Cycles: add constant folding for more color operation nodes.

Invert, brightness & constrast, separate/combine and Mix RGB blend modes
and clamping.

1 files changed, 8 insertions, 1 deletions

diff --git a/intern/cycles/render/nodes.h b/intern/cycles/render/nodes.h
index 8d73a94abb5..978908f4c78 100644
--- a/intern/cycles/render/nodes.h
+++ b/intern/cycles/render/nodes.h
@@ -643,7 +643,7 @@ public:
 class InvertNode : public ShaderNode {
 public:
 	SHADER_NODE_CLASS(InvertNode)
-
+	bool constant_fold(ShaderGraph *graph, ShaderOutput *socket, ShaderInput *optimized);
 	virtual int get_group() { return NODE_GROUP_LEVEL_3; }
 
 	float fac;
@@ -667,6 +667,7 @@ public:
 class CombineRGBNode : public ShaderNode {
 public:
 	SHADER_NODE_CLASS(CombineRGBNode)
+	bool constant_fold(ShaderGraph *graph, ShaderOutput *socket, ShaderInput *optimized);
 	virtual int get_group() { return NODE_GROUP_LEVEL_3; }
 
 	float r, g, b;
@@ -675,6 +676,7 @@ public:
 class CombineHSVNode : public ShaderNode {
 public:
 	SHADER_NODE_CLASS(CombineHSVNode)
+	bool constant_fold(ShaderGraph *graph, ShaderOutput *socket, ShaderInput *optimized);
 	virtual int get_group() { return NODE_GROUP_LEVEL_3; }
 
 	float h, s, v;
@@ -683,6 +685,7 @@ public:
 class CombineXYZNode : public ShaderNode {
 public:
 	SHADER_NODE_CLASS(CombineXYZNode)
+	bool constant_fold(ShaderGraph *graph, ShaderOutput *socket, ShaderInput *optimized);
 	virtual int get_group() { return NODE_GROUP_LEVEL_3; }
 
 	float x, y, z;
@@ -701,6 +704,7 @@ public:
 class BrightContrastNode : public ShaderNode {
 public:
 	SHADER_NODE_CLASS(BrightContrastNode)
+	bool constant_fold(ShaderGraph *graph, ShaderOutput *socket, ShaderInput *optimized);
 	virtual int get_group() { return NODE_GROUP_LEVEL_1; }
 
 	float3 color;
@@ -711,6 +715,7 @@ public:
 class SeparateRGBNode : public ShaderNode {
 public:
 	SHADER_NODE_CLASS(SeparateRGBNode)
+	bool constant_fold(ShaderGraph *graph, ShaderOutput *socket, ShaderInput *optimized);
 	virtual int get_group() { return NODE_GROUP_LEVEL_3; }
 
 	float3 color;
@@ -719,6 +724,7 @@ public:
 class SeparateHSVNode : public ShaderNode {
 public:
 	SHADER_NODE_CLASS(SeparateHSVNode)
+	bool constant_fold(ShaderGraph *graph, ShaderOutput *socket, ShaderInput *optimized);
 	virtual int get_group() { return NODE_GROUP_LEVEL_3; }
 
 	float3 color;
@@ -727,6 +733,7 @@ public:
 class SeparateXYZNode : public ShaderNode {
 public:
 	SHADER_NODE_CLASS(SeparateXYZNode)
+	bool constant_fold(ShaderGraph *graph, ShaderOutput *socket, ShaderInput *optimized);
 	virtual int get_group() { return NODE_GROUP_LEVEL_3; }
 
 	float3 vector;