C++ (Cpp) cogl_texture_2d_sliced_new_from_bitmap Examples

Example #1

File: cogl-gst-video-sink.c Project: gcampax/cogl

/* This first tries to upload the texture to a CoglTexture2D, but
 * if that's not possible it falls back to a CoglTexture2DSliced.
 *
 * Auto-mipmapping of any uploaded texture is disabled
 */
static CoglTexture *
video_texture_new_from_data (CoglContext *ctx,
                             int width,
                             int height,
                             CoglPixelFormat format,
                             CoglPixelFormat internal_format,
                             int rowstride,
                             const uint8_t *data,
                             CoglError **error)
{
  CoglBitmap *bitmap;
  CoglTexture *tex;
  CoglError *internal_error = NULL;

  bitmap = cogl_bitmap_new_for_data (ctx,
                                     width, height,
                                     format,
                                     rowstride,
                                     (uint8_t *) data);

  if ((is_pot (cogl_bitmap_get_width (bitmap)) &&
       is_pot (cogl_bitmap_get_height (bitmap))) ||
      cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_NPOT_BASIC))
    {
      tex = COGL_TEXTURE (cogl_texture_2d_new_from_bitmap (bitmap,
                                                           internal_format,
                                                           &internal_error));
      if (!tex)
        {
          cogl_error_free (internal_error);
          internal_error = NULL;
        }
    }
  else
    tex = NULL;

  if (!tex)
    {
      /* Otherwise create a sliced texture */
      CoglTexture2DSliced *tex_2ds =
        cogl_texture_2d_sliced_new_from_bitmap (bitmap,
                                                -1, /* no maximum waste */
                                                internal_format,
                                                error);
      tex = COGL_TEXTURE (tex_2ds);
    }

  cogl_object_unref (bitmap);

  return tex;
}

Example #2

File: meta-wayland-buffer.c Project: endlessm/mutter

static gboolean
shm_buffer_attach (MetaWaylandBuffer  *buffer,
                   CoglTexture       **texture,
                   gboolean           *changed_texture,
                   GError            **error)
{
  MetaBackend *backend = meta_get_backend ();
  ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
  CoglContext *cogl_context = clutter_backend_get_cogl_context (clutter_backend);
  struct wl_shm_buffer *shm_buffer;
  int stride, width, height;
  CoglPixelFormat format;
  CoglTextureComponents components;
  CoglBitmap *bitmap;
  CoglTexture *new_texture;

  shm_buffer = wl_shm_buffer_get (buffer->resource);
  stride = wl_shm_buffer_get_stride (shm_buffer);
  width = wl_shm_buffer_get_width (shm_buffer);
  height = wl_shm_buffer_get_height (shm_buffer);
  shm_buffer_get_cogl_pixel_format (shm_buffer, &format, &components);

  if (*texture &&
      cogl_texture_get_width (*texture) == width &&
      cogl_texture_get_height (*texture) == height &&
      cogl_texture_get_components (*texture) == components &&
      _cogl_texture_get_format (*texture) == format)
    {
      buffer->is_y_inverted = TRUE;
      *changed_texture = FALSE;
      return TRUE;
    }

  cogl_clear_object (texture);

  wl_shm_buffer_begin_access (shm_buffer);

  bitmap = cogl_bitmap_new_for_data (cogl_context,
                                     width, height,
                                     format,
                                     stride,
                                     wl_shm_buffer_get_data (shm_buffer));

  new_texture = COGL_TEXTURE (cogl_texture_2d_new_from_bitmap (bitmap));
  cogl_texture_set_components (new_texture, components);

  if (!cogl_texture_allocate (new_texture, error))
    {
      g_clear_pointer (&new_texture, cogl_object_unref);
      if (g_error_matches (*error, COGL_TEXTURE_ERROR, COGL_TEXTURE_ERROR_SIZE))
        {
          CoglTexture2DSliced *texture_sliced;

          g_clear_error (error);

          texture_sliced =
            cogl_texture_2d_sliced_new_from_bitmap (bitmap,
                                                    COGL_TEXTURE_MAX_WASTE);
          new_texture = COGL_TEXTURE (texture_sliced);
          cogl_texture_set_components (new_texture, components);

          if (!cogl_texture_allocate (new_texture, error))
            g_clear_pointer (&new_texture, cogl_object_unref);
        }
    }

  cogl_object_unref (bitmap);

  wl_shm_buffer_end_access (shm_buffer);

  if (!new_texture)
    return FALSE;

  *texture = new_texture;
  *changed_texture = TRUE;
  buffer->is_y_inverted = TRUE;

  return TRUE;
}