first work on starfield
use player speed, fix memory error
unlimited size starfield
remove unused variable
use polygonal stars with alphablending. fade in new stars. use a vertex array with structs. #260
improve code
fix hd3000
Merge branch 'starfield' of https://github.com/voxelinc/voxellancer into starfield
update glow
Merge branch 'master' of https://github.com/voxelinc/voxellancer into starfield

Conflicts:
	src/game.cpp
	src/game.h
	src/main.cpp
field from position delta
Merge branch 'master' of https://github.com/voxelinc/voxellancer into starfield

Conflicts:
	src/game.cpp
	src/game.h
	src/main.cpp
add abstraction for framebuffer
fix monoblit, render to buffer first. stereo is broken!
variable output buffer selection
update glow
add render architecture draft
improve rendering architecture
add named passes, insert after pass
layout is only available in 330