ConstReadonlynoUpdate: 1No newer map update was available, the map had no complete frame to draw,
or the update extent differed from the target. The map publishes another
update when it has one. A demand with MLN_FRAME_DEMAND_WAIT_FOR_UPDATE
waits for that update instead, and finishes with this result only when a
barrier ends its wait.
Readonlyrendered: 0A frame was rendered for acquisition, presentation, or ordered readback.
Readonlysuperseded: 4A newer IF_NEEDED demand with the same flags replaced this demand.
ReadonlytargetNotReady: 3The target could not produce a frame. The attempt consumes nothing, so a later demand with the same flags renders what this one would have. This result does not cause a map update, so the host demands again when the target can be ready, such as after a paced delay.
Terminal disposition of one accepted frame demand.
See
mln_render_resultin the C API reference.