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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
/**************************************************************************
*
* 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 "pipe/p_compiler.h"
#include "util/u_debug.h"
#include "target-helpers/wrap_screen.h"
#include "state_tracker/xlib_sw_winsys.h"
#include "xm_public.h"
#include "state_tracker/st_manager.h"
/* advertise OpenGL support */
PUBLIC const int st_api_OpenGL = 1;
PUBLIC const struct st_module st_module_OpenGL = {
.api = ST_API_OPENGL,
.create_api = st_manager_create_api
};
/* Helper function to choose and instantiate one of the software rasterizers:
* cell, llvmpipe, softpipe.
*
* This function could be shared, but currently causes headaches for
* the build systems, particularly scons if we try. Long term, want
* to avoid having global #defines for things like GALLIUM_LLVMPIPE,
* GALLIUM_CELL, etc. Scons already eliminates those #defines, so
* things that are painful for it now are likely to be painful for
* other build systems in the future.
*
* Copies (full or partial):
* targets/libgl-xlib
* targets/graw-xlib
* targets/dri-swrast
* winsys/sw/drm
* drivers/sw
*
*/
#ifdef GALLIUM_SOFTPIPE
#include "softpipe/sp_public.h"
#endif
#ifdef GALLIUM_LLVMPIPE
#include "llvmpipe/lp_public.h"
#endif
#ifdef GALLIUM_CELL
#include "cell/ppu/cell_public.h"
#endif
static struct pipe_screen *
swrast_create_screen(struct sw_winsys *winsys)
{
const char *default_driver;
const char *driver;
struct pipe_screen *screen = NULL;
#if defined(GALLIUM_CELL)
default_driver = "cell";
#elif defined(GALLIUM_LLVMPIPE)
default_driver = "llvmpipe";
#elif defined(GALLIUM_SOFTPIPE)
default_driver = "softpipe";
#else
default_driver = "";
#endif
driver = debug_get_option("GALLIUM_DRIVER", default_driver);
#if defined(GALLIUM_CELL)
if (screen == NULL && strcmp(driver, "cell") == 0)
screen = cell_create_screen( winsys );
#endif
#if defined(GALLIUM_LLVMPIPE)
if (screen == NULL && strcmp(driver, "llvmpipe") == 0)
screen = llvmpipe_create_screen( winsys );
#endif
#if defined(GALLIUM_SOFTPIPE)
if (screen == NULL)
screen = softpipe_create_screen( winsys );
#endif
return screen;
}
/* Helper function to build a subset of a driver stack consisting of
* one of the software rasterizers (cell, llvmpipe, softpipe) and the
* xlib winsys.
*/
static struct pipe_screen *
swrast_xlib_create_screen( Display *display )
{
struct sw_winsys *winsys;
struct pipe_screen *screen = NULL;
/* Create the underlying winsys, which performs presents to Xlib
* drawables:
*/
winsys = xlib_create_sw_winsys( display );
if (winsys == NULL)
return NULL;
/* Create a software rasterizer on top of that winsys:
*/
screen = swrast_create_screen( winsys );
if (screen == NULL)
goto fail;
/* Inject any wrapping layers we want to here:
*/
return gallium_wrap_screen( screen );
fail:
if (winsys)
winsys->destroy( winsys );
return NULL;
}
static struct xm_driver xlib_driver =
{
.create_pipe_screen = swrast_xlib_create_screen,
.create_st_api = st_manager_create_api,
};
/* Build the rendering stack.
*/
static void _init( void ) __attribute__((constructor));
static void _init( void )
{
/* Initialize the xlib libgl code, pass in the winsys:
*/
xmesa_set_driver( &xlib_driver );
}
/***********************************************************************
*
* 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);
}
/**
* When GLX_INDIRECT_RENDERING is defined, some symbols are missing in
* libglapi.a. We need to define them here.
*/
#ifdef GLX_INDIRECT_RENDERING
#define GL_GLEXT_PROTOTYPES
#include "GL/gl.h"
#include "glapi/glapi.h"
#include "glapi/glapitable.h"
#include "glapi/glapidispatch.h"
#if defined(USE_MGL_NAMESPACE)
#define NAME(func) mgl##func
#else
#define NAME(func) gl##func
#endif
#define DISPATCH(FUNC, ARGS, MESSAGE) \
CALL_ ## FUNC(GET_DISPATCH(), ARGS);
#define RETURN_DISPATCH(FUNC, ARGS, MESSAGE) \
return CALL_ ## FUNC(GET_DISPATCH(), ARGS);
/* skip normal ones */
#define _GLAPI_SKIP_NORMAL_ENTRY_POINTS
#include "glapi/glapitemp.h"
#endif /* GLX_INDIRECT_RENDERING */
|