Re: Color space problem - QCRenderer not rendering tranparency

• Subject: Re: Color space problem - QCRenderer not rendering tranparency
• From: "Raphael Sebbe" <email@hidden>
• Date: Mon, 29 May 2006 10:20:33 +0200
• Delivered-to: email@hidden
• Delivered-to: email@hidden
• Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=gJGygXxyZ+dnDVEI0FiBIa77OSKMOGWvrd0biv3rNd0HFiQip0qYE2n2W4sU/QXlLaIhjv6mMHt+Yn8xT60w4OkZNBW5DyVheE+6NO5ESbJPAAc6UPsQo/9pP2miolRo1ZoNPNmt1XedvUtZEBK+n5jCzZojDHEczHEmNQvLg3E=

Well, it does not show up for all compositions, and mostly works OK. I
have the problem with the default composition, removing QC icon as
billboard input and publishing it instead (the billboard bkg remains
white where it should be transparent). For other compositions with
just a CIFilter conected to a billboard, it did work right. I'll
investigate that later on.

Raphael

> I am creating a CIImage programatically from a GL texture using either
> NULL as color space or CGColorSpaceCreateDeviceRGB().
>
> This CIImage is set as input of a QCRenderer (published input), which
> renders that image.
>
> When I use NULL as color space, the rendered output preserves
> transparency of input image. When I use the colorspace, the
> transparent regions become opaque. I need the colorspace because
> otherwise, colors are not OK (too light). Is there any problem in my
> setup ? Or is it a bug ?

I don't think you should observe such a difference in rendering. Does
it happen with a minimal composition like just a billboard?

________________________________________________________
Pierre-Olivier Latour                                   email@hidden
Quartz Composer Team                            Apple Computer, Inc.

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Quartzcomposer-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/quartzcomposer-dev/email@hidden

• Prev by Date: Re: Quartz Composer "pausing" when opening/closing a menu
• Next by Date: Re: Quartz Composer "pausing" when opening/closing a menu
• Previous by thread: Re: Color space problem - QCRenderer not rendering tranparency
• Next by thread: Scrolling ticker help.
• Index(es):
  • Date
  • Thread