glsl2: Add and use new variable mode ir_var_temporary
[mesa/nouveau-pmpeg.git] / src / gallium / state_trackers / python / st_softpipe_winsys.c
blob8584bad467916070374d6597e2032558f36b6ae1
1 /**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
4 * All Rights Reserved.
5 *
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
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11 * permit persons to whom the Software is furnished to do so, subject to
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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,
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20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 * The above copyright notice and this permission notice (including the
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27 **************************************************************************/
29 #include "util/u_debug.h"
30 #include "softpipe/sp_public.h"
31 #include "llvmpipe/lp_public.h"
32 #include "state_tracker/sw_winsys.h"
33 #include "sw/null/null_sw_winsys.h"
34 #include "st_winsys.h"
37 struct pipe_screen *
38 st_software_screen_create(const char *driver)
40 struct sw_winsys *ws;
41 struct pipe_screen *screen = NULL;
43 if (!driver) {
44 const char *default_driver;
46 #if defined(HAVE_LLVMPIPE)
47 default_driver = "llvmpipe";
48 #elif defined(HAVE_SOFTPIPE)
49 default_driver = "softpipe";
50 #else
51 default_driver = "";
52 #endif
54 driver = debug_get_option("GALLIUM_DRIVER", default_driver);
57 ws = null_sw_create();
58 if(!ws)
59 return NULL;
61 #ifdef HAVE_LLVMPIPE
62 if (strcmp(driver, "llvmpipe") == 0) {
63 screen = llvmpipe_create_screen(ws);
65 #endif
67 #ifdef HAVE_SOFTPIPE
68 if (strcmp(driver, "softpipe") == 0) {
69 screen = softpipe_create_screen(ws);
71 #endif
73 if (!screen) {
74 ws->destroy(ws);
77 return screen;