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/** <title>NSOpenGLPixelFormat.m </title>
<abstract>use to choose the type of GL context</abstract>
Copyright (C) 1996 Free Software Foundation, Inc.
Author: Frederic De Jaeger
Date: 2002
This file is part of the GNUstep GUI Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <Foundation/NSString.h>
#include <Foundation/NSDebug.h>
#include "GNUstepGUI/GSDisplayServer.h"
#include "AppKit/NSOpenGL.h"
// @interface GSGLPixelFormat : NSOpenGLPixelFormat
// {}
// + _classContext;
// @end
// @implementation GSGLPixelFormat
// - (id)initWithAttributes:(NSOpenGLPixelFormatAttribute *)attribs
// {
// self = [[GSGLPixelFormat _classContext] alloc];
// return [self initWithAttributes: attribs];
// }
// @end
//static GSGLPixelFormat *temp;
@implementation NSOpenGLPixelFormat
+ _classPixelFormat
{
Class glPixelFormatClass = [GSCurrentServer() glPixelFormatClass];
if ( glPixelFormatClass == nil )
{
NSWarnMLog(@"Backend doesn't have any glPixelFormatClass");
return nil;
}
else
{
NSDebugMLLog(@"GLX", @"found a class %@", glPixelFormatClass);
return glPixelFormatClass;
}
}
// + (void) initialize
// {
// if ( self == [NSOpenGLPixelFormat class] )
// {
// temp = (GSGLPixelFormat *) NSAllocateObject([GSGLPixelFormat class], 0,
// NSDefaultMallocZone());
// }
// }
+ allocWithZone: (NSZone *) z
{
Class c = [self _classPixelFormat];
if ( c )
return NSAllocateObject(c, 0, z);
else
return nil;
}
- (void)getValues:(long *)vals
forAttribute:(NSOpenGLPixelFormatAttribute)attrib
forVirtualScreen:(int)screen
{
[self subclassResponsibility: _cmd];
}
- (id)initWithAttributes:(NSOpenGLPixelFormatAttribute *)attribs
{
[self subclassResponsibility: _cmd];
return nil;
}
- (int)numberOfVirtualScreens
{
[self subclassResponsibility: _cmd];
return 0;
}
@end
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