+void operator>>(const LexicalConverter &, PixelFormat &);
+
+PixelFormat pixelformat_from_graphics(Graphics::PixelFormat);
+PixelFormat storage_pixelformat_from_graphics(Graphics::PixelFormat, bool = false);
+
+PixelFormat get_base_pixelformat(PixelFormat);
+PixelFormat get_unsized_pixelformat(PixelFormat);
+PixelFormat get_sized_pixelformat(PixelFormat, unsigned = 1);
+PixelFormat get_default_sized_pixelformat(PixelFormat);
+PixelFormat get_srgb_pixelformat(PixelFormat);
+unsigned get_component_count(PixelFormat);
+unsigned get_component_size(PixelFormat);
+unsigned get_pixel_size(PixelFormat);
+
+void require_pixelformat(PixelFormat);
+