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/** <title>NSOpenGLContext.m </title>
<abstract>Context for openGL drawing</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 Lesser 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; see the file COPYING.LIB.
If not, see <http://www.gnu.org/licenses/> or write to the
Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#import <Foundation/NSDebug.h>
#import "AppKit/NSOpenGL.h"
#import "GNUstepGUI/GSDisplayServer.h"
@implementation NSOpenGLContext
+ _classContext
{
Class glContextClass = [GSCurrentServer() glContextClass];
if (glContextClass == nil)
{
NSWarnMLog(@"Backend doesn't have any gl context");
return nil;
}
else
{
NSDebugMLLog(@"GLX", @"found something");
return glContextClass;
}
}
+ allocWithZone: (NSZone *) z
{
Class c = [self _classContext];
if (c)
return NSAllocateObject(c, 0, z);
else
return nil;
}
+ (void)clearCurrentContext
{
[[self _classContext] clearCurrentContext];
}
+ (NSOpenGLContext *)currentContext
{
/* FIXME - There doesn't seem to be a way to fix the following
* warning. */
return [[self _classContext] currentContext];
}
- (void *)CGLContextObj
{
[self subclassResponsibility: _cmd];
return NULL;
}
- (void)clearDrawable
{
[self subclassResponsibility: _cmd];
}
- (void)copyAttributesFromContext:(NSOpenGLContext *)context
withMask:(unsigned long)mask
{
[self subclassResponsibility: _cmd];
}
- (void)createTexture:(unsigned long)target
fromView:(NSView*)view
internalFormat:(unsigned long)format
{
[self subclassResponsibility: _cmd];
}
- (int)currentVirtualScreen
{
[self subclassResponsibility: _cmd];
return 0;
}
- (void)flushBuffer
{
[self subclassResponsibility: _cmd];
}
- (void)getValues:(long *)vals
forParameter:(NSOpenGLContextParameter)param
{
[self subclassResponsibility: _cmd];
}
- (id)initWithCGLContextObj:(void *)context
{
[self subclassResponsibility: _cmd];
return nil;
}
- (id)initWithFormat:(NSOpenGLPixelFormat *)format
shareContext:(NSOpenGLContext *)share
{
[self subclassResponsibility: _cmd];
return nil;
}
- (void)makeCurrentContext
{
[self subclassResponsibility: _cmd];
}
- (void)setCurrentVirtualScreen:(int)screen
{
[self subclassResponsibility: _cmd];
}
- (void)setFullScreen
{
[self subclassResponsibility: _cmd];
}
- (void)setOffScreen:(void *)baseaddr
width:(long)width
height:(long)height
rowbytes:(long)rowbytes
{
[self subclassResponsibility: _cmd];
}
- (void)setValues:(const long *)vals
forParameter:(NSOpenGLContextParameter)param
{
[self subclassResponsibility: _cmd];
}
- (void)setView:(NSView *)view
{
[self subclassResponsibility: _cmd];
}
- (void)update
{
[self subclassResponsibility: _cmd];
}
- (NSView *)view
{
[self subclassResponsibility: _cmd];
return nil;
}
@end
|
