fix: enable scribble mode with mask input by default (AUTOMATIC1111#7)

Author: Mikubill

README.md

@@ -17,6 +17,8 @@ Thanks & Inspired: kohya-ss/sd-webui-additional-networks
 
 ### Install
 
+Some users may need to install the cv2 library before using it: `pip install opencv-python`
+
 Install prettytable if you want to use img2seg preprocessor: `pip install prettytable`
 
 1. Open "Extensions" tab.

scripts/controlnet.py

@@ -258,6 +258,7 @@ def restore_networks():
         if not ((image['mask'][:, :, 0]==0).all() or (image['mask'][:, :, 0]==255).all()):
             print("using mask as input")
             input_image = HWC3(image['mask'][:, :, 0])
+            scribble_mode = True
 
         if scribble_mode:
             detected_map = np.zeros_like(input_image, dtype=np.uint8)