1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/** <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 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/NSString.h>
#import <Foundation/NSData.h>
#import <Foundation/NSDebug.h>
#import "AppKit/NSOpenGL.h"
#import "GNUstepGUI/GSDisplayServer.h"
@implementation NSOpenGLPixelFormat
+ (Class) _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;
}
}
+ (id) allocWithZone: (NSZone*) z
{
Class c = [self _classPixelFormat];
if (c)
return NSAllocateObject(c, 0, z);
else
return nil;
}
- (void) getValues: (int*)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;
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
if ([aDecoder allowsKeyedCoding])
{
NSMutableData *attrs = [aDecoder decodeObjectForKey: @"NSPixelAttributes"];
if (attrs != nil)
{
NSOpenGLPixelFormatAttribute *glattrs;
unsigned char tmp = 0;
// Ensure that it is zero-terminated
[attrs appendBytes: &tmp length: sizeof(tmp)];
// FIXME: Deserialize an integer array
glattrs = (NSOpenGLPixelFormatAttribute *)[attrs mutableBytes];
return [self initWithAttributes: glattrs];
}
}
else
{
}
return self;
}
- (void) encodeWithCoder: (NSCoder*)aCoder
{
[self subclassResponsibility: _cmd];
}
@end
|
