make_mapped()

template<typename T >

Mapped< T > MayaFlux::Portal::Forma::make_mapped	(	T	initial,
		GeometryFn< T >	geometry,
		std::shared_ptr< Buffers::FormaBuffer >	buffer
	)

Construct a Mapped<T> with a freshly allocated MappedState.

Parameters

initial	Starting value.
geometry	Geometry function producing vertex bytes from a value.
buffer	VKBuffer whose raw bytes the geometry function writes into.

Returns

Ready-to-use Mapped. Register element with a Layer before first sync().

Definition at line 154 of file Mapped.hpp.

{
    auto st = std::make_shared<MappedState<T>>();
    st->write(initial);
 
    Element el;
    el.buffer = std::move(buffer);
 
    Mapped<T> m;
    m.state = std::move(st);
    m.geometry_fn = std::move(geometry);
    m.element = std::move(el);
    m.last_version = static_cast<Version>(-1);
    return m;
}

References MayaFlux::Portal::Forma::Element::buffer, MayaFlux::Portal::Forma::Mapped< T >::element, MayaFlux::Portal::Forma::Mapped< T >::geometry_fn, MayaFlux::Portal::Forma::Mapped< T >::last_version, and MayaFlux::Portal::Forma::Mapped< T >::state.