Comments on: Pixel Bender Grayscale Filter

By: Anonymous

Anonymous — Tue, 12 Jan 2010 12:29:22 +0000

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By: Pixel Bender ?2?? ?? lineTo ????????????????? | Yellow Soup

Pixel Bender ?2?? ?? lineTo ????????????????? | Yellow Soup — Fri, 31 Oct 2008 19:13:54 +0000

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By: saeed ashour

saeed ashour — Sun, 21 Sep 2008 20:40:34 +0000

Cool

By: mikechambers

mikechambers — Fri, 19 Sep 2008 21:41:37 +0000

@kode80

Yes, you are correct. (thats what I get for picking up Pixel Bender for the first time in a long time, and not get up to speed on all of the changes).

However, Pixel Bender filters are still multi-threaded in the Flash Player, so, especially on larger images, that could lead to a significant boost.

Check out tinic’s post for more info:

http://www.kaourantin.net/2008/05/adobe-pixel-bender-in-flash-player-10.html

I am going to put together a simple example shortly to test the differences in speed.

mike chambers

mesh@adobe.com

By: kode80

kode80 — Fri, 19 Sep 2008 19:53:48 +0000

I was under the impression that the Flash Pixel Bender implementation was 100% software based?

By: mikechambers

mikechambers — Fri, 19 Sep 2008 15:49:14 +0000

Iain,

That is a good question. In optimum circumstances, I think it would be significantly faster as it can take advantage of hardware / GPU acceleration to perform the transformation.

However, i am not sure what the difference would be on a normal sized image. I might try and do some tests later today (and I post them here or in a seperate post).

mike chambers

mesh@adobe.com

By: Iain

Iain — Fri, 19 Sep 2008 08:58:26 +0000

Does this render faster or slower than other ways of desaturating an image, e.g. using a ColorMatrixFilter?

By: Phillip Kerman

Phillip Kerman — Thu, 18 Sep 2008 15:46:52 +0000

Cool… once I REALLY figure out pixelbender I’ll probably agree this is “simple”. I’m just over “learning” color matrixes… like this grayscale:

import flash.filters.ColorMatrixFilter;
var cm:ColorMatrixFilter = new ColorMatrixFilter();

cm.matrix = new Array(
0.3086, 0.609, 0.282, 0, 0,
0.3086, 0.609, 0.282, 0, 0,
0.3086, 0.609, 0.282, 0, 0,
0, 0, 0, 1, 0);

someClip.filters = [cm];