Added shader support, removed unused debugging puts statements and fixed Gosu Font.draw deprecation warning.

lib/objects/model_loader.rb

@@ -37,7 +37,7 @@ class IMICFPS
       if CACHE[@type].is_a?(Hash)
         if CACHE[@type][@file_path]
           @model = CACHE[@type][@file_path]#.dup # Don't know why, but adding .dup improves performance with Sponza (1 fps -> 20 fps)
-          puts "Used cached model for: #{@file_path.split('/').last}"
+          # puts "Used cached model for: #{@file_path.split('/').last}"
           found = true
         end
       end