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 "stw_device.h"
42 #include "gdi/gdi_sw_winsys.h"
43
44 #include "softpipe/sp_texture.h"
45 #include "softpipe/sp_screen.h"
46 #include "softpipe/sp_public.h"
47
48 #ifdef HAVE_LLVMPIPE
49 #include "llvmpipe/lp_texture.h"
50 #include "llvmpipe/lp_screen.h"
51 #include "llvmpipe/lp_public.h"
52 #endif
53
54 #ifdef HAVE_SWR
55 #include "swr/swr_public.h"
56 #endif
57
58 static boolean use_llvmpipe = FALSE;
59 static boolean use_swr = FALSE;
60
61 static struct pipe_screen *
gdi_screen_create(void)62 gdi_screen_create(void)
63 {
64 const char *default_driver;
65 const char *driver;
66 struct pipe_screen *screen = NULL;
67 struct sw_winsys *winsys;
68
69 winsys = gdi_create_sw_winsys();
70 if(!winsys)
71 goto no_winsys;
72
73 #ifdef HAVE_LLVMPIPE
74 default_driver = "llvmpipe";
75 #elif HAVE_SWR
76 default_driver = "swr";
77 #else
78 default_driver = "softpipe";
79 #endif
80
81 driver = debug_get_option("GALLIUM_DRIVER", default_driver);
82
83 #ifdef HAVE_LLVMPIPE
84 if (strcmp(driver, "llvmpipe") == 0) {
85 screen = llvmpipe_create_screen( winsys );
86 if (screen)
87 use_llvmpipe = TRUE;
88 }
89 #endif
90 #ifdef HAVE_SWR
91 if (strcmp(driver, "swr") == 0) {
92 screen = swr_create_screen( winsys );
93 if (screen)
94 use_swr = TRUE;
95 }
96 #endif
97 (void) driver;
98
99 if (screen == NULL) {
100 screen = softpipe_create_screen( winsys );
101 }
102
103 if(!screen)
104 goto no_screen;
105
106 return screen;
107
108 no_screen:
109 winsys->destroy(winsys);
110 no_winsys:
111 return NULL;
112 }
113
114
115 static void
gdi_present(struct pipe_screen * screen,struct pipe_resource * res,HDC hDC)116 gdi_present(struct pipe_screen *screen,
117 struct pipe_resource *res,
118 HDC hDC)
119 {
120 /* This will fail if any interposing layer (trace, debug, etc) has
121 * been introduced between the state-trackers and the pipe driver.
122 *
123 * Ideally this would get replaced with a call to
124 * pipe_screen::flush_frontbuffer().
125 *
126 * Failing that, it may be necessary for intervening layers to wrap
127 * other structs such as this stw_winsys as well...
128 */
129
130 struct sw_winsys *winsys = NULL;
131 struct sw_displaytarget *dt = NULL;
132
133 #ifdef HAVE_LLVMPIPE
134 if (use_llvmpipe) {
135 winsys = llvmpipe_screen(screen)->winsys;
136 dt = llvmpipe_resource(res)->dt;
137 gdi_sw_display(winsys, dt, hDC);
138 return;
139 }
140 #endif
141
142 #ifdef HAVE_SWR
143 if (use_swr) {
144 swr_gdi_swap(screen, res, hDC);
145 return;
146 }
147 #endif
148
149 winsys = softpipe_screen(screen)->winsys,
150 dt = softpipe_resource(res)->dt,
151 gdi_sw_display(winsys, dt, hDC);
152 }
153
154
155 static const struct stw_winsys stw_winsys = {
156 &gdi_screen_create,
157 &gdi_present,
158 NULL, /* get_adapter_luid */
159 NULL, /* shared_surface_open */
160 NULL, /* shared_surface_close */
161 NULL /* compose */
162 };
163
164
165 EXTERN_C BOOL WINAPI
166 DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved);
167
168
169 BOOL WINAPI
DllMain(HINSTANCE hinstDLL,DWORD fdwReason,LPVOID lpvReserved)170 DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
171 {
172 switch (fdwReason) {
173 case DLL_PROCESS_ATTACH:
174 stw_init(&stw_winsys);
175 stw_init_thread();
176 break;
177
178 case DLL_THREAD_ATTACH:
179 stw_init_thread();
180 break;
181
182 case DLL_THREAD_DETACH:
183 stw_cleanup_thread();
184 break;
185
186 case DLL_PROCESS_DETACH:
187 if (lpvReserved == NULL) {
188 // We're being unloaded from the process.
189 stw_cleanup_thread();
190 stw_cleanup();
191 } else {
192 // Process itself is terminating, and all threads and modules are
193 // being detached.
194 //
195 // The order threads (including llvmpipe rasterizer threads) are
196 // destroyed can not be relied up, so it's not safe to cleanup.
197 //
198 // However global destructors (e.g., LLVM's) will still be called, and
199 // if Microsoft OPENGL32.DLL's DllMain is called after us, it will
200 // still try to invoke DrvDeleteContext to destroys all outstanding,
201 // so set stw_dev to NULL to return immediately if that happens.
202 stw_dev = NULL;
203 }
204 break;
205 }
206 return TRUE;
207 }
208