warnings with VisualStudio, again. #66