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
|
/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell
*/
#include "xlib.h"
#include "xm_winsys.h"
#include <stdlib.h>
#include <assert.h>
/* Todo, replace all this with callback-structs provided by the
* individual implementations.
*/
enum mode {
MODE_TRACE,
MODE_BRW,
MODE_CELL,
MODE_SOFTPIPE
};
static enum mode get_mode()
{
if (getenv("XMESA_TRACE"))
return MODE_TRACE;
if (getenv("XMESA_BRW"))
return MODE_BRW;
#ifdef GALLIUM_CELL
if (!getenv("GALLIUM_NOCELL"))
return MODE_CELL;
#endif
return MODE_SOFTPIPE;
}
static void _init( void ) __attribute__((constructor));
static void _init( void )
{
enum mode xlib_mode = get_mode();
switch (xlib_mode) {
case MODE_TRACE:
xmesa_set_driver( &xlib_trace_driver );
break;
case MODE_BRW:
xmesa_set_driver( &xlib_brw_driver );
break;
case MODE_CELL:
xmesa_set_driver( &xlib_cell_driver );
break;
case MODE_SOFTPIPE:
xmesa_set_driver( &xlib_softpipe_driver );
break;
default:
assert(0);
break;
}
}
/***********************************************************************
*
* Butt-ugly hack to convince the linker not to throw away public GL
* symbols (they are all referenced from getprocaddress, I guess).
*/
extern void (*linker_foo(const unsigned char *procName))();
extern void (*glXGetProcAddress(const unsigned char *procName))();
extern void (*linker_foo(const unsigned char *procName))()
{
return glXGetProcAddress(procName);
}
|
