Pipet work around

catweasel · November 15, 2006, 12:02pm

I’m just makeing a quick visualisation patch for a LED project I might be working on, the matrix is 90x60 pixels, I’ve been using pipet on a file stream, pipet seems to be ouput values fine, but when I come to attach it to a spread of 90x60 quads thats represent my pixels they go black( same happens with just a file tex too). A spread of RGB or HSL nodes with the same spread count works fine on the quads.
So now I wondering whether a pixel shader would be a work around, basically I want to sample 1 pixel, and enlarge it enough to be visible in the visualisation, I’ve used a grid overlay, but because more than 1 pixel shows its not as defined as I want it. And I need it ready by the morning!

I could go with what I’ve got, but would prefer to get it looking a bit sharper, any ideas on a way forward?

Cheers

Cat

u7angel · November 15, 2006, 1:47pm

sharper…mmmm, check my patch, is this helping ?

pipet.zip (55.6 kB)

u7angel · November 15, 2006, 1:51pm

sorry…wrong patch, here another version
and kill the color io-box to gain performance

cat_pipet.zip (56.0 kB)

kalle · November 15, 2006, 2:06pm

cat,

did you see that “Draw slicewise” config pin at your quads?
Sounds to me like that.

joreg · November 15, 2006, 2:44pm

or for some reason the pipet outputs colors which are alpha=0 ? you could correct that using a SetAlpha node.

catweasel · November 16, 2006, 6:10pm

Sorry guys, my ISP has gone bust couldnt come back and check your replies, thanks for all that I’ll check it out later, Im in a cafe at the moment!

Thanks

Cat

Westbam · November 17, 2006, 4:48am

Don’t know why, but on my computer (GF5500 or something) I couldn’t make a DX9 texture out off a Renderer that has a backbuffer of 60 x 90. (when I projected the Renderer -> DX9 Texture -> Quad -> Renderer)

I could how ever make file textures with a backbuffer that are powers off two (64, 124… 1024) pixels.

Could be my Graphic card or vvvv… (getting a GF7600 soon!! :)

catweasel · November 17, 2006, 1:47pm

Ahh it was the alpha channel with the pipet!
Thanks for your help!

Cat

joreg · November 17, 2006, 2:42pm

right west. the gf5xxx series seem limited to power of two textures. we have noticed that already with dynamic-textures sometimes. get the gf7600 soon!