Clément Foucault
3cb2b2956b
Using GL_RG16I texture for the hit coordinates increase tremendously the precision of the hit. The sign of the integer is used to 2 flags (has_hit and is_planar). We do not store the depth and retrieve it from the depth buffer (increasing bandwith by +8bit/px). The PDF is stored into another GL_R16F texture. We remove the raycount for simplicity and to reduce compilation time (less branching in refraction shader).