The viewing volume is frustum-shaped and defined by the six parameters. Left,
right, top, and bottom specify coordinates in the near clipping plane where
the frustum edges intersect it, and the near and far parameters define the
forward distances of the view volume. The resulting volume can be vertically
and horizontally asymmetrical around the center of the near plane.
Creates a matrix used for perspective projections.
The viewing volume is frustum-shaped and defined by the six parameters. Left, right, top, and bottom specify coordinates in the near clipping plane where the frustum edges intersect it, and the near and far parameters define the forward distances of the view volume. The resulting volume can be vertically and horizontally asymmetrical around the center of the near plane.