src/gallium/state_trackers/wgl/stw_device.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <windows.h>
  29
  30 #include "glapi/glthread.h"
  31 #include "util/u_debug.h"
  32 #include "util/u_math.h"
  33 #include "pipe/p_screen.h"
  34 #include "state_tracker/st_public.h"
  35
  36 #ifdef DEBUG
  37 #include "trace/tr_screen.h"
  38 #include "trace/tr_texture.h"
  39 #endif
  40
  41 #include "stw_device.h"
  42 #include "stw_winsys.h"
  43 #include "stw_pixelformat.h"
  44 #include "stw_icd.h"
  45 #include "stw_tls.h"
  46 #include "stw_framebuffer.h"
  47
  48 #ifdef WIN32_THREADS
  49 extern _glthread_Mutex OneTimeLock;
  50 extern void FreeAllTSD(void);
  51 #endif
  52
  53
  54 struct stw_device *stw_dev = NULL;
  55
  56
  57 /**
  58  * XXX: Dispatch pipe_screen::flush_front_buffer to our
  59  * stw_winsys::flush_front_buffer.
  60  */
  61 static void
  62 stw_flush_frontbuffer(struct pipe_screen *screen,
  63                      struct pipe_surface *surface,
  64                      void *context_private )
  65 {
  66    HDC hdc = (HDC)context_private;
  67    struct stw_framebuffer *fb;
  68
  69    fb = stw_framebuffer_from_hdc( hdc );
  70    if (!fb) {
  71       /* fb can be NULL if window was destroyed already */
  72       return;
  73    }
  74
  75    stw_framebuffer_present_locked(hdc, fb, surface);
  76 }
  77
  78
  79 boolean
  80 stw_init(const struct stw_winsys *stw_winsys)
  81 {
  82    static struct stw_device stw_dev_storage;
  83    struct pipe_screen *screen;
  84
  85    debug_printf("%s\n", __FUNCTION__);
  86
  87    assert(!stw_dev);
  88
  89    stw_tls_init();
  90
  91    stw_dev = &stw_dev_storage;
  92    memset(stw_dev, 0, sizeof(*stw_dev));
  93
  94 #ifdef DEBUG
  95    stw_dev->memdbg_no = debug_memory_begin();
  96 #endif
  97
  98    stw_dev->stw_winsys = stw_winsys;
  99
 100 #ifdef WIN32_THREADS
 101    _glthread_INIT_MUTEX(OneTimeLock);
 102 #endif
 103
 104    screen = stw_winsys->create_screen();
 105    if(!screen)
 106       goto error1;
 107
 108    if(stw_winsys->get_adapter_luid)
 109       stw_winsys->get_adapter_luid(screen, &stw_dev->AdapterLuid);
 110
 111 #ifdef DEBUG
 112    stw_dev->screen = trace_screen_create(screen);
 113    stw_dev->trace_running = stw_dev->screen != screen ? TRUE : FALSE;
 114 #else
 115    stw_dev->screen = screen;
 116 #endif
 117
 118    stw_dev->screen->flush_frontbuffer = &stw_flush_frontbuffer;
 119
 120    pipe_mutex_init( stw_dev->ctx_mutex );
 121    pipe_mutex_init( stw_dev->fb_mutex );
 122
 123    stw_dev->ctx_table = handle_table_create();
 124    if (!stw_dev->ctx_table) {
 125       goto error1;
 126    }
 127
 128    stw_pixelformat_init();
 129
 130    return TRUE;
 131
 132 error1:
 133    stw_dev = NULL;
 134    return FALSE;
 135 }
 136
 137
 138 boolean
 139 stw_init_thread(void)
 140 {
 141    return stw_tls_init_thread();
 142 }
 143
 144
 145 void
 146 stw_cleanup_thread(void)
 147 {
 148    stw_tls_cleanup_thread();
 149 }
 150
 151
 152 void
 153 stw_cleanup(void)
 154 {
 155    DHGLRC dhglrc;
 156
 157    debug_printf("%s\n", __FUNCTION__);
 158
 159    if (!stw_dev)
 160       return;
 161
 162    /*
 163     * Abort cleanup if there are still active contexts. In some situations
 164     * this DLL may be unloaded before the DLL that is using GL contexts is.
 165     */
 166    pipe_mutex_lock( stw_dev->ctx_mutex );
 167    dhglrc = handle_table_get_first_handle(stw_dev->ctx_table);
 168    pipe_mutex_unlock( stw_dev->ctx_mutex );
 169    if (dhglrc) {
 170       debug_printf("%s: contexts still active -- cleanup aborted\n", __FUNCTION__);
 171       return;
 172    }
 173
 174    handle_table_destroy(stw_dev->ctx_table);
 175
 176    stw_framebuffer_cleanup();
 177
 178    pipe_mutex_destroy( stw_dev->fb_mutex );
 179    pipe_mutex_destroy( stw_dev->ctx_mutex );
 180
 181    stw_dev->screen->destroy(stw_dev->screen);
 182
 183 #ifdef WIN32_THREADS
 184    _glthread_DESTROY_MUTEX(OneTimeLock);
 185    FreeAllTSD();
 186 #endif
 187
 188 #ifdef DEBUG
 189    debug_memory_end(stw_dev->memdbg_no);
 190 #endif
 191
 192    stw_tls_cleanup();
 193
 194    stw_dev = NULL;
 195 }
 196
 197
 198 struct stw_context *
 199 stw_lookup_context_locked( DHGLRC dhglrc )
 200 {
 201    if (dhglrc == 0)
 202       return NULL;
 203
 204    if (stw_dev == NULL)
 205       return NULL;
 206
 207    return (struct stw_context *) handle_table_get(stw_dev->ctx_table, dhglrc);
 208 }
 209
 210
 211 void APIENTRY
 212 DrvSetCallbackProcs(
 213    INT nProcs,
 214    PROC *pProcs )
 215 {
 216    size_t size;
 217
 218    if (stw_dev == NULL)
 219       return;
 220
 221    size = MIN2(nProcs * sizeof *pProcs, sizeof stw_dev->callbacks);
 222    memcpy(&stw_dev->callbacks, pProcs, size);
 223
 224    return;
 225 }
 226
 227
 228 BOOL APIENTRY
 229 DrvValidateVersion(
 230    ULONG ulVersion )
 231 {
 232    /* TODO: get the expected version from the winsys */
 233    return ulVersion == 1;
 234 }