src/gallium/state_trackers/wgl/shared/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 "pipe/p_screen.h"
  33
  34 #include "shared/stw_device.h"
  35 #include "shared/stw_winsys.h"
  36 #include "shared/stw_pixelformat.h"
  37 #include "shared/stw_public.h"
  38
  39 #ifdef WIN32_THREADS
  40 extern _glthread_Mutex OneTimeLock;
  41 extern void FreeAllTSD(void);
  42 #endif
  43
  44
  45 struct stw_device *stw_dev = NULL;
  46
  47
  48 /**
  49  * XXX: Dispatch pipe_screen::flush_front_buffer to our
  50  * stw_winsys::flush_front_buffer.
  51  */
  52 static void
  53 st_flush_frontbuffer(struct pipe_screen *screen,
  54                      struct pipe_surface *surf,
  55                      void *context_private )
  56 {
  57    const struct stw_winsys *stw_winsys = stw_dev->stw_winsys;
  58    HDC hdc = (HDC)context_private;
  59
  60    stw_winsys->flush_frontbuffer(screen, surf, hdc);
  61 }
  62
  63
  64 boolean
  65 st_init(const struct stw_winsys *stw_winsys)
  66 {
  67    static struct stw_device stw_dev_storage;
  68
  69    debug_printf("%s\n", __FUNCTION__);
  70
  71    assert(!stw_dev);
  72
  73    stw_dev = &stw_dev_storage;
  74    memset(stw_dev, 0, sizeof(*stw_dev));
  75
  76 #ifdef DEBUG
  77    stw_dev->memdbg_no = debug_memory_begin();
  78 #endif
  79
  80    stw_dev->stw_winsys = stw_winsys;
  81
  82 #ifdef WIN32_THREADS
  83    _glthread_INIT_MUTEX(OneTimeLock);
  84 #endif
  85
  86    stw_dev->screen = stw_winsys->create_screen();
  87    if(!stw_dev->screen)
  88       goto error1;
  89
  90    stw_dev->screen->flush_frontbuffer = st_flush_frontbuffer;
  91
  92    pipe_mutex_init( stw_dev->mutex );
  93
  94    pixelformat_init();
  95
  96    return TRUE;
  97
  98 error1:
  99    stw_dev = NULL;
 100    return FALSE;
 101 }
 102
 103
 104 void
 105 st_cleanup(void)
 106 {
 107    UINT_PTR i;
 108
 109    debug_printf("%s\n", __FUNCTION__);
 110
 111    if (!stw_dev)
 112       return;
 113
 114    pipe_mutex_lock( stw_dev->mutex );
 115    {
 116       /* Ensure all contexts are destroyed */
 117       for (i = 0; i < STW_CONTEXT_MAX; i++)
 118          if (stw_dev->ctx_array[i].ctx)
 119             stw_delete_context( i + 1 );
 120    }
 121    pipe_mutex_unlock( stw_dev->mutex );
 122
 123    pipe_mutex_destroy( stw_dev->mutex );
 124
 125    stw_dev->screen->destroy(stw_dev->screen);
 126
 127 #ifdef WIN32_THREADS
 128    _glthread_DESTROY_MUTEX(OneTimeLock);
 129    FreeAllTSD();
 130 #endif
 131
 132 #ifdef DEBUG
 133    debug_memory_end(stw_dev->memdbg_no);
 134 #endif
 135
 136    stw_dev = NULL;
 137 }
 138
 139
 140 struct stw_context *
 141 stw_lookup_context( UINT_PTR dhglrc )
 142 {
 143    if (dhglrc == 0 ||
 144        dhglrc >= STW_CONTEXT_MAX)
 145       return NULL;
 146
 147    if (stw_dev == NULL)
 148       return NULL;
 149
 150    return stw_dev->ctx_array[dhglrc - 1].ctx;
 151 }
 152