A visual shader node that forces to emit a particle from a sub-emitter. This node internally calls [code]emit_subparticle[/code] shader method. It will emit a particle from the configured sub-emitter and also allows to customize how its emitted. Requires a sub-emitter assigned to the particles node with this shader. Flags used to override the properties defined in the sub-emitter's process material. If enabled, the particle starts with the position defined by this node. If enabled, the particle starts with the rotation and scale defined by this node. If enabled,the particle starts with the velocity defined by this node. If enabled, the particle starts with the color defined by this node. If enabled, the particle starts with the [code]CUSTOM[/code] data defined by this node.