Custom PPSSPP shaders

[LunaMoo]

It's a simple multiplier, so just set it to 1.0 and it will not exist;p.

The point of it's existence is simple - even nearly transparent scanlines will make the screen darker and most people will want to compensate the colors - separate - from scanlines.

I belive scanline filters will usually do similar thing, without even providing an option, through by smaller value or some more complex math. I'm not really a fan of scanline filters, made this one just to provide a basic scanlines that doesn't suffer from sinusoidal pattern(every x line doubled) and I really disliked how dark it get's.

Edit: I had to check those scanlines to remember how it works and instead of removing an option, I added new one to it;p "noGradient". The way I made it initially was really simple via gradient affecting both scanlines and space between which possibly required a bit higher color compensation, so now it can be disabled turning every "scanline" into a sharp line without affecting the space between them, it's still too dark through ~ I just don't like scanlines;p.