Shading: Extend Noise node to other dimenstions.

This patch extends perlin noise to operate in 1D, 2D, 3D, and 4D
space. The noise code has also been refactored to be more readable.

The Color output and distortion patterns changed, so this patch
breaks backward compatibility. This is due to the fact that we
now use random offsets as noise seeds, as opposed to swizzling
and constants offsets.

Reviewers: brecht, JacquesLucke

Differential Revision: https://developer.blender.org/D5560

1 files changed, 10 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index 0909aa42a4d..988533e0f0e 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -4346,8 +4346,17 @@ static void def_sh_tex_gradient(StructRNA *srna)
 
 static void def_sh_tex_noise(StructRNA *srna)
 {
+  PropertyRNA *prop;
+
   RNA_def_struct_sdna_from(srna, "NodeTexNoise", "storage");
   def_sh_tex(srna);
+
+  prop = RNA_def_property(srna, "dimensions", PROP_ENUM, PROP_NONE);
+  RNA_def_property_enum_sdna(prop, NULL, "dimensions");
+  RNA_def_property_enum_items(prop, rna_enum_node_tex_dimensions_items);
+  RNA_def_property_ui_text(
+      prop, "Dimensions", "The dimensions of the space to evaluate the noise in");
+  RNA_def_property_update(prop, 0, "rna_ShaderNode_socket_update");
 }
 
 static void def_sh_tex_checker(StructRNA *srna)
@@ -4516,7 +4525,7 @@ static void def_sh_tex_white_noise(StructRNA *srna)
   RNA_def_property_enum_sdna(prop, NULL, "custom1");
   RNA_def_property_enum_items(prop, rna_enum_node_tex_dimensions_items);
   RNA_def_property_ui_text(
-      prop, "Dimensions", "The number of dimensions to evaluate the noise in");
+      prop, "Dimensions", "The dimensions of the space to evaluate the noise in");
   RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_ShaderNode_socket_update");
 }