[EFFECT] Scanlines

I was reading this

http://www.scirra.com/forum/viewtopic.php?f=7&t=5641&start=0

And did some testing and wound up with a fully fledged scanline effect.

Woops.

EDIT:

Parameters:

number of shown scanlines

width of scanlines (as coverage %)

intensity of the effect (0% intensity is invisible, 100% means black lines)

There's no offset control because I didn't feel it would be useful.

Nice one!

Just one thing: If you want the scanlines to stay with the sprite, when a sprite with this effect moves, you should use boxTop like so:

float darken = 2*abs((((Tex.y - boxTop)*tot) %1)-0.5);[/code:1d2q3v7p]

Thank you for this one, will play around with the code

yeah I left it out in purpose, since I figured if your scanlines are moving with your art you might as well bake it in (and no rotating, as the boxTop is the bounding box, the offset would go nuts anyway).

This effect is already used in a game I have almost finished and it looks pretty good

Great FX! Just what I needed for my game

could someone pleas post this effect, or i just can't find the link?

Link to old thread

thanks Tom!