New methods: */

Intersects a line segment with the current depth image in camera space; returns intersection point's parameter along line

Uploads the water texture transformation into the GLSL 4x4 matrix at the given uniform location

New methods: */

Removes the given render function from the list but does not delete it

Requests reading back the current bathymetry grid from the GPU during the next rendering cycle; returns true if request can be granted

Called to receive a new raw depth frame