Labyrinth

Inital labyrinth version
github problems
Layrinth finished, high level optimisations

-wall mergeing
-acceleration structure (Sbvh works best)
-OGL interop (not done)
OGLinterop, graphics settings
AArectangle, texture filtering, GraphicsSettings refactoring
changed buffer format, tabyrinth resize

buffer format is now float4 (instead of byte4)
you can randomize labyrinth with L key
Graphics settings done, shadeing tweaks
Small fix
Github fix
Merge pull request #1 from Aloalo/master

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