Exemplo n.º 1
0
/* gfx_gdi_lock:
 */
static void gfx_gdi_lock(struct BITMAP *bmp)
{
   /* to prevent the drawing threads and the rendering proc
    * from concurrently accessing the dirty lines array
    */
   _enter_gfx_critical();

   /* arrange for drawing requests to pause when we are in the background */
   if (!_win_app_foreground) {
      /* stop timer */
      remove_int(render_proc);

      _exit_gfx_critical();

      if (GFX_CRITICAL_RELEASED)
         _win_thread_switch_out();

      _enter_gfx_critical();

      /* restart timer */
      install_int(render_proc, RENDER_DELAY);
   }

   lock_nesting++;
   bmp->id |= BMP_ID_LOCKED;
}
Exemplo n.º 2
0
/* gfx_directx_switch_out:
 *  Arranges for drawing requests to pause when we are in the background.
 */
static void gfx_directx_switch_out(void)
{
   _exit_gfx_critical();

   if (GFX_CRITICAL_RELEASED)
      _win_thread_switch_out();

   _enter_gfx_critical();
}
Exemplo n.º 3
0
/* flip_with_forefront_bitmap:
 *  Worker function for DirectDraw page flipping.
 */
static int flip_with_forefront_bitmap(BITMAP *bmp, int wait)
{
   DDRAW_SURFACE *surf;
   HRESULT hr;

   /* flip only in the foreground */
   if (!_win_app_foreground) {
      _win_thread_switch_out();
      return 0;
   }

   /* retrieve the underlying surface */
   surf = DDRAW_SURFACE_OF(bmp);
   if (surf == flipping_page[0])
      return 0;

   ASSERT((surf == flipping_page[1]) || (surf == flipping_page[2]));

   /* flip the contents of the surfaces */
   hr = IDirectDrawSurface2_Flip(flipping_page[0]->id, surf->id, wait ? DDFLIP_WAIT : 0);

   /* if the surface has been lost, try to restore all surfaces */
   if (hr == DDERR_SURFACELOST) {
      if (restore_all_ddraw_surfaces() == 0)
         hr = IDirectDrawSurface2_Flip(flipping_page[0]->id, surf->id, wait ? DDFLIP_WAIT : 0);
   }

   if (FAILED(hr)) {
      _TRACE(PREFIX_E "Can't flip (%s)\n", dd_err(hr));
      return -1;
   }

   /* attach the surface to the former forefront bitmap */
   surf->parent_bmp = flipping_page[0]->parent_bmp;
   surf->parent_bmp->extra = surf;

   /* make the bitmap point to the forefront surface */
   flipping_page[0]->parent_bmp = bmp;
   bmp->extra = flipping_page[0];

   return 0;
}