Merge pull request #2676 from BigRoy/hou_fix_single_frame_render

Houdini Explicitly collect correct frame name even in case of single frame render when `frameStart` is provided

openpype/hosts/houdini/plugins/publish/collect_frames.py

@@ -1,6 +1,7 @@
 import os
 import re
 
+import hou
 import pyblish.api
 from openpype.hosts.houdini.api import lib
 
@@ -16,8 +17,17 @@ def process(self, instance):
 
  ropnode = instance[0]
 
+ start_frame = instance.data.get("frameStart", None)
+ end_frame = instance.data.get("frameEnd", None)
+
  output_parm = lib.get_output_parameter(ropnode)
- output = output_parm.eval()
+ if start_frame is not None:
+ # When rendering only a single frame still explicitly
+ # get the name for that particular frame instead of current frame
+ output = output_parm.evalAtFrame(start_frame)
+ else:
+ self.log.warning("Using current frame: {}".format(hou.frame()))
+ output = output_parm.eval()
 
  _, ext = os.path.splitext(output)
  file_name = os.path.basename(output)
@@ -30,9 +40,6 @@ def process(self, instance):
  pattern = r"\w+\.(\d+)" + re.escape(ext)
  match = re.match(pattern, file_name)
 
- start_frame = instance.data.get("frameStart", None)
- end_frame = instance.data.get("frameEnd", None)
-
  if match and start_frame is not None:
 
  # Check if frames are bigger than 1 (file collection)