Pull in letter grid gimmick from 2ner

1 files changed, 9 insertions, 0 deletions

diff --git a/math.cginc b/math.cginc
index fa38553..c2ae26e 100755
--- a/math.cginc
+++ b/math.cginc
@@ -240,4 +240,13 @@ float voronoi_edge_distance(float3 x) {
   return (d2 - d1) / (2.0 * max(1e-4, length(p2 - p1)));
 }
 
+float median(float3 x) {
+  // Get the min and max.
+  float x_min= min(min(x.r, x.g), x.b);
+  float x_max = max(max(x.r, x.g), x.b);
+
+  // Compute (x.r + x.g + x.b) - (x_min + x_max). This gives us the median.
+  return (x.r + x.g + x.b) - (x_min + x_max);
+}
+
 #endif  // __MATH_INC