Exemplo n.º 1
0
CoglOnscreenTemplate *
cogl_onscreen_template_new (CoglSwapChain *swap_chain)
{
  CoglOnscreenTemplate *onscreen_template = g_slice_new0 (CoglOnscreenTemplate);
  char *user_config;

  onscreen_template->config.swap_chain = swap_chain;
  if (swap_chain)
    cogl_object_ref (swap_chain);
  else
    onscreen_template->config.swap_chain = cogl_swap_chain_new ();

  onscreen_template->config.swap_throttled = TRUE;
  onscreen_template->config.need_stencil = TRUE;
  onscreen_template->config.samples_per_pixel = 0;

  user_config = getenv ("COGL_POINT_SAMPLES_PER_PIXEL");
  if (user_config)
    {
      unsigned long samples_per_pixel = strtoul (user_config, NULL, 10);
      if (samples_per_pixel != ULONG_MAX)
        onscreen_template->config.samples_per_pixel =
          samples_per_pixel;
    }

  return _cogl_onscreen_template_object_new (onscreen_template);
}
Exemplo n.º 2
0
static CoglDisplay *
clutter_backend_cex100_get_display (ClutterBackend  *backend,
                                    CoglRenderer    *renderer,
                                    CoglSwapChain   *swap_chain,
                                    GError         **error)
{
  CoglOnscreenTemplate *onscreen_template = NULL;
  CoglDisplay *display;

  swap_chain = cogl_swap_chain_new ();

#if defined(COGL_HAS_GDL_SUPPORT)
  cogl_swap_chain_set_length (swap_chain, gdl_n_buffers);
#endif

  onscreen_template = cogl_onscreen_template_new (swap_chain);

  /* XXX: I have some doubts that this is a good design.
   * Conceptually should we be able to check an onscreen_template
   * without more details about the CoglDisplay configuration?
   */
  if (!cogl_renderer_check_onscreen_template (renderer,
                                              onscreen_template,
                                              error))
    goto error;

  display = cogl_display_new (renderer, onscreen_template);

#if defined(COGL_HAS_GDL_SUPPORT)
  cogl_gdl_display_set_plane (cogl_display, gdl_plane);
#endif

  return display;
}
Exemplo n.º 3
0
static gboolean
clutter_backend_win32_create_context (ClutterBackend  *backend,
                                      GError         **error)
{
  CoglSwapChain *swap_chain;
  CoglOnscreenTemplate *onscreen_template;

  if (backend->cogl_context)
    return TRUE;

  backend->cogl_renderer = cogl_renderer_new ();
  if (!cogl_renderer_connect (backend->cogl_renderer, error))
    goto error;

  swap_chain = cogl_swap_chain_new ();

  onscreen_template = cogl_onscreen_template_new (swap_chain);
  cogl_object_unref (swap_chain);

  if (!cogl_renderer_check_onscreen_template (backend->cogl_renderer,
                                              onscreen_template,
                                              error))
    goto error;

  backend->cogl_display = cogl_display_new (backend->cogl_renderer,
                                            onscreen_template);
  cogl_object_unref (backend->cogl_renderer);
  cogl_object_unref (onscreen_template);

  if (!cogl_display_setup (backend->cogl_display, error))
    goto error;

  backend->cogl_context = cogl_context_new (backend->cogl_display, error);
  if (!backend->cogl_context)
    goto error;

  return TRUE;

error:
  if (backend->cogl_display)
    {
      cogl_object_unref (backend->cogl_display);
      backend->cogl_display = NULL;
    }

  if (onscreen_template)
    cogl_object_unref (onscreen_template);
  if (swap_chain)
    cogl_object_unref (swap_chain);

  if (backend->cogl_renderer)
    {
      cogl_object_unref (backend->cogl_renderer);
      backend->cogl_renderer = NULL;
    }
  return FALSE;
}
Exemplo n.º 4
0
static gboolean
clutter_backend_real_create_context (ClutterBackend  *backend,
                                     GError         **error)
{
  ClutterBackendClass *klass;
  CoglSwapChain *swap_chain;
  GError *internal_error;

  if (backend->cogl_context != NULL)
    return TRUE;

  klass = CLUTTER_BACKEND_GET_CLASS (backend);

  swap_chain = NULL;
  internal_error = NULL;

  CLUTTER_NOTE (BACKEND, "Creating Cogl renderer");
  if (klass->get_renderer != NULL)
    backend->cogl_renderer = klass->get_renderer (backend, &internal_error);
  else
    backend->cogl_renderer = cogl_renderer_new ();

  if (backend->cogl_renderer == NULL)
    goto error;

#ifdef HAVE_CLUTTER_WAYLAND_COMPOSITOR
  /* If the application is trying to act as a Wayland compositor then
     it needs to have an EGL-based renderer backend */
  if (_wayland_compositor_display)
    cogl_renderer_add_constraint (backend->cogl_renderer,
                                  COGL_RENDERER_CONSTRAINT_USES_EGL);
#endif

  CLUTTER_NOTE (BACKEND, "Connecting the renderer");
  if (!cogl_renderer_connect (backend->cogl_renderer, &internal_error))
    goto error;

  CLUTTER_NOTE (BACKEND, "Creating Cogl swap chain");
  swap_chain = cogl_swap_chain_new ();

  CLUTTER_NOTE (BACKEND, "Creating Cogl display");
  if (klass->get_display != NULL)
    {
      backend->cogl_display = klass->get_display (backend,
                                                  backend->cogl_renderer,
                                                  swap_chain,
                                                  &internal_error);
    }
  else
    {
      CoglOnscreenTemplate *tmpl;
      gboolean res;

      tmpl = cogl_onscreen_template_new (swap_chain);

      /* XXX: I have some doubts that this is a good design.
       *
       * Conceptually should we be able to check an onscreen_template
       * without more details about the CoglDisplay configuration?
       */
      res = cogl_renderer_check_onscreen_template (backend->cogl_renderer,
                                                   tmpl,
                                                   &internal_error);

      if (!res)
        goto error;

      backend->cogl_display = cogl_display_new (backend->cogl_renderer, tmpl);

      /* the display owns the template */
      cogl_object_unref (tmpl);
    }

  if (backend->cogl_display == NULL)
    goto error;

#ifdef HAVE_CLUTTER_WAYLAND_COMPOSITOR
  cogl_wayland_display_set_compositor_display (backend->cogl_display,
                                               _wayland_compositor_display);
#endif

  CLUTTER_NOTE (BACKEND, "Setting up the display");
  if (!cogl_display_setup (backend->cogl_display, &internal_error))
    goto error;

  CLUTTER_NOTE (BACKEND, "Creating the Cogl context");
  backend->cogl_context = cogl_context_new (backend->cogl_display, &internal_error);
  if (backend->cogl_context == NULL)
    goto error;

  backend->cogl_source = cogl_glib_source_new (backend->cogl_context,
                                               G_PRIORITY_DEFAULT);
  g_source_attach (backend->cogl_source, NULL);

  /* the display owns the renderer and the swap chain */
  cogl_object_unref (backend->cogl_renderer);
  cogl_object_unref (swap_chain);

  return TRUE;

error:
  if (backend->cogl_display != NULL)
    {
      cogl_object_unref (backend->cogl_display);
      backend->cogl_display = NULL;
    }

  if (backend->cogl_renderer != NULL)
    {
      cogl_object_unref (backend->cogl_renderer);
      backend->cogl_renderer = NULL;
    }

  if (swap_chain != NULL)
    cogl_object_unref (swap_chain);

  if (internal_error != NULL)
    g_propagate_error (error, internal_error);
  else
    g_set_error_literal (error, CLUTTER_INIT_ERROR,
                         CLUTTER_INIT_ERROR_BACKEND,
                         _("Unable to initialize the Clutter backend"));

  return FALSE;
}