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, 8 insertions, 0 deletions

diff --git a/source/blender/editors/space_node/drawnode.c b/source/blender/editors/space_node/drawnode.c
index b89f163f579..47433693e7b 100644
--- a/source/blender/editors/space_node/drawnode.c
+++ b/source/blender/editors/space_node/drawnode.c
@@ -948,6 +948,11 @@ static void node_shader_buts_tex_voronoi(uiLayout *layout, bContext *UNUSED(C),
   uiItemR(layout, ptr, "feature", 0, "", ICON_NONE);
 }
 
+static void node_shader_buts_tex_noise(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
+{
+  uiItemR(layout, ptr, "dimensions", 0, "", ICON_NONE);
+}
+
 static void node_shader_buts_tex_pointdensity(uiLayout *layout,
                                               bContext *UNUSED(C),
                                               PointerRNA *ptr)
@@ -1267,6 +1272,9 @@ static void node_shader_set_butfunc(bNodeType *ntype)
     case SH_NODE_TEX_VORONOI:
       ntype->draw_buttons = node_shader_buts_tex_voronoi;
       break;
+    case SH_NODE_TEX_NOISE:
+      ntype->draw_buttons = node_shader_buts_tex_noise;
+      break;
     case SH_NODE_TEX_POINTDENSITY:
       ntype->draw_buttons = node_shader_buts_tex_pointdensity;
       break;