Fix: Water Trench Effect & Layering (Subtract Mask) - Implemented RenderTexture erasing for true depth, cleaned up Z-sorting, and optimized GrassScene_Clean.

scripts/crop_stream.py

@@ -0,0 +1,31 @@
+import cv2
+import numpy as np
+
+def crop_stream_segment():
+    # Load the processed stream segment
+    img = cv2.imread("assets/environment/potok_segment.png", cv2.IMREAD_UNCHANGED)
+    
+    if img is None:
+        print("Error: Could not load image.")
+        return
+
+    h, w = img.shape[:2]
+    
+    # The image is an isometric block. The bottom part is the "front wall".
+    # To make it look "sunken" or flat, we should remove the bottom front dirt wall.
+    # Let's interactively guess: removing the bottom 1/3 might work.
+    
+    # Crop top 75% (Remove bottom 25%)
+    # Adjust this factor based on visual inspection of "cube" height vs "face" height
+    # Ideally, we keep the top surface.
+    
+    crop_height = int(h * 0.70) 
+    
+    # Crop
+    cropped = img[0:crop_height, 0:w]
+    
+    # Save
+    cv2.imwrite("assets/environment/potok_segment.png", cropped)
+    print(f"Cropped image from {h} to {crop_height} height.")
+
+crop_stream_segment()