C++ (Cpp) stw_st_create_framebuffer Examples

Example #1

File: stw_framebuffer.c Project: MIPS/external-mesa3d

/**
 * Create a new stw_framebuffer object which corresponds to the given
 * HDC/window.  If successful, we return the new stw_framebuffer object
 * with its mutex locked.
 */
struct stw_framebuffer *
stw_framebuffer_create(HDC hdc, int iPixelFormat)
{
   HWND hWnd;
   struct stw_framebuffer *fb;
   const struct stw_pixelformat_info *pfi;

   /* We only support drawing to a window. */
   hWnd = WindowFromDC( hdc );
   if (!hWnd)
      return NULL;

   fb = CALLOC_STRUCT( stw_framebuffer );
   if (fb == NULL)
      return NULL;

   fb->hWnd = hWnd;
   fb->iPixelFormat = iPixelFormat;

   /*
    * We often need a displayable pixel format to make GDI happy. Set it
    * here (always 1, i.e., out first pixel format) where appropriate.
    */
   fb->iDisplayablePixelFormat = iPixelFormat <= stw_dev->pixelformat_count
      ? iPixelFormat : 1;

   fb->pfi = pfi = stw_pixelformat_get_info( iPixelFormat );
   fb->stfb = stw_st_create_framebuffer( fb );
   if (!fb->stfb) {
      FREE( fb );
      return NULL;
   }

   fb->refcnt = 1;

   /*
    * Windows can be sometimes have zero width and or height, but we ensure
    * a non-zero framebuffer size at all times.
    */

   fb->must_resize = TRUE;
   fb->width  = 1;
   fb->height = 1;
   fb->client_rect.left   = 0;
   fb->client_rect.top    = 0;
   fb->client_rect.right  = fb->client_rect.left + fb->width;
   fb->client_rect.bottom = fb->client_rect.top  + fb->height;

   stw_framebuffer_get_size(fb);

   InitializeCriticalSection(&fb->mutex);

   /* This is the only case where we lock the stw_framebuffer::mutex before
    * stw_dev::fb_mutex, since no other thread can know about this framebuffer
    * and we must prevent any other thread from destroying it before we return.
    */
   stw_framebuffer_lock(fb);

   stw_lock_framebuffers(stw_dev);
   fb->next = stw_dev->fb_head;
   stw_dev->fb_head = fb;
   stw_unlock_framebuffers(stw_dev);

   return fb;
}

Example #2

File: stw_framebuffer.c Project: RareHare/reactos

struct stw_framebuffer *
stw_framebuffer_create(
   HDC hdc,
   int iPixelFormat )
{
   HWND hWnd;
   struct stw_framebuffer *fb;
   const struct stw_pixelformat_info *pfi;

   /* We only support drawing to a window. */
   hWnd = WindowFromDC( hdc );
   if(!hWnd)
      return NULL;
   
   fb = CALLOC_STRUCT( stw_framebuffer );
   if (fb == NULL)
      return NULL;

   /* Applications use, create, destroy device contexts, so the hdc passed is.  We create our own DC
    * because we need one for single buffered visuals.
    */
   fb->hDC = GetDC(hWnd);

   fb->hWnd = hWnd;
   fb->iPixelFormat = iPixelFormat;

   fb->pfi = pfi = stw_pixelformat_get_info( iPixelFormat - 1 );
   fb->stfb = stw_st_create_framebuffer( fb );
   if (!fb->stfb) {
      FREE( fb );
      return NULL;
   }

   fb->refcnt = 1;

   /*
    * Windows can be sometimes have zero width and or height, but we ensure
    * a non-zero framebuffer size at all times.
    */

   fb->must_resize = TRUE;
   fb->width  = 1;
   fb->height = 1;
   fb->client_rect.left   = 0;
   fb->client_rect.top    = 0;
   fb->client_rect.right  = fb->client_rect.left + fb->width;
   fb->client_rect.bottom = fb->client_rect.top  + fb->height;

   stw_framebuffer_get_size(fb);

   pipe_mutex_init( fb->mutex );

   /* This is the only case where we lock the stw_framebuffer::mutex before
    * stw_dev::fb_mutex, since no other thread can know about this framebuffer
    * and we must prevent any other thread from destroying it before we return.
    */
   pipe_mutex_lock( fb->mutex );

   pipe_mutex_lock( stw_dev->fb_mutex );
   fb->next = stw_dev->fb_head;
   stw_dev->fb_head = fb;
   pipe_mutex_unlock( stw_dev->fb_mutex );

   return fb;
}