Thanks, I found quite some bits as well. The values found
here work good for a start in green/magenta. Needs some fine tuning for everyone's screen and glasses, though.
In short, this is what to put in your anaglyph.psh:
Out.Colour.r = L.r * -0.062f + L.g * -0.158f + L.b * -0.039f + R.r * 0.529f + R.g * 0.705f + R.b * 0.024f;
Out.Colour.g = L.r * 0.284f + L.g * 0.668f + L.b * 0.143f + R.r * -0.016f + R.g * -0.015f + R.b * -0.065f;
Out.Colour.b = L.r * -0.015f + L.g * -0.027f + L.b * 0.021f + R.r * 0.009f + R.g * 0.075f + R.b * 0.937f;
Out.Colour.a = 1.0f;
Edit: @Neilser: Great minds think alike, don't they?
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