Camera in shader - Question

• Q. In a vertex shader the View matrix is passed as uniform parameter
• • How can you compute the position of the camera ?

• A usefull function to set a point of view is the standard look_at(eye, center, up)
• • - eye: position of the viewer
  • - center: position that the viewer is looking at
  • - up: a direction representing the "vertical direction" of the viewer.
• Q. How to compute the View matrix from the look_at parameters ?