add some

Former-commit-id: 81176fe226da89eace89cb202bad68e73b7c2a02

src/llamafactory/data/collator.py

@@ -149,6 +149,13 @@ class MultiModalDataCollatorForSeq2Seq(DataCollatorForSeq2Seq):
         features.update(mm_inputs)
         if isinstance(features.get("pixel_values"), list):  # for pixtral inputs
             features = features.data  # use default_collate() instead of BatchEncoding.to()
+        if "image_bound" in features:
+            input_ids, position_ids = features['input_ids'], features['position_ids']
+            features['position_ids'] = F.pad(position_ids, (0, input_ids.shape[-1] - position_ids.shape[-1]))
+            new_features = {}
+            new_features.update({"data": features})
+            new_features.update(features)
+            features = new_features
 
         return features