Re: [info-performer] Channel Color Filtering?

Date view Thread view Subject view Author view

From: Jürgen Wind (juergen.wind++at++wind-software.de)
Date: 11/07/2005 14:16:59

Hi Christopher,

I guess your best bet if you want both is to take the already rendered
image, subload it into a texture and render it fullscreen on a quad or
grid to the other channel, mapping the colors to grey with a fragment
shader. If you only want the black and white image, you might be able to
render it to a framebuffer object instead of a framebuffer to save the
texture subloading if your driver supports it.

Good luck,

        Juergen

Christopher D. Johnson wrote:
> Greetings all.
>
> I have a scene that I am building consisting of terrain with texture overlay as well as building and aircraft models. These all already have their own "color" when viewed with a white light. What I would like to do is to create a seperate channel that views this database/scene in black & white ONLY, ie no color. This would simulate a FLIR for example. So m y question is this: Is there a way to "filter" a channel for black and white only?
>
> Also, it some instances I'd like to reverse the polarity of the black and white, so when I press a button everything that was white would then be black and everything that was black would then be a shade of white. Where do I go about attacking this and is it possible? Thank you all in advance.
>
>
> Christopher D. Johnson
> AV-8B Harrier II Simulators
> ISEO Support Team
> Cherry Point, NC
> 252-466-4542
> 252-466-4538
>
> _______________________________________________
> Join Excite! - http://www.excite.com
> The most personalized portal on the Web!
>
>
> -----------------------------------------------------------------------
> List Archives, Info, FAQ: http://www.sgi.com/software/performer/
> Open Development Project: http://oss.sgi.com/projects/performer/
> Submissions: info-performer++at++sgi.com
> Admin. requests: info-performer-request++at++sgi.com
> -----------------------------------------------------------------------
>
> -----------------------------------------------------------------------
> List Archives, Info, FAQ: http://www.sgi.com/software/performer/
> Open Development Project: http://oss.sgi.com/projects/performer/
> Submissions: info-performer++at++sgi.com
> Admin. requests: info-performer-request++at++sgi.com
> -----------------------------------------------------------------------
>
>

Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Mon Nov 07 2005 - 14:17:02 PST