Cycles Volume Render: work on nodes and closures.

* Henyey-Greenstein scattering closure implementation.
* Rename transparent to absorption node and isotropic to scatter node.
* Volume density is folded into the closure weights.
* OSL support for volume closures and nodes.
* This commit has no user visible changes, there is no volume render code yet.

This is work by "storm", Stuart Broadfoot, Thomas Dinges and myself.

1 files changed, 4 insertions, 4 deletions

diff --git a/intern/cycles/app/cycles_xml.cpp b/intern/cycles/app/cycles_xml.cpp
index df187f046e5..a483c766bed 100644
--- a/intern/cycles/app/cycles_xml.cpp
+++ b/intern/cycles/app/cycles_xml.cpp
@@ -452,11 +452,11 @@ static void xml_read_shader_graph(const XMLReadState& state, Shader *shader, pug
 		else if(string_iequals(node.name(), "background")) {
 			snode = new BackgroundNode();
 		}
-		else if(string_iequals(node.name(), "transparent_volume")) {
-			snode = new TransparentVolumeNode();
+		else if(string_iequals(node.name(), "absorption_volume")) {
+			snode = new AbsorptionVolumeNode();
 		}
-		else if(string_iequals(node.name(), "isotropic_volume")) {
-			snode = new IsotropicVolumeNode();
+		else if(string_iequals(node.name(), "scatter_volume")) {
+			snode = new ScatterVolumeNode();
 		}
 		else if(string_iequals(node.name(), "geometry")) {
 			snode = new GeometryNode();