Re: [GtkGLExt] OpenGL widget fills entire window on OS X [was: OS X Quartz developers...]

[Andrey Gruzdev <gruzdev ntmdt ru>]

Hello.
The problem with non-OpenGL widgets takes place only with new GTK versions.
Then I wrote this patch and test it with gtk 2.14 beta framework build and some later builds (built with jhbuild script) this problem does not appear.
Unfortunately I have not free time now but I hope to get it soon and spend some for this project.
There are no Low Level API used in my patch. Only NSOpenglView, NSOpenglContext and some related functions. 

Andrey.

On 22.11.2009, at 20:27, Jack Skellington wrote:

> The problem seems to be that when rendering to the OpenGL capable
> widget it expands to fill the entire window.
> If I resize the window the gtk widgets are visible for a split second
> before they are covered with white background.
> But the OpenGL rendering works fine otherwise.
> 
> This is my main rendering loop:
> 
> gboolean G_MODULE_EXPORT render(gpointer data){
> 	
> 	GtkWidget *widget = GTK_WIDGET(data);
> 	
> 	GdkGLContext *glcontext = gtk_widget_get_gl_context (widget);
> 	GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (widget);
> 	
> 	if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext))
> 		return FALSE;
> 	
> 	
> 	glClearColor (1.0, 1.0, 1.0, 1.0);
> 	glClearDepth (1.0);
> 	glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
> 	
> 	engineIteration();
> 	
> 	gdk_gl_drawable_swap_buffers (gldrawable);
> 	
> 	gdk_gl_drawable_gl_end (gldrawable);
> 
> 	return TRUE;
> }
> 
> Regards
> Jacob K
> 
> On Sun, Nov 22, 2009 at 11:49 AM, Jacob Juul Kolding <jacob juvul com> wrote:
>> On Nov 21, 2009, at 6:30 AM, Braden McDaniel wrote:
>> 
>> On Sat, 2009-11-21 at 02:33 +0100, Jack Skellington wrote:
>> 
>> Hi all!
>> 
>> I'm currently working on porting a commercial Gtk+ OpenGL App to Snow
>> 
>> Leopard using the actively developed and maintained Gtk+ OS X Quartz
>> 
>> backend. My last problem now is that GtkGlExt only works with X11. I'm
>> 
>> not familiar with the Low Level OS X API's, so I'd properly wouldn't
>> 
>> be able to write the backend myself but I think it would be awesome if
>> 
>> someone here could help with the native OS X backend, getting closer
>> 
>> to a fully supported native Gtk+ :)
>> 
>> This patch is probably a good starting point:
>> 
>>        https://sourceforge.net/tracker/?func=detail&aid=2750584&group_id=54333&atid=473436
>> 
>> I'll try to get back to reviewing this soon; though it might have to
>> wait until I get my KVM back from RMA.
>> 
>> Do let me know how it goes for you.
>> 
>> I managed to apply the patch and compile both GtkGLExt and my app, but when
>> I start my app
>> the main windows is complete empty of any gtk widgets (white background
>> everywhere), the only thing thats visible is the borders I draw in the
>> opengl area, but
>> when I move the mouse up the the invisible file menu I'm able to open other
>> (non opengl) windows which works as expected??
>> Regards
>> Jacob Kolding
>> dacobi juvul com
>> 
>> --
>> Braden McDaniel <braden endoframe com>
>> 
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