Compositor: Improve reports to the interface about what's going on

The functionality was got lost when new compositor system was landed
and it wasn't always clear what's causing the hicucps. Now it's nicely
reported to the stats line.

source/blender/compositor/intern/COM_ExecutionGroup.cpp

@@ -377,35 +377,6 @@ MemoryBuffer *ExecutionGroup::constructConsolidatedMemoryBuffer(MemoryProxy *mem
 	return result;
 }
 
-void ExecutionGroup::printBackgroundStats(void)
-{
-	uintptr_t mem_in_use, mmap_in_use, peak_memory;
-	float megs_used_memory, mmap_used_memory, megs_peak_memory;
-	double execution_time;
-	char timestr[64];
-
-	execution_time = PIL_check_seconds_timer() - this->m_executionStartTime;
-
-	mem_in_use = MEM_get_memory_in_use();
-	mmap_in_use = MEM_get_mapped_memory_in_use();
-	peak_memory = MEM_get_peak_memory();
-
-	megs_used_memory = (mem_in_use - mmap_in_use) / (1024.0 * 1024.0);
-	mmap_used_memory = (mmap_in_use) / (1024.0 * 1024.0);
-	megs_peak_memory = (peak_memory) / (1024.0 * 1024.0);
-
-	fprintf(stdout, "Mem:%.2fM (%.2fM, Peak %.2fM) ",
-	        megs_used_memory, mmap_used_memory, megs_peak_memory);
-
-	BLI_timestr(execution_time, timestr, sizeof(timestr));
-	printf("| Elapsed %s ", timestr);
-	printf("| Tree %s, Tile %u-%u ", this->m_bTree->id.name + 2,
-	       this->m_chunksFinished, this->m_numberOfChunks);
-
-	fputc('\n', stdout);
-	fflush(stdout);
-}
-
 void ExecutionGroup::finalizeChunkExecution(int chunkNumber, MemoryBuffer **memoryBuffers)
 {
 	if (this->m_chunkExecutionStates[chunkNumber] == COM_ES_SCHEDULED)
@@ -430,8 +401,11 @@ void ExecutionGroup::finalizeChunkExecution(int chunkNumber, MemoryBuffer **memo
 		progress /= this->m_numberOfChunks;
 		this->m_bTree->progress(this->m_bTree->prh, progress);
 
-		if (G.background)
+		char buf[128];
-			printBackgroundStats();
+		BLI_snprintf(buf, sizeof(buf), "Compositing | Tile %d-%d",
+		             this->m_chunksFinished,
+		             this->m_numberOfChunks);
+		this->m_bTree->stats_draw(this->m_bTree->sdh, buf);
 	}
 }
 

source/blender/compositor/intern/COM_ExecutionGroup.h

@@ -346,11 +346,6 @@ public:
 	 */
 	MemoryBuffer *allocateOutputBuffer(int chunkNumber, rcti *rect);
 
-	/**
-	 * @brief print execution statistics to stdout when running in a background mode
-	 */
-	void printBackgroundStats(void);
-	
 	/**
 	 * @brief after a chunk is executed the needed resources can be freed or unlocked.
 	 * @param chunknumber

source/blender/compositor/intern/COM_ExecutionSystem.cpp

@@ -76,6 +76,8 @@ ExecutionSystem::ExecutionSystem(RenderData *rd, Scene *scene, bNodeTree *editin
 	                         viewer_border->xmin < viewer_border->xmax &&
 	                         viewer_border->ymin < viewer_border->ymax;
 
+	editingtree->stats_draw(editingtree->sdh, (char*)"Compositing | Determining resolution");
+
 	for (index = 0; index < this->m_groups.size(); index++) {
 		resolution[0] = 0;
 		resolution[1] = 0;
@@ -124,6 +126,9 @@ void ExecutionSystem::set_operations(const Operations &operations, const Groups
 
 void ExecutionSystem::execute()
 {
+	const bNodeTree *editingtree = this->m_context.getbNodeTree();
+	editingtree->stats_draw(editingtree->sdh, (char*)"Compositing | Initializing execution");
+
 	DebugInfo::execute_started(this);
 	
 	unsigned int order = 0;
@@ -178,6 +183,7 @@ void ExecutionSystem::execute()
 	WorkScheduler::finish();
 	WorkScheduler::stop();
 
+	editingtree->stats_draw(editingtree->sdh, (char*)"Compositing | Deinitializing execution");
 	for (index = 0; index < this->m_operations.size(); index++) {
 		NodeOperation *operation = this->m_operations[index];
 		operation->deinitExecution();

source/blender/compositor/intern/COM_compositor.cpp

@@ -77,6 +77,7 @@ void COM_execute(RenderData *rd, Scene *scene, bNodeTree *editingtree, int rende
 
 	/* set progress bar to 0% and status to init compositing */
 	editingtree->progress(editingtree->prh, 0.0);
+	editingtree->stats_draw(editingtree->sdh, (char*)"Compositing");
 
 	bool twopass = (editingtree->flag & NTREE_TWO_PASS) > 0 && !rendering;
 	/* initialize execution system */