Hehe, I wish I could, but the mouse is locked, even in windowed mode :-)

BTW, the "vertical lines" artifacts doesn't show when setting
"unevenstretch 0" (but the picture doesn't take the whole screen anymore).

It's actually more than just "black vertical lines". I can actually seem some vertical patterns (depending on the picture underneath).

It still looks quite good anyway :-)

(damn, this 2xsai filter is still slow on my 9800 card... Damn 1080p)

-nomouse will keep the mouse unlocked.

Thanks Richard :-)

So here's a grab :
http://img187.imageshack.us/img187/2719/tokiscanlineshader.png

When resizing the window, it may look OK, or even stranger, like so :

http://img10.imageshack.us/img10/2921/tokishadersmall.png

I'm aware of this issue, but after a bit of testing, I don't think it's unique to GLSL or my shader. Here's a screenshot I took without GLSL or even bilinear filtering (look at the vertical lines along the diagonal):



The glitches appear or disappear depending on the window size.

Huh? I don't see anything wrong in that screenshot, cgwg.

The effect is much more obvious with -effect aperture2x4rb:

Meanwhile, did any of you find a way to work-around this "issue" ? (coloured vertical lines when using pixel shaders ?)