[sharing is sharing] slitscan

ahhh, beautiful.
and so simple yet so mind boggling...

Hey, actually, I screwed that patch up.

The dimensions in the first texture should be 1 x 480, not 720 x 480.

Also, try playing with the values in rota, changing them from 1 or 0
to 0.5. Pretty nice effects that way.

b

On Mar 5, 2008, at 12:20 PM, Robert Ramirez wrote:

>
> ahhh, beautiful.
> and so simple yet so mind boggling...

barry threw
Media Art and Technology

San Francisco, CA
Work: 857-544-3967
Email: bthrew (at) gmail (dot) com
Web: www.barrythrew.com

real fun patch, on windows you only get green slit, removing uyvy color
space fixed that for this lowly windows youser

On Thu, Mar 6, 2008 at 12:02 AM, barry threw wrote:

> Hey, actually, I screwed that patch up.
>
> The dimensions in the first texture should be 1 x 480, not 720 x 480.
>
> Also, try playing with the values in rota, changing them from 1 or 0
> to 0.5. Pretty nice effects that way.
>
> b
>
> On Mar 5, 2008, at 12:20 PM, Robert Ramirez wrote:
>
> >
> > ahhh, beautiful.
> > and so simple yet so mind boggling...
>
> barry threw
> Media Art and Technology
>
> San Francisco, CA
> Work: 857-544-3967
> Email: bthrew (at) gmail (dot) com
> Web: www.barrythrew.com
>
>

or use the uyvy2rgba shader for cross platform-y uyvy texture upload
speedy goodyness - y -y stuff...

On Mar 5, 2008, at 5:15 PM, yair reshef wrote:

> real fun patch, on windows you only get green slit, removing uyvy
> color space fixed that for this lowly windows youser
>
> On Thu, Mar 6, 2008 at 12:02 AM, barry threw wrote:
> Hey, actually, I screwed that patch up.
>
> The dimensions in the first texture should be 1 x 480, not 720 x 480.
>
> Also, try playing with the values in rota, changing them from 1 or 0
> to 0.5. Pretty nice effects that way.
>
> b
>
> On Mar 5, 2008, at 12:20 PM, Robert Ramirez wrote:
>
> >
> > ahhh, beautiful.
> > and so simple yet so mind boggling...
>
> barry threw
> Media Art and Technology
>
> San Francisco, CA
> Work: 857-544-3967
> Email: bthrew (at) gmail (dot) com
> Web: www.barrythrew.com
>
>

very strange, nothing appears for me ?

faster maybe?

and the shader

Yes, but I can't get it to behave like an actual slitscan for me.

b

On Mar 6, 2008, at 3:57 PM, Tyler Nitsch wrote:

> faster maybe?
>
>
> #P window setfont "Sans Serif" 9.;
> #P window linecount 1;
> #P newex 70 194 90 9109513 jit.gl.texture Render;
> #P flonum 289 104 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P newex 245 144 92 9109513 pak param offset 0.;
> #P newex 59 119 195 9109513 jit.gl.slab Render @file
> cc.uyvy2rgba.lite.jxs;
> #P number 477 24 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P message 178 70 33 9109513 vol 0;
> #P message 147 70 30 9109513 read;
> #B color 6;
> #P newex 59 95 219 9109513 jit.qt.movie 720 480 @colormode uyvy
> @unique 1;
> #P newex 59 171 170 9109513 jit.gl.slab Render @file
> td.still_slide.jxs;
> #P newex 59 223 334 9109513 jit.gl.videoplane Render @interp 1
> @scale 1.333 1. 1. @colormode uyvy;
> #P newex 26 64 86 9109513 r 1_draw_movie;
> #P window linecount 2;
> #P message 439 96 101 9109513 ; 1_draw_movie bang;
> #P user jit.fpsgui 410 160 60 9109513 0;
> #P window linecount 1;
> #N vpatcher 20 74 210 238;
> #P window setfont "Sans Serif" 9.;
> #P window linecount 2;
> #P message 81 109 87 9109513 ; jitter cursor $1;
> #P window linecount 1;
> #P newex 81 89 31 9109513 == 0;
> #P outlet 9 107 15 0;
> #P window linecount 0;
> #P message 9 89 70 9109513 fullscreen $1;
> #P toggle 9 65 15 0;
> #P newex 9 46 38 9109513 sel 27;
> #P newex 9 26 40 9109513 key;
> #P connect 0 0 1 0;
> #P connect 1 0 2 0;
> #P connect 2 0 3 0;
> #P connect 3 0 4 0;
> #P connect 5 0 6 0;
> #P pop;
> #P newobj 410 193 63 9109513 p fullscreen;
> #P newex 410 65 68 9109513 t b b erase;
> #P window linecount 2;
> #P newex 410 212 276 9109513 jit.window Render @floating 1
> @depthbuffer 0 @fsmenubar 0 @fsaa 0 @sync 1 @idlemouse 1 @size 720
> 480;
> #P newex 410 127 319 9109513 jit.gl.render Render @blend_enable 1
> @depth_enable 0 @erase_color 0. 0. 0. 1. @scale 1.333 1 1 @ortho 2
> @camera 0 0 2;
> #P toggle 410 26 15 0;
> #P objectname qmetro;
> #P window linecount 1;
> #P newex 410 45 45 9109513 qmetro 5;
> #P window setfont "Sans Serif" 18.;
> #P comment 12 32 100 9109522 SlitScan;
> #P connect 9 0 12 0;
> #P connect 9 0 11 0;
> #P connect 12 0 16 0;
> #P fasten 14 0 12 0 183 90 64 90;
> #P fasten 13 0 12 0 152 90 64 90;
> #P connect 15 0 1 1;
> #P connect 1 0 5 0;
> #P connect 2 0 1 0;
> #P connect 17 0 11 0;
> #P connect 16 0 11 0;
> #P connect 11 0 10 0;
> #P connect 11 0 19 0;
> #P fasten 19 0 11 1 75 215 241 215 241 163 224 163;
> #P connect 18 0 17 2;
> #P fasten 5 2 3 0 473 90 415 90;
> #P connect 5 0 3 0;
> #P connect 3 0 7 0;
> #P connect 6 0 4 0;
> #P connect 5 1 8 0;
> #P window clipboard copycount 20;
>
> and the shader

barry threw
Media Art and Technology

San Francisco, CA
Work: 857-544-3967
Email: bthrew (at) gmail (dot) com
Web: www.barrythrew.com

Hey Barry,

The patch I posted recreates the exact effect you posted on my windows machine upon loading. Perhaps I'm missing something or your patch isn't working properly on my machine. My impression was a slitscan samples a scanline of a picture shifts it to the left and then samples the same scanline and keeps shifting. Can you clarify this for me? I really liked your patch and it gave me a bunch of cool ideas for shaders.