C++ (Cpp) _cogl_read_pixels_with_rowstride примеры использования

Пример #1

Файл: cogl.c Проект: collects/cogl

void
cogl_read_pixels (int x,
                  int y,
                  int width,
                  int height,
                  CoglReadPixelsFlags source,
                  CoglPixelFormat format,
                  guint8 *pixels)
{
    _cogl_read_pixels_with_rowstride (x, y, width, height,
                                      source, format, pixels,
                                      /* rowstride */
                                      _cogl_get_format_bpp (format) * width);
}

Пример #2

Файл: cogl-texture.c Проект: nobled/clutter

static gboolean
get_texture_bits_via_offscreen (CoglHandle      texture_handle,
                                int             x,
                                int             y,
                                int             width,
                                int             height,
                                guint8         *dst_bits,
                                unsigned int    dst_rowstride,
                                CoglPixelFormat dst_format)
{
  CoglFramebuffer *framebuffer;

  _COGL_GET_CONTEXT (ctx, FALSE);

  if (!cogl_features_available (COGL_FEATURE_OFFSCREEN))
    return FALSE;

  framebuffer = _cogl_offscreen_new_to_texture_full
                                      (texture_handle,
                                       COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL,
                                       0);

  if (framebuffer == NULL)
    return FALSE;

  cogl_push_framebuffer (framebuffer);

  _cogl_read_pixels_with_rowstride (x, y, width, height,
                                    COGL_READ_PIXELS_COLOR_BUFFER,
                                    dst_format, dst_bits, dst_rowstride);

  cogl_pop_framebuffer ();

  cogl_object_unref (framebuffer);

  return TRUE;
}