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 "pipe/p_debug.h"
  31 #include "pipe/p_screen.h"
  32
  33 #include "shared/stw_device.h"
  34 #include "shared/stw_winsys.h"
  35 #include "shared/stw_pixelformat.h"
  36 #include "shared/stw_public.h"
  37 #include "stw.h"
  38
  39
  40 struct stw_device *stw_dev = NULL;
  41
  42
  43 /**
  44  * XXX: Dispatch pipe_screen::flush_front_buffer to our
  45  * stw_winsys::flush_front_buffer.
  46  */
  47 static void
  48 st_flush_frontbuffer(struct pipe_screen *screen,
  49                      struct pipe_surface *surf,
  50                      void *context_private )
  51 {
  52    const struct stw_winsys *stw_winsys = stw_dev->stw_winsys;
  53    HDC hdc = (HDC)context_private;
  54
  55    stw_winsys->flush_frontbuffer(screen, surf, hdc);
  56 }
  57
  58
  59 boolean
  60 stw_shared_init(const struct stw_winsys *stw_winsys)
  61 {
  62    static struct stw_device stw_dev_storage;
  63
  64    assert(!stw_dev);
  65
  66    stw_dev = &stw_dev_storage;
  67    memset(stw_dev, 0, sizeof(*stw_dev));
  68
  69    stw_dev->stw_winsys = stw_winsys;
  70
  71    stw_dev->screen = stw_winsys->create_screen();
  72    if(!stw_dev->screen)
  73       goto error1;
  74
  75    stw_dev->screen->flush_frontbuffer = st_flush_frontbuffer;
  76
  77    pixelformat_init();
  78
  79    return TRUE;
  80
  81 error1:
  82    stw_dev = NULL;
  83    return FALSE;
  84 }
  85
  86
  87 void
  88 stw_shared_cleanup(void)
  89 {
  90    stw_dev = NULL;
  91 }