funkeejeffou

09-19-2007, 06:27 AM

Hi all,

I was wondering if the refract instruction in GLSL is accurate from a physical point of view.

I mean that, is the vectorial approach used to compute the refraction vector in GLSL gives the same result as if we applied the law of Snell-Descartes in Physics ?

If it is an approximation, does someone know its quality ?

Cheers,

Jeff.

I was wondering if the refract instruction in GLSL is accurate from a physical point of view.

I mean that, is the vectorial approach used to compute the refraction vector in GLSL gives the same result as if we applied the law of Snell-Descartes in Physics ?

If it is an approximation, does someone know its quality ?

Cheers,

Jeff.