Add cosmos_rflow option to ModelSamplingContinuousEDM node. (Comfy-Org#8523)

This is for the cosmos predict2 model.

Author: comfyanonymous

comfy_extras/nodes_model_advanced.py

@@ -189,7 +189,7 @@ class ModelSamplingContinuousEDM:
     @classmethod
     def INPUT_TYPES(s):
         return {"required": { "model": ("MODEL",),
-                              "sampling": (["v_prediction", "edm", "edm_playground_v2.5", "eps"],),
+                              "sampling": (["v_prediction", "edm", "edm_playground_v2.5", "eps", "cosmos_rflow"],),
                               "sigma_max": ("FLOAT", {"default": 120.0, "min": 0.0, "max": 1000.0, "step":0.001, "round": False}),
                               "sigma_min": ("FLOAT", {"default": 0.002, "min": 0.0, "max": 1000.0, "step":0.001, "round": False}),
                               }}
@@ -202,6 +202,7 @@ def INPUT_TYPES(s):
     def patch(self, model, sampling, sigma_max, sigma_min):
         m = model.clone()
 
+        sampling_base = comfy.model_sampling.ModelSamplingContinuousEDM
         latent_format = None
         sigma_data = 1.0
         if sampling == "eps":
@@ -215,8 +216,11 @@ def patch(self, model, sampling, sigma_max, sigma_min):
             sampling_type = comfy.model_sampling.EDM
             sigma_data = 0.5
             latent_format = comfy.latent_formats.SDXL_Playground_2_5()
+        elif sampling == "cosmos_rflow":
+            sampling_type = comfy.model_sampling.COSMOS_RFLOW
+            sampling_base = comfy.model_sampling.ModelSamplingCosmosRFlow
 
-        class ModelSamplingAdvanced(comfy.model_sampling.ModelSamplingContinuousEDM, sampling_type):
+        class ModelSamplingAdvanced(sampling_base, sampling_type):
             pass
 
         model_sampling = ModelSamplingAdvanced(model.model.model_config)