Patch #7897 Texture Nodes!

Robin (Frrr) Allen did a decent job on this, so we can also welcome him
as a member in the svn committers team to maintain it!

I do the first commit with some minor fixes:
- get Makefiles work
- fix rounding issue with tiles on unit faces
- removed UI includes from tex node

A nice doc in wiki is here:
http://wiki.blender.org/index.php/User:Frr/TexnodeManual

On the todo for Robin is:
- When using one or more Texture-input nodes, you cannot edit them by activating
  (as works now for Material nodes).
- The new "output node" option fails on the default case, when only one
  output node is active. It then shows often a blank menu. Will get fixed asap.
- When using a NodeTree-Texture as input node, the menu for 'active output'
  should not show. NodeTree should ignore other nodetrees to keep things sane
  for now.
- On a future todo is proper usage of "Dxt" and "Dyt" texture vectors for
  superior antialising of checkers/bricks.

General note; I know people are dying to get a full integrated shader system
with nodes. In theory we could merge this with Material Nodetrees... but I 
rather wait for a solid and very well thought out design proposal for this, 
also including design ideas for unifying with a shader language (GPU, CPU).
For the time being this is a nice extension of current textures. :)

1 files changed, 42 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h
index 01c54663c6d..fa3a654c1c2 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -47,6 +47,7 @@ struct rctf;
 struct ListBase;
 struct RenderData;
 struct Scene;
+struct Tex;
 struct GPUMaterial;
 struct GPUNode;
 struct GPUNodeStack;
@@ -118,6 +119,8 @@ typedef struct bNodeType {
 #define NODE_CLASS_MATTE		9
 #define NODE_CLASS_DISTORT		10
 #define NODE_CLASS_OP_DYNAMIC	11
+#define NODE_CLASS_PATTERN 12
+#define NODE_CLASS_TEXTURE 13
 
 /* ************** GENERIC API, TREES *************** */
 
@@ -377,6 +380,45 @@ void ntreeCompositForceHidden(struct bNodeTree *ntree);
 
 void free_compbuf(struct CompBuf *cbuf); /* internal...*/
 
+
+/* ************** TEXTURE NODES *************** */
+
+struct TexResult;
+
+#define TEX_NODE_OUTPUT     101
+#define TEX_NODE_CHECKER    102
+#define TEX_NODE_TEXTURE    103
+#define TEX_NODE_BRICKS     104
+#define TEX_NODE_MATH       105
+#define TEX_NODE_MIX_RGB    106
+#define TEX_NODE_RGBTOBW    107
+#define TEX_NODE_VALTORGB   108
+#define TEX_NODE_IMAGE      109
+#define TEX_NODE_CURVE_RGB  110
+#define TEX_NODE_INVERT     111
+#define TEX_NODE_HUE_SAT    112
+#define TEX_NODE_CURVE_TIME 113
+#define TEX_NODE_ROTATE     114
+#define TEX_NODE_VIEWER     115
+#define TEX_NODE_TRANSLATE  116
+
+/* 201-299 reserved. Use like this: TEX_NODE_PROC + TEX_CLOUDS, etc */
+#define TEX_NODE_PROC      200
+#define TEX_NODE_PROC_MAX  300
+
+extern struct ListBase node_all_textures;
+
+/* API */
+int  ntreeTexTagAnimated(struct bNodeTree *ntree);
+void ntreeTexUpdatePreviews( struct bNodeTree* nodetree );
+void ntreeTexExecTree(struct bNodeTree *ntree, struct TexResult *target, float *coord, char do_preview, short thread, struct Tex *tex, short which_output);
+void ntreeTexCheckCyclics(struct bNodeTree *ntree);
+void ntreeTexAssignIndex(struct bNodeTree *ntree, struct bNode *node);
+char* ntreeTexOutputMenu(struct bNodeTree *ntree);
+
+
+/**/
+
 void init_nodesystem(void);
 void free_nodesystem(void);