The final rendering phase only involves applying a
single image (fisheye) onto a 2D mesh and thus has very little performance penalty using today’s graphical
hardware. This final rendering phase is weakly dependent
on the display resolution and it is independent of the
scene complexity. As an example, for an SXGA+
projection system (1400x1050 pixels), an appropriate
fisheye resolution is 1536x1536 pixels. In this case the
final texture mapping onto an 80x60 resolution warping
mesh had less than 2% impact on the overall frame rate