Remove the light direction
Add EnvMap illumination with the skybox
Re-organize paintTheSky() function
Add uIsSkybox Uniform
Invert texture unity 5 and 6
Add an envmap cubemap
First test rendering of Envmap
2nd test on envmap rendering by simple copy
Add uSampleTest uniform
Add simple blur effect (too complexe)
Update blur computing to improve performances
Update Makefile (new cleandisplay cmd)
Use low-resolution for first blur
Add uInitialBlur uniform