Cleanup and improvements of the compositor debug output.

Debug code for graphviz output moved to a dedicated file COM_Debug.h/cpp.

The DebugInfo class has only static functions, which are called from a number of places to keep track of what is happening in the compositor. If debugging is disabled these are just inline stubs, so we
don't need #ifdefs everywhere and don't get any overhead.

The graphviz output is much more useful now. DebugInfo keeps track of node names in a static string map for meaningful names. It uses a number of colors for various special operation classes.
ExecutionGroups are indicated in graphviz with clusters.

Currently the graphviz .dot files are stored in the BLI_temporary_dir() folder. A separate dot file is generated for each stage of the ExecutionGroup scheduling, this is intended to give some idea of the
compositor progress, but could still be improved.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/compositor/operations/COM_SetValueOperation.h b/source/blender/compositor/operations/COM_SetValueOperation.h
index 3ddc667bc7e..b88b85d66f2 100644
--- a/source/blender/compositor/operations/COM_SetValueOperation.h
+++ b/source/blender/compositor/operations/COM_SetValueOperation.h
@@ -49,6 +49,6 @@ public:
 	void executePixel(float output[4], float x, float y, PixelSampler sampler);
 	void determineResolution(unsigned int resolution[2], unsigned int preferredResolution[2]);
 	
-	const bool isSetOperation() const { return true; }
+	bool isSetOperation() const { return true; }
 };
 #endif