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
54static boolean use_llvmpipe = FALSE;
55
56
57static struct pipe_screen *
58gdi_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
94no_screen:
95   winsys->destroy(winsys);
96no_winsys:
97   return NULL;
98}
99
100
101static void
102gdi_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
134static 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
144BOOL WINAPI
145DllMain(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