Fix T92056: empty sampling pattern in Cycles when opening some existing files

2 files changed, 4 insertions, 3 deletions

diff --git a/intern/cycles/blender/addon/properties.py b/intern/cycles/blender/addon/properties.py
index 8c1f26d7b9f..faa0aaec8ae 100644
--- a/intern/cycles/blender/addon/properties.py
+++ b/intern/cycles/blender/addon/properties.py
@@ -86,8 +86,8 @@ enum_use_layer_samples = (
 )
 
 enum_sampling_pattern = (
-    ('SOBOL', "Sobol", "Use Sobol random sampling pattern"),
-    ('PROGRESSIVE_MUTI_JITTER', "Progressive Multi-Jitter", "Use Progressive Multi-Jitter random sampling pattern"),
+    ('SOBOL', "Sobol", "Use Sobol random sampling pattern", 0),
+    ('PROGRESSIVE_MUTI_JITTER', "Progressive Multi-Jitter", "Use Progressive Multi-Jitter random sampling pattern", 1),
 )
 
 enum_volume_sampling = (
diff --git a/intern/cycles/blender/addon/version_update.py b/intern/cycles/blender/addon/version_update.py
index 57da7d7995c..b3e8e755903 100644
--- a/intern/cycles/blender/addon/version_update.py
+++ b/intern/cycles/blender/addon/version_update.py
@@ -235,7 +235,8 @@ def do_versions(self):
                     cscene.use_denoising = False
                 if not cscene.is_property_set("use_preview_denoising"):
                     cscene.use_preview_denoising = False
-                if not cscene.is_property_set("sampling_pattern"):
+                if not cscene.is_property_set("sampling_pattern") or \
+                   cscene.get('sampling_pattern') >= 2:
                     cscene.sampling_pattern = 'PROGRESSIVE_MUTI_JITTER'
 
                 # Removal of square samples.