Merge branch 'master' into blender2.8

# Conflicts:
#	tests/gtests/alembic/abc_export_test.cc

intern/cycles/blender/blender_session.cpp

@@ -346,7 +346,7 @@ void BlenderSession::do_write_update_render_tile(RenderTile& rtile, bool do_upda
 			update_render_result(b_rr, b_rlay, rtile);
 		}
 
-		end_render_result(b_engine, b_rr, true, highlight, true);
+		end_render_result(b_engine, b_rr, true, highlight, false);
 	}
 	else {
 		/* write result */

source/blender/render/intern/include/render_types.h

@@ -118,7 +118,8 @@ typedef struct RenderPart {
 enum {
 	PART_STATUS_NONE        = 0,
 	PART_STATUS_IN_PROGRESS = 1,
-	PART_STATUS_READY       = 2
+	PART_STATUS_RENDERED    = 2,
+	PART_STATUS_MERGED      = 3
 };
 
 /* controls state of render, everything that's read-only during render stage */

source/blender/render/intern/source/external_engine.c

@@ -300,7 +300,7 @@ void RE_engine_end_result(RenderEngine *engine, RenderResult *result, int cancel
 		RenderPart *pa = get_part_from_result(re, result);
 
 		if (pa) {
-			pa->status = PART_STATUS_READY;
+			pa->status = (merge_results)? PART_STATUS_MERGED: PART_STATUS_RENDERED;
 		}
 		else if (re->result->do_exr_tile) {
 			/* if written result does not match any tile and we are using save
@@ -311,7 +311,7 @@ void RE_engine_end_result(RenderEngine *engine, RenderResult *result, int cancel
 
 	if (!cancel || merge_results) {
 		if (re->result->do_exr_tile) {
-			if (!cancel) {
+			if (!cancel && merge_results) {
 				render_result_exr_file_merge(re->result, result, re->viewname);
 			}
 		}

source/blender/render/intern/source/pipeline.c

@@ -1152,7 +1152,7 @@ static void *do_part_thread(void *pa_v)
 		BLI_rw_mutex_unlock(&R.resultmutex);
 	}
 	
-	pa->status = PART_STATUS_READY;
+	pa->status = PART_STATUS_MERGED;
 	
 	return NULL;
 }
@@ -1258,7 +1258,7 @@ static int sort_and_queue_parts(Render *re, int minx, ThreadQueue *workqueue)
 	
 	/* find center of rendered parts, image center counts for 1 too */
 	for (pa = re->parts.first; pa; pa = pa->next) {
-		if (pa->status == PART_STATUS_READY) {
+		if (pa->status >= PART_STATUS_RENDERED) {
 			centx += BLI_rcti_cent_x(&pa->disprect);
 			centy += BLI_rcti_cent_y(&pa->disprect);
 			tot++;

source/blender/render/intern/source/render_result.c

@@ -1063,7 +1063,7 @@ void render_result_save_empty_result_tiles(Render *re)
 			IMB_exr_clear_channels(rl->exrhandle);
 		
 			for (pa = re->parts.first; pa; pa = pa->next) {
-				if (pa->status != PART_STATUS_READY) {
+				if (pa->status != PART_STATUS_MERGED) {
 					int party = pa->disprect.ymin - re->disprect.ymin + pa->crop;
 					int partx = pa->disprect.xmin - re->disprect.xmin + pa->crop;
 					IMB_exrtile_write_channels(rl->exrhandle, partx, party, 0, re->viewname);

tests/gtests/alembic/abc_export_test.cc

@@ -5,8 +5,8 @@
 #include "intern/abc_exporter.h"
 
 extern "C" {
-#include "BKE_global.h"
 #include "BLI_utildefines.h"
+#include "BKE_library.h"
 #include "BLI_math.h"
 #include "DNA_scene_types.h"
 }
@@ -44,6 +44,7 @@ protected:
 	Scene scene;
 	TestableAbcExporter *exporter;
 	EvaluationContext eval_ctx;
+	Main *bmain;
 
 	virtual void SetUp()
 	{
@@ -54,18 +55,21 @@ protected:
 		scene.r.frs_sec = 50;
 		scene.r.frs_sec_base = 2;
 
+		bmain = BKE_main_new();
+
 		exporter = NULL;
 	}
 
 	virtual void TearDown()
 	{
+		BKE_main_free(bmain);
 		delete exporter;
 	}
 
 	// Call after setting up the settings.
 	void createExporter()
 	{
-		exporter = new TestableAbcExporter(G.main, &scene, "somefile.abc", settings);
+		exporter = new TestableAbcExporter(bmain, &scene, "somefile.abc", settings);
 	}
 };