Translate operation is rotating?

Question

cube
 [[ 1.  0.  0. 6.]
 [ 0.  1.  0.  0.]
 [ 0.  0.  1.  0.]
 [ 0.  0.  0.  1.]]

view
[[1. 0. 0. 0.]
 [0. 1. 0. 0.]
 [0. 0. 1. 0.]
 [0. 0. 0. 1.]]

final
[[ 1.  0.  0. 6.]
 [ 0.  1.  0.  0.]
 [ 0.  0.  1.  0.]
 [ 0.  0.  0.  1.]]

Hello! I have a cube and I'm trying to move it around. The above are the calculated matricies for the cube, viewport, and the combined matrix after multiplication. The result is this:

I'm not sure why it's being warped like this instead of scooting over a bit. Any idea?

Answer 1

Your matrix is row major, so you should transpose it in order to get behaviour you expect, since OpenGL memory layout is more column-major friendly, because translation is located in the memory at the fourth vector of the 4x4 matrix.