Cambios importantes en monkey patching y validación de entradas opcionales, con evaluación diferida y expansión de nodos en ComfyUI.
PR #2666 invierte el modelo de ejecución: pasa de un modelo recursivo de atrás hacia adelante a un ordenamiento topológico de adelante hacia atrás. Aunque la mayoría de los nodos personalizados debería seguir funcionando sin problemas, esta página sirve como guía para los creadores de nodos personalizados sobre las cosas que podrían romperse.
Cambios importantes
Monkey patching
Es probable que cualquier código que haya aplicado monkey patching al modelo de ejecución deje de funcionar. Ten en cuenta que el rendimiento de la ejecución con este PR supera al de los monkey patches más populares, por lo que muchos de ellos serán innecesarios.
Validación de entradas opcionales
Antes de este PR, solo se validaban realmente los nodos que estaban conectados a las salidas exclusivamente a través de una cadena de entradas "required". Si tenías nodos personalizados que solo se conectaban a entradas "optional", antes no habrías visto que fallaran la validación.
Si las salidas de tus nodos ya podían conectarse a entradas "required", es poco probable que algo en esta sección se aplique a ti. Se aplicará principalmente a autores de nodos personalizados que usan tipos personalizados y exclusivamente entradas "optional".
Estas son algunas de las cosas que podrían hacer que falles la validación, junto con soluciones recomendadas:
Uso de Parámetros adicionales reservados como min y max en tipos que no son comparables (por ejemplo, diccionarios) para configurar widgets personalizados.
Cambia los parámetros adicionales usados a claves no reservadas como uiMin y uiMax. (Solución recomendada)
(Cuando se usa como entrada) Define una función personalizada VALIDATE_INPUTS que tome un argumento input_types para que se omita la validación de tipo.
El uso de listas (por ejemplo, [1, 2, 3]) como constantes en la definición del gráfico (por ejemplo, para representar una entrada VEC3 constante). Esto habría requerido una extensión del front-end antes. Anteriormente, las listas de tamaño exactamente 2 habrían fallado de todos modos, ya que se habrían tratado como conexiones rotas.
Envuelve las listas en un diccionario como { "value": [1, 2, 3] }
Orden de ejecución
El orden de ejecución siempre ha cambiado según qué nodos tengan qué IDs, pero ahora también puede cambiar según qué valores estén en caché. En general, el orden de ejecución debe considerarse no determinista y sujeto a cambios (más allá de lo que impone la estructura del gráfico).No dependas del orden de ejecución.HIC SUNT DRACONES
Nueva funcionalidad
Cambios en la validación
Se agregaron varias funciones a la función VALIDATE_INPUTS para reducir el impacto de la Validación de entradas opcionales mencionada anteriormente.
Ahora se omitirá la validación predeterminada para las entradas que recibe la función VALIDATE_INPUTS.
La función VALIDATE_INPUTS ahora puede aceptar **kwargs, lo que hace que el creador del nodo trate todas las entradas como validadas.
La función VALIDATE_INPUTS puede aceptar una entrada llamada input_types. Esta entrada será un dict que asigna cada entrada (conectada mediante una conexión) al tipo de la salida conectada. Cuando existe este argumento, se omite la validación de tipos de las entradas del nodo.
Las entradas se pueden evaluar de forma diferida (es decir, puedes esperar a ver si se necesitan antes de evaluar el nodo conectado y todos sus ancestros). Consulta Evaluación diferida para obtener más información.
Expansión de nodos
En tiempo de ejecución, los nodos pueden expandirse en un subgrafo de nodos. Esto es lo que permite implementar bucles (mediante recursión de cola). Consulta Expansión de nodos para obtener más información.
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