Commit: 45b0e93b2e35555a22f8ac25d7af64f76c19c7b4
Author: Thomas Dinges
Date:   Fri Mar 11 21:33:56 2016 +0100
Branches: blender-v2.77-release
https://developer.blender.org/rB45b0e93b2e35555a22f8ac25d7af64f76c19c7b4

Cycles: Do no limit viewport samples to USHRT_MAX when value is at 0.

We don't limit manually setting higher values, this was probably overlooked 
here.

Found by @Blendify in IRC.

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

M       intern/cycles/blender/blender_sync.cpp
M       intern/cycles/render/session.cpp

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

diff --git a/intern/cycles/blender/blender_sync.cpp 
b/intern/cycles/blender/blender_sync.cpp
index a3cccc6..3098522 100644
--- a/intern/cycles/blender/blender_sync.cpp
+++ b/intern/cycles/blender/blender_sync.cpp
@@ -546,7 +546,7 @@ SessionParams 
BlenderSync::get_session_params(BL::RenderEngine& b_engine,
                else {
                        params.samples = preview_aa_samples;
                        if(params.samples == 0)
-                               params.samples = USHRT_MAX;
+                               params.samples = INT_MAX;
                }
        }
        else {
@@ -556,7 +556,7 @@ SessionParams 
BlenderSync::get_session_params(BL::RenderEngine& b_engine,
                else {
                        params.samples = preview_samples;
                        if(params.samples == 0)
-                               params.samples = USHRT_MAX;
+                               params.samples = INT_MAX;
                }
        }
 
diff --git a/intern/cycles/render/session.cpp b/intern/cycles/render/session.cpp
index 762e49a..84a420c 100644
--- a/intern/cycles/render/session.cpp
+++ b/intern/cycles/render/session.cpp
@@ -870,7 +870,7 @@ void Session::update_status_time(bool show_pause, bool 
show_done)
                        substatus += string_printf(", Sample %d/%d", 
status_sample, num_samples);
                }
        }
-       else if(tile_manager.num_samples == USHRT_MAX)
+       else if(tile_manager.num_samples == INT_MAX)
                substatus = string_printf("Path Tracing Sample %d", sample+1);
        else
                substatus = string_printf("Path Tracing Sample %d/%d", 
sample+1, tile_manager.num_samples);

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