Reply To: Hybrid Scanlines

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February 25, 2018 at 10:10 PM #19585
Retrorunner
Participant

    @retrorunner Your photos look like your TV loses color with scanlines on. Is everything black and white when you set scanlines to 100%?

    With standard scanlines 100% I still have color but its a huge color loss which I thought is a sure thing due to substraction method of the standard scanlines option? With bortis scanlines method I have less color loss (especially when using less than 50% scnalines) because it uses multiplication method.

    Here is the explanation from borti about the difference between subtraction (standard scanlines) and multiplication (bortis scanlines) method translated from german in english:

    Personally, I find the scanlines on the OSSC not optimal because they are generated by subtraction.
    Better I find a generation by multiplication, which I do the rest of the N64A so.

    This has the effect that pixel brightness in the scanline is darkened relative to the reference pixel and not absolute. An absolute calculation even results in a discoloration.

    Simple example:
    Suppose we have a scanline strength of 50%. The reference pixel has RGB values of (255,120,176). The OSSC is stripped 127 everywhere and you get (128,0,49); So a discoloration.
    The N64A is multiplied by 0.5 everywhere and you get (127,60,88); so no discoloration, but a uniform darkening.