Re: How I can do Double Buffer whether OpenGl Ext?

2010-02-10 Thread Carlos Pereira 

And then you will have a expose callback similar to this:

int my_expose (GtkWidget *widget, GdkEventExpose *event, void *data)
{
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (widget);
GdkGLContext *glcontext = gtk_widget_get_gl_context (widget);
app_window *my_window = APP_CAST_WINDOW data;

/*
* draw only last expose
*/

if (event->count > 0) return TRUE;

if (gdk_gl_drawable_gl_begin (gldrawable, glcontext) == TRUE)
 {
 draw_my_window (my_window);

 if (gdk_gl_drawable_is_double_buffered (gldrawable) == TRUE)
   gdk_gl_drawable_swap_buffers (gldrawable);
 else
   glFlush ();

 glGetError ();

 gdk_gl_drawable_gl_end (gldrawable);
 }

return TRUE;
}

Regards,
Carlos

>From the logo example:


/*

 * Configure OpenGL-capable visual.
 */

/* Try double-buffered visual */

glconfig = gdk_gl_config_new_by_mode (GDK_GL_MODE_RGB|
  GDK_GL_MODE_DEPTH  |
  GDK_GL_MODE_DOUBLE);
if (glconfig == NULL)
{
g_print ("*** Cannot find the double-buffered visual.\n");
g_print ("*** Trying single-buffered visual.\n");

/* Try single-buffered visual */

glconfig = gdk_gl_config_new_by_mode (GDK_GL_MODE_RGB   |
  GDK_GL_MODE_DEPTH);
if (glconfig == NULL)
{
g_print ("*** No appropriate OpenGL-capable visual found.\n");
exit (1);
}
}

..


/* Set OpenGL-capability to the widget. */
gtk_widget_set_gl_capability (drawing_area,
  glconfig,
  NULL,
  TRUE,
  GDK_GL_RGBA_TYPE);




This function first tries to create a glconfig using double buffered, if fails, uses single buffer). This works on OS X 10.6 Snow Leopard. 





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Date: Tue, 9 Feb 2010 04:41:12 -0300
Subject: How I can do Double Buffer whether OpenGl Ext?
From: grojas@gmail.com
To: gtk-app-devel-list@gnome.org

Hi,

I'm trying to do a double buffer with pixbuf and draw area, whether to use
OpenGL Ext, but i don't know if it is posible or not.

Any idea?

Thanks.

Gustavo R.
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RE: How I can do Double Buffer whether OpenGl Ext?

2010-02-09 Thread Shawn Bakhtiar 


>From the logo example:


/*
 * Configure OpenGL-capable visual.
 */

/* Try double-buffered visual */
glconfig = gdk_gl_config_new_by_mode (GDK_GL_MODE_RGB|
  GDK_GL_MODE_DEPTH  |
  GDK_GL_MODE_DOUBLE);
if (glconfig == NULL)
{
g_print ("*** Cannot find the double-buffered visual.\n");
g_print ("*** Trying single-buffered visual.\n");

/* Try single-buffered visual */
glconfig = gdk_gl_config_new_by_mode (GDK_GL_MODE_RGB   |
  GDK_GL_MODE_DEPTH);
if (glconfig == NULL)
{
g_print ("*** No appropriate OpenGL-capable visual found.\n");
exit (1);
}
}

..

/* Set OpenGL-capability to the widget. */
gtk_widget_set_gl_capability (drawing_area,
  glconfig,
  NULL,
  TRUE,
  GDK_GL_RGBA_TYPE);



This function first tries to create a glconfig using double buffered, if fails, 
uses single buffer). This works on OS X 10.6 Snow Leopard. 




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> Date: Tue, 9 Feb 2010 04:41:12 -0300
> Subject: How I can do Double Buffer whether OpenGl Ext?
> From: grojas@gmail.com
> To: gtk-app-devel-list@gnome.org
> 
> Hi,
> 
> I'm trying to do a double buffer with pixbuf and draw area, whether to use
> OpenGL Ext, but i don't know if it is posible or not.
> 
> Any idea?
> 
> Thanks.
> 
> Gustavo R.
> ___
> gtk-app-devel-list mailing list
> gtk-app-devel-list@gnome.org
> http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
  
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