Quote:Original post by phantom
However, that said, looking at his inital 'lerp' code that needs adjusting as well, as he is lerping two vec4s, so he'll lerp the W coord there as well.
But wouldn't it be 1 in both cases, so interpolating between 1 and 1 isn't really doing any harm? So many ways, setting w to 1 after the scaling, using a vector for scaling with w=1, applying the scaling the old fashioned way through the matrix (unless too much extra effort).