lib/mikunyan/decoders/astc_block_decoder.rb in mikunyan-3.9.2 vs lib/mikunyan/decoders/astc_block_decoder.rb in mikunyan-3.9.3

@@ -343,27 +343,23 @@
                     seeds = [0, 4, 8, 12, 16, 20, 24, 28].map{|i| (rnum >> i) & 0xf}.map!{|e| e * e}
                     sh = [seed & 2 == 2 ? 4 : 5, @part_num == 3 ? 6 : 5]
                     sh.reverse! if seed & 1 == 0
                     seeds.map!.with_index{|e, i| e >> sh[i % 2]}
 
-                    @partition = Array.new(@bw * @bh)
+                    @partition = (0...@bw * @bh).map do |i|
+                        x = i % @bw
+                        y = i / @bw
+                        if small_block
+                            x <<= 1
+                            y <<= 1
+                        end
 
-                    for y in 0...@bh
-                        for x in 0...@bw
-                            idx = x + y * @bw
+                        a = (seeds[0] * x + seeds[1] * y + (rnum >> 14)) & 0x3f
+                        b = (seeds[2] * x + seeds[3] * y + (rnum >> 10)) & 0x3f
+                        c = @part_num < 3 ? 0 : (seeds[4] * x + seeds[5] * y + (rnum >> 6)) & 0x3f
+                        d = @part_num < 4 ? 0 : (seeds[6] * x + seeds[7] * y + (rnum >> 2)) & 0x3f
 
-                            if small_block
-                                x <<= 1
-                                y <<= 1
-                            end
-
-                            a = (seeds[0] * x + seeds[1] * y + (rnum >> 14)) & 0x3f
-                            b = (seeds[2] * x + seeds[3] * y + (rnum >> 10)) & 0x3f
-                            c = @part_num < 3 ? 0 : (seeds[4] * x + seeds[5] * y + (rnum >> 6)) & 0x3f
-                            d = @part_num < 4 ? 0 : (seeds[6] * x + seeds[7] * y + (rnum >> 2)) & 0x3f
-
-                            @partition[idx] = 3 - [d, c, b, a].each_with_index.max[1]
-                        end
+                        3 - [d, c, b, a].each_with_index.max[1]
                     end
                 end
             end
 
             def applicate_color