Border AA working
Border AA working

Some improvements can be made:
- use the distance of the deflected ray from the original ray as a weight
- cap the max distance from the original ray
- the distance of ray deflected from original ray should be half a pixel in monitor space (when using 2 samples)
- the previous item must consider the distance from camera to point when rendering in perspective mode
- allow more samples be used per pixel (e.g. more than 2)... will have to divide pixel by the number of samples
- show UI to change parameters 
- visualization of surface normal using colors (must be a flag)
masbicudo/WebGL-Tutorials,masbicudo/WebGL-Tutorials