Commit: 836c69c92fb5992eb83c4311a98f5ffad4a172f5
Author: Thomas Dinges
Date: Wed Nov 18 17:20:39 2015 +0100
Branches: master
https://developer.blender.org/rB836c69c92fb5992eb83c4311a98f5ffad4a172f5
Cleanup: Add some notes in code for upcoming graph simplification process.
===================================================================
M intern/cycles/render/graph.cpp
===================================================================
diff --git a/intern/cycles/render/graph.cpp b/intern/cycles/render/graph.cpp
index 16e1ef7..a342eae 100644
--- a/intern/cycles/render/graph.cpp
+++ b/intern/cycles/render/graph.cpp
@@ -576,9 +576,25 @@ void ShaderGraph::break_cycles(ShaderNode *node,
vector<bool>& visited, vector<b
void ShaderGraph::clean()
{
- /* remove proxy and unnecessary nodes */
+ /* Graph simplification:
+ * 1: Remove unnecesarry nodes
+ * 2: Constant folding
+ * 3: Simplification
+ * 4: De-duplication
+ */
+
+ /* 1: Remove proxy and unnecessary nodes. */
remove_unneeded_nodes();
+ /* 2: Constant folding. */
+ /* TODO(dingto): Implement */
+
+ /* 3: Simplification. */
+ /* TODO(dingto): Implement */
+
+ /* 4: De-duplication. */
+ /* TODO(dingto): Implement */
+
/* we do two things here: find cycles and break them, and remove unused
* nodes that don't feed into the output. how cycles are broken is
* undefined, they are invalid input, the important thing is to not
crash */
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