[Bf-blender-cvs] [3fd92b5c224] blender-v2.92-release: Fix T83344: Cycles baking + progressive refine fails

[Brecht Van Lommel]

Commit: 3fd92b5c224b4a5ba274514a62643f8d7df644d9
Author: Brecht Van Lommel
Date:   Thu Jan 21 15:12:17 2021 +0100
Branches: blender-v2.92-release
https://developer.blender.org/rB3fd92b5c224b4a5ba274514a62643f8d7df644d9

Fix T83344: Cycles baking + progressive refine fails

===================================================================

M	intern/cycles/render/session.cpp

===================================================================

diff --git a/intern/cycles/render/session.cpp b/intern/cycles/render/session.cpp
index d0ab3445549..70b140ee9c6 100644
--- a/intern/cycles/render/session.cpp
+++ b/intern/cycles/render/session.cpp
@@ -559,7 +559,7 @@ bool Session::acquire_tile(RenderTile &rtile, Device *tile_device, uint tile_typ
 
   if (read_bake_tile_cb) {
     /* This will read any passes needed as input for baking. */
-    {
+    if (tile_manager.state.sample == tile_manager.range_start_sample) {
       thread_scoped_lock tile_lock(tile_mutex);
       read_bake_tile_cb(rtile);
     }