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 "state_tracker/xlib_sw_winsys.h"
35 #include "util/u_debug.h"
36 #include "softpipe/sp_public.h"
37 #include "llvmpipe/lp_public.h"
38 #include "cell/ppu/cell_public.h"
39 #include "target-helpers/wrap_screen.h"
40 #include "xm_public.h"
42 /* advertise OpenGL support */
43 PUBLIC
const int st_api_OpenGL
= 1;
46 /* Helper function to build a subset of a driver stack consisting of
47 * one of the software rasterizers (cell, llvmpipe, softpipe) and the
50 * This function could be shared, but currently causes headaches for
51 * the build systems, particularly scons if we try. Long term, want
52 * to avoid having global #defines for things like GALLIUM_LLVMPIPE,
53 * GALLIUM_CELL, etc. Scons already eliminates those #defines, so
54 * things that are painful for it now are likely to be painful for
55 * other build systems in the future.
57 static struct pipe_screen
*
58 swrast_xlib_create_screen( Display
*display
)
60 struct sw_winsys
*winsys
;
61 struct pipe_screen
*screen
= NULL
;
63 /* Create the underlying winsys, which performs presents to Xlib
66 winsys
= xlib_create_sw_winsys( display
);
70 /* Create a software rasterizer on top of that winsys:
72 #if defined(GALLIUM_CELL)
74 !debug_get_bool_option("GALLIUM_NO_CELL", FALSE
))
75 screen
= cell_create_screen( winsys
);
78 #if defined(GALLIUM_LLVMPIPE)
80 !debug_get_bool_option("GALLIUM_NO_LLVM", FALSE
))
81 screen
= llvmpipe_create_screen( winsys
);
85 screen
= softpipe_create_screen( winsys
);
90 /* Inject any wrapping layers we want to here:
92 return gallium_wrap_screen( screen
);
96 winsys
->destroy( winsys
);
101 struct xm_driver xlib_driver
=
103 .create_pipe_screen
= swrast_xlib_create_screen
,
107 /* Build the rendering stack.
109 static void _init( void ) __attribute__((constructor
));
110 static void _init( void )
112 /* Initialize the xlib libgl code, pass in the winsys:
114 xmesa_set_driver( &xlib_driver
);
118 /***********************************************************************
120 * Butt-ugly hack to convince the linker not to throw away public GL
121 * symbols (they are all referenced from getprocaddress, I guess).
123 extern void (*linker_foo(const unsigned char *procName
))();
124 extern void (*glXGetProcAddress(const unsigned char *procName
))();
126 extern void (*linker_foo(const unsigned char *procName
))()
128 return glXGetProcAddress(procName
);
133 * When GLX_INDIRECT_RENDERING is defined, some symbols are missing in
134 * libglapi.a. We need to define them here.
136 #ifdef GLX_INDIRECT_RENDERING
138 #define GL_GLEXT_PROTOTYPES
140 #include "glapi/glapi.h"
141 #include "glapi/glapitable.h"
142 #include "glapi/glapidispatch.h"
144 #if defined(USE_MGL_NAMESPACE)
145 #define NAME(func) mgl##func
147 #define NAME(func) gl##func
150 #define DISPATCH(FUNC, ARGS, MESSAGE) \
151 CALL_ ## FUNC(GET_DISPATCH(), ARGS);
153 #define RETURN_DISPATCH(FUNC, ARGS, MESSAGE) \
154 return CALL_ ## FUNC(GET_DISPATCH(), ARGS);
156 /* skip normal ones */
157 #define _GLAPI_SKIP_NORMAL_ENTRY_POINTS
158 #include "glapi/glapitemp.h"
160 #endif /* GLX_INDIRECT_RENDERING */