Although not part of the ISF 2.0 specification, to be
consistent with many official and unofficial examples of ISFs,
Vuo treats inputs of type 2D point specially. If an input has
type 2D point and does not have MIN
and
MAX
specified, then the input port value is
scaled from normalized coordinates to pixel coordinates when
used as a uniform in the GLSL code. For example, if an input
port has value (1.0, 0.5) and the output image is to be 1000 x
800 pixels, then the uniform has value (1000, 400).
3D and 4D points are not scaled.