Cycles volume: detect homogeneous volume automatically in common cases.

In practice this means that if you don't connect a texture to your volume nodes
it will figure that out and render the node faster, rather than you having to
specify it manually.

Main weakness is custom OSL nodes where we have to assume it is heterogeneous
because we don't know what kind of data the node accesses.

1 files changed, 1 insertions, 0 deletions

diff --git a/intern/cycles/render/graph.h b/intern/cycles/render/graph.h
index f31e2103229..263ce59156a 100644
--- a/intern/cycles/render/graph.h
+++ b/intern/cycles/render/graph.h
@@ -193,6 +193,7 @@ public:
 	virtual bool has_surface_bssrdf() { return false; }
 	virtual bool has_converter_blackbody() { return false; }
 	virtual bool has_bssrdf_bump() { return false; }
+	virtual bool has_spatial_varying() { return false; }
 
 	vector<ShaderInput*> inputs;
 	vector<ShaderOutput*> outputs;