Re: [GtkGLExt] stencil buffer

From: "Marcelo E. Magallon" <mmagallo debian org>
To: gtkglext-list gnome org
Subject: Re: [GtkGLExt] stencil buffer
Date: Wed, 15 Sep 2004 12:25:25 -0600

On Wed, Sep 15, 2004 at 07:45:04PM +0200, Daniel Godas wrote:

 > id like to use the data from the stencil buffer to generate a bitmap
 > mask for a gdkwindow (to change its shape), does anybody know how to
 > get this data?

 Tricky.

 Setup an appropiate stencil function after you have your stencil, and
 then draw a large monocromatico Quad, read the contexts of the color
 buffer with glReadPixels.

 HTH,

 Marcelo

Follow-Ups:
- Re: [GtkGLExt] stencil buffer
  - From: Daniel Godas

References:
- [GtkGLExt] stencil buffer
  - From: Daniel Godas

[Date Prev][Date Next] [Thread Prev][Thread Next] [Thread Index] [Date Index] [Author Index]