1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
27 **************************************************************************/
33 #include "pipe/p_compiler.h"
34 #include "util/u_debug.h"
35 #include "target-helpers/wrap_screen.h"
36 #include "state_tracker/xlib_sw_winsys.h"
37 #include "xm_public.h"
39 #include "state_tracker/st_api.h"
40 #include "state_tracker/st_gl_api.h"
42 /* Helper function to choose and instantiate one of the software rasterizers:
43 * cell, llvmpipe, softpipe.
45 * This function could be shared, but currently causes headaches for
46 * the build systems, particularly scons if we try. Long term, want
47 * to avoid having global #defines for things like GALLIUM_LLVMPIPE,
48 * GALLIUM_CELL, etc. Scons already eliminates those #defines, so
49 * things that are painful for it now are likely to be painful for
50 * other build systems in the future.
52 * Copies (full or partial):
61 #ifdef GALLIUM_SOFTPIPE
62 #include "softpipe/sp_public.h"
65 #ifdef GALLIUM_LLVMPIPE
66 #include "llvmpipe/lp_public.h"
70 #include "cell/ppu/cell_public.h"
73 #ifdef GALLIUM_GALAHAD
74 #include "galahad/glhd_public.h"
77 static struct pipe_screen
*
78 swrast_create_screen(struct sw_winsys
*winsys
)
80 const char *default_driver
;
82 struct pipe_screen
*screen
= NULL
;
84 #if defined(GALLIUM_CELL)
85 default_driver
= "cell";
86 #elif defined(GALLIUM_LLVMPIPE)
87 default_driver
= "llvmpipe";
88 #elif defined(GALLIUM_SOFTPIPE)
89 default_driver
= "softpipe";
94 driver
= debug_get_option("GALLIUM_DRIVER", default_driver
);
96 #if defined(GALLIUM_CELL)
97 if (screen
== NULL
&& strcmp(driver
, "cell") == 0)
98 screen
= cell_create_screen( winsys
);
101 #if defined(GALLIUM_LLVMPIPE)
102 if (screen
== NULL
&& strcmp(driver
, "llvmpipe") == 0)
103 screen
= llvmpipe_create_screen( winsys
);
106 #if defined(GALLIUM_SOFTPIPE)
108 screen
= softpipe_create_screen( winsys
);
111 #if defined(GALLIUM_GALAHAD)
113 struct pipe_screen
*galahad_screen
= galahad_screen_create(screen
);
115 screen
= galahad_screen
;
122 /* Helper function to build a subset of a driver stack consisting of
123 * one of the software rasterizers (cell, llvmpipe, softpipe) and the
126 static struct pipe_screen
*
127 swrast_xlib_create_screen( Display
*display
)
129 struct sw_winsys
*winsys
;
130 struct pipe_screen
*screen
= NULL
;
132 /* Create the underlying winsys, which performs presents to Xlib
135 winsys
= xlib_create_sw_winsys( display
);
139 /* Create a software rasterizer on top of that winsys:
141 screen
= swrast_create_screen( winsys
);
145 /* Inject any wrapping layers we want to here:
147 return gallium_wrap_screen( screen
);
151 winsys
->destroy( winsys
);
156 static struct xm_driver xlib_driver
=
158 .create_pipe_screen
= swrast_xlib_create_screen
,
159 .create_st_api
= st_gl_api_create
,
163 /* Build the rendering stack.
165 static void _init( void ) __attribute__((constructor
));
166 static void _init( void )
168 /* Initialize the xlib libgl code, pass in the winsys:
170 xmesa_set_driver( &xlib_driver
);
174 /***********************************************************************
176 * Butt-ugly hack to convince the linker not to throw away public GL
177 * symbols (they are all referenced from getprocaddress, I guess).
179 extern void (*linker_foo(const unsigned char *procName
))();
180 extern void (*glXGetProcAddress(const unsigned char *procName
))();
182 extern void (*linker_foo(const unsigned char *procName
))()
184 return glXGetProcAddress(procName
);
189 * When GLX_INDIRECT_RENDERING is defined, some symbols are missing in
190 * libglapi.a. We need to define them here.
192 #ifdef GLX_INDIRECT_RENDERING
194 #define GL_GLEXT_PROTOTYPES
196 #include "glapi/glapi.h"
197 #include "glapi/glapitable.h"
199 #if defined(USE_MGL_NAMESPACE)
200 #define NAME(func) mgl##func
202 #define NAME(func) gl##func
205 #define DISPATCH(FUNC, ARGS, MESSAGE) \
206 GET_DISPATCH()->FUNC ARGS
208 #define RETURN_DISPATCH(FUNC, ARGS, MESSAGE) \
209 return GET_DISPATCH()->FUNC ARGS
211 /* skip normal ones */
212 #define _GLAPI_SKIP_NORMAL_ENTRY_POINTS
213 #include "glapi/glapitemp.h"
215 #endif /* GLX_INDIRECT_RENDERING */