1 /**************************************************************************
2 *
3 * Copyright 2009-2010 VMware, Inc.
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
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:
13 *
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.
21 *
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
24 * of the Software.
25 *
26 *
27 **************************************************************************/
28
29 /**
30 * @file
31 * Softpipe/LLVMpipe support.
32 *
33 * @author Jose Fonseca <jfonseca@vmware.com>
34 */
35
36
37 #include <windows.h>
38
39 #include "util/u_debug.h"
40 #include "stw_winsys.h"
41 #include "gdi/gdi_sw_winsys.h"
42
43 #include "softpipe/sp_texture.h"
44 #include "softpipe/sp_screen.h"
45 #include "softpipe/sp_public.h"
46
47 #ifdef HAVE_LLVMPIPE
48 #include "llvmpipe/lp_texture.h"
49 #include "llvmpipe/lp_screen.h"
50 #include "llvmpipe/lp_public.h"
51 #endif
52
53
54 static boolean use_llvmpipe = FALSE;
55
56
57 static struct pipe_screen *
gdi_screen_create(void)58 gdi_screen_create(void)
59 {
60 const char *default_driver;
61 const char *driver;
62 struct pipe_screen *screen = NULL;
63 struct sw_winsys *winsys;
64
65 winsys = gdi_create_sw_winsys();
66 if(!winsys)
67 goto no_winsys;
68
69 #ifdef HAVE_LLVMPIPE
70 default_driver = "llvmpipe";
71 #else
72 default_driver = "softpipe";
73 #endif
74
75 driver = debug_get_option("GALLIUM_DRIVER", default_driver);
76
77 #ifdef HAVE_LLVMPIPE
78 if (strcmp(driver, "llvmpipe") == 0) {
79 screen = llvmpipe_create_screen( winsys );
80 }
81 #endif
82
83 if (screen == NULL) {
84 screen = softpipe_create_screen( winsys );
85 } else {
86 use_llvmpipe = TRUE;
87 }
88
89 if(!screen)
90 goto no_screen;
91
92 return screen;
93
94 no_screen:
95 winsys->destroy(winsys);
96 no_winsys:
97 return NULL;
98 }
99
100
101 static void
gdi_present(struct pipe_screen * screen,struct pipe_resource * res,HDC hDC)102 gdi_present(struct pipe_screen *screen,
103 struct pipe_resource *res,
104 HDC hDC)
105 {
106 /* This will fail if any interposing layer (trace, debug, etc) has
107 * been introduced between the state-trackers and the pipe driver.
108 *
109 * Ideally this would get replaced with a call to
110 * pipe_screen::flush_frontbuffer().
111 *
112 * Failing that, it may be necessary for intervening layers to wrap
113 * other structs such as this stw_winsys as well...
114 */
115
116 struct sw_winsys *winsys = NULL;
117 struct sw_displaytarget *dt = NULL;
118
119 #ifdef HAVE_LLVMPIPE
120 if (use_llvmpipe) {
121 winsys = llvmpipe_screen(screen)->winsys;
122 dt = llvmpipe_resource(res)->dt;
123 gdi_sw_display(winsys, dt, hDC);
124 return;
125 }
126 #endif
127
128 winsys = softpipe_screen(screen)->winsys,
129 dt = softpipe_resource(res)->dt,
130 gdi_sw_display(winsys, dt, hDC);
131 }
132
133
134 static const struct stw_winsys stw_winsys = {
135 &gdi_screen_create,
136 &gdi_present,
137 NULL, /* get_adapter_luid */
138 NULL, /* shared_surface_open */
139 NULL, /* shared_surface_close */
140 NULL /* compose */
141 };
142
143
144 BOOL WINAPI
DllMain(HINSTANCE hinstDLL,DWORD fdwReason,LPVOID lpReserved)145 DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved)
146 {
147 switch (fdwReason) {
148 case DLL_PROCESS_ATTACH:
149 stw_init(&stw_winsys);
150 stw_init_thread();
151 break;
152
153 case DLL_THREAD_ATTACH:
154 stw_init_thread();
155 break;
156
157 case DLL_THREAD_DETACH:
158 stw_cleanup_thread();
159 break;
160
161 case DLL_PROCESS_DETACH:
162 stw_cleanup_thread();
163 stw_cleanup();
164 break;
165 }
166 return TRUE;
167 }
168