/**

  * $Id$

  *

  * Cocoa (NSOpenGL) video driver

  *

  * Copyright (c) 2005 Nathan Keynes.

  *

  * This program is free software; you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation; either version 2 of the License, or

  * (at your option) any later version.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  */

 #include <AppKit/NSOpenGL.h>

 #include "drivers/video_nsgl.h"

 #include "drivers/video_gl.h"

 #include "pvr2/glutil.h"

 static NSOpenGLContext *nsgl_context = nil;

 gboolean video_nsgl_init_driver( NSView *view, display_driver_t driver )

 {

     NSAutoreleasePool *pool = [NSAutoreleasePool new];

 	NSOpenGLPixelFormatAttribute attributes[] = {

 			NSOpenGLPFAWindow,

 //			NSOpenGLPFADoubleBuffer,

 			NSOpenGLPFADepthSize, (NSOpenGLPixelFormatAttribute)24,

 			(NSOpenGLPixelFormatAttribute)nil };

 	NSOpenGLPixelFormat *pixelFormat = 

 		[[[NSOpenGLPixelFormat alloc] initWithAttributes: attributes] autorelease];

 	nsgl_context = 

 		[[NSOpenGLContext alloc] initWithFormat: pixelFormat shareContext: nil];

 	[nsgl_context setView: view];

 	[nsgl_context makeCurrentContext];

 	[pool release];

 	if( gl_fbo_is_supported() ) {

 		gl_fbo_init(driver);

 	} else {

 		ERROR( "FBO not supported" );

 		return FALSE;

 	}

 	return TRUE;

 }

 void video_nsgl_update()

 {

     if( nsgl_context != nil ) {

         [nsgl_context update];

     }

 }

 void video_nsgl_make_current()

 {

     if( nsgl_context != nil ) {

         [nsgl_context makeCurrentContext];

     }

 }

 void video_nsgl_swap_buffers()

 {

     if( nsgl_context != nil ) {

         [nsgl_context flushBuffer];

     }

 }

 void video_nsgl_shutdown()

 {

 	if( nsgl_context != nil ) {

 		[NSOpenGLContext clearCurrentContext];

 		[nsgl_context release];

 		nsgl_context = nil;

 	}

 }