[shader] コメント追加

Author: nojima

shader/gen_hash.rb

@@ -52,6 +52,12 @@ def hash_code(in_dim, out_dim)
 
 def main
   puts "// Hash Functions"
+  puts "//"
+  puts "// murmurHashNM() takes M unsigned integers and returns N hash values."
+  puts "// The returned values are unsigned integers between 0 and 2^32 - 1."
+  puts "//"
+  puts "// hashNM() takes M floating point numbers and returns N hash values."
+  puts "// The returned values are floating point numbers between 0.0 and 1.0."
   puts
   (1..4).each do |out_dim|
     (1..4).each do |in_dim|

shader/hash.frag

@@ -1,4 +1,10 @@
 // Hash Functions
+//
+// murmurHashNM() takes M unsigned integers and returns N hash values.
+// The returned values are unsigned integers between 0 and 2^32 - 1.
+//
+// hashNM() takes M floating point numbers and returns N hash values.
+// The returned values are floating point numbers between 0.0 and 1.0.
 
 //------------------------------------------------------------------------------