Re: post processing drawing

[Iulian Iliescu <iliescu iulian gmail com>]

You are right. I didn't explain the situation to good.

Unfortunatelly my machine directFB implementation doesn't supports chroma key.
SetSrcColorKey() has no effect.

As a work-around for this problem i tried to obtain the surface bits and manually verify all pixels and set them the proper alpha value (for magenta pixels). This i tried to do on "expose-event" signal, but
unfortunatelly this generates another paint and i enter in an infinite loop.

Maybe the right question is:
Is there another way to support ChromaKey than DirectFB's SetSrcColorKey() ?


Donny Viszneki wrote:

On Fri, Feb 6, 2009 at 2:01 AM, Iulian Iliescu <iliescu iulian gmail com> wrote:
  

To make transparent some area of the upper layer (browser) the area is
filled with a certain colour (FF00FF). When this happens i need to make that
area transparent, that the TV underneath will be visible.
    

This part is confusing. I am familiar with color keying overlays: you
say the color to use is "magenta" or #FF00FF.

First you say that you use a magenta color key to "make transparent
some area of the upper layer."

BUT THEN

You say "When this happens I need to make that area transparent."

Isn't it already transparent from using the magenta color key?

You're being confusing!