Stereo

• stereo (boolean, default: off) can be used to determine whether or not stereo is active.

• stereo_angle (float, default: 2.1) affects stereo separation. stereo_angle is a scaling factor applied to the natural angular difference which would occur between two eyes at that distance, both looking at the objective.

• stereo_double_pump_mono (boolean, default: off) controls whether or not stereo contexts are used to render monoscopic contexts (required for some systems).

• stereo_mode (integer, default: 1) can be used to determine the current stereo mode:
  • 1 = quadbuffer
  • 2 = cross eye
  • 3 = wall eye
  • 4 = geowall
  • 5 = sidebyside
  • 6 = byrow
  • 7 = bycolumn
  • 8 = checkerboard
  • 9 = custom
  • 10 = anaglyph (red/cyan)
  • 11 = dynamic
  • 12 = clonedynamic

• stereo_shift (float, default: 2.0) affects stereo separation. stereo_shift is the separation between the two cameras observing the image, expressed as a % of the distance from the objective.

• anaglyph_mode (integer, default: 4) implements the following 4 anaglyph modes (see also Anaglyph stereo mode settings)
  • 0 = true anaglyph
  • 1 = gray
  • 2 = color
  • 3 = half-color
  • 4 = optimized (default)

Generally speaking stereo_shift is the main depth control parameter, and stereo_angle should remain close to 2 in order to generate “correct” stereo geometry. However, adjusting stereo_angle can reduce ghosting and change the apparent Z location of the objective.

translation = distance * (stereo_shift/100)

rotation = (stereo_angle/2) * (arctan(stereo_shift/100))