Volumetric Light Scattering - GLSL

This video presents the volumetric lightning model writen in openGL/GLSL language. The presented program runs pretty fast for low detail setting (large blur) which is about 130fps, but even for this settings visual effects are still satisfying. For high details rendering fps can drop even below 10 frames, tested on NVIDIA GT 650M. Basicaly the algorithm is following: 1) Standard shadow mapping calculating the eye-fragment vector (v_sm) in shadow map frame. I draw this vector to another FBO during the st